From patchwork Tue Jan 11 14:32:45 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Mittal, Anuj" X-Patchwork-Id: 2255 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 94FEAC4321E for ; Tue, 11 Jan 2022 14:33:17 +0000 (UTC) Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by mx.groups.io with SMTP id smtpd.web12.7797.1641911596199171730 for ; Tue, 11 Jan 2022 06:33:16 -0800 Authentication-Results: mx.groups.io; dkim=fail reason="unable to parse pub key" header.i=@intel.com header.s=intel header.b=a2P7UE8m; spf=pass (domain: intel.com, ip: 192.55.52.120, mailfrom: anuj.mittal@intel.com) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1641911596; x=1673447596; h=from:to:subject:date:message-id:in-reply-to:references: mime-version:content-transfer-encoding; bh=lO/dkGN1NYF6gIErLjsBWiPMUQi/f/RYgLkxUv2U3vQ=; b=a2P7UE8mlnxRwDmXKLQHqIpTqKpGVMd03NKt+kBNsPQTUW+s8gERtjE6 I1G1TPpimjtpqqVZC1FjanP5Af6x6UXlAJPPFSBnPnCnVAp887YZ/kN5e CDuSIHdGw+sBLDgvd7LLlerRLjQZ+btnPXb49RgOrdayY2dITc7c2Bgu5 2AmJxkUstMwJecIPrykDwiDWoASJJrtWwBAc4vduc5YWG/sKn5lAbbriY tda9Tyo8kFtcrBeh+5wv1xW3kls8QE41g4wrvfAFIQlkCxLtSAmxN0acK dexGYkad8t8ucM95/gmFnNp7xCN3oLKv3c8JC0g5b6uPIDJ+qRyy2QIKy Q==; X-IronPort-AV: E=McAfee;i="6200,9189,10223"; a="242307039" X-IronPort-AV: E=Sophos;i="5.88,279,1635231600"; d="scan'208";a="242307039" Received: from orsmga004.jf.intel.com ([10.7.209.38]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Jan 2022 06:33:08 -0800 X-IronPort-AV: E=Sophos;i="5.88,279,1635231600"; d="scan'208";a="623086319" Received: from wongkye-mobl3.gar.corp.intel.com (HELO anmitta2-mobl3.intel.com) ([10.213.137.187]) by orsmga004-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Jan 2022 06:33:00 -0800 From: Anuj Mittal To: openembedded-core@lists.openembedded.org Subject: [hardknott][PATCH 1/9] webkitgtk: fix fix CVE-2021-42762 Date: Tue, 11 Jan 2022 22:32:45 +0800 Message-Id: <64170871293745254e4287cabeb7ceff5cbf64f8.1641911316.git.anuj.mittal@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: References: MIME-Version: 1.0 List-Id: X-Webhook-Received: from li982-79.members.linode.com [45.33.32.79] by aws-us-west-2-korg-lkml-1.web.codeaurora.org with HTTPS for ; Tue, 11 Jan 2022 14:33:17 -0000 X-Groupsio-URL: https://lists.openembedded.org/g/openembedded-core/message/160410 From: Kai Kang Backport and rebase patch to fix CVE-2021-42762 for webkitgtk 2.30.5. CVE: CVE-2021-42762 Ref: * https://bugs.webkit.org/show_bug.cgi?id=231479#c8 Signed-off-by: Kai Kang Signed-off-by: Anuj Mittal --- .../webkit/webkitgtk/CVE-2021-42762.patch | 468 ++++++++++++++++++ meta/recipes-sato/webkit/webkitgtk_2.30.5.bb | 1 + 2 files changed, 469 insertions(+) create mode 100644 meta/recipes-sato/webkit/webkitgtk/CVE-2021-42762.patch diff --git a/meta/recipes-sato/webkit/webkitgtk/CVE-2021-42762.patch b/meta/recipes-sato/webkit/webkitgtk/CVE-2021-42762.patch new file mode 100644 index 0000000000..1d012271cb --- /dev/null +++ b/meta/recipes-sato/webkit/webkitgtk/CVE-2021-42762.patch @@ -0,0 +1,468 @@ +Backport and rebase patch to fix CVE-2021-42762 for webkitgtk 2.30.5. + +CVE: CVE-2021-42762 +Upstream-Status: Backport [https://trac.webkit.org/changeset/284451/webkit] + +Ref: +* https://bugs.webkit.org/show_bug.cgi?id=231479#c8 + +Signed-off-by: Kai Kang + +From 035ac439855c7bef0a4525897f783121e4a6055c Mon Sep 17 00:00:00 2001 +From: Michael Catanzaro +Date: Tue, 19 Oct 2021 14:27:17 +0000 +Subject: [PATCH] Update seccomp filters with latest changes from flatpak + https://bugs.webkit.org/show_bug.cgi?id=231479 + +Patch by Michael Catanzaro on 2021-10-19 +Reviewed by Adrian Perez de Castro. + +Additionally, let's fix a minor inconsistency in our error-handling code: all but one of +our codepaths carefully free and close resources, but the process is about to crash so +there's not really any reason to do so. The code is slightly simpler if we don't bother. + +The seemingly-extraneous include order changes are required to placate the style checker. + +* UIProcess/Launcher/glib/BubblewrapLauncher.cpp: +(WebKit::seccompStrerror): +(WebKit::setupSeccomp): +* UIProcess/Launcher/glib/Syscalls.h: Added. + +Canonical link: https://commits.webkit.org/243211@main +git-svn-id: https://svn.webkit.org/repository/webkit/trunk@284451 268f45cc-cd09-0410-ab3c-d52691b4dbfc +--- + .../UIProcess/Launcher/glib/BubblewrapLauncher.cpp | 139 +++++++++----- + Source/WebKit/UIProcess/Launcher/glib/Syscalls.h | 200 +++++++++++++++++++++ + 2 files changed, 293 insertions(+), 46 deletions(-) + +diff --git a/Source/WebKit/UIProcess/Launcher/glib/BubblewrapLauncher.cpp b/Source/WebKit/UIProcess/Launcher/glib/BubblewrapLauncher.cpp +index 889388ac..c2f7e502 100644 +--- a/Source/WebKit/UIProcess/Launcher/glib/BubblewrapLauncher.cpp ++++ b/Source/WebKit/UIProcess/Launcher/glib/BubblewrapLauncher.cpp +@@ -25,11 +25,18 @@ + #include + #include + #include ++#include + #include + #include + #include + #include + ++#if !defined(MFD_ALLOW_SEALING) && HAVE(LINUX_MEMFD_H) ++#include ++#endif ++ ++#include "Syscalls.h" ++ + #if PLATFORM(GTK) + #include "WaylandCompositor.h" + #endif +@@ -40,13 +47,7 @@ + #define BASE_DIRECTORY "wpe" + #endif + +-#include +- +-#ifndef MFD_ALLOW_SEALING +- +-#if HAVE(LINUX_MEMFD_H) +- +-#include ++#if !defined(MFD_ALLOW_SEALING) && HAVE(LINUX_MEMFD_H) + + // These defines were added in glibc 2.27, the same release that added memfd_create. + // But the kernel added all of this in Linux 3.17. So it's totally safe for us to +@@ -65,9 +66,7 @@ static int memfd_create(const char* name, unsigned flags) + { + return syscall(__NR_memfd_create, name, flags); + } +-#endif // #if HAVE(LINUX_MEMFD_H) +- +-#endif // #ifndef MFD_ALLOW_SEALING ++#endif // #if !defined(MFD_ALLOW_SEALING) && HAVE(LINUX_MEMFD_H) + + namespace WebKit { + using namespace WebCore; +@@ -573,6 +572,28 @@ static void bindSymlinksRealPath(Vector& args, const char* path) + } + } + ++// Translate a libseccomp error code into an error message. libseccomp ++// mostly returns negative errno values such as -ENOMEM, but some ++// standard errno values are used for non-standard purposes where their ++// strerror() would be misleading. ++static const char* seccompStrerror(int negativeErrno) ++{ ++ RELEASE_ASSERT_WITH_MESSAGE(negativeErrno < 0, "Non-negative error value from libseccomp?"); ++ RELEASE_ASSERT_WITH_MESSAGE(negativeErrno > INT_MIN, "Out of range error value from libseccomp?"); ++ ++ switch (negativeErrno) { ++ case -EDOM: ++ return "Architecture-specific failure"; ++ case -EFAULT: ++ return "Internal libseccomp failure (unknown syscall?)"; ++ case -ECANCELED: ++ return "System failure beyond the control of libseccomp"; ++ } ++ ++ // e.g. -ENOMEM: the result of strerror() is good enough ++ return g_strerror(-negativeErrno); ++} ++ + static int setupSeccomp() + { + // NOTE: This is shared code (flatpak-run.c - LGPLv2.1+) +@@ -600,6 +621,10 @@ static int setupSeccomp() + // in common/flatpak-run.c + // https://git.gnome.org/browse/linux-user-chroot + // in src/setup-seccomp.c ++ // ++ // Other useful resources: ++ // https://github.com/systemd/systemd/blob/HEAD/src/shared/seccomp-util.c ++ // https://github.com/moby/moby/blob/HEAD/profiles/seccomp/default.json + + #if defined(__s390__) || defined(__s390x__) || defined(__CRIS__) + // Architectures with CONFIG_CLONE_BACKWARDS2: the child stack +@@ -613,47 +638,70 @@ static int setupSeccomp() + struct scmp_arg_cmp ttyArg = SCMP_A1(SCMP_CMP_MASKED_EQ, 0xFFFFFFFFu, TIOCSTI); + struct { + int scall; ++ int errnum; + struct scmp_arg_cmp* arg; + } syscallBlockList[] = { + // Block dmesg +- { SCMP_SYS(syslog), nullptr }, ++ { SCMP_SYS(syslog), EPERM, nullptr }, + // Useless old syscall. +- { SCMP_SYS(uselib), nullptr }, ++ { SCMP_SYS(uselib), EPERM, nullptr }, + // Don't allow disabling accounting. +- { SCMP_SYS(acct), nullptr }, ++ { SCMP_SYS(acct), EPERM, nullptr }, + // 16-bit code is unnecessary in the sandbox, and modify_ldt is a + // historic source of interesting information leaks. +- { SCMP_SYS(modify_ldt), nullptr }, ++ { SCMP_SYS(modify_ldt), EPERM, nullptr }, + // Don't allow reading current quota use. +- { SCMP_SYS(quotactl), nullptr }, ++ { SCMP_SYS(quotactl), EPERM, nullptr }, + + // Don't allow access to the kernel keyring. +- { SCMP_SYS(add_key), nullptr }, +- { SCMP_SYS(keyctl), nullptr }, +- { SCMP_SYS(request_key), nullptr }, ++ { SCMP_SYS(add_key), EPERM, nullptr }, ++ { SCMP_SYS(keyctl), EPERM, nullptr }, ++ { SCMP_SYS(request_key), EPERM, nullptr }, + + // Scary VM/NUMA ops +- { SCMP_SYS(move_pages), nullptr }, +- { SCMP_SYS(mbind), nullptr }, +- { SCMP_SYS(get_mempolicy), nullptr }, +- { SCMP_SYS(set_mempolicy), nullptr }, +- { SCMP_SYS(migrate_pages), nullptr }, ++ { SCMP_SYS(move_pages), EPERM, nullptr }, ++ { SCMP_SYS(mbind), EPERM, nullptr }, ++ { SCMP_SYS(get_mempolicy), EPERM, nullptr }, ++ { SCMP_SYS(set_mempolicy), EPERM, nullptr }, ++ { SCMP_SYS(migrate_pages), EPERM, nullptr }, + + // Don't allow subnamespace setups: +- { SCMP_SYS(unshare), nullptr }, +- { SCMP_SYS(mount), nullptr }, +- { SCMP_SYS(pivot_root), nullptr }, +- { SCMP_SYS(clone), &cloneArg }, ++ { SCMP_SYS(unshare), EPERM, nullptr }, ++ { SCMP_SYS(setns), EPERM, nullptr }, ++ { SCMP_SYS(mount), EPERM, nullptr }, ++ { SCMP_SYS(umount), EPERM, nullptr }, ++ { SCMP_SYS(umount2), EPERM, nullptr }, ++ { SCMP_SYS(pivot_root), EPERM, nullptr }, ++ { SCMP_SYS(chroot), EPERM, nullptr }, ++ { SCMP_SYS(clone), EPERM, &cloneArg }, + + // Don't allow faking input to the controlling tty (CVE-2017-5226) +- { SCMP_SYS(ioctl), &ttyArg }, ++ { SCMP_SYS(ioctl), EPERM, &ttyArg }, ++ ++ // seccomp can't look into clone3()'s struct clone_args to check whether ++ // the flags are OK, so we have no choice but to block clone3(). ++ // Return ENOSYS so user-space will fall back to clone(). ++ // (GHSA-67h7-w3jq-vh4q; see also https://github.com/moby/moby/commit/9f6b562d) ++ { SCMP_SYS(clone3), ENOSYS, nullptr }, ++ ++ // New mount manipulation APIs can also change our VFS. There's no ++ // legitimate reason to do these in the sandbox, so block all of them ++ // rather than thinking about which ones might be dangerous. ++ // (GHSA-67h7-w3jq-vh4q) ++ { SCMP_SYS(open_tree), ENOSYS, nullptr }, ++ { SCMP_SYS(move_mount), ENOSYS, nullptr }, ++ { SCMP_SYS(fsopen), ENOSYS, nullptr }, ++ { SCMP_SYS(fsconfig), ENOSYS, nullptr }, ++ { SCMP_SYS(fsmount), ENOSYS, nullptr }, ++ { SCMP_SYS(fspick), ENOSYS, nullptr }, ++ { SCMP_SYS(mount_setattr), ENOSYS, nullptr }, + + // Profiling operations; we expect these to be done by tools from outside + // the sandbox. In particular perf has been the source of many CVEs. +- { SCMP_SYS(perf_event_open), nullptr }, ++ { SCMP_SYS(perf_event_open), EPERM, nullptr }, + // Don't allow you to switch to bsd emulation or whatnot. +- { SCMP_SYS(personality), nullptr }, +- { SCMP_SYS(ptrace), nullptr } ++ { SCMP_SYS(personality), EPERM, nullptr }, ++ { SCMP_SYS(ptrace), EPERM, nullptr } + }; + + scmp_filter_ctx seccomp = seccomp_init(SCMP_ACT_ALLOW); +@@ -661,29 +709,28 @@ static int setupSeccomp() + g_error("Failed to init seccomp"); + + for (auto& rule : syscallBlockList) { +- int scall = rule.scall; + int r; + if (rule.arg) +- r = seccomp_rule_add(seccomp, SCMP_ACT_ERRNO(EPERM), scall, 1, *rule.arg); ++ r = seccomp_rule_add(seccomp, SCMP_ACT_ERRNO(rule.errnum), rule.scall, 1, *rule.arg); + else +- r = seccomp_rule_add(seccomp, SCMP_ACT_ERRNO(EPERM), scall, 0); +- if (r == -EFAULT) { +- seccomp_release(seccomp); +- g_error("Failed to add seccomp rule"); +- } ++ r = seccomp_rule_add(seccomp, SCMP_ACT_ERRNO(rule.errnum), rule.scall, 0); ++ // EFAULT means "internal libseccomp error", but in practice we get ++ // this for syscall numbers added via Syscalls.h (flatpak-syscalls-private.h) ++ // when trying to filter them on a non-native architecture, because ++ // libseccomp cannot map the syscall number to a name and back to a ++ // number for the non-native architecture. ++ if (r == -EFAULT) ++ g_info("Unable to block syscall %d: syscall not known to libseccomp?", rule.scall); ++ else if (r < 0) ++ g_error("Failed to block syscall %d: %s", rule.scall, seccompStrerror(r)); + } + + int tmpfd = memfd_create("seccomp-bpf", 0); +- if (tmpfd == -1) { +- seccomp_release(seccomp); ++ if (tmpfd == -1) + g_error("Failed to create memfd: %s", g_strerror(errno)); +- } + +- if (seccomp_export_bpf(seccomp, tmpfd)) { +- seccomp_release(seccomp); +- close(tmpfd); +- g_error("Failed to export seccomp bpf"); +- } ++ if (int r = seccomp_export_bpf(seccomp, tmpfd)) ++ g_error("Failed to export seccomp bpf: %s", seccompStrerror(r)); + + if (lseek(tmpfd, 0, SEEK_SET) < 0) + g_error("lseek failed: %s", g_strerror(errno)); +diff --git a/Source/WebKit/UIProcess/Launcher/glib/Syscalls.h b/Source/WebKit/UIProcess/Launcher/glib/Syscalls.h +new file mode 100644 +index 00000000..18dea9a9 +--- /dev/null ++++ b/Source/WebKit/UIProcess/Launcher/glib/Syscalls.h +@@ -0,0 +1,200 @@ ++/* ++ * Copyright 2021 Collabora Ltd. ++ * SPDX-License-Identifier: LGPL-2.1-or-later ++ * ++ * This program is free software; you can redistribute it and/or ++ * modify it under the terms of the GNU Lesser General Public ++ * License as published by the Free Software Foundation; either ++ * version 2.1 of the License, or (at your option) any later version. ++ * ++ * This library is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU ++ * Lesser General Public License for more details. ++ * ++ * You should have received a copy of the GNU Lesser General Public ++ * License along with this library. If not, see . ++ */ ++ ++// This file is a copy of flatpak-syscalls-private.h, reformatted a bit to placate WebKit's style checker. ++// ++// Upstream is here: ++// https://github.com/flatpak/flatpak/blob/26b12484eb8a6219b9e7aa287b298a894b2f34ca/common/flatpak-syscalls-private.h ++ ++#pragma once ++ ++#include ++ ++#if defined(_MIPS_SIM) ++# if _MIPS_SIM == _MIPS_SIM_ABI32 ++# define FLATPAK_MISSING_SYSCALL_BASE 4000 ++# elif _MIPS_SIM == _MIPS_SIM_ABI64 ++# define FLATPAK_MISSING_SYSCALL_BASE 5000 ++# elif _MIPS_SIM == _MIPS_SIM_NABI32 ++# define FLATPAK_MISSING_SYSCALL_BASE 6000 ++# else ++# error "Unknown MIPS ABI" ++# endif ++#endif ++ ++#if defined(__ia64__) ++# define FLATPAK_MISSING_SYSCALL_BASE 1024 ++#endif ++ ++#if defined(__alpha__) ++# define FLATPAK_MISSING_SYSCALL_BASE 110 ++#endif ++ ++#if defined(__x86_64__) && defined(__ILP32__) ++# define FLATPAK_MISSING_SYSCALL_BASE 0x40000000 ++#endif ++ ++// FLATPAK_MISSING_SYSCALL_BASE: ++// ++// Number to add to the syscall numbers of recently-added syscalls ++// to get the appropriate syscall for the current ABI. ++#ifndef FLATPAK_MISSING_SYSCALL_BASE ++# define FLATPAK_MISSING_SYSCALL_BASE 0 ++#endif ++ ++#ifndef __NR_open_tree ++# define __NR_open_tree (FLATPAK_MISSING_SYSCALL_BASE + 428) ++#endif ++#ifndef __SNR_open_tree ++# define __SNR_open_tree __NR_open_tree ++#endif ++ ++#ifndef __NR_move_mount ++# define __NR_move_mount (FLATPAK_MISSING_SYSCALL_BASE + 429) ++#endif ++#ifndef __SNR_move_mount ++# define __SNR_move_mount __NR_move_mount ++#endif ++ ++#ifndef __NR_fsopen ++# define __NR_fsopen (FLATPAK_MISSING_SYSCALL_BASE + 430) ++#endif ++#ifndef __SNR_fsopen ++# define __SNR_fsopen __NR_fsopen ++#endif ++ ++#ifndef __NR_fsconfig ++# define __NR_fsconfig (FLATPAK_MISSING_SYSCALL_BASE + 431) ++#endif ++#ifndef __SNR_fsconfig ++# define __SNR_fsconfig __NR_fsconfig ++#endif ++ ++#ifndef __NR_fsmount ++# define __NR_fsmount (FLATPAK_MISSING_SYSCALL_BASE + 432) ++#endif ++#ifndef __SNR_fsmount ++# define __SNR_fsmount __NR_fsmount ++#endif ++ ++#ifndef __NR_fspick ++# define __NR_fspick (FLATPAK_MISSING_SYSCALL_BASE + 433) ++#endif ++#ifndef __SNR_fspick ++# define __SNR_fspick __NR_fspick ++#endif ++ ++#ifndef __NR_pidfd_open ++# define __NR_pidfd_open (FLATPAK_MISSING_SYSCALL_BASE + 434) ++#endif ++#ifndef __SNR_pidfd_open ++# define __SNR_pidfd_open __NR_pidfd_open ++#endif ++ ++#ifndef __NR_clone3 ++# define __NR_clone3 (FLATPAK_MISSING_SYSCALL_BASE + 435) ++#endif ++#ifndef __SNR_clone3 ++# define __SNR_clone3 __NR_clone3 ++#endif ++ ++#ifndef __NR_close_range ++# define __NR_close_range (FLATPAK_MISSING_SYSCALL_BASE + 436) ++#endif ++#ifndef __SNR_close_range ++# define __SNR_close_range __NR_close_range ++#endif ++ ++#ifndef __NR_openat2 ++# define __NR_openat2 (FLATPAK_MISSING_SYSCALL_BASE + 437) ++#endif ++#ifndef __SNR_openat2 ++# define __SNR_openat2 __NR_openat2 ++#endif ++ ++#ifndef __NR_pidfd_getfd ++# define __NR_pidfd_getfd (FLATPAK_MISSING_SYSCALL_BASE + 438) ++#endif ++#ifndef __SNR_pidfd_getfd ++# define __SNR_pidfd_getfd __NR_pidfd_getfd ++#endif ++ ++#ifndef __NR_faccessat2 ++# define __NR_faccessat2 (FLATPAK_MISSING_SYSCALL_BASE + 439) ++#endif ++#ifndef __SNR_faccessat2 ++# define __SNR_faccessat2 __NR_faccessat2 ++#endif ++ ++#ifndef __NR_process_madvise ++# define __NR_process_madvise (FLATPAK_MISSING_SYSCALL_BASE + 440) ++#endif ++#ifndef __SNR_process_madvise ++# define __SNR_process_madvise __NR_process_madvise ++#endif ++ ++#ifndef __NR_epoll_pwait2 ++# define __NR_epoll_pwait2 (FLATPAK_MISSING_SYSCALL_BASE + 441) ++#endif ++#ifndef __SNR_epoll_pwait2 ++# define __SNR_epoll_pwait2 __NR_epoll_pwait2 ++#endif ++ ++#ifndef __NR_mount_setattr ++# define __NR_mount_setattr (FLATPAK_MISSING_SYSCALL_BASE + 442) ++#endif ++#ifndef __SNR_mount_setattr ++# define __SNR_mount_setattr __NR_mount_setattr ++#endif ++ ++#ifndef __NR_quotactl_fd ++# define __NR_quotactl_fd (FLATPAK_MISSING_SYSCALL_BASE + 443) ++#endif ++#ifndef __SNR_quotactl_fd ++# define __SNR_quotactl_fd __NR_quotactl_fd ++#endif ++ ++#ifndef __NR_landlock_create_ruleset ++# define __NR_landlock_create_ruleset (FLATPAK_MISSING_SYSCALL_BASE + 444) ++#endif ++#ifndef __SNR_landlock_create_ruleset ++# define __SNR_landlock_create_ruleset __NR_landlock_create_ruleset ++#endif ++ ++#ifndef __NR_landlock_add_rule ++# define __NR_landlock_add_rule (FLATPAK_MISSING_SYSCALL_BASE + 445) ++#endif ++#ifndef __SNR_landlock_add_rule ++# define __SNR_landlock_add_rule __NR_landlock_add_rule ++#endif ++ ++#ifndef __NR_landlock_restrict_self ++# define __NR_landlock_restrict_self (FLATPAK_MISSING_SYSCALL_BASE + 446) ++#endif ++#ifndef __SNR_landlock_restrict_self ++# define __SNR_landlock_restrict_self __NR_landlock_restrict_self ++#endif ++ ++#ifndef __NR_memfd_secret ++# define __NR_memfd_secret (FLATPAK_MISSING_SYSCALL_BASE + 447) ++#endif ++#ifndef __SNR_memfd_secret ++# define __SNR_memfd_secret __NR_memfd_secret ++#endif ++ ++// Last updated: Linux 5.14, syscall numbers < 448 diff --git a/meta/recipes-sato/webkit/webkitgtk_2.30.5.bb b/meta/recipes-sato/webkit/webkitgtk_2.30.5.bb index 88b5056165..93cca20d01 100644 --- a/meta/recipes-sato/webkit/webkitgtk_2.30.5.bb +++ b/meta/recipes-sato/webkit/webkitgtk_2.30.5.bb @@ -22,6 +22,7 @@ SRC_URI = "https://www.webkitgtk.org/releases/${BPN}-${PV}.tar.xz \ file://musl-lower-stack-usage.patch \ file://0001-MiniBrowser-Fix-reproduciblity.patch \ file://reproducibility.patch \ + file://CVE-2021-42762.patch \ " SRC_URI[sha256sum] = "7d0dab08e3c5ae07bec80b2822ef42e952765d5724cac86eb23999bfed5a7f1f" From patchwork Tue Jan 11 14:32:46 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Mittal, Anuj" X-Patchwork-Id: 2250 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain 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RFxbsEGNM78V+R3i5gz7pJcY/6ZcUyJYwROQroUclKthBNlC3SVq2NjHR hgLcpuUXhCNKQuDyAXDylXOjAoHEp8HQXGOa7aFDL1Iu+S/6hkGUQ7T5g iId+j1AB+g0Ve8I9qy3Sn3nWiG+QngSYXPBUs+NpvNchR/PZRvwc+16tQ g==; X-IronPort-AV: E=McAfee;i="6200,9189,10223"; a="224192530" X-IronPort-AV: E=Sophos;i="5.88,279,1635231600"; d="scan'208";a="224192530" Received: from orsmga004.jf.intel.com ([10.7.209.38]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Jan 2022 06:33:09 -0800 X-IronPort-AV: E=Sophos;i="5.88,279,1635231600"; d="scan'208";a="623086341" Received: from wongkye-mobl3.gar.corp.intel.com (HELO anmitta2-mobl3.intel.com) ([10.213.137.187]) by orsmga004-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Jan 2022 06:33:02 -0800 From: Anuj Mittal To: openembedded-core@lists.openembedded.org Subject: [hardknott][PATCH 2/9] gcc: add aarch64 support for Arm's Neoverse N2 CPU Date: Tue, 11 Jan 2022 22:32:46 +0800 Message-Id: X-Mailer: git-send-email 2.34.1 In-Reply-To: References: MIME-Version: 1.0 List-Id: X-Webhook-Received: from li982-79.members.linode.com [45.33.32.79] by aws-us-west-2-korg-lkml-1.web.codeaurora.org with HTTPS for ; Tue, 11 Jan 2022 14:33:15 -0000 X-Groupsio-URL: https://lists.openembedded.org/g/openembedded-core/message/160404 From: pgowda The patch backports the AArch64 support for Arm's Neoverse N2 CPU Upstream-Status: Backport [https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff;h=9428e9267435a62f672e2ba42df46432c021a9cf] Signed-off-by: pgowda Signed-off-by: Anuj Mittal --- meta/recipes-devtools/gcc/gcc-10.2.inc | 1 + .../gcc/0039-arm64-neoverse-n2-support.patch | 60 +++++++++++++++++++ 2 files changed, 61 insertions(+) create mode 100644 meta/recipes-devtools/gcc/gcc/0039-arm64-neoverse-n2-support.patch diff --git a/meta/recipes-devtools/gcc/gcc-10.2.inc b/meta/recipes-devtools/gcc/gcc-10.2.inc index 5626bf20f0..89158258d7 100644 --- a/meta/recipes-devtools/gcc/gcc-10.2.inc +++ b/meta/recipes-devtools/gcc/gcc-10.2.inc @@ -74,6 +74,7 @@ SRC_URI = "\ file://0002-CVE-2021-35465.patch \ file://0003-CVE-2021-35465.patch \ file://0004-CVE-2021-35465.patch \ + file://0039-arm64-neoverse-n2-support.patch \ " SRC_URI[sha256sum] = "b8dd4368bb9c7f0b98188317ee0254dd8cc99d1e3a18d0ff146c855fe16c1d8c" diff --git a/meta/recipes-devtools/gcc/gcc/0039-arm64-neoverse-n2-support.patch b/meta/recipes-devtools/gcc/gcc/0039-arm64-neoverse-n2-support.patch new file mode 100644 index 0000000000..b3e0f396bd --- /dev/null +++ b/meta/recipes-devtools/gcc/gcc/0039-arm64-neoverse-n2-support.patch @@ -0,0 +1,60 @@ +From 9428e9267435a62f672e2ba42df46432c021a9cf Mon Sep 17 00:00:00 2001 +From: Alex Coplan +Date: Tue, 29 Sep 2020 17:09:09 +0100 +Subject: [PATCH] aarch64: Add support for Neoverse N2 CPU + +This patch backports the AArch64 support for Arm's Neoverse N2 CPU to +GCC 10. + +gcc/ChangeLog: + + * config/aarch64/aarch64-cores.def: Add Neoverse N2. + * config/aarch64/aarch64-tune.md: Regenerate. + * doc/invoke.texi: Document AArch64 support for Neoverse N2. + +Upstream-Status: Backport [https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff;h=9428e9267435a62f672e2ba42df46432c021a9cf] + +Signed-off-by: pgowda +--- + gcc/config/aarch64/aarch64-cores.def | 3 +++ + gcc/config/aarch64/aarch64-tune.md | 2 +- + gcc/doc/invoke.texi | 4 ++-- + 3 files changed, 6 insertions(+), 3 deletions(-) + +diff --git a/gcc/config/aarch64/aarch64-cores.def b/gcc/config/aarch64/aarch64-cores.def +--- a/gcc/config/aarch64/aarch64-cores.def 2020-07-22 23:35:17.320384289 -0700 ++++ b/gcc/config/aarch64/aarch64-cores.def 2021-12-21 01:08:45.518472342 -0800 +@@ -135,6 +135,9 @@ AARCH64_CORE("zeus", zeus, cortexa57, 8_ + /* Qualcomm ('Q') cores. */ + AARCH64_CORE("saphira", saphira, saphira, 8_4A, AARCH64_FL_FOR_ARCH8_4 | AARCH64_FL_CRYPTO | AARCH64_FL_RCPC, saphira, 0x51, 0xC01, -1) + ++/* Armv8.5-A Architecture Processors. */ ++AARCH64_CORE("neoverse-n2", neoversen2, cortexa57, 8_5A, AARCH64_FL_FOR_ARCH8_5 | AARCH64_FL_I8MM | AARCH64_FL_BF16 | AARCH64_FL_F16 | AARCH64_FL_SVE | AARCH64_FL_SVE2 | AARCH64_FL_SVE2_BITPERM | AARCH64_FL_RNG | AARCH64_FL_MEMTAG, neoversen1, 0x41, 0xd49, -1) ++ + /* ARMv8-A big.LITTLE implementations. */ + + AARCH64_CORE("cortex-a57.cortex-a53", cortexa57cortexa53, cortexa53, 8A, AARCH64_FL_FOR_ARCH8 | AARCH64_FL_CRC, cortexa57, 0x41, AARCH64_BIG_LITTLE (0xd07, 0xd03), -1) +diff --git a/gcc/config/aarch64/aarch64-tune.md b/gcc/config/aarch64/aarch64-tune.md +--- a/gcc/config/aarch64/aarch64-tune.md 2020-07-22 23:35:54.684795913 -0700 ++++ b/gcc/config/aarch64/aarch64-tune.md 2021-12-21 01:09:56.829252050 -0800 +@@ -1,5 +1,5 @@ + ;; -*- buffer-read-only: t -*- + ;; Generated automatically by gentune.sh from aarch64-cores.def + (define_attr "tune" +- "cortexa34,cortexa35,cortexa53,cortexa57,cortexa72,cortexa73,thunderx,thunderxt88p1,thunderxt88,octeontx,octeontxt81,octeontxt83,thunderxt81,thunderxt83,emag,xgene1,falkor,qdf24xx,exynosm1,phecda,thunderx2t99p1,vulcan,thunderx2t99,cortexa55,cortexa75,cortexa76,cortexa76ae,cortexa77,cortexa65,cortexa65ae,ares,neoversen1,neoversee1,octeontx2,octeontx2t98,octeontx2t96,octeontx2t93,octeontx2f95,octeontx2f95n,octeontx2f95mm,tsv110,thunderx3t110,zeus,saphira,cortexa57cortexa53,cortexa72cortexa53,cortexa73cortexa35,cortexa73cortexa53,cortexa75cortexa55,cortexa76cortexa55" ++ "cortexa34,cortexa35,cortexa53,cortexa57,cortexa72,cortexa73,thunderx,thunderxt88p1,thunderxt88,octeontx,octeontxt81,octeontxt83,thunderxt81,thunderxt83,emag,xgene1,falkor,qdf24xx,exynosm1,phecda,thunderx2t99p1,vulcan,thunderx2t99,cortexa55,cortexa75,cortexa76,cortexa76ae,cortexa77,cortexa65,cortexa65ae,ares,neoversen1,neoversee1,octeontx2,octeontx2t98,octeontx2t96,octeontx2t93,octeontx2f95,octeontx2f95n,octeontx2f95mm,tsv110,thunderx3t110,zeus,neoversen2,saphira,cortexa57cortexa53,cortexa72cortexa53,cortexa73cortexa35,cortexa73cortexa53,cortexa75cortexa55,cortexa76cortexa55" + (const (symbol_ref "((enum attr_tune) aarch64_tune)"))) +diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi +--- a/gcc/doc/invoke.texi 2021-12-21 00:50:18.345426447 -0800 ++++ b/gcc/doc/invoke.texi 2021-12-21 01:11:18.547853686 -0800 +@@ -17010,8 +17010,8 @@ performance of the code. Permissible va + @samp{cortex-a57}, @samp{cortex-a72}, @samp{cortex-a73}, @samp{cortex-a75}, + @samp{cortex-a76}, @samp{cortex-a76ae}, @samp{cortex-a77}, + @samp{cortex-a65}, @samp{cortex-a65ae}, @samp{cortex-a34}, +-@samp{ares}, @samp{exynos-m1}, @samp{emag}, @samp{falkor}, +-@samp{neoverse-e1},@samp{neoverse-n1},@samp{qdf24xx}, @samp{saphira}, ++@samp{ares}, @samp{exynos-m1}, @samp{emag}, @samp{falkor}, @samp{neoverse-e1}, ++@samp{neoverse-n1}, @samp{neoverse-n2}, @samp{qdf24xx}, @samp{saphira}, + @samp{phecda}, @samp{xgene1}, @samp{vulcan}, @samp{octeontx}, + @samp{octeontx81}, @samp{octeontx83}, + @samp{octeontx2}, @samp{octeontx2t98}, @samp{octeontx2t96} From patchwork Tue Jan 11 14:32:47 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Mittal, Anuj" X-Patchwork-Id: 2249 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id ACA16C433F5 for ; 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X-IronPort-AV: E=McAfee;i="6200,9189,10223"; a="224192531" X-IronPort-AV: E=Sophos;i="5.88,279,1635231600"; d="scan'208";a="224192531" Received: from orsmga004.jf.intel.com ([10.7.209.38]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Jan 2022 06:33:09 -0800 X-IronPort-AV: E=Sophos;i="5.88,279,1635231600"; d="scan'208";a="623086361" Received: from wongkye-mobl3.gar.corp.intel.com (HELO anmitta2-mobl3.intel.com) ([10.213.137.187]) by orsmga004-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Jan 2022 06:33:04 -0800 From: Anuj Mittal To: openembedded-core@lists.openembedded.org Subject: [hardknott][PATCH 3/9] lib/oe/reproducible: correctly set .git location when recursively looking for git repos Date: Tue, 11 Jan 2022 22:32:47 +0800 Message-Id: <2ff5c37f70e8c465cdbc61eea1d2d2a2be9bd84f.1641911316.git.anuj.mittal@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: References: MIME-Version: 1.0 List-Id: X-Webhook-Received: from li982-79.members.linode.com [45.33.32.79] by aws-us-west-2-korg-lkml-1.web.codeaurora.org with HTTPS for ; Tue, 11 Jan 2022 14:33:12 -0000 X-Groupsio-URL: https://lists.openembedded.org/g/openembedded-core/message/160405 From: Alexander Kanavin Signed-off-by: Alexander Kanavin Signed-off-by: Richard Purdie (cherry picked from commit ffdaa1a0527691d66dd28e86bd015bfad7a020f6) Signed-off-by: Anuj Mittal --- meta/lib/oe/reproducible.py | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/meta/lib/oe/reproducible.py b/meta/lib/oe/reproducible.py index 204b9bd734..0938e4cb39 100644 --- a/meta/lib/oe/reproducible.py +++ b/meta/lib/oe/reproducible.py @@ -41,7 +41,7 @@ def find_git_folder(d, sourcedir): for root, dirs, files in os.walk(workdir, topdown=True): dirs[:] = [d for d in dirs if d not in exclude] if '.git' in dirs: - return root + return os.path.join(root, ".git") bb.warn("Failed to find a git repository in WORKDIR: %s" % workdir) return None From patchwork Tue Jan 11 14:32:48 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Mittal, Anuj" X-Patchwork-Id: 2253 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 97131C433F5 for ; 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X-IronPort-AV: E=McAfee;i="6200,9189,10223"; a="242307067" X-IronPort-AV: E=Sophos;i="5.88,279,1635231600"; d="scan'208";a="242307067" Received: from orsmga004.jf.intel.com ([10.7.209.38]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Jan 2022 06:33:10 -0800 X-IronPort-AV: E=Sophos;i="5.88,279,1635231600"; d="scan'208";a="623086386" Received: from wongkye-mobl3.gar.corp.intel.com (HELO anmitta2-mobl3.intel.com) ([10.213.137.187]) by orsmga004-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Jan 2022 06:33:05 -0800 From: Anuj Mittal To: openembedded-core@lists.openembedded.org Subject: [hardknott][PATCH 4/9] grub2: fix CVE-2021-3981 Date: Tue, 11 Jan 2022 22:32:48 +0800 Message-Id: X-Mailer: git-send-email 2.34.1 In-Reply-To: References: MIME-Version: 1.0 List-Id: X-Webhook-Received: from li982-79.members.linode.com [45.33.32.79] by aws-us-west-2-korg-lkml-1.web.codeaurora.org with HTTPS for ; Tue, 11 Jan 2022 14:33:18 -0000 X-Groupsio-URL: https://lists.openembedded.org/g/openembedded-core/message/160411 From: Yongxin Liu Signed-off-by: Yongxin Liu Signed-off-by: Richard Purdie (cherry picked from commit bb554d14142f93c39fd1516a31757006531c348f) Signed-off-by: Anuj Mittal --- ...onfig-Restore-umask-for-the-grub.cfg.patch | 49 +++++++++++++++++++ meta/recipes-bsp/grub/grub2.inc | 1 + 2 files changed, 50 insertions(+) create mode 100644 meta/recipes-bsp/grub/files/CVE-2021-3981-grub-mkconfig-Restore-umask-for-the-grub.cfg.patch diff --git a/meta/recipes-bsp/grub/files/CVE-2021-3981-grub-mkconfig-Restore-umask-for-the-grub.cfg.patch b/meta/recipes-bsp/grub/files/CVE-2021-3981-grub-mkconfig-Restore-umask-for-the-grub.cfg.patch new file mode 100644 index 0000000000..dae26fd8bb --- /dev/null +++ b/meta/recipes-bsp/grub/files/CVE-2021-3981-grub-mkconfig-Restore-umask-for-the-grub.cfg.patch @@ -0,0 +1,49 @@ +From 0adec29674561034771c13e446069b41ef41e4d4 Mon Sep 17 00:00:00 2001 +From: Michael Chang +Date: Fri, 3 Dec 2021 16:13:28 +0800 +Subject: [PATCH] grub-mkconfig: Restore umask for the grub.cfg + +The commit ab2e53c8a (grub-mkconfig: Honor a symlink when generating +configuration by grub-mkconfig) has inadvertently discarded umask for +creating grub.cfg in the process of running grub-mkconfig. The resulting +wrong permission (0644) would allow unprivileged users to read GRUB +configuration file content. This presents a low confidentiality risk +as grub.cfg may contain non-secured plain-text passwords. + +This patch restores the missing umask and sets the creation file mode +to 0600 preventing unprivileged access. + +Fixes: CVE-2021-3981 + +Signed-off-by: Michael Chang +Reviewed-by: Daniel Kiper + +Upstream-Status: Backport +CVE: CVE-2021-3981 + +Reference to upstream patch: +https://git.savannah.gnu.org/cgit/grub.git/commit/?id=0adec29674561034771c13e446069b41ef41e4d4 + +Signed-off-by: Yongxin Liu +--- + util/grub-mkconfig.in | 3 +++ + 1 file changed, 3 insertions(+) + +diff --git a/util/grub-mkconfig.in b/util/grub-mkconfig.in +index c3ea7612e..62335d027 100644 +--- a/util/grub-mkconfig.in ++++ b/util/grub-mkconfig.in +@@ -301,7 +301,10 @@ and /etc/grub.d/* files or please file a bug report with + exit 1 + else + # none of the children aborted with error, install the new grub.cfg ++ oldumask=$(umask) ++ umask 077 + cat ${grub_cfg}.new > ${grub_cfg} ++ umask $oldumask + rm -f ${grub_cfg}.new + fi + fi +-- +2.31.1 + diff --git a/meta/recipes-bsp/grub/grub2.inc b/meta/recipes-bsp/grub/grub2.inc index 3c6b434c2d..a70754e346 100644 --- a/meta/recipes-bsp/grub/grub2.inc +++ b/meta/recipes-bsp/grub/grub2.inc @@ -20,6 +20,7 @@ SRC_URI = "https://alpha.gnu.org/gnu/grub/grub-${REALPV}.tar.xz \ file://0001-grub.d-10_linux.in-add-oe-s-kernel-name.patch \ file://determinism.patch \ file://0001-RISC-V-Restore-the-typcast-to-long.patch \ + file://CVE-2021-3981-grub-mkconfig-Restore-umask-for-the-grub.cfg.patch \ " SRC_URI[sha256sum] = "2c87f1f21e2ab50043e6cd9163c08f1b6c3a6171556bf23ff9ed65b074145484" From patchwork Tue Jan 11 14:32:49 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: "Mittal, Anuj" X-Patchwork-Id: 2258 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id C4D3CC433EF for ; Tue, 11 Jan 2022 14:33:15 +0000 (UTC) Received: from mga05.intel.com (mga05.intel.com [192.55.52.43]) by mx.groups.io with SMTP id smtpd.web12.7795.1641911594309733958 for ; Tue, 11 Jan 2022 06:33:14 -0800 Authentication-Results: mx.groups.io; dkim=fail reason="unable to parse pub key" header.i=@intel.com header.s=intel header.b=as8ALMVN; spf=pass (domain: intel.com, ip: 192.55.52.43, mailfrom: anuj.mittal@intel.com) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1641911594; x=1673447594; h=from:to:subject:date:message-id:in-reply-to:references: mime-version:content-transfer-encoding; bh=9MXgtg3+BX9Ua9k+f8XDA3JXMiHKDRUcoeRe85bKjFk=; b=as8ALMVNIMnbrIoEbw1n6y1CwwSMUzStaXFzB0vmX0JUm9dR2+JzxWeV R5N0Ng2zTk2yI6lTGwkd5I+o0o6qFZwMH+W4ti52/mu27abtTp1YGfJnL vlq4p0u17oxe+D2oznCM3SMp4oeelOaJDeybzAxnJDFbtH99YpO2ktNyk S26sdMe+Zo8F1AuDW7N6WJhVd01R3flSuEsDaMSD0H3nWLQETgiywHqkw dar7eYTiqdEe2TOodFoFPkxEbGvvwOxbxfys0maOES+qQ50su+Hp6Quhl CYw5w3Jjb4Am2TAjzD/lqOOM/oHXckqCbktROnsNwTYNik86ydqVFxliP g==; X-IronPort-AV: E=McAfee;i="6200,9189,10223"; a="329839003" X-IronPort-AV: E=Sophos;i="5.88,279,1635231600"; d="scan'208";a="329839003" Received: from orsmga004.jf.intel.com ([10.7.209.38]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Jan 2022 06:33:12 -0800 X-IronPort-AV: E=Sophos;i="5.88,279,1635231600"; d="scan'208";a="623086405" Received: from wongkye-mobl3.gar.corp.intel.com (HELO anmitta2-mobl3.intel.com) ([10.213.137.187]) by orsmga004-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Jan 2022 06:33:07 -0800 From: Anuj Mittal To: openembedded-core@lists.openembedded.org Subject: [hardknott][PATCH 5/9] gcc: Fix CVE-2021-42574 Date: Tue, 11 Jan 2022 22:32:49 +0800 Message-Id: X-Mailer: git-send-email 2.34.1 In-Reply-To: References: MIME-Version: 1.0 List-Id: X-Webhook-Received: from li982-79.members.linode.com [45.33.32.79] by aws-us-west-2-korg-lkml-1.web.codeaurora.org with HTTPS for ; Tue, 11 Jan 2022 14:33:15 -0000 X-Groupsio-URL: https://lists.openembedded.org/g/openembedded-core/message/160406 From: pgowda Upstream-Status: Backport [https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=004bb936d6d5f177af26ad4905595e843d5665a5] Upstream-Status: Backport [https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=bd5e882cf6e0def3dd1bc106075d59a303fe0d1e] Upstream-Status: Backport [https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=51c500269bf53749b107807d84271385fad35628] Upstream-Status: Backport [https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=1a7f2c0774129750fdf73e9f1b78f0ce983c9ab3] Upstream-Status: Backport [https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=bef32d4a28595e933f24fef378cf052a30b674a7] Signed-off-by: pgowda Signed-off-by: Anuj Mittal --- meta/recipes-devtools/gcc/gcc-10.2.inc | 5 + .../gcc/gcc/0001-CVE-2021-42574.patch | 2906 +++++++++++++++++ .../gcc/gcc/0002-CVE-2021-42574.patch | 2270 +++++++++++++ .../gcc/gcc/0003-CVE-2021-42574.patch | 1724 ++++++++++ .../gcc/gcc/0004-CVE-2021-42574.patch | 138 + .../gcc/gcc/0005-CVE-2021-42574.patch | 575 ++++ 6 files changed, 7618 insertions(+) create mode 100644 meta/recipes-devtools/gcc/gcc/0001-CVE-2021-42574.patch create mode 100644 meta/recipes-devtools/gcc/gcc/0002-CVE-2021-42574.patch create mode 100644 meta/recipes-devtools/gcc/gcc/0003-CVE-2021-42574.patch create mode 100644 meta/recipes-devtools/gcc/gcc/0004-CVE-2021-42574.patch create mode 100644 meta/recipes-devtools/gcc/gcc/0005-CVE-2021-42574.patch diff --git a/meta/recipes-devtools/gcc/gcc-10.2.inc b/meta/recipes-devtools/gcc/gcc-10.2.inc index 89158258d7..656c43258c 100644 --- a/meta/recipes-devtools/gcc/gcc-10.2.inc +++ b/meta/recipes-devtools/gcc/gcc-10.2.inc @@ -75,6 +75,11 @@ SRC_URI = "\ file://0003-CVE-2021-35465.patch \ file://0004-CVE-2021-35465.patch \ file://0039-arm64-neoverse-n2-support.patch \ + file://0001-CVE-2021-42574.patch \ + file://0002-CVE-2021-42574.patch \ + file://0003-CVE-2021-42574.patch \ + file://0004-CVE-2021-42574.patch \ + file://0005-CVE-2021-42574.patch \ " SRC_URI[sha256sum] = "b8dd4368bb9c7f0b98188317ee0254dd8cc99d1e3a18d0ff146c855fe16c1d8c" diff --git a/meta/recipes-devtools/gcc/gcc/0001-CVE-2021-42574.patch b/meta/recipes-devtools/gcc/gcc/0001-CVE-2021-42574.patch new file mode 100644 index 0000000000..e0f4f7d32f --- /dev/null +++ b/meta/recipes-devtools/gcc/gcc/0001-CVE-2021-42574.patch @@ -0,0 +1,2906 @@ +From 004bb936d6d5f177af26ad4905595e843d5665a5 Mon Sep 17 00:00:00 2001 +From: Lewis Hyatt +Date: Tue, 14 Jul 2020 12:05:56 -0400 +Subject: [PATCH] diagnostics: Support conversion of tabs to spaces [PR49973] + [PR86904] + +Supports conversion of tabs to spaces when outputting diagnostics. Also +adds -fdiagnostics-column-unit and -fdiagnostics-column-origin options to +control how the column number is output, thereby resolving the two PRs. + +gcc/c-family/ChangeLog: + + PR other/86904 + * c-indentation.c (should_warn_for_misleading_indentation): Get + global tabstop from the new source. + * c-opts.c (c_common_handle_option): Remove handling of -ftabstop, which + is now a common option. + * c.opt: Likewise. + +gcc/ChangeLog: + + PR preprocessor/49973 + PR other/86904 + * common.opt: Handle -ftabstop here instead of in c-family + options. Add -fdiagnostics-column-unit= and + -fdiagnostics-column-origin= options. + * opts.c (common_handle_option): Handle the new options. + * diagnostic-format-json.cc (json_from_expanded_location): Add + diagnostic_context argument. Use it to convert column numbers as per + the new options. + (json_from_location_range): Likewise. + (json_from_fixit_hint): Likewise. + (json_end_diagnostic): Pass the new context argument to helper + functions above. Add "column-origin" field to the output. + (test_unknown_location): Add the new context argument to calls to + helper functions. + (test_bad_endpoints): Likewise. + * diagnostic-show-locus.c + (exploc_with_display_col::exploc_with_display_col): Support + tabstop parameter. + (layout_point::layout_point): Make use of class + exploc_with_display_col. + (layout_range::layout_range): Likewise. + (struct line_bounds): Clarify that the units are now always + display columns. Rename members accordingly. Add constructor. + (layout::print_source_line): Add support for tab expansion. + (make_range): Adapt to class layout_range changes. + (layout::maybe_add_location_range): Likewise. + (layout::layout): Adapt to class exploc_with_display_col changes. + (layout::calculate_x_offset_display): Support tabstop parameter. + (layout::print_annotation_line): Adapt to struct line_bounds changes. + (layout::print_line): Likewise. + (line_label::line_label): Add diagnostic_context argument. + (get_affected_range): Likewise. + (get_printed_columns): Likewise. + (layout::print_any_labels): Adapt to struct line_label changes. + (class correction): Add m_tabstop member. + (correction::correction): Add tabstop argument. + (correction::compute_display_cols): Use m_tabstop. + (class line_corrections): Add m_context member. + (line_corrections::line_corrections): Add diagnostic_context argument. + (line_corrections::add_hint): Use m_context to handle tabstops. + (layout::print_trailing_fixits): Adapt to class line_corrections + changes. + (test_layout_x_offset_display_utf8): Support tabstop parameter. + (test_layout_x_offset_display_tab): New selftest. + (test_one_liner_colorized_utf8): Likewise. + (test_tab_expansion): Likewise. + (test_diagnostic_show_locus_one_liner_utf8): Call the new tests. + (diagnostic_show_locus_c_tests): Likewise. + (test_overlapped_fixit_printing): Adapt to helper class and + function changes. + (test_overlapped_fixit_printing_utf8): Likewise. + (test_overlapped_fixit_printing_2): Likewise. + * diagnostic.h (enum diagnostics_column_unit): New enum. + (struct diagnostic_context): Add members for the new options. + (diagnostic_converted_column): Declare. + (json_from_expanded_location): Add new context argument. + * diagnostic.c (diagnostic_initialize): Initialize new members. + (diagnostic_converted_column): New function. + (maybe_line_and_column): Be willing to output a column of 0. + (diagnostic_get_location_text): Convert column number as per the new + options. + (diagnostic_report_current_module): Likewise. + (assert_location_text): Add origin and column_unit arguments for + testing the new functionality. + (test_diagnostic_get_location_text): Test the new functionality. + * doc/invoke.texi: Document the new options and behavior. + * input.h (location_compute_display_column): Add tabstop argument. + * input.c (location_compute_display_column): Likewise. + (test_cpp_utf8): Add selftests for tab expansion. + * tree-diagnostic-path.cc (default_tree_make_json_for_path): Pass the + new context argument to json_from_expanded_location(). + +libcpp/ChangeLog: + + PR preprocessor/49973 + PR other/86904 + * include/cpplib.h (struct cpp_options): Removed support for -ftabstop, + which is now handled by diagnostic_context. + (class cpp_display_width_computation): New class. + (cpp_byte_column_to_display_column): Add optional tabstop argument. + (cpp_display_width): Likewise. + (cpp_display_column_to_byte_column): Likewise. + * charset.c + (cpp_display_width_computation::cpp_display_width_computation): New + function. + (cpp_display_width_computation::advance_display_cols): Likewise. + (compute_next_display_width): Removed and implemented this + functionality in a new function... + (cpp_display_width_computation::process_next_codepoint): ...here. + (cpp_byte_column_to_display_column): Added tabstop argument. + Reimplemented in terms of class cpp_display_width_computation. + (cpp_display_column_to_byte_column): Likewise. + * init.c (cpp_create_reader): Remove handling of -ftabstop, which is now + handled by diagnostic_context. + +gcc/testsuite/ChangeLog: + + PR preprocessor/49973 + PR other/86904 + * c-c++-common/Wmisleading-indentation-3.c: Adjust expected output + for new defaults. + * c-c++-common/Wmisleading-indentation.c: Likewise. + * c-c++-common/diagnostic-format-json-1.c: Likewise. + * c-c++-common/diagnostic-format-json-2.c: Likewise. + * c-c++-common/diagnostic-format-json-3.c: Likewise. + * c-c++-common/diagnostic-format-json-4.c: Likewise. + * c-c++-common/diagnostic-format-json-5.c: Likewise. + * c-c++-common/missing-close-symbol.c: Likewise. + * g++.dg/diagnostic/bad-binary-ops.C: Likewise. + * g++.dg/parse/error4.C: Likewise. + * g++.old-deja/g++.brendan/crash11.C: Likewise. + * g++.old-deja/g++.pt/overload2.C: Likewise. + * g++.old-deja/g++.robertl/eb109.C: Likewise. + * gcc.dg/analyzer/malloc-paths-9.c: Likewise. + * gcc.dg/bad-binary-ops.c: Likewise. + * gcc.dg/format/branch-1.c: Likewise. + * gcc.dg/format/pr79210.c: Likewise. + * gcc.dg/plugin/diagnostic-test-expressions-1.c: Likewise. + * gcc.dg/plugin/diagnostic-test-string-literals-1.c: Likewise. + * gcc.dg/redecl-4.c: Likewise. + * gfortran.dg/diagnostic-format-json-1.F90: Likewise. + * gfortran.dg/diagnostic-format-json-2.F90: Likewise. + * gfortran.dg/diagnostic-format-json-3.F90: Likewise. + * go.dg/arrayclear.go: Add a comment explaining why adding a + comment was necessary to work around a dejagnu bug. + * c-c++-common/diagnostic-units-1.c: New test. + * c-c++-common/diagnostic-units-2.c: New test. + * c-c++-common/diagnostic-units-3.c: New test. + * c-c++-common/diagnostic-units-4.c: New test. + * c-c++-common/diagnostic-units-5.c: New test. + * c-c++-common/diagnostic-units-6.c: New test. + * c-c++-common/diagnostic-units-7.c: New test. + * c-c++-common/diagnostic-units-8.c: New test. + +CVE: CVE-2021-42574 +Upstream-Status: Backport [https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=004bb936d6d5f177af26ad4905595e843d5665a5] +Signed-off-by: Pgowda +--- + gcc/c-family/c-indentation.c | 5 +- + gcc/c-family/c-opts.c | 6 - + gcc/c-family/c.opt | 4 - + gcc/common.opt | 21 + + gcc/diagnostic-format-json.cc | 55 +- + gcc/diagnostic-show-locus.c | 504 +++++++++++++----- + gcc/diagnostic.c | 113 +++- + gcc/diagnostic.h | 28 +- + gcc/doc/invoke.texi | 68 ++- + gcc/input.c | 72 ++- + gcc/input.h | 4 +- + gcc/opts.c | 14 + + .../c-c++-common/Wmisleading-indentation-3.c | 12 +- + .../c-c++-common/Wmisleading-indentation.c | 6 +- + .../c-c++-common/diagnostic-format-json-1.c | 5 + + .../c-c++-common/diagnostic-format-json-2.c | 5 + + .../c-c++-common/diagnostic-format-json-3.c | 5 + + .../c-c++-common/diagnostic-format-json-4.c | 9 + + .../c-c++-common/diagnostic-format-json-5.c | 9 + + .../c-c++-common/diagnostic-units-1.c | 28 + + .../c-c++-common/diagnostic-units-2.c | 28 + + .../c-c++-common/diagnostic-units-3.c | 28 + + .../c-c++-common/diagnostic-units-4.c | 28 + + .../c-c++-common/diagnostic-units-5.c | 28 + + .../c-c++-common/diagnostic-units-6.c | 28 + + .../c-c++-common/diagnostic-units-7.c | 28 + + .../c-c++-common/diagnostic-units-8.c | 28 + + .../c-c++-common/missing-close-symbol.c | 6 +- + .../g++.dg/diagnostic/bad-binary-ops.C | 8 +- + gcc/testsuite/g++.dg/parse/error4.C | 2 +- + .../g++.old-deja/g++.brendan/crash11.C | 4 +- + gcc/testsuite/g++.old-deja/g++.pt/overload2.C | 2 +- + .../g++.old-deja/g++.robertl/eb109.C | 4 +- + .../gcc.dg/analyzer/malloc-paths-9.c | 2 +- + gcc/testsuite/gcc.dg/bad-binary-ops.c | 8 +- + gcc/testsuite/gcc.dg/format/branch-1.c | 2 +- + gcc/testsuite/gcc.dg/format/pr79210.c | 2 +- + .../plugin/diagnostic-test-expressions-1.c | 16 +- + .../diagnostic-test-string-literals-1.c | 4 +- + gcc/testsuite/gcc.dg/redecl-4.c | 2 +- + .../gfortran.dg/diagnostic-format-json-1.F90 | 5 + + .../gfortran.dg/diagnostic-format-json-2.F90 | 5 + + .../gfortran.dg/diagnostic-format-json-3.F90 | 5 + + gcc/testsuite/go.dg/arrayclear.go | 3 + + gcc/tree-diagnostic-path.cc | 5 +- + libcpp/charset.c | 98 ++-- + libcpp/include/cpplib.h | 40 +- + libcpp/init.c | 1 - + 48 files changed, 1106 insertions(+), 287 deletions(-) + create mode 100644 gcc/testsuite/c-c++-common/diagnostic-units-1.c + create mode 100644 gcc/testsuite/c-c++-common/diagnostic-units-2.c + create mode 100644 gcc/testsuite/c-c++-common/diagnostic-units-3.c + create mode 100644 gcc/testsuite/c-c++-common/diagnostic-units-4.c + create mode 100644 gcc/testsuite/c-c++-common/diagnostic-units-5.c + create mode 100644 gcc/testsuite/c-c++-common/diagnostic-units-6.c + create mode 100644 gcc/testsuite/c-c++-common/diagnostic-units-7.c + create mode 100644 gcc/testsuite/c-c++-common/diagnostic-units-8.c + +diff --git a/gcc/c-family/c-indentation.c b/gcc/c-family/c-indentation.c +--- a/gcc/c-family/c-indentation.c 2020-07-22 23:35:17.296384022 -0700 ++++ b/gcc/c-family/c-indentation.c 2021-12-25 01:20:53.475636694 -0800 +@@ -24,8 +24,7 @@ along with GCC; see the file COPYING3. + #include "c-common.h" + #include "c-indentation.h" + #include "selftest.h" +- +-extern cpp_options *cpp_opts; ++#include "diagnostic.h" + + /* Round up VIS_COLUMN to nearest tab stop. */ + +@@ -294,7 +293,7 @@ should_warn_for_misleading_indentation ( + expanded_location next_stmt_exploc = expand_location (next_stmt_loc); + expanded_location guard_exploc = expand_location (guard_loc); + +- const unsigned int tab_width = cpp_opts->tabstop; ++ const unsigned int tab_width = global_dc->tabstop; + + /* They must be in the same file. */ + if (next_stmt_exploc.file != body_exploc.file) +diff --git a/gcc/c-family/c.opt b/gcc/c-family/c.opt +--- a/gcc/c-family/c.opt 2021-12-24 20:23:42.816809230 -0800 ++++ b/gcc/c-family/c.opt 2021-12-25 01:20:53.475636694 -0800 +@@ -1876,10 +1876,6 @@ Enum(strong_eval_order) String(some) Val + EnumValue + Enum(strong_eval_order) String(all) Value(2) + +-ftabstop= +-C ObjC C++ ObjC++ Joined RejectNegative UInteger +--ftabstop= Distance between tab stops for column reporting. +- + ftemplate-backtrace-limit= + C++ ObjC++ Joined RejectNegative UInteger Var(template_backtrace_limit) Init(10) + Set the maximum number of template instantiation notes for a single warning or error. +diff --git a/gcc/c-family/c-opts.c b/gcc/c-family/c-opts.c +--- a/gcc/c-family/c-opts.c 2021-12-24 20:23:44.824774786 -0800 ++++ b/gcc/c-family/c-opts.c 2021-12-25 01:20:53.475636694 -0800 +@@ -504,12 +504,6 @@ c_common_handle_option (size_t scode, co + cpp_opts->track_macro_expansion = 2; + break; + +- case OPT_ftabstop_: +- /* It is documented that we silently ignore silly values. */ +- if (value >= 1 && value <= 100) +- cpp_opts->tabstop = value; +- break; +- + case OPT_fexec_charset_: + cpp_opts->narrow_charset = arg; + break; +diff --git a/gcc/common.opt b/gcc/common.opt +--- a/gcc/common.opt 2021-12-24 20:23:42.480814993 -0800 ++++ b/gcc/common.opt 2021-12-25 01:20:53.475636694 -0800 +@@ -1325,6 +1325,14 @@ Enum(diagnostic_url_rule) String(always) + EnumValue + Enum(diagnostic_url_rule) String(auto) Value(DIAGNOSTICS_URL_AUTO) + ++fdiagnostics-column-unit= ++Common Joined RejectNegative Enum(diagnostics_column_unit) ++-fdiagnostics-column-unit=[display|byte] Select whether column numbers are output as display columns (default) or raw bytes. ++ ++fdiagnostics-column-origin= ++Common Joined RejectNegative UInteger ++-fdiagnostics-column-origin= Set the number of the first column. The default is 1-based as per GNU style, but some utilities may expect 0-based, for example. ++ + fdiagnostics-format= + Common Joined RejectNegative Enum(diagnostics_output_format) + -fdiagnostics-format=[text|json] Select output format. +@@ -1334,6 +1342,15 @@ SourceInclude + diagnostic.h + + Enum ++Name(diagnostics_column_unit) Type(int) ++ ++EnumValue ++Enum(diagnostics_column_unit) String(display) Value(DIAGNOSTICS_COLUMN_UNIT_DISPLAY) ++ ++EnumValue ++Enum(diagnostics_column_unit) String(byte) Value(DIAGNOSTICS_COLUMN_UNIT_BYTE) ++ ++Enum + Name(diagnostics_output_format) Type(int) + + EnumValue +@@ -1362,6 +1379,10 @@ fdiagnostics-path-format= + Common Joined RejectNegative Var(flag_diagnostics_path_format) Enum(diagnostic_path_format) Init(DPF_INLINE_EVENTS) + Specify how to print any control-flow path associated with a diagnostic. + ++ftabstop= ++Common Joined RejectNegative UInteger ++-ftabstop= Distance between tab stops for column reporting. ++ + Enum + Name(diagnostic_path_format) Type(int) + +diff --git a/gcc/diagnostic.c b/gcc/diagnostic.c +--- a/gcc/diagnostic.c 2020-07-22 23:35:17.556386887 -0700 ++++ b/gcc/diagnostic.c 2021-12-25 01:23:41.300841207 -0800 +@@ -38,6 +38,7 @@ along with GCC; see the file COPYING3. + #include "selftest.h" + #include "selftest-diagnostic.h" + #include "opts.h" ++#include "cpplib.h" + + #ifdef HAVE_TERMIOS_H + # include +@@ -219,6 +220,9 @@ diagnostic_initialize (diagnostic_contex + context->min_margin_width = 0; + context->show_ruler_p = false; + context->parseable_fixits_p = false; ++ context->column_unit = DIAGNOSTICS_COLUMN_UNIT_DISPLAY; ++ context->column_origin = 1; ++ context->tabstop = 8; + context->edit_context_ptr = NULL; + context->diagnostic_group_nesting_depth = 0; + context->diagnostic_group_emission_count = 0; +@@ -353,8 +357,51 @@ diagnostic_get_color_for_kind (diagnosti + return diagnostic_kind_color[kind]; + } + ++/* Given an expanded_location, convert the column (which is in 1-based bytes) ++ to the requested units, without converting the origin. ++ Return -1 if the column is invalid (<= 0). */ ++ ++static int ++convert_column_unit (enum diagnostics_column_unit column_unit, ++ int tabstop, ++ expanded_location s) ++{ ++ if (s.column <= 0) ++ return -1; ++ ++ switch (column_unit) ++ { ++ default: ++ gcc_unreachable (); ++ ++ case DIAGNOSTICS_COLUMN_UNIT_DISPLAY: ++ { ++ cpp_char_column_policy policy (tabstop, cpp_wcwidth); ++ return location_compute_display_column (s, policy); ++ } ++ ++ case DIAGNOSTICS_COLUMN_UNIT_BYTE: ++ return s.column; ++ } ++} ++ ++/* Given an expanded_location, convert the column (which is in 1-based bytes) ++ to the requested units and origin. Return -1 if the column is ++ invalid (<= 0). */ ++int ++diagnostic_converted_column (diagnostic_context *context, expanded_location s) ++{ ++ int one_based_col ++ = convert_column_unit (context->column_unit, context->tabstop, s); ++ if (one_based_col <= 0) ++ return -1; ++ return one_based_col + (context->column_origin - 1); ++} ++ + /* Return a formatted line and column ':%line:%column'. Elided if +- zero. The result is a statically allocated buffer. */ ++ line == 0 or col < 0. (A column of 0 may be valid due to the ++ -fdiagnostics-column-origin option.) ++ The result is a statically allocated buffer. */ + + static const char * + maybe_line_and_column (int line, int col) +@@ -363,8 +410,9 @@ maybe_line_and_column (int line, int col + + if (line) + { +- size_t l = snprintf (result, sizeof (result), +- col ? ":%d:%d" : ":%d", line, col); ++ size_t l ++ = snprintf (result, sizeof (result), ++ col >= 0 ? ":%d:%d" : ":%d", line, col); + gcc_checking_assert (l < sizeof (result)); + } + else +@@ -383,8 +431,14 @@ diagnostic_get_location_text (diagnostic + const char *locus_cs = colorize_start (pp_show_color (pp), "locus"); + const char *locus_ce = colorize_stop (pp_show_color (pp)); + const char *file = s.file ? s.file : progname; +- int line = strcmp (file, N_("")) ? s.line : 0; +- int col = context->show_column ? s.column : 0; ++ int line = 0; ++ int col = -1; ++ if (strcmp (file, N_(""))) ++ { ++ line = s.line; ++ if (context->show_column) ++ col = diagnostic_converted_column (context, s); ++ } + + const char *line_col = maybe_line_and_column (line, col); + return build_message_string ("%s%s%s:%s", locus_cs, file, +@@ -650,14 +704,20 @@ diagnostic_report_current_module (diagno + if (! MAIN_FILE_P (map)) + { + bool first = true; ++ expanded_location s = {}; + do + { + where = linemap_included_from (map); + map = linemap_included_from_linemap (line_table, map); +- const char *line_col +- = maybe_line_and_column (SOURCE_LINE (map, where), +- first && context->show_column +- ? SOURCE_COLUMN (map, where) : 0); ++ s.file = LINEMAP_FILE (map); ++ s.line = SOURCE_LINE (map, where); ++ int col = -1; ++ if (first && context->show_column) ++ { ++ s.column = SOURCE_COLUMN (map, where); ++ col = diagnostic_converted_column (context, s); ++ } ++ const char *line_col = maybe_line_and_column (s.line, col); + static const char *const msgs[] = + { + N_("In file included from"), +@@ -666,7 +726,7 @@ diagnostic_report_current_module (diagno + unsigned index = !first; + pp_verbatim (context->printer, "%s%s %r%s%s%R", + first ? "" : ",\n", _(msgs[index]), +- "locus", LINEMAP_FILE (map), line_col); ++ "locus", s.file, line_col); + first = false; + } + while (! MAIN_FILE_P (map)); +@@ -2042,10 +2102,15 @@ test_print_parseable_fixits_replace () + static void + assert_location_text (const char *expected_loc_text, + const char *filename, int line, int column, +- bool show_column) ++ bool show_column, ++ int origin = 1, ++ enum diagnostics_column_unit column_unit ++ = DIAGNOSTICS_COLUMN_UNIT_BYTE) + { + test_diagnostic_context dc; + dc.show_column = show_column; ++ dc.column_unit = column_unit; ++ dc.column_origin = origin; + + expanded_location xloc; + xloc.file = filename; +@@ -2069,7 +2134,10 @@ test_diagnostic_get_location_text () + assert_location_text ("PROGNAME:", NULL, 0, 0, true); + assert_location_text (":", "", 42, 10, true); + assert_location_text ("foo.c:42:10:", "foo.c", 42, 10, true); +- assert_location_text ("foo.c:42:", "foo.c", 42, 0, true); ++ assert_location_text ("foo.c:42:9:", "foo.c", 42, 10, true, 0); ++ assert_location_text ("foo.c:42:1010:", "foo.c", 42, 10, true, 1001); ++ for (int origin = 0; origin != 2; ++origin) ++ assert_location_text ("foo.c:42:", "foo.c", 42, 0, true, origin); + assert_location_text ("foo.c:", "foo.c", 0, 10, true); + assert_location_text ("foo.c:42:", "foo.c", 42, 10, false); + assert_location_text ("foo.c:", "foo.c", 0, 10, false); +@@ -2077,6 +2145,41 @@ test_diagnostic_get_location_text () + maybe_line_and_column (INT_MAX, INT_MAX); + maybe_line_and_column (INT_MIN, INT_MIN); + ++ { ++ /* In order to test display columns vs byte columns, we need to create a ++ file for location_get_source_line() to read. */ ++ ++ const char *const content = "smile \xf0\x9f\x98\x82\n"; ++ const int line_bytes = strlen (content) - 1; ++ const int def_tabstop = 8; ++ const int display_width = cpp_display_width (content, line_bytes, ++ def_tabstop); ++ ASSERT_EQ (line_bytes - 2, display_width); ++ temp_source_file tmp (SELFTEST_LOCATION, ".c", content); ++ const char *const fname = tmp.get_filename (); ++ const int buf_len = strlen (fname) + 16; ++ char *const expected = XNEWVEC (char, buf_len); ++ ++ snprintf (expected, buf_len, "%s:1:%d:", fname, line_bytes); ++ assert_location_text (expected, fname, 1, line_bytes, true, ++ 1, DIAGNOSTICS_COLUMN_UNIT_BYTE); ++ ++ snprintf (expected, buf_len, "%s:1:%d:", fname, line_bytes - 1); ++ assert_location_text (expected, fname, 1, line_bytes, true, ++ 0, DIAGNOSTICS_COLUMN_UNIT_BYTE); ++ ++ snprintf (expected, buf_len, "%s:1:%d:", fname, display_width); ++ assert_location_text (expected, fname, 1, line_bytes, true, ++ 1, DIAGNOSTICS_COLUMN_UNIT_DISPLAY); ++ ++ snprintf (expected, buf_len, "%s:1:%d:", fname, display_width - 1); ++ assert_location_text (expected, fname, 1, line_bytes, true, ++ 0, DIAGNOSTICS_COLUMN_UNIT_DISPLAY); ++ ++ XDELETEVEC (expected); ++ } ++ ++ + progname = old_progname; + } + +diff --git a/gcc/diagnostic-format-json.cc b/gcc/diagnostic-format-json.cc +--- a/gcc/diagnostic-format-json.cc 2020-07-22 23:35:17.556386887 -0700 ++++ b/gcc/diagnostic-format-json.cc 2021-12-25 01:20:53.475636694 -0800 +@@ -23,6 +23,7 @@ along with GCC; see the file COPYING3. + #include "system.h" + #include "coretypes.h" + #include "diagnostic.h" ++#include "selftest-diagnostic.h" + #include "diagnostic-metadata.h" + #include "json.h" + #include "selftest.h" +@@ -43,21 +44,43 @@ static json::array *cur_children_array; + /* Generate a JSON object for LOC. */ + + json::value * +-json_from_expanded_location (location_t loc) ++json_from_expanded_location (diagnostic_context *context, location_t loc) + { + expanded_location exploc = expand_location (loc); + json::object *result = new json::object (); + if (exploc.file) + result->set ("file", new json::string (exploc.file)); + result->set ("line", new json::integer_number (exploc.line)); +- result->set ("column", new json::integer_number (exploc.column)); ++ ++ const enum diagnostics_column_unit orig_unit = context->column_unit; ++ struct ++ { ++ const char *name; ++ enum diagnostics_column_unit unit; ++ } column_fields[] = { ++ {"display-column", DIAGNOSTICS_COLUMN_UNIT_DISPLAY}, ++ {"byte-column", DIAGNOSTICS_COLUMN_UNIT_BYTE} ++ }; ++ int the_column = INT_MIN; ++ for (int i = 0; i != sizeof column_fields / sizeof (*column_fields); ++i) ++ { ++ context->column_unit = column_fields[i].unit; ++ const int col = diagnostic_converted_column (context, exploc); ++ result->set (column_fields[i].name, new json::integer_number (col)); ++ if (column_fields[i].unit == orig_unit) ++ the_column = col; ++ } ++ gcc_assert (the_column != INT_MIN); ++ result->set ("column", new json::integer_number (the_column)); ++ context->column_unit = orig_unit; + return result; + } + + /* Generate a JSON object for LOC_RANGE. */ + + static json::object * +-json_from_location_range (const location_range *loc_range, unsigned range_idx) ++json_from_location_range (diagnostic_context *context, ++ const location_range *loc_range, unsigned range_idx) + { + location_t caret_loc = get_pure_location (loc_range->m_loc); + +@@ -68,13 +91,13 @@ json_from_location_range (const location + location_t finish_loc = get_finish (loc_range->m_loc); + + json::object *result = new json::object (); +- result->set ("caret", json_from_expanded_location (caret_loc)); ++ result->set ("caret", json_from_expanded_location (context, caret_loc)); + if (start_loc != caret_loc + && start_loc != UNKNOWN_LOCATION) +- result->set ("start", json_from_expanded_location (start_loc)); ++ result->set ("start", json_from_expanded_location (context, start_loc)); + if (finish_loc != caret_loc + && finish_loc != UNKNOWN_LOCATION) +- result->set ("finish", json_from_expanded_location (finish_loc)); ++ result->set ("finish", json_from_expanded_location (context, finish_loc)); + + if (loc_range->m_label) + { +@@ -91,14 +114,14 @@ json_from_location_range (const location + /* Generate a JSON object for HINT. */ + + static json::object * +-json_from_fixit_hint (const fixit_hint *hint) ++json_from_fixit_hint (diagnostic_context *context, const fixit_hint *hint) + { + json::object *fixit_obj = new json::object (); + + location_t start_loc = hint->get_start_loc (); +- fixit_obj->set ("start", json_from_expanded_location (start_loc)); ++ fixit_obj->set ("start", json_from_expanded_location (context, start_loc)); + location_t next_loc = hint->get_next_loc (); +- fixit_obj->set ("next", json_from_expanded_location (next_loc)); ++ fixit_obj->set ("next", json_from_expanded_location (context, next_loc)); + fixit_obj->set ("string", new json::string (hint->get_string ())); + + return fixit_obj; +@@ -190,11 +213,13 @@ json_end_diagnostic (diagnostic_context + else + { + /* Otherwise, make diag_obj be the top-level object within the group; +- add a "children" array. */ ++ add a "children" array and record the column origin. */ + toplevel_array->append (diag_obj); + cur_group = diag_obj; + cur_children_array = new json::array (); + diag_obj->set ("children", cur_children_array); ++ diag_obj->set ("column-origin", ++ new json::integer_number (context->column_origin)); + } + + const rich_location *richloc = diagnostic->richloc; +@@ -205,7 +230,7 @@ json_end_diagnostic (diagnostic_context + for (unsigned int i = 0; i < richloc->get_num_locations (); i++) + { + const location_range *loc_range = richloc->get_range (i); +- json::object *loc_obj = json_from_location_range (loc_range, i); ++ json::object *loc_obj = json_from_location_range (context, loc_range, i); + if (loc_obj) + loc_array->append (loc_obj); + } +@@ -217,7 +242,7 @@ json_end_diagnostic (diagnostic_context + for (unsigned int i = 0; i < richloc->get_num_fixit_hints (); i++) + { + const fixit_hint *hint = richloc->get_fixit_hint (i); +- json::object *fixit_obj = json_from_fixit_hint (hint); ++ json::object *fixit_obj = json_from_fixit_hint (context, hint); + fixit_array->append (fixit_obj); + } + } +@@ -320,7 +345,8 @@ namespace selftest { + static void + test_unknown_location () + { +- delete json_from_expanded_location (UNKNOWN_LOCATION); ++ test_diagnostic_context dc; ++ delete json_from_expanded_location (&dc, UNKNOWN_LOCATION); + } + + /* Verify that we gracefully handle attempts to serialize bad +@@ -338,7 +364,8 @@ test_bad_endpoints () + loc_range.m_range_display_kind = SHOW_RANGE_WITH_CARET; + loc_range.m_label = NULL; + +- json::object *obj = json_from_location_range (&loc_range, 0); ++ test_diagnostic_context dc; ++ json::object *obj = json_from_location_range (&dc, &loc_range, 0); + /* We should have a "caret" value, but no "start" or "finish" values. */ + ASSERT_TRUE (obj != NULL); + ASSERT_TRUE (obj->get ("caret") != NULL); +diff --git a/gcc/diagnostic.h b/gcc/diagnostic.h +--- a/gcc/diagnostic.h 2020-07-22 23:35:17.556386887 -0700 ++++ b/gcc/diagnostic.h 2021-12-25 01:20:53.479636627 -0800 +@@ -24,6 +24,20 @@ along with GCC; see the file COPYING3. + #include "pretty-print.h" + #include "diagnostic-core.h" + ++/* An enum for controlling what units to use for the column number ++ when diagnostics are output, used by the -fdiagnostics-column-unit option. ++ Tabs will be expanded or not according to the value of -ftabstop. The origin ++ (default 1) is controlled by -fdiagnostics-column-origin. */ ++ ++enum diagnostics_column_unit ++{ ++ /* The default from GCC 11 onwards: display columns. */ ++ DIAGNOSTICS_COLUMN_UNIT_DISPLAY, ++ ++ /* The behavior in GCC 10 and earlier: simple bytes. */ ++ DIAGNOSTICS_COLUMN_UNIT_BYTE ++}; ++ + /* Enum for overriding the standard output format. */ + + enum diagnostics_output_format +@@ -280,6 +294,15 @@ struct diagnostic_context + rest of the diagnostic. */ + bool parseable_fixits_p; + ++ /* What units to use when outputting the column number. */ ++ enum diagnostics_column_unit column_unit; ++ ++ /* The origin for the column number (1-based or 0-based typically). */ ++ int column_origin; ++ ++ /* The size of the tabstop for tab expansion. */ ++ int tabstop; ++ + /* If non-NULL, an edit_context to which fix-it hints should be + applied, for generating patches. */ + edit_context *edit_context_ptr; +@@ -458,6 +481,8 @@ diagnostic_same_line (const diagnostic_c + } + + extern const char *diagnostic_get_color_for_kind (diagnostic_t kind); ++extern int diagnostic_converted_column (diagnostic_context *context, ++ expanded_location s); + + /* Pure text formatting support functions. */ + extern char *file_name_as_prefix (diagnostic_context *, const char *); +@@ -470,6 +495,7 @@ extern void diagnostic_output_format_ini + /* Compute the number of digits in the decimal representation of an integer. */ + extern int num_digits (int); + +-extern json::value *json_from_expanded_location (location_t loc); ++extern json::value *json_from_expanded_location (diagnostic_context *context, ++ location_t loc); + + #endif /* ! GCC_DIAGNOSTIC_H */ +diff --git a/gcc/diagnostic-show-locus.c b/gcc/diagnostic-show-locus.c +--- a/gcc/diagnostic-show-locus.c 2020-07-22 23:35:17.556386887 -0700 ++++ b/gcc/diagnostic-show-locus.c 2021-12-25 01:20:53.479636627 -0800 +@@ -175,9 +175,10 @@ enum column_unit { + class exploc_with_display_col : public expanded_location + { + public: +- exploc_with_display_col (const expanded_location &exploc) ++ exploc_with_display_col (const expanded_location &exploc, int tabstop) + : expanded_location (exploc), +- m_display_col (location_compute_display_column (exploc)) {} ++ m_display_col (location_compute_display_column (exploc, tabstop)) ++ {} + + int m_display_col; + }; +@@ -189,11 +190,11 @@ class exploc_with_display_col : public e + class layout_point + { + public: +- layout_point (const expanded_location &exploc) ++ layout_point (const exploc_with_display_col &exploc) + : m_line (exploc.line) + { + m_columns[CU_BYTES] = exploc.column; +- m_columns[CU_DISPLAY_COLS] = location_compute_display_column (exploc); ++ m_columns[CU_DISPLAY_COLS] = exploc.m_display_col; + } + + linenum_type m_line; +@@ -205,10 +206,10 @@ class layout_point + class layout_range + { + public: +- layout_range (const expanded_location *start_exploc, +- const expanded_location *finish_exploc, ++ layout_range (const exploc_with_display_col &start_exploc, ++ const exploc_with_display_col &finish_exploc, + enum range_display_kind range_display_kind, +- const expanded_location *caret_exploc, ++ const exploc_with_display_col &caret_exploc, + unsigned original_idx, + const range_label *label); + +@@ -226,22 +227,18 @@ class layout_range + + /* A struct for use by layout::print_source_line for telling + layout::print_annotation_line the extents of the source line that +- it printed, so that underlines can be clipped appropriately. */ ++ it printed, so that underlines can be clipped appropriately. Units ++ are 1-based display columns. */ + + struct line_bounds + { +- int m_first_non_ws; +- int m_last_non_ws; ++ int m_first_non_ws_disp_col; ++ int m_last_non_ws_disp_col; + +- void convert_to_display_cols (char_span line) ++ line_bounds () + { +- m_first_non_ws = cpp_byte_column_to_display_column (line.get_buffer (), +- line.length (), +- m_first_non_ws); +- +- m_last_non_ws = cpp_byte_column_to_display_column (line.get_buffer (), +- line.length (), +- m_last_non_ws); ++ m_first_non_ws_disp_col = INT_MAX; ++ m_last_non_ws_disp_col = 0; + } + }; + +@@ -351,8 +348,8 @@ class layout + private: + bool will_show_line_p (linenum_type row) const; + void print_leading_fixits (linenum_type row); +- void print_source_line (linenum_type row, const char *line, int line_bytes, +- line_bounds *lbounds_out); ++ line_bounds print_source_line (linenum_type row, const char *line, ++ int line_bytes); + bool should_print_annotation_line_p (linenum_type row) const; + void start_annotation_line (char margin_char = ' ') const; + void print_annotation_line (linenum_type row, const line_bounds lbounds); +@@ -513,16 +510,16 @@ colorizer::get_color_by_name (const char + Initialize various layout_point fields from expanded_location + equivalents; we've already filtered on file. */ + +-layout_range::layout_range (const expanded_location *start_exploc, +- const expanded_location *finish_exploc, ++layout_range::layout_range (const exploc_with_display_col &start_exploc, ++ const exploc_with_display_col &finish_exploc, + enum range_display_kind range_display_kind, +- const expanded_location *caret_exploc, ++ const exploc_with_display_col &caret_exploc, + unsigned original_idx, + const range_label *label) +-: m_start (*start_exploc), +- m_finish (*finish_exploc), ++: m_start (start_exploc), ++ m_finish (finish_exploc), + m_range_display_kind (range_display_kind), +- m_caret (*caret_exploc), ++ m_caret (caret_exploc), + m_original_idx (original_idx), + m_label (label) + { +@@ -646,6 +643,9 @@ layout_range::intersects_line_p (linenum + + #if CHECKING_P + ++/* Default for when we don't care what the tab expansion is set to. */ ++static const int def_tabstop = 8; ++ + /* Create some expanded locations for testing layout_range. The filename + member of the explocs is set to the empty string. This member will only be + inspected by the calls to location_compute_display_column() made from the +@@ -662,8 +662,11 @@ make_range (int start_line, int start_co + = {"", start_line, start_col, NULL, false}; + const expanded_location finish_exploc + = {"", end_line, end_col, NULL, false}; +- return layout_range (&start_exploc, &finish_exploc, SHOW_RANGE_WITHOUT_CARET, +- &start_exploc, 0, NULL); ++ return layout_range (exploc_with_display_col (start_exploc, def_tabstop), ++ exploc_with_display_col (finish_exploc, def_tabstop), ++ SHOW_RANGE_WITHOUT_CARET, ++ exploc_with_display_col (start_exploc, def_tabstop), ++ 0, NULL); + } + + /* Selftests for layout_range::contains_point and +@@ -964,7 +967,7 @@ layout::layout (diagnostic_context * con + : m_context (context), + m_pp (context->printer), + m_primary_loc (richloc->get_range (0)->m_loc), +- m_exploc (richloc->get_expanded_location (0)), ++ m_exploc (richloc->get_expanded_location (0), context->tabstop), + m_colorizer (context, diagnostic_kind), + m_colorize_source_p (context->colorize_source_p), + m_show_labels_p (context->show_labels_p), +@@ -1060,7 +1063,10 @@ layout::maybe_add_location_range (const + + /* Everything is now known to be in the correct source file, + but it may require further sanitization. */ +- layout_range ri (&start, &finish, loc_range->m_range_display_kind, &caret, ++ layout_range ri (exploc_with_display_col (start, m_context->tabstop), ++ exploc_with_display_col (finish, m_context->tabstop), ++ loc_range->m_range_display_kind, ++ exploc_with_display_col (caret, m_context->tabstop), + original_idx, loc_range->m_label); + + /* If we have a range that finishes before it starts (perhaps +@@ -1394,7 +1400,7 @@ layout::calculate_x_offset_display () + = get_line_bytes_without_trailing_whitespace (line.get_buffer (), + line.length ()); + int eol_display_column +- = cpp_display_width (line.get_buffer (), line_bytes); ++ = cpp_display_width (line.get_buffer (), line_bytes, m_context->tabstop); + if (caret_display_column > eol_display_column + || !caret_display_column) + { +@@ -1445,16 +1451,13 @@ layout::calculate_x_offset_display () + } + + /* Print line ROW of source code, potentially colorized at any ranges, and +- populate *LBOUNDS_OUT. +- LINE is the source line (not necessarily 0-terminated) and LINE_BYTES +- is its length in bytes. +- This function deals only with byte offsets, not display columns, so +- m_x_offset_display must be converted from display to byte units. In +- particular, LINE_BYTES and LBOUNDS_OUT are in bytes. */ ++ return the line bounds. LINE is the source line (not necessarily ++ 0-terminated) and LINE_BYTES is its length in bytes. In order to handle both ++ colorization and tab expansion, this function tracks the line position in ++ both byte and display column units. */ + +-void +-layout::print_source_line (linenum_type row, const char *line, int line_bytes, +- line_bounds *lbounds_out) ++line_bounds ++layout::print_source_line (linenum_type row, const char *line, int line_bytes) + { + m_colorizer.set_normal_text (); + +@@ -1469,30 +1472,29 @@ layout::print_source_line (linenum_type + else + pp_space (m_pp); + +- /* We will stop printing the source line at any trailing whitespace, and start +- printing it as per m_x_offset_display. */ ++ /* We will stop printing the source line at any trailing whitespace. */ + line_bytes = get_line_bytes_without_trailing_whitespace (line, + line_bytes); +- int x_offset_bytes = 0; +- if (m_x_offset_display) +- { +- x_offset_bytes = cpp_display_column_to_byte_column (line, line_bytes, +- m_x_offset_display); +- /* In case the leading portion of the line that will be skipped over ends +- with a character with wcwidth > 1, then it is possible we skipped too +- much, so account for that by padding with spaces. */ +- const int overage +- = cpp_byte_column_to_display_column (line, line_bytes, x_offset_bytes) +- - m_x_offset_display; +- for (int column = 0; column < overage; ++column) +- pp_space (m_pp); +- line += x_offset_bytes; +- } + +- /* Print the line. */ +- int first_non_ws = INT_MAX; +- int last_non_ws = 0; +- for (int col_byte = 1 + x_offset_bytes; col_byte <= line_bytes; col_byte++) ++ /* This object helps to keep track of which display column we are at, which is ++ necessary for computing the line bounds in display units, for doing ++ tab expansion, and for implementing m_x_offset_display. */ ++ cpp_display_width_computation dw (line, line_bytes, m_context->tabstop); ++ ++ /* Skip the first m_x_offset_display display columns. In case the leading ++ portion that will be skipped ends with a character with wcwidth > 1, then ++ it is possible we skipped too much, so account for that by padding with ++ spaces. Note that this does the right thing too in case a tab was the last ++ character to be skipped over; the tab is effectively replaced by the ++ correct number of trailing spaces needed to offset by the desired number of ++ display columns. */ ++ for (int skipped_display_cols = dw.advance_display_cols (m_x_offset_display); ++ skipped_display_cols > m_x_offset_display; --skipped_display_cols) ++ pp_space (m_pp); ++ ++ /* Print the line and compute the line_bounds. */ ++ line_bounds lbounds; ++ while (!dw.done ()) + { + /* Assuming colorization is enabled for the caret and underline + characters, we may also colorize the associated characters +@@ -1510,7 +1512,8 @@ layout::print_source_line (linenum_type + { + bool in_range_p; + point_state state; +- in_range_p = get_state_at_point (row, col_byte, ++ const int start_byte_col = dw.bytes_processed () + 1; ++ in_range_p = get_state_at_point (row, start_byte_col, + 0, INT_MAX, + CU_BYTES, + &state); +@@ -1519,22 +1522,44 @@ layout::print_source_line (linenum_type + else + m_colorizer.set_normal_text (); + } +- char c = *line; +- if (c == '\0' || c == '\t' || c == '\r') +- c = ' '; +- if (c != ' ') ++ ++ /* Get the display width of the next character to be output, expanding ++ tabs and replacing some control bytes with spaces as necessary. */ ++ const char *c = dw.next_byte (); ++ const int start_disp_col = dw.display_cols_processed () + 1; ++ const int this_display_width = dw.process_next_codepoint (); ++ if (*c == '\t') ++ { ++ /* The returned display width is the number of spaces into which the ++ tab should be expanded. */ ++ for (int i = 0; i != this_display_width; ++i) ++ pp_space (m_pp); ++ continue; ++ } ++ if (*c == '\0' || *c == '\r') + { +- last_non_ws = col_byte; +- if (first_non_ws == INT_MAX) +- first_non_ws = col_byte; ++ /* cpp_wcwidth() promises to return 1 for all control bytes, and we ++ want to output these as a single space too, so this case is ++ actually the same as the '\t' case. */ ++ gcc_assert (this_display_width == 1); ++ pp_space (m_pp); ++ continue; + } +- pp_character (m_pp, c); +- line++; ++ ++ /* We have a (possibly multibyte) character to output; update the line ++ bounds if it is not whitespace. */ ++ if (*c != ' ') ++ { ++ lbounds.m_last_non_ws_disp_col = dw.display_cols_processed (); ++ if (lbounds.m_first_non_ws_disp_col == INT_MAX) ++ lbounds.m_first_non_ws_disp_col = start_disp_col; ++ } ++ ++ /* Output the character. */ ++ while (c != dw.next_byte ()) pp_character (m_pp, *c++); + } + print_newline (); +- +- lbounds_out->m_first_non_ws = first_non_ws; +- lbounds_out->m_last_non_ws = last_non_ws; ++ return lbounds; + } + + /* Determine if we should print an annotation line for ROW. +@@ -1576,14 +1601,13 @@ layout::start_annotation_line (char marg + } + + /* Print a line consisting of the caret/underlines for the given +- source line. This function works with display columns, rather than byte +- counts; in particular, LBOUNDS should be in display column units. */ ++ source line. */ + + void + layout::print_annotation_line (linenum_type row, const line_bounds lbounds) + { + int x_bound = get_x_bound_for_row (row, m_exploc.m_display_col, +- lbounds.m_last_non_ws); ++ lbounds.m_last_non_ws_disp_col); + + start_annotation_line (); + pp_space (m_pp); +@@ -1593,8 +1617,8 @@ layout::print_annotation_line (linenum_t + bool in_range_p; + point_state state; + in_range_p = get_state_at_point (row, column, +- lbounds.m_first_non_ws, +- lbounds.m_last_non_ws, ++ lbounds.m_first_non_ws_disp_col, ++ lbounds.m_last_non_ws_disp_col, + CU_DISPLAY_COLS, + &state); + if (in_range_p) +@@ -1631,12 +1655,14 @@ layout::print_annotation_line (linenum_t + class line_label + { + public: +- line_label (int state_idx, int column, label_text text) ++ line_label (diagnostic_context *context, int state_idx, int column, ++ label_text text) + : m_state_idx (state_idx), m_column (column), + m_text (text), m_label_line (0), m_has_vbar (true) + { + const int bytes = strlen (text.m_buffer); +- m_display_width = cpp_display_width (text.m_buffer, bytes); ++ m_display_width ++ = cpp_display_width (text.m_buffer, bytes, context->tabstop); + } + + /* Sorting is primarily by column, then by state index. */ +@@ -1696,7 +1722,7 @@ layout::print_any_labels (linenum_type r + if (text.m_buffer == NULL) + continue; + +- labels.safe_push (line_label (i, disp_col, text)); ++ labels.safe_push (line_label (m_context, i, disp_col, text)); + } + } + +@@ -1976,7 +2002,8 @@ public: + + /* Get the range of bytes or display columns that HINT would affect. */ + static column_range +-get_affected_range (const fixit_hint *hint, enum column_unit col_unit) ++get_affected_range (diagnostic_context *context, ++ const fixit_hint *hint, enum column_unit col_unit) + { + expanded_location exploc_start = expand_location (hint->get_start_loc ()); + expanded_location exploc_finish = expand_location (hint->get_next_loc ()); +@@ -1986,11 +2013,13 @@ get_affected_range (const fixit_hint *hi + int finish_column; + if (col_unit == CU_DISPLAY_COLS) + { +- start_column = location_compute_display_column (exploc_start); ++ start_column ++ = location_compute_display_column (exploc_start, context->tabstop); + if (hint->insertion_p ()) + finish_column = start_column - 1; + else +- finish_column = location_compute_display_column (exploc_finish); ++ finish_column ++ = location_compute_display_column (exploc_finish, context->tabstop); + } + else + { +@@ -2003,12 +2032,12 @@ get_affected_range (const fixit_hint *hi + /* Get the range of display columns that would be printed for HINT. */ + + static column_range +-get_printed_columns (const fixit_hint *hint) ++get_printed_columns (diagnostic_context *context, const fixit_hint *hint) + { + expanded_location exploc = expand_location (hint->get_start_loc ()); +- int start_column = location_compute_display_column (exploc); +- int hint_width = cpp_display_width (hint->get_string (), +- hint->get_length ()); ++ int start_column = location_compute_display_column (exploc, context->tabstop); ++ int hint_width = cpp_display_width (hint->get_string (), hint->get_length (), ++ context->tabstop); + int final_hint_column = start_column + hint_width - 1; + if (hint->insertion_p ()) + { +@@ -2018,7 +2047,8 @@ get_printed_columns (const fixit_hint *h + { + exploc = expand_location (hint->get_next_loc ()); + --exploc.column; +- int finish_column = location_compute_display_column (exploc); ++ int finish_column ++ = location_compute_display_column (exploc, context->tabstop); + return column_range (start_column, + MAX (finish_column, final_hint_column)); + } +@@ -2035,12 +2065,14 @@ public: + correction (column_range affected_bytes, + column_range affected_columns, + column_range printed_columns, +- const char *new_text, size_t new_text_len) ++ const char *new_text, size_t new_text_len, ++ int tabstop) + : m_affected_bytes (affected_bytes), + m_affected_columns (affected_columns), + m_printed_columns (printed_columns), + m_text (xstrdup (new_text)), + m_byte_length (new_text_len), ++ m_tabstop (tabstop), + m_alloc_sz (new_text_len + 1) + { + compute_display_cols (); +@@ -2058,7 +2090,7 @@ public: + + void compute_display_cols () + { +- m_display_cols = cpp_display_width (m_text, m_byte_length); ++ m_display_cols = cpp_display_width (m_text, m_byte_length, m_tabstop); + } + + void overwrite (int dst_offset, const char_span &src_span) +@@ -2086,6 +2118,7 @@ public: + char *m_text; + size_t m_byte_length; /* Not including null-terminator. */ + int m_display_cols; ++ int m_tabstop; + size_t m_alloc_sz; + }; + +@@ -2121,13 +2154,15 @@ correction::ensure_terminated () + class line_corrections + { + public: +- line_corrections (const char *filename, linenum_type row) +- : m_filename (filename), m_row (row) ++ line_corrections (diagnostic_context *context, const char *filename, ++ linenum_type row) ++ : m_context (context), m_filename (filename), m_row (row) + {} + ~line_corrections (); + + void add_hint (const fixit_hint *hint); + ++ diagnostic_context *m_context; + const char *m_filename; + linenum_type m_row; + auto_vec m_corrections; +@@ -2173,9 +2208,10 @@ source_line::source_line (const char *fi + void + line_corrections::add_hint (const fixit_hint *hint) + { +- column_range affected_bytes = get_affected_range (hint, CU_BYTES); +- column_range affected_columns = get_affected_range (hint, CU_DISPLAY_COLS); +- column_range printed_columns = get_printed_columns (hint); ++ column_range affected_bytes = get_affected_range (m_context, hint, CU_BYTES); ++ column_range affected_columns = get_affected_range (m_context, hint, ++ CU_DISPLAY_COLS); ++ column_range printed_columns = get_printed_columns (m_context, hint); + + /* Potentially consolidate. */ + if (!m_corrections.is_empty ()) +@@ -2243,7 +2279,8 @@ line_corrections::add_hint (const fixit_ + affected_columns, + printed_columns, + hint->get_string (), +- hint->get_length ())); ++ hint->get_length (), ++ m_context->tabstop)); + } + + /* If there are any fixit hints on source line ROW, print them. +@@ -2257,7 +2294,7 @@ layout::print_trailing_fixits (linenum_t + { + /* Build a list of correction instances for the line, + potentially consolidating hints (for the sake of readability). */ +- line_corrections corrections (m_exploc.file, row); ++ line_corrections corrections (m_context, m_exploc.file, row); + for (unsigned int i = 0; i < m_fixit_hints.length (); i++) + { + const fixit_hint *hint = m_fixit_hints[i]; +@@ -2499,15 +2536,11 @@ layout::print_line (linenum_type row) + if (!line) + return; + +- line_bounds lbounds; + print_leading_fixits (row); +- print_source_line (row, line.get_buffer (), line.length (), &lbounds); ++ const line_bounds lbounds ++ = print_source_line (row, line.get_buffer (), line.length ()); + if (should_print_annotation_line_p (row)) +- { +- if (lbounds.m_first_non_ws != INT_MAX) +- lbounds.convert_to_display_cols (line); +- print_annotation_line (row, lbounds); +- } ++ print_annotation_line (row, lbounds); + if (m_show_labels_p) + print_any_labels (row); + print_trailing_fixits (row); +@@ -2670,9 +2703,11 @@ test_layout_x_offset_display_utf8 (const + + char_span lspan = location_get_source_line (tmp.get_filename (), 1); + ASSERT_EQ (line_display_cols, +- cpp_display_width (lspan.get_buffer (), lspan.length ())); ++ cpp_display_width (lspan.get_buffer (), lspan.length (), ++ def_tabstop)); + ASSERT_EQ (line_display_cols, +- location_compute_display_column (expand_location (line_end))); ++ location_compute_display_column (expand_location (line_end), ++ def_tabstop)); + ASSERT_EQ (0, memcmp (lspan.get_buffer () + (emoji_col - 1), + "\xf0\x9f\x98\x82\xf0\x9f\x98\x82", 8)); + +@@ -2774,6 +2809,111 @@ test_layout_x_offset_display_utf8 (const + + } + ++static void ++test_layout_x_offset_display_tab (const line_table_case &case_) ++{ ++ const char *content ++ = "This line is very long, so that we can use it to test the logic for " ++ "clipping long lines. Also this: `\t' is a tab that occupies 1 byte and " ++ "a variable number of display columns, starting at column #103.\n"; ++ ++ /* Number of bytes in the line, subtracting one to remove the newline. */ ++ const int line_bytes = strlen (content) - 1; ++ ++ /* The column where the tab begins. Byte or display is the same as there are ++ no multibyte characters earlier on the line. */ ++ const int tab_col = 103; ++ ++ /* Effective extra size of the tab beyond what a single space would have taken ++ up, indexed by tabstop. */ ++ static const int num_tabstops = 11; ++ int extra_width[num_tabstops]; ++ for (int tabstop = 1; tabstop != num_tabstops; ++tabstop) ++ { ++ const int this_tab_size = tabstop - (tab_col - 1) % tabstop; ++ extra_width[tabstop] = this_tab_size - 1; ++ } ++ /* Example of this calculation: if tabstop is 10, the tab starting at column ++ #103 has to expand into 8 spaces, covering columns 103-110, so that the ++ next character is at column #111. So it takes up 7 more columns than ++ a space would have taken up. */ ++ ASSERT_EQ (7, extra_width[10]); ++ ++ temp_source_file tmp (SELFTEST_LOCATION, ".c", content); ++ line_table_test ltt (case_); ++ ++ linemap_add (line_table, LC_ENTER, false, tmp.get_filename (), 1); ++ ++ location_t line_end = linemap_position_for_column (line_table, line_bytes); ++ ++ /* Don't attempt to run the tests if column data might be unavailable. */ ++ if (line_end > LINE_MAP_MAX_LOCATION_WITH_COLS) ++ return; ++ ++ /* Check that cpp_display_width handles the tabs as expected. */ ++ char_span lspan = location_get_source_line (tmp.get_filename (), 1); ++ ASSERT_EQ ('\t', *(lspan.get_buffer () + (tab_col - 1))); ++ for (int tabstop = 1; tabstop != num_tabstops; ++tabstop) ++ { ++ ASSERT_EQ (line_bytes + extra_width[tabstop], ++ cpp_display_width (lspan.get_buffer (), lspan.length (), ++ tabstop)); ++ ASSERT_EQ (line_bytes + extra_width[tabstop], ++ location_compute_display_column (expand_location (line_end), ++ tabstop)); ++ } ++ ++ /* Check that the tab is expanded to the expected number of spaces. */ ++ rich_location richloc (line_table, ++ linemap_position_for_column (line_table, ++ tab_col + 1)); ++ for (int tabstop = 1; tabstop != num_tabstops; ++tabstop) ++ { ++ test_diagnostic_context dc; ++ dc.tabstop = tabstop; ++ layout test_layout (&dc, &richloc, DK_ERROR); ++ test_layout.print_line (1); ++ const char *out = pp_formatted_text (dc.printer); ++ ASSERT_EQ (NULL, strchr (out, '\t')); ++ const char *left_quote = strchr (out, '`'); ++ const char *right_quote = strchr (out, '\''); ++ ASSERT_NE (NULL, left_quote); ++ ASSERT_NE (NULL, right_quote); ++ ASSERT_EQ (right_quote - left_quote, extra_width[tabstop] + 2); ++ } ++ ++ /* Check that the line is offset properly and that the tab is broken up ++ into the expected number of spaces when it is the last character skipped ++ over. */ ++ for (int tabstop = 1; tabstop != num_tabstops; ++tabstop) ++ { ++ test_diagnostic_context dc; ++ dc.tabstop = tabstop; ++ static const int small_width = 24; ++ dc.caret_max_width = small_width - 4; ++ dc.min_margin_width = test_left_margin - test_linenum_sep + 1; ++ dc.show_line_numbers_p = true; ++ layout test_layout (&dc, &richloc, DK_ERROR); ++ test_layout.print_line (1); ++ ++ /* We have arranged things so that two columns will be printed before ++ the caret. If the tab results in more than one space, this should ++ produce two spaces in the output; otherwise, it will be a single space ++ preceded by the opening quote before the tab character. */ ++ const char *output1 ++ = " 1 | ' is a tab that occupies 1 byte and a variable number of " ++ "display columns, starting at column #103.\n" ++ " | ^\n\n"; ++ const char *output2 ++ = " 1 | ` ' is a tab that occupies 1 byte and a variable number of " ++ "display columns, starting at column #103.\n" ++ " | ^\n\n"; ++ const char *expected_output = (extra_width[tabstop] ? output1 : output2); ++ ASSERT_STREQ (expected_output, pp_formatted_text (dc.printer)); ++ } ++} ++ ++ + /* Verify that diagnostic_show_locus works sanely on UNKNOWN_LOCATION. */ + + static void +@@ -3854,6 +3994,27 @@ test_one_liner_labels_utf8 () + } + } + ++/* Make sure that colorization codes don't interrupt a multibyte ++ sequence, which would corrupt it. */ ++static void ++test_one_liner_colorized_utf8 () ++{ ++ test_diagnostic_context dc; ++ dc.colorize_source_p = true; ++ diagnostic_color_init (&dc, DIAGNOSTICS_COLOR_YES); ++ const location_t pi = linemap_position_for_column (line_table, 12); ++ rich_location richloc (line_table, pi); ++ diagnostic_show_locus (&dc, &richloc, DK_ERROR); ++ ++ /* In order to avoid having the test depend on exactly how the colorization ++ was effected, just confirm there are two pi characters in the output. */ ++ const char *result = pp_formatted_text (dc.printer); ++ const char *null_term = result + strlen (result); ++ const char *first_pi = strstr (result, "\xcf\x80"); ++ ASSERT_TRUE (first_pi && first_pi <= null_term - 2); ++ ASSERT_STR_CONTAINS (first_pi + 2, "\xcf\x80"); ++} ++ + /* Run the various one-liner tests. */ + + static void +@@ -3884,8 +4045,10 @@ test_diagnostic_show_locus_one_liner_utf + ASSERT_EQ (31, LOCATION_COLUMN (line_end)); + + char_span lspan = location_get_source_line (tmp.get_filename (), 1); +- ASSERT_EQ (25, cpp_display_width (lspan.get_buffer (), lspan.length ())); +- ASSERT_EQ (25, location_compute_display_column (expand_location (line_end))); ++ ASSERT_EQ (25, cpp_display_width (lspan.get_buffer (), lspan.length (), ++ def_tabstop)); ++ ASSERT_EQ (25, location_compute_display_column (expand_location (line_end), ++ def_tabstop)); + + test_one_liner_simple_caret_utf8 (); + test_one_liner_caret_and_range_utf8 (); +@@ -3900,6 +4063,7 @@ test_diagnostic_show_locus_one_liner_utf + test_one_liner_many_fixits_1_utf8 (); + test_one_liner_many_fixits_2_utf8 (); + test_one_liner_labels_utf8 (); ++ test_one_liner_colorized_utf8 (); + } + + /* Verify that gcc_rich_location::add_location_if_nearby works. */ +@@ -4272,25 +4436,28 @@ test_overlapped_fixit_printing (const li + /* Unit-test the line_corrections machinery. */ + ASSERT_EQ (3, richloc.get_num_fixit_hints ()); + const fixit_hint *hint_0 = richloc.get_fixit_hint (0); +- ASSERT_EQ (column_range (12, 12), get_affected_range (hint_0, CU_BYTES)); + ASSERT_EQ (column_range (12, 12), +- get_affected_range (hint_0, CU_DISPLAY_COLS)); +- ASSERT_EQ (column_range (12, 22), get_printed_columns (hint_0)); ++ get_affected_range (&dc, hint_0, CU_BYTES)); ++ ASSERT_EQ (column_range (12, 12), ++ get_affected_range (&dc, hint_0, CU_DISPLAY_COLS)); ++ ASSERT_EQ (column_range (12, 22), get_printed_columns (&dc, hint_0)); + const fixit_hint *hint_1 = richloc.get_fixit_hint (1); +- ASSERT_EQ (column_range (18, 18), get_affected_range (hint_1, CU_BYTES)); + ASSERT_EQ (column_range (18, 18), +- get_affected_range (hint_1, CU_DISPLAY_COLS)); +- ASSERT_EQ (column_range (18, 20), get_printed_columns (hint_1)); ++ get_affected_range (&dc, hint_1, CU_BYTES)); ++ ASSERT_EQ (column_range (18, 18), ++ get_affected_range (&dc, hint_1, CU_DISPLAY_COLS)); ++ ASSERT_EQ (column_range (18, 20), get_printed_columns (&dc, hint_1)); + const fixit_hint *hint_2 = richloc.get_fixit_hint (2); +- ASSERT_EQ (column_range (29, 28), get_affected_range (hint_2, CU_BYTES)); + ASSERT_EQ (column_range (29, 28), +- get_affected_range (hint_2, CU_DISPLAY_COLS)); +- ASSERT_EQ (column_range (29, 29), get_printed_columns (hint_2)); ++ get_affected_range (&dc, hint_2, CU_BYTES)); ++ ASSERT_EQ (column_range (29, 28), ++ get_affected_range (&dc, hint_2, CU_DISPLAY_COLS)); ++ ASSERT_EQ (column_range (29, 29), get_printed_columns (&dc, hint_2)); + + /* Add each hint in turn to a line_corrections instance, + and verify that they are consolidated into one correction instance + as expected. */ +- line_corrections lc (tmp.get_filename (), 1); ++ line_corrections lc (&dc, tmp.get_filename (), 1); + + /* The first replace hint by itself. */ + lc.add_hint (hint_0); +@@ -4484,25 +4651,28 @@ test_overlapped_fixit_printing_utf8 (con + /* Unit-test the line_corrections machinery. */ + ASSERT_EQ (3, richloc.get_num_fixit_hints ()); + const fixit_hint *hint_0 = richloc.get_fixit_hint (0); +- ASSERT_EQ (column_range (14, 14), get_affected_range (hint_0, CU_BYTES)); ++ ASSERT_EQ (column_range (14, 14), ++ get_affected_range (&dc, hint_0, CU_BYTES)); + ASSERT_EQ (column_range (12, 12), +- get_affected_range (hint_0, CU_DISPLAY_COLS)); +- ASSERT_EQ (column_range (12, 22), get_printed_columns (hint_0)); ++ get_affected_range (&dc, hint_0, CU_DISPLAY_COLS)); ++ ASSERT_EQ (column_range (12, 22), get_printed_columns (&dc, hint_0)); + const fixit_hint *hint_1 = richloc.get_fixit_hint (1); +- ASSERT_EQ (column_range (22, 22), get_affected_range (hint_1, CU_BYTES)); ++ ASSERT_EQ (column_range (22, 22), ++ get_affected_range (&dc, hint_1, CU_BYTES)); + ASSERT_EQ (column_range (18, 18), +- get_affected_range (hint_1, CU_DISPLAY_COLS)); +- ASSERT_EQ (column_range (18, 20), get_printed_columns (hint_1)); ++ get_affected_range (&dc, hint_1, CU_DISPLAY_COLS)); ++ ASSERT_EQ (column_range (18, 20), get_printed_columns (&dc, hint_1)); + const fixit_hint *hint_2 = richloc.get_fixit_hint (2); +- ASSERT_EQ (column_range (35, 34), get_affected_range (hint_2, CU_BYTES)); ++ ASSERT_EQ (column_range (35, 34), ++ get_affected_range (&dc, hint_2, CU_BYTES)); + ASSERT_EQ (column_range (30, 29), +- get_affected_range (hint_2, CU_DISPLAY_COLS)); +- ASSERT_EQ (column_range (30, 30), get_printed_columns (hint_2)); ++ get_affected_range (&dc, hint_2, CU_DISPLAY_COLS)); ++ ASSERT_EQ (column_range (30, 30), get_printed_columns (&dc, hint_2)); + + /* Add each hint in turn to a line_corrections instance, + and verify that they are consolidated into one correction instance + as expected. */ +- line_corrections lc (tmp.get_filename (), 1); ++ line_corrections lc (&dc, tmp.get_filename (), 1); + + /* The first replace hint by itself. */ + lc.add_hint (hint_0); +@@ -4689,6 +4859,8 @@ test_overlapped_fixit_printing_2 (const + + /* Two insertions, in the wrong order. */ + { ++ test_diagnostic_context dc; ++ + rich_location richloc (line_table, col_20); + richloc.add_fixit_insert_before (col_23, "{"); + richloc.add_fixit_insert_before (col_21, "}"); +@@ -4696,14 +4868,15 @@ test_overlapped_fixit_printing_2 (const + /* These fixits should be accepted; they can't be consolidated. */ + ASSERT_EQ (2, richloc.get_num_fixit_hints ()); + const fixit_hint *hint_0 = richloc.get_fixit_hint (0); +- ASSERT_EQ (column_range (23, 22), get_affected_range (hint_0, CU_BYTES)); +- ASSERT_EQ (column_range (23, 23), get_printed_columns (hint_0)); ++ ASSERT_EQ (column_range (23, 22), ++ get_affected_range (&dc, hint_0, CU_BYTES)); ++ ASSERT_EQ (column_range (23, 23), get_printed_columns (&dc, hint_0)); + const fixit_hint *hint_1 = richloc.get_fixit_hint (1); +- ASSERT_EQ (column_range (21, 20), get_affected_range (hint_1, CU_BYTES)); +- ASSERT_EQ (column_range (21, 21), get_printed_columns (hint_1)); ++ ASSERT_EQ (column_range (21, 20), ++ get_affected_range (&dc, hint_1, CU_BYTES)); ++ ASSERT_EQ (column_range (21, 21), get_printed_columns (&dc, hint_1)); + + /* Verify that they're printed correctly. */ +- test_diagnostic_context dc; + diagnostic_show_locus (&dc, &richloc, DK_ERROR); + ASSERT_STREQ (" int a5[][0][0] = { 1, 2 };\n" + " ^\n" +@@ -4955,6 +5128,65 @@ test_fixit_deletion_affecting_newline (c + pp_formatted_text (dc.printer)); + } + ++static void ++test_tab_expansion (const line_table_case &case_) ++{ ++ /* Create a tempfile and write some text to it. This example uses a tabstop ++ of 8, as the column numbers attempt to indicate: ++ ++ .....................000.01111111111.22222333333 display ++ .....................123.90123456789.56789012345 columns */ ++ const char *content = " \t This: `\t' is a tab.\n"; ++ /* ....................000 00000011111 11111222222 byte ++ ....................123 45678901234 56789012345 columns */ ++ ++ const int tabstop = 8; ++ const int first_non_ws_byte_col = 7; ++ const int right_quote_byte_col = 15; ++ const int last_byte_col = 25; ++ ASSERT_EQ (35, cpp_display_width (content, last_byte_col, tabstop)); ++ ++ temp_source_file tmp (SELFTEST_LOCATION, ".c", content); ++ line_table_test ltt (case_); ++ linemap_add (line_table, LC_ENTER, false, tmp.get_filename (), 1); ++ ++ /* Don't attempt to run the tests if column data might be unavailable. */ ++ location_t line_end = linemap_position_for_column (line_table, last_byte_col); ++ if (line_end > LINE_MAP_MAX_LOCATION_WITH_COLS) ++ return; ++ ++ /* Check that the leading whitespace with mixed tabs and spaces is expanded ++ into 11 spaces. Recall that print_line() also puts one space before ++ everything too. */ ++ { ++ test_diagnostic_context dc; ++ dc.tabstop = tabstop; ++ rich_location richloc (line_table, ++ linemap_position_for_column (line_table, ++ first_non_ws_byte_col)); ++ layout test_layout (&dc, &richloc, DK_ERROR); ++ test_layout.print_line (1); ++ ASSERT_STREQ (" This: ` ' is a tab.\n" ++ " ^\n", ++ pp_formatted_text (dc.printer)); ++ } ++ ++ /* Confirm the display width was tracked correctly across the internal tab ++ as well. */ ++ { ++ test_diagnostic_context dc; ++ dc.tabstop = tabstop; ++ rich_location richloc (line_table, ++ linemap_position_for_column (line_table, ++ right_quote_byte_col)); ++ layout test_layout (&dc, &richloc, DK_ERROR); ++ test_layout.print_line (1); ++ ASSERT_STREQ (" This: ` ' is a tab.\n" ++ " ^\n", ++ pp_formatted_text (dc.printer)); ++ } ++} ++ + /* Verify that line numbers are correctly printed for the case of + a multiline range in which the width of the line numbers changes + (e.g. from "9" to "10"). */ +@@ -5012,6 +5244,7 @@ diagnostic_show_locus_c_tests () + test_layout_range_for_multiple_lines (); + + for_each_line_table_case (test_layout_x_offset_display_utf8); ++ for_each_line_table_case (test_layout_x_offset_display_tab); + + test_get_line_bytes_without_trailing_whitespace (); + +@@ -5029,6 +5262,7 @@ diagnostic_show_locus_c_tests () + for_each_line_table_case (test_fixit_insert_containing_newline_2); + for_each_line_table_case (test_fixit_replace_containing_newline); + for_each_line_table_case (test_fixit_deletion_affecting_newline); ++ for_each_line_table_case (test_tab_expansion); + + test_line_numbers_multiline_range (); + } +diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi +--- a/gcc/doc/invoke.texi 2021-12-24 20:23:46.876739587 -0800 ++++ b/gcc/doc/invoke.texi 2021-12-25 01:20:53.487636494 -0800 +@@ -293,7 +293,9 @@ Objective-C and Objective-C++ Dialects}. + -fdiagnostics-show-template-tree -fno-elide-type @gol + -fdiagnostics-path-format=@r{[}none@r{|}separate-events@r{|}inline-events@r{]} @gol + -fdiagnostics-show-path-depths @gol +--fno-show-column} ++-fno-show-column @gol ++-fdiagnostics-column-unit=@r{[}display@r{|}byte@r{]} @gol ++-fdiagnostics-column-origin=@var{origin}} + + @item Warning Options + @xref{Warning Options,,Options to Request or Suppress Warnings}. +@@ -4424,6 +4426,31 @@ Do not print column numbers in diagnosti + diagnostics are being scanned by a program that does not understand the + column numbers, such as @command{dejagnu}. + ++@item -fdiagnostics-column-unit=@var{UNIT} ++@opindex fdiagnostics-column-unit ++Select the units for the column number. This affects traditional diagnostics ++(in the absence of @option{-fno-show-column}), as well as JSON format ++diagnostics if requested. ++ ++The default @var{UNIT}, @samp{display}, considers the number of display ++columns occupied by each character. This may be larger than the number ++of bytes required to encode the character, in the case of tab ++characters, or it may be smaller, in the case of multibyte characters. ++For example, the character ``GREEK SMALL LETTER PI (U+03C0)'' occupies one ++display column, and its UTF-8 encoding requires two bytes; the character ++``SLIGHTLY SMILING FACE (U+1F642)'' occupies two display columns, and ++its UTF-8 encoding requires four bytes. ++ ++Setting @var{UNIT} to @samp{byte} changes the column number to the raw byte ++count in all cases, as was traditionally output by GCC prior to version 11.1.0. ++ ++@item -fdiagnostics-column-origin=@var{ORIGIN} ++@opindex fdiagnostics-column-origin ++Select the origin for column numbers, i.e. the column number assigned to the ++first column. The default value of 1 corresponds to traditional GCC ++behavior and to the GNU style guide. Some utilities may perform better with an ++origin of 0; any non-negative value may be specified. ++ + @item -fdiagnostics-format=@var{FORMAT} + @opindex fdiagnostics-format + Select a different format for printing diagnostics. +@@ -4459,11 +4486,15 @@ might be printed in JSON form (after for + "locations": [ + @{ + "caret": @{ ++ "display-column": 3, ++ "byte-column": 3, + "column": 3, + "file": "misleading-indentation.c", + "line": 15 + @}, + "finish": @{ ++ "display-column": 4, ++ "byte-column": 4, + "column": 4, + "file": "misleading-indentation.c", + "line": 15 +@@ -4479,6 +4510,8 @@ might be printed in JSON form (after for + "locations": [ + @{ + "caret": @{ ++ "display-column": 5, ++ "byte-column": 5, + "column": 5, + "file": "misleading-indentation.c", + "line": 17 +@@ -4488,6 +4521,7 @@ might be printed in JSON form (after for + "message": "...this statement, but the latter is @dots{}" + @} + ] ++ "column-origin": 1, + @}, + @dots{} + ] +@@ -4500,10 +4534,34 @@ A diagnostic has a @code{kind}. If this + an @code{option} key describing the command-line option controlling the + warning. + +-A diagnostic can contain zero or more locations. Each location has up +-to three positions within it: a @code{caret} position and optional +-@code{start} and @code{finish} positions. A location can also have +-an optional @code{label} string. For example, this error: ++A diagnostic can contain zero or more locations. Each location has an ++optional @code{label} string and up to three positions within it: a ++@code{caret} position and optional @code{start} and @code{finish} positions. ++A position is described by a @code{file} name, a @code{line} number, and ++three numbers indicating a column position: ++@itemize @bullet ++ ++@item ++@code{display-column} counts display columns, accounting for tabs and ++multibyte characters. ++ ++@item ++@code{byte-column} counts raw bytes. ++ ++@item ++@code{column} is equal to one of ++the previous two, as dictated by the @option{-fdiagnostics-column-unit} ++option. ++ ++@end itemize ++All three columns are relative to the origin specified by ++@option{-fdiagnostics-column-origin}, which is typically equal to 1 but may ++be set, for instance, to 0 for compatibility with other utilities that ++number columns from 0. The column origin is recorded in the JSON output in ++the @code{column-origin} tag. In the remaining examples below, the extra ++column number outputs have been omitted for brevity. ++ ++For example, this error: + + @smallexample + bad-binary-ops.c:64:23: error: invalid operands to binary + (have 'S' @{aka +diff --git a/gcc/input.c b/gcc/input.c +--- a/gcc/input.c 2020-07-22 23:35:17.664388078 -0700 ++++ b/gcc/input.c 2021-12-25 01:20:53.487636494 -0800 +@@ -913,7 +913,7 @@ make_location (location_t caret, source_ + source line in order to calculate the display width. If that cannot be done + for any reason, then returns the byte column as a fallback. */ + int +-location_compute_display_column (expanded_location exploc) ++location_compute_display_column (expanded_location exploc, int tabstop) + { + if (!(exploc.file && *exploc.file && exploc.line && exploc.column)) + return exploc.column; +@@ -921,7 +921,7 @@ location_compute_display_column (expande + /* If line is NULL, this function returns exploc.column which is the + desired fallback. */ + return cpp_byte_column_to_display_column (line.get_buffer (), line.length (), +- exploc.column); ++ exploc.column, tabstop); + } + + /* Dump statistics to stderr about the memory usage of the line_table +@@ -3608,33 +3608,46 @@ test_line_offset_overflow () + + void test_cpp_utf8 () + { ++ const int def_tabstop = 8; + /* Verify that wcwidth of invalid UTF-8 or control bytes is 1. */ + { +- int w_bad = cpp_display_width ("\xf0!\x9f!\x98!\x82!", 8); ++ int w_bad = cpp_display_width ("\xf0!\x9f!\x98!\x82!", 8, def_tabstop); + ASSERT_EQ (8, w_bad); +- int w_ctrl = cpp_display_width ("\r\t\n\v\0\1", 6); +- ASSERT_EQ (6, w_ctrl); ++ int w_ctrl = cpp_display_width ("\r\n\v\0\1", 5, def_tabstop); ++ ASSERT_EQ (5, w_ctrl); + } + + /* Verify that wcwidth of valid UTF-8 is as expected. */ + { +- const int w_pi = cpp_display_width ("\xcf\x80", 2); ++ const int w_pi = cpp_display_width ("\xcf\x80", 2, def_tabstop); + ASSERT_EQ (1, w_pi); +- const int w_emoji = cpp_display_width ("\xf0\x9f\x98\x82", 4); ++ const int w_emoji = cpp_display_width ("\xf0\x9f\x98\x82", 4, def_tabstop); + ASSERT_EQ (2, w_emoji); +- const int w_umlaut_precomposed = cpp_display_width ("\xc3\xbf", 2); ++ const int w_umlaut_precomposed = cpp_display_width ("\xc3\xbf", 2, ++ def_tabstop); + ASSERT_EQ (1, w_umlaut_precomposed); +- const int w_umlaut_combining = cpp_display_width ("y\xcc\x88", 3); ++ const int w_umlaut_combining = cpp_display_width ("y\xcc\x88", 3, ++ def_tabstop); + ASSERT_EQ (1, w_umlaut_combining); +- const int w_han = cpp_display_width ("\xe4\xb8\xba", 3); ++ const int w_han = cpp_display_width ("\xe4\xb8\xba", 3, def_tabstop); + ASSERT_EQ (2, w_han); +- const int w_ascii = cpp_display_width ("GCC", 3); ++ const int w_ascii = cpp_display_width ("GCC", 3, def_tabstop); + ASSERT_EQ (3, w_ascii); + const int w_mixed = cpp_display_width ("\xcf\x80 = 3.14 \xf0\x9f\x98\x82" +- "\x9f! \xe4\xb8\xba y\xcc\x88", 24); ++ "\x9f! \xe4\xb8\xba y\xcc\x88", ++ 24, def_tabstop); + ASSERT_EQ (18, w_mixed); + } + ++ /* Verify that display width properly expands tabs. */ ++ { ++ const char *tstr = "\tabc\td"; ++ ASSERT_EQ (6, cpp_display_width (tstr, 6, 1)); ++ ASSERT_EQ (10, cpp_display_width (tstr, 6, 3)); ++ ASSERT_EQ (17, cpp_display_width (tstr, 6, 8)); ++ ASSERT_EQ (1, cpp_display_column_to_byte_column (tstr, 6, 7, 8)); ++ } ++ + /* Verify that cpp_byte_column_to_display_column can go past the end, + and similar edge cases. */ + { +@@ -3645,10 +3658,13 @@ void test_cpp_utf8 () + /* 111122223456 + Byte columns. */ + +- ASSERT_EQ (5, cpp_display_width (str, 6)); +- ASSERT_EQ (105, cpp_byte_column_to_display_column (str, 6, 106)); +- ASSERT_EQ (10000, cpp_byte_column_to_display_column (NULL, 0, 10000)); +- ASSERT_EQ (0, cpp_byte_column_to_display_column (NULL, 10000, 0)); ++ ASSERT_EQ (5, cpp_display_width (str, 6, def_tabstop)); ++ ASSERT_EQ (105, ++ cpp_byte_column_to_display_column (str, 6, 106, def_tabstop)); ++ ASSERT_EQ (10000, ++ cpp_byte_column_to_display_column (NULL, 0, 10000, def_tabstop)); ++ ASSERT_EQ (0, ++ cpp_byte_column_to_display_column (NULL, 10000, 0, def_tabstop)); + } + + /* Verify that cpp_display_column_to_byte_column can go past the end, +@@ -3662,21 +3678,25 @@ void test_cpp_utf8 () + /* 000000000000000000000000000000000111111 + 111122223333444456666777788889999012345 + Byte columns. */ +- ASSERT_EQ (4, cpp_display_column_to_byte_column (str, 15, 2)); +- ASSERT_EQ (15, cpp_display_column_to_byte_column (str, 15, 11)); +- ASSERT_EQ (115, cpp_display_column_to_byte_column (str, 15, 111)); +- ASSERT_EQ (10000, cpp_display_column_to_byte_column (NULL, 0, 10000)); +- ASSERT_EQ (0, cpp_display_column_to_byte_column (NULL, 10000, 0)); ++ ASSERT_EQ (4, cpp_display_column_to_byte_column (str, 15, 2, def_tabstop)); ++ ASSERT_EQ (15, ++ cpp_display_column_to_byte_column (str, 15, 11, def_tabstop)); ++ ASSERT_EQ (115, ++ cpp_display_column_to_byte_column (str, 15, 111, def_tabstop)); ++ ASSERT_EQ (10000, ++ cpp_display_column_to_byte_column (NULL, 0, 10000, def_tabstop)); ++ ASSERT_EQ (0, ++ cpp_display_column_to_byte_column (NULL, 10000, 0, def_tabstop)); + + /* Verify that we do not interrupt a UTF-8 sequence. */ +- ASSERT_EQ (4, cpp_display_column_to_byte_column (str, 15, 1)); ++ ASSERT_EQ (4, cpp_display_column_to_byte_column (str, 15, 1, def_tabstop)); + + for (int byte_col = 1; byte_col <= 15; ++byte_col) + { +- const int disp_col = cpp_byte_column_to_display_column (str, 15, +- byte_col); +- const int byte_col2 = cpp_display_column_to_byte_column (str, 15, +- disp_col); ++ const int disp_col ++ = cpp_byte_column_to_display_column (str, 15, byte_col, def_tabstop); ++ const int byte_col2 ++ = cpp_display_column_to_byte_column (str, 15, disp_col, def_tabstop); + + /* If we ask for the display column in the middle of a UTF-8 + sequence, it will return the length of the partial sequence, +diff --git a/gcc/input.h b/gcc/input.h +--- a/gcc/input.h 2020-07-22 23:35:17.664388078 -0700 ++++ b/gcc/input.h 2021-12-25 01:20:53.487636494 -0800 +@@ -38,7 +38,9 @@ STATIC_ASSERT (BUILTINS_LOCATION < RESER + + extern bool is_location_from_builtin_token (location_t); + extern expanded_location expand_location (location_t); +-extern int location_compute_display_column (expanded_location); ++ ++extern int location_compute_display_column (expanded_location exploc, ++ int tabstop); + + /* A class capturing the bounds of a buffer, to allow for run-time + bounds-checking in a checked build. */ +diff --git a/gcc/opts.c b/gcc/opts.c +--- a/gcc/opts.c 2020-07-22 23:35:17.708388562 -0700 ++++ b/gcc/opts.c 2021-12-25 01:20:53.487636494 -0800 +@@ -2439,6 +2439,14 @@ common_handle_option (struct gcc_options + dc->parseable_fixits_p = value; + break; + ++ case OPT_fdiagnostics_column_unit_: ++ dc->column_unit = (enum diagnostics_column_unit)value; ++ break; ++ ++ case OPT_fdiagnostics_column_origin_: ++ dc->column_origin = value; ++ break; ++ + case OPT_fdiagnostics_show_cwe: + dc->show_cwe = value; + break; +@@ -2825,6 +2833,12 @@ common_handle_option (struct gcc_options + check_alignment_argument (loc, arg, "functions"); + break; + ++ case OPT_ftabstop_: ++ /* It is documented that we silently ignore silly values. */ ++ if (value >= 1 && value <= 100) ++ dc->tabstop = value; ++ break; ++ + default: + /* If the flag was handled in a standard way, assume the lack of + processing here is intentional. */ +diff --git a/gcc/testsuite/c-c++-common/diagnostic-format-json-1.c b/gcc/testsuite/c-c++-common/diagnostic-format-json-1.c +--- a/gcc/testsuite/c-c++-common/diagnostic-format-json-1.c 2020-07-22 23:35:17.908390765 -0700 ++++ b/gcc/testsuite/c-c++-common/diagnostic-format-json-1.c 2021-12-25 01:20:53.487636494 -0800 +@@ -8,17 +8,22 @@ + We can't rely on any ordering of the keys. */ + + /* { dg-regexp "\"kind\": \"error\"" } */ ++/* { dg-regexp "\"column-origin\": 1" } */ + /* { dg-regexp "\"message\": \"#error message\"" } */ + + /* { dg-regexp "\"caret\": \{" } */ + /* { dg-regexp "\"file\": \"\[^\n\r\"\]*diagnostic-format-json-1.c\"" } */ + /* { dg-regexp "\"line\": 4" } */ + /* { dg-regexp "\"column\": 2" } */ ++/* { dg-regexp "\"display-column\": 2" } */ ++/* { dg-regexp "\"byte-column\": 2" } */ + + /* { dg-regexp "\"finish\": \{" } */ + /* { dg-regexp "\"file\": \"\[^\n\r\"\]*diagnostic-format-json-1.c\"" } */ + /* { dg-regexp "\"line\": 4" } */ + /* { dg-regexp "\"column\": 6" } */ ++/* { dg-regexp "\"display-column\": 6" } */ ++/* { dg-regexp "\"byte-column\": 6" } */ + + /* { dg-regexp "\"locations\": \[\[\{\}, \]*\]" } */ + /* { dg-regexp "\"children\": \[\[\]\[\]\]" } */ +diff --git a/gcc/testsuite/c-c++-common/diagnostic-format-json-2.c b/gcc/testsuite/c-c++-common/diagnostic-format-json-2.c +--- a/gcc/testsuite/c-c++-common/diagnostic-format-json-2.c 2020-07-22 23:35:17.908390765 -0700 ++++ b/gcc/testsuite/c-c++-common/diagnostic-format-json-2.c 2021-12-25 01:20:53.487636494 -0800 +@@ -8,6 +8,7 @@ + We can't rely on any ordering of the keys. */ + + /* { dg-regexp "\"kind\": \"warning\"" } */ ++/* { dg-regexp "\"column-origin\": 1" } */ + /* { dg-regexp "\"message\": \"#warning message\"" } */ + /* { dg-regexp "\"option\": \"-Wcpp\"" } */ + /* { dg-regexp "\"option_url\": \"https:\[^\n\r\"\]*#index-Wcpp\"" } */ +@@ -16,11 +17,15 @@ + /* { dg-regexp "\"file\": \"\[^\n\r\"\]*diagnostic-format-json-2.c\"" } */ + /* { dg-regexp "\"line\": 4" } */ + /* { dg-regexp "\"column\": 2" } */ ++/* { dg-regexp "\"display-column\": 2" } */ ++/* { dg-regexp "\"byte-column\": 2" } */ + + /* { dg-regexp "\"finish\": \{" } */ + /* { dg-regexp "\"file\": \"\[^\n\r\"\]*diagnostic-format-json-2.c\"" } */ + /* { dg-regexp "\"line\": 4" } */ + /* { dg-regexp "\"column\": 8" } */ ++/* { dg-regexp "\"display-column\": 8" } */ ++/* { dg-regexp "\"byte-column\": 8" } */ + + /* { dg-regexp "\"locations\": \[\[\{\}, \]*\]" } */ + /* { dg-regexp "\"children\": \[\[\]\[\]\]" } */ +diff --git a/gcc/testsuite/c-c++-common/diagnostic-format-json-3.c b/gcc/testsuite/c-c++-common/diagnostic-format-json-3.c +--- a/gcc/testsuite/c-c++-common/diagnostic-format-json-3.c 2020-07-22 23:35:17.908390765 -0700 ++++ b/gcc/testsuite/c-c++-common/diagnostic-format-json-3.c 2021-12-25 01:20:53.487636494 -0800 +@@ -8,6 +8,7 @@ + We can't rely on any ordering of the keys. */ + + /* { dg-regexp "\"kind\": \"error\"" } */ ++/* { dg-regexp "\"column-origin\": 1" } */ + /* { dg-regexp "\"message\": \"#warning message\"" } */ + /* { dg-regexp "\"option\": \"-Werror=cpp\"" } */ + /* { dg-regexp "\"option_url\": \"https:\[^\n\r\"\]*#index-Wcpp\"" } */ +@@ -16,11 +17,15 @@ + /* { dg-regexp "\"file\": \"\[^\n\r\"\]*diagnostic-format-json-3.c\"" } */ + /* { dg-regexp "\"line\": 4" } */ + /* { dg-regexp "\"column\": 2" } */ ++/* { dg-regexp "\"display-column\": 2" } */ ++/* { dg-regexp "\"byte-column\": 2" } */ + + /* { dg-regexp "\"finish\": \{" } */ + /* { dg-regexp "\"file\": \"\[^\n\r\"\]*diagnostic-format-json-3.c\"" } */ + /* { dg-regexp "\"line\": 4" } */ + /* { dg-regexp "\"column\": 8" } */ ++/* { dg-regexp "\"display-column\": 8" } */ ++/* { dg-regexp "\"byte-column\": 8" } */ + + /* { dg-regexp "\"locations\": \[\[\{\}, \]*\]" } */ + /* { dg-regexp "\"children\": \[\[\]\[\]\]" } */ +diff --git a/gcc/testsuite/c-c++-common/diagnostic-format-json-4.c b/gcc/testsuite/c-c++-common/diagnostic-format-json-4.c +--- a/gcc/testsuite/c-c++-common/diagnostic-format-json-4.c 2020-07-22 23:35:17.908390765 -0700 ++++ b/gcc/testsuite/c-c++-common/diagnostic-format-json-4.c 2021-12-25 01:20:53.487636494 -0800 +@@ -24,15 +24,20 @@ int test (void) + /* { dg-regexp "\"file\": \"\[^\n\r\"\]*diagnostic-format-json-4.c\"" } */ + /* { dg-regexp "\"line\": 8" } */ + /* { dg-regexp "\"column\": 5" } */ ++/* { dg-regexp "\"display-column\": 5" } */ ++/* { dg-regexp "\"byte-column\": 5" } */ + + /* { dg-regexp "\"finish\": \{" } */ + /* { dg-regexp "\"file\": \"\[^\n\r\"\]*diagnostic-format-json-4.c\"" } */ + /* { dg-regexp "\"line\": 8" } */ + /* { dg-regexp "\"column\": 10" } */ ++/* { dg-regexp "\"display-column\": 10" } */ ++/* { dg-regexp "\"byte-column\": 10" } */ + + /* The outer diagnostic. */ + + /* { dg-regexp "\"kind\": \"warning\"" } */ ++/* { dg-regexp "\"column-origin\": 1" } */ + /* { dg-regexp "\"message\": \"this 'if' clause does not guard...\"" } */ + /* { dg-regexp "\"option\": \"-Wmisleading-indentation\"" } */ + /* { dg-regexp "\"option_url\": \"https:\[^\n\r\"\]*#index-Wmisleading-indentation\"" } */ +@@ -41,11 +46,15 @@ int test (void) + /* { dg-regexp "\"file\": \"\[^\n\r\"\]*diagnostic-format-json-4.c\"" } */ + /* { dg-regexp "\"line\": 6" } */ + /* { dg-regexp "\"column\": 3" } */ ++/* { dg-regexp "\"display-column\": 3" } */ ++/* { dg-regexp "\"byte-column\": 3" } */ + + /* { dg-regexp "\"finish\": \{" } */ + /* { dg-regexp "\"file\": \"\[^\n\r\"\]*diagnostic-format-json-4.c\"" } */ + /* { dg-regexp "\"line\": 6" } */ + /* { dg-regexp "\"column\": 4" } */ ++/* { dg-regexp "\"display-column\": 4" } */ ++/* { dg-regexp "\"byte-column\": 4" } */ + + /* More from the nested diagnostic (we can't guarantee what order the + "file" keys are consumed). */ +diff --git a/gcc/testsuite/c-c++-common/diagnostic-format-json-5.c b/gcc/testsuite/c-c++-common/diagnostic-format-json-5.c +--- a/gcc/testsuite/c-c++-common/diagnostic-format-json-5.c 2020-07-22 23:35:17.908390765 -0700 ++++ b/gcc/testsuite/c-c++-common/diagnostic-format-json-5.c 2021-12-25 01:20:53.487636494 -0800 +@@ -13,6 +13,7 @@ int test (struct s *ptr) + We can't rely on any ordering of the keys. */ + + /* { dg-regexp "\"kind\": \"error\"" } */ ++/* { dg-regexp "\"column-origin\": 1" } */ + /* { dg-regexp "\"message\": \".*\"" } */ + + /* Verify fix-it hints. */ +@@ -23,11 +24,15 @@ int test (struct s *ptr) + /* { dg-regexp "\"file\": \"\[^\n\r\"\]*diagnostic-format-json-5.c\"" } */ + /* { dg-regexp "\"line\": 8" } */ + /* { dg-regexp "\"column\": 15" } */ ++/* { dg-regexp "\"display-column\": 15" } */ ++/* { dg-regexp "\"byte-column\": 15" } */ + + /* { dg-regexp "\"next\": \{" } */ + /* { dg-regexp "\"file\": \"\[^\n\r\"\]*diagnostic-format-json-5.c\"" } */ + /* { dg-regexp "\"line\": 8" } */ + /* { dg-regexp "\"column\": 21" } */ ++/* { dg-regexp "\"display-column\": 21" } */ ++/* { dg-regexp "\"byte-column\": 21" } */ + + /* { dg-regexp "\"fixits\": \[\[\{\}, \]*\]" } */ + +@@ -35,11 +40,15 @@ int test (struct s *ptr) + /* { dg-regexp "\"file\": \"\[^\n\r\"\]*diagnostic-format-json-5.c\"" } */ + /* { dg-regexp "\"line\": 8" } */ + /* { dg-regexp "\"column\": 15" } */ ++/* { dg-regexp "\"display-column\": 15" } */ ++/* { dg-regexp "\"byte-column\": 15" } */ + + /* { dg-regexp "\"finish\": \{" } */ + /* { dg-regexp "\"file\": \"\[^\n\r\"\]*diagnostic-format-json-5.c\"" } */ + /* { dg-regexp "\"line\": 8" } */ + /* { dg-regexp "\"column\": 20" } */ ++/* { dg-regexp "\"display-column\": 20" } */ ++/* { dg-regexp "\"byte-column\": 20" } */ + + /* { dg-regexp "\"locations\": \[\[\{\}, \]*\]" } */ + /* { dg-regexp "\"children\": \[\[\]\[\]\]" } */ +diff --git a/gcc/testsuite/c-c++-common/diagnostic-units-1.c b/gcc/testsuite/c-c++-common/diagnostic-units-1.c +--- a/gcc/testsuite/c-c++-common/diagnostic-units-1.c 1969-12-31 16:00:00.000000000 -0800 ++++ b/gcc/testsuite/c-c++-common/diagnostic-units-1.c 2021-12-25 01:20:53.487636494 -0800 +@@ -0,0 +1,28 @@ ++/* { dg-do compile } */ ++/* { dg-additional-options "-fdiagnostics-column-unit=byte -fshow-column -fdiagnostics-show-caret -Wmultichar" } */ ++ ++/* column units: bytes (via arg) ++ column origin: 1 (via default) ++ tabstop: 8 (via default) */ ++ ++/* This line starts with a tab. */ ++ int c1 = 'c1'; /* { dg-warning "11: multi-character character constant" } */ ++/* { dg-begin-multiline-output "" } ++ int c1 = 'c1'; ++ ^~~~ ++ { dg-end-multiline-output "" } */ ++ ++/* This line starts with spaces. */ ++ int c2 = 'c2'; /* { dg-warning "18: multi-character character constant" } */ ++/* { dg-begin-multiline-output "" } ++ int c2 = 'c2'; ++ ^~~~ ++ { dg-end-multiline-output "" } */ ++ ++/* This line starts with spaces and has an internal tab after ++ a space. */ ++ int c3 = 'c3'; /* { dg-warning "19: multi-character character constant" } */ ++/* { dg-begin-multiline-output "" } ++ int c3 = 'c3'; ++ ^~~~ ++ { dg-end-multiline-output "" } */ +diff --git a/gcc/testsuite/c-c++-common/diagnostic-units-2.c b/gcc/testsuite/c-c++-common/diagnostic-units-2.c +--- a/gcc/testsuite/c-c++-common/diagnostic-units-2.c 1969-12-31 16:00:00.000000000 -0800 ++++ b/gcc/testsuite/c-c++-common/diagnostic-units-2.c 2021-12-25 01:20:53.487636494 -0800 +@@ -0,0 +1,28 @@ ++/* { dg-do compile } */ ++/* { dg-additional-options "-fdiagnostics-column-unit=display -fshow-column -fdiagnostics-show-caret -Wmultichar" } */ ++ ++/* column units: display (via arg) ++ column origin: 1 (via default) ++ tabstop: 8 (via default) */ ++ ++/* This line starts with a tab. */ ++ int c1 = 'c1'; /* { dg-warning "18: multi-character character constant" } */ ++/* { dg-begin-multiline-output "" } ++ int c1 = 'c1'; ++ ^~~~ ++ { dg-end-multiline-output "" } */ ++ ++/* This line starts with spaces. */ ++ int c2 = 'c2'; /* { dg-warning "18: multi-character character constant" } */ ++/* { dg-begin-multiline-output "" } ++ int c2 = 'c2'; ++ ^~~~ ++ { dg-end-multiline-output "" } */ ++ ++/* This line starts with spaces and has an internal tab after ++ a space. */ ++ int c3 = 'c3'; /* { dg-warning "25: multi-character character constant" } */ ++/* { dg-begin-multiline-output "" } ++ int c3 = 'c3'; ++ ^~~~ ++ { dg-end-multiline-output "" } */ +diff --git a/gcc/testsuite/c-c++-common/diagnostic-units-3.c b/gcc/testsuite/c-c++-common/diagnostic-units-3.c +--- a/gcc/testsuite/c-c++-common/diagnostic-units-3.c 1969-12-31 16:00:00.000000000 -0800 ++++ b/gcc/testsuite/c-c++-common/diagnostic-units-3.c 2021-12-25 01:20:53.487636494 -0800 +@@ -0,0 +1,28 @@ ++/* { dg-do compile } */ ++/* { dg-additional-options "-fdiagnostics-column-unit=byte -fshow-column -fdiagnostics-show-caret -ftabstop=200 -Wmultichar" } */ ++ ++/* column units: bytes (via arg) ++ column origin: 1 (via fallback from overly large argument) ++ tabstop: 8 (via default) */ ++ ++/* This line starts with a tab. */ ++ int c1 = 'c1'; /* { dg-warning "11: multi-character character constant" } */ ++/* { dg-begin-multiline-output "" } ++ int c1 = 'c1'; ++ ^~~~ ++ { dg-end-multiline-output "" } */ ++ ++/* This line starts with spaces. */ ++ int c2 = 'c2'; /* { dg-warning "18: multi-character character constant" } */ ++/* { dg-begin-multiline-output "" } ++ int c2 = 'c2'; ++ ^~~~ ++ { dg-end-multiline-output "" } */ ++ ++/* This line starts with spaces and has an internal tab after ++ a space. */ ++ int c3 = 'c3'; /* { dg-warning "19: multi-character character constant" } */ ++/* { dg-begin-multiline-output "" } ++ int c3 = 'c3'; ++ ^~~~ ++ { dg-end-multiline-output "" } */ +diff --git a/gcc/testsuite/c-c++-common/diagnostic-units-4.c b/gcc/testsuite/c-c++-common/diagnostic-units-4.c +--- a/gcc/testsuite/c-c++-common/diagnostic-units-4.c 1969-12-31 16:00:00.000000000 -0800 ++++ b/gcc/testsuite/c-c++-common/diagnostic-units-4.c 2021-12-25 01:20:53.487636494 -0800 +@@ -0,0 +1,28 @@ ++/* { dg-do compile } */ ++/* { dg-additional-options "-fdiagnostics-column-unit=byte -fshow-column -fdiagnostics-show-caret -fdiagnostics-column-origin=0 -Wmultichar" } */ ++ ++/* column units: bytes (via arg) ++ column origin: 0 (via arg) ++ tabstop: 8 (via default) */ ++ ++/* This line starts with a tab. */ ++ int c1 = 'c1'; /* { dg-warning "10: multi-character character constant" } */ ++/* { dg-begin-multiline-output "" } ++ int c1 = 'c1'; ++ ^~~~ ++ { dg-end-multiline-output "" } */ ++ ++/* This line starts with spaces. */ ++ int c2 = 'c2'; /* { dg-warning "17: multi-character character constant" } */ ++/* { dg-begin-multiline-output "" } ++ int c2 = 'c2'; ++ ^~~~ ++ { dg-end-multiline-output "" } */ ++ ++/* This line starts with spaces and has an internal tab after ++ a space. */ ++ int c3 = 'c3'; /* { dg-warning "18: multi-character character constant" } */ ++/* { dg-begin-multiline-output "" } ++ int c3 = 'c3'; ++ ^~~~ ++ { dg-end-multiline-output "" } */ +diff --git a/gcc/testsuite/c-c++-common/diagnostic-units-5.c b/gcc/testsuite/c-c++-common/diagnostic-units-5.c +--- a/gcc/testsuite/c-c++-common/diagnostic-units-5.c 1969-12-31 16:00:00.000000000 -0800 ++++ b/gcc/testsuite/c-c++-common/diagnostic-units-5.c 2021-12-25 01:20:53.491636427 -0800 +@@ -0,0 +1,28 @@ ++/* { dg-do compile } */ ++/* { dg-additional-options "-fdiagnostics-column-unit=display -fshow-column -fdiagnostics-show-caret -fdiagnostics-column-origin=0 -Wmultichar" } */ ++ ++/* column units: display (via arg) ++ column origin: 0 (via arg) ++ tabstop: 8 (via default) */ ++ ++/* This line starts with a tab. */ ++ int c1 = 'c1'; /* { dg-warning "17: multi-character character constant" } */ ++/* { dg-begin-multiline-output "" } ++ int c1 = 'c1'; ++ ^~~~ ++ { dg-end-multiline-output "" } */ ++ ++/* This line starts with spaces. */ ++ int c2 = 'c2'; /* { dg-warning "17: multi-character character constant" } */ ++/* { dg-begin-multiline-output "" } ++ int c2 = 'c2'; ++ ^~~~ ++ { dg-end-multiline-output "" } */ ++ ++/* This line starts with spaces and has an internal tab after ++ a space. */ ++ int c3 = 'c3'; /* { dg-warning "24: multi-character character constant" } */ ++/* { dg-begin-multiline-output "" } ++ int c3 = 'c3'; ++ ^~~~ ++ { dg-end-multiline-output "" } */ +diff --git a/gcc/testsuite/c-c++-common/diagnostic-units-6.c b/gcc/testsuite/c-c++-common/diagnostic-units-6.c +--- a/gcc/testsuite/c-c++-common/diagnostic-units-6.c 1969-12-31 16:00:00.000000000 -0800 ++++ b/gcc/testsuite/c-c++-common/diagnostic-units-6.c 2021-12-25 01:20:53.491636427 -0800 +@@ -0,0 +1,28 @@ ++/* { dg-do compile } */ ++/* { dg-additional-options "-fdiagnostics-column-unit=byte -fshow-column -fdiagnostics-show-caret -fdiagnostics-column-origin=100 -Wmultichar" } */ ++ ++/* column units: bytes (via arg) ++ column origin: 100 (via arg) ++ tabstop: 8 (via default) */ ++ ++/* This line starts with a tab. */ ++ int c1 = 'c1'; /* { dg-warning "110: multi-character character constant" } */ ++/* { dg-begin-multiline-output "" } ++ int c1 = 'c1'; ++ ^~~~ ++ { dg-end-multiline-output "" } */ ++ ++/* This line starts with spaces. */ ++ int c2 = 'c2'; /* { dg-warning "117: multi-character character constant" } */ ++/* { dg-begin-multiline-output "" } ++ int c2 = 'c2'; ++ ^~~~ ++ { dg-end-multiline-output "" } */ ++ ++/* This line starts with spaces and has an internal tab after ++ a space. */ ++ int c3 = 'c3'; /* { dg-warning "118: multi-character character constant" } */ ++/* { dg-begin-multiline-output "" } ++ int c3 = 'c3'; ++ ^~~~ ++ { dg-end-multiline-output "" } */ +diff --git a/gcc/testsuite/c-c++-common/diagnostic-units-7.c b/gcc/testsuite/c-c++-common/diagnostic-units-7.c +--- a/gcc/testsuite/c-c++-common/diagnostic-units-7.c 1969-12-31 16:00:00.000000000 -0800 ++++ b/gcc/testsuite/c-c++-common/diagnostic-units-7.c 2021-12-25 01:20:53.491636427 -0800 +@@ -0,0 +1,28 @@ ++/* { dg-do compile } */ ++/* { dg-additional-options "-fdiagnostics-column-unit=byte -fshow-column -fdiagnostics-show-caret -ftabstop=9 -Wmultichar" } */ ++ ++/* column units: bytes (via arg) ++ column origin: 1 (via default) ++ tabstop: 9 (via arg) */ ++ ++/* This line starts with a tab. */ ++ int c1 = 'c1'; /* { dg-warning "11: multi-character character constant" } */ ++/* { dg-begin-multiline-output "" } ++ int c1 = 'c1'; ++ ^~~~ ++ { dg-end-multiline-output "" } */ ++ ++/* This line starts with spaces. */ ++ int c2 = 'c2'; /* { dg-warning "19: multi-character character constant" } */ ++/* { dg-begin-multiline-output "" } ++ int c2 = 'c2'; ++ ^~~~ ++ { dg-end-multiline-output "" } */ ++ ++/* This line starts with spaces and has an internal tab after ++ a space. */ ++ int c3 = 'c3'; /* { dg-warning "20: multi-character character constant" } */ ++/* { dg-begin-multiline-output "" } ++ int c3 = 'c3'; ++ ^~~~ ++ { dg-end-multiline-output "" } */ +diff --git a/gcc/testsuite/c-c++-common/diagnostic-units-8.c b/gcc/testsuite/c-c++-common/diagnostic-units-8.c +--- a/gcc/testsuite/c-c++-common/diagnostic-units-8.c 1969-12-31 16:00:00.000000000 -0800 ++++ b/gcc/testsuite/c-c++-common/diagnostic-units-8.c 2021-12-25 01:20:53.491636427 -0800 +@@ -0,0 +1,28 @@ ++/* { dg-do compile } */ ++/* { dg-additional-options "-fshow-column -fdiagnostics-show-caret -ftabstop=9 -Wmultichar" } */ ++ ++/* column units: display (via default) ++ column origin: 1 (via default) ++ tabstop: 9 (via arg) */ ++ ++/* This line starts with a tab. */ ++ int c1 = 'c1'; /* { dg-warning "19: multi-character character constant" } */ ++/* { dg-begin-multiline-output "" } ++ int c1 = 'c1'; ++ ^~~~ ++ { dg-end-multiline-output "" } */ ++ ++/* This line starts with spaces. */ ++ int c2 = 'c2'; /* { dg-warning "19: multi-character character constant" } */ ++/* { dg-begin-multiline-output "" } ++ int c2 = 'c2'; ++ ^~~~ ++ { dg-end-multiline-output "" } */ ++ ++/* This line starts with spaces and has an internal tab after ++ a space. */ ++ int c3 = 'c3'; /* { dg-warning "28: multi-character character constant" } */ ++/* { dg-begin-multiline-output "" } ++ int c3 = 'c3'; ++ ^~~~ ++ { dg-end-multiline-output "" } */ +diff --git a/gcc/testsuite/c-c++-common/missing-close-symbol.c b/gcc/testsuite/c-c++-common/missing-close-symbol.c +--- a/gcc/testsuite/c-c++-common/missing-close-symbol.c 2020-07-22 23:35:17.912390810 -0700 ++++ b/gcc/testsuite/c-c++-common/missing-close-symbol.c 2021-12-25 01:20:53.491636427 -0800 +@@ -24,9 +24,9 @@ void test_static_assert_different_line ( + _Static_assert(sizeof(int) >= sizeof(char), /* { dg-message "to match this '\\('" } */ + "msg"; /* { dg-error "expected '\\)' before ';' token" } */ + /* { dg-begin-multiline-output "" } +- "msg"; +- ^ +- ) ++ "msg"; ++ ^ ++ ) + { dg-end-multiline-output "" } */ + /* { dg-begin-multiline-output "" } + _Static_assert(sizeof(int) >= sizeof(char), +diff --git a/gcc/testsuite/c-c++-common/Wmisleading-indentation-3.c b/gcc/testsuite/c-c++-common/Wmisleading-indentation-3.c +--- a/gcc/testsuite/c-c++-common/Wmisleading-indentation-3.c 2020-07-22 23:35:17.904390722 -0700 ++++ b/gcc/testsuite/c-c++-common/Wmisleading-indentation-3.c 2021-12-25 01:20:53.487636494 -0800 +@@ -36,20 +36,20 @@ int fn_6 (int a, int b, int c) + /* ... */ + if ((err = foo (a)) != 0) + goto fail; +- if ((err = foo (b)) != 0) /* { dg-message "2: this 'if' clause does not guard..." } */ ++ if ((err = foo (b)) != 0) /* { dg-message "9: this 'if' clause does not guard..." } */ + goto fail; +- goto fail; /* { dg-message "3: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'" } */ ++ goto fail; /* { dg-message "17: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'" } */ + if ((err = foo (c)) != 0) + goto fail; + /* ... */ + + /* { dg-begin-multiline-output "" } +- if ((err = foo (b)) != 0) +- ^~ ++ if ((err = foo (b)) != 0) ++ ^~ + { dg-end-multiline-output "" } */ + /* { dg-begin-multiline-output "" } +- goto fail; +- ^~~~ ++ goto fail; ++ ^~~~ + { dg-end-multiline-output "" } */ + + fail: +diff --git a/gcc/testsuite/c-c++-common/Wmisleading-indentation.c b/gcc/testsuite/c-c++-common/Wmisleading-indentation.c +--- a/gcc/testsuite/c-c++-common/Wmisleading-indentation.c 2020-07-22 23:35:17.904390722 -0700 ++++ b/gcc/testsuite/c-c++-common/Wmisleading-indentation.c 2021-12-25 01:20:53.487636494 -0800 +@@ -65,9 +65,9 @@ int fn_6 (int a, int b, int c) + /* ... */ + if ((err = foo (a)) != 0) + goto fail; +- if ((err = foo (b)) != 0) /* { dg-message "2: this 'if' clause does not guard..." } */ ++ if ((err = foo (b)) != 0) /* { dg-message "9: this 'if' clause does not guard..." } */ + goto fail; +- goto fail; /* { dg-message "3: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'" } */ ++ goto fail; /* { dg-message "17: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'" } */ + if ((err = foo (c)) != 0) + goto fail; + /* ... */ +@@ -178,7 +178,7 @@ void fn_16_tabs (void) + while (flagA) + if (flagB) /* { dg-message "7: this 'if' clause does not guard..." } */ + foo (0); +- foo (1);/* { dg-message "2: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'" } */ ++ foo (1);/* { dg-message "9: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'" } */ + } + + void fn_17_spaces (void) +diff --git a/gcc/testsuite/gcc.dg/analyzer/malloc-paths-9.c b/gcc/testsuite/gcc.dg/analyzer/malloc-paths-9.c +--- a/gcc/testsuite/gcc.dg/analyzer/malloc-paths-9.c 2020-07-22 23:35:18.124393144 -0700 ++++ b/gcc/testsuite/gcc.dg/analyzer/malloc-paths-9.c 2021-12-25 01:20:53.491636427 -0800 +@@ -288,7 +288,7 @@ int test_3 (int x, int y) + | | ~~~~~~~~~~ + | | | + | | (4) ...to here +- | NN | to dereference it above ++ | NN | to dereference it above + | NN | return *ptr; + | | ~~~~ + | | | +diff --git a/gcc/testsuite/gcc.dg/bad-binary-ops.c b/gcc/testsuite/gcc.dg/bad-binary-ops.c +--- a/gcc/testsuite/gcc.dg/bad-binary-ops.c 2020-07-22 23:35:18.128393190 -0700 ++++ b/gcc/testsuite/gcc.dg/bad-binary-ops.c 2021-12-25 01:20:53.491636427 -0800 +@@ -35,10 +35,10 @@ int test_2 (void) + ~~~~~~~~~~~~~~~~ + | + struct s +- + some_other_function ()); +- ^ ~~~~~~~~~~~~~~~~~~~~~~ +- | +- struct t ++ + some_other_function ()); ++ ^ ~~~~~~~~~~~~~~~~~~~~~~ ++ | ++ struct t + { dg-end-multiline-output "" } */ + } + +diff --git a/gcc/testsuite/gcc.dg/format/branch-1.c b/gcc/testsuite/gcc.dg/format/branch-1.c +--- a/gcc/testsuite/gcc.dg/format/branch-1.c 2020-07-22 23:35:18.152393454 -0700 ++++ b/gcc/testsuite/gcc.dg/format/branch-1.c 2021-12-25 01:20:53.491636427 -0800 +@@ -10,7 +10,7 @@ foo (long l, int nfoo) + { + printf ((nfoo > 1) ? "%d foos" : "%d foo", nfoo); + printf ((l > 1) ? "%d foos" /* { dg-warning "23:int" "wrong type in conditional expr" } */ +- : "%d foo", l); /* { dg-warning "16:int" "wrong type in conditional expr" } */ ++ : "%d foo", l); /* { dg-warning "23:int" "wrong type in conditional expr" } */ + printf ((l > 1) ? "%ld foos" : "%d foo", l); /* { dg-warning "36:int" "wrong type in conditional expr" } */ + printf ((l > 1) ? "%d foos" : "%ld foo", l); /* { dg-warning "23:int" "wrong type in conditional expr" } */ + /* Should allow one case to have extra arguments. */ +diff --git a/gcc/testsuite/gcc.dg/format/pr79210.c b/gcc/testsuite/gcc.dg/format/pr79210.c +--- a/gcc/testsuite/gcc.dg/format/pr79210.c 2020-07-22 23:35:18.152393454 -0700 ++++ b/gcc/testsuite/gcc.dg/format/pr79210.c 2021-12-25 01:20:53.491636427 -0800 +@@ -20,4 +20,4 @@ LPFC_VPORT_ATTR_R(peer_port_login, + "Allow peer ports on the same physical port to login to each " + "other."); + +-/* { dg-warning "6: format .%d. expects argument of type .int., but argument 4 has type .unsigned int. " "" { target *-*-* } .-12 } */ ++/* { dg-warning "20: format .%d. expects argument of type .int., but argument 4 has type .unsigned int. " "" { target *-*-* } .-12 } */ +diff --git a/gcc/testsuite/gcc.dg/plugin/diagnostic-test-expressions-1.c b/gcc/testsuite/gcc.dg/plugin/diagnostic-test-expressions-1.c +--- a/gcc/testsuite/gcc.dg/plugin/diagnostic-test-expressions-1.c 2020-07-22 23:35:18.172393674 -0700 ++++ b/gcc/testsuite/gcc.dg/plugin/diagnostic-test-expressions-1.c 2021-12-25 01:20:53.491636427 -0800 +@@ -540,15 +540,15 @@ void test_builtin_types_compatible_p (un + __emit_expression_range (0, + f (i) + __builtin_types_compatible_p (long, int)); /* { dg-warning "range" } */ + /* { dg-begin-multiline-output "" } +- f (i) + __builtin_types_compatible_p (long, int)); +- ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ++ f (i) + __builtin_types_compatible_p (long, int)); ++ ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + { dg-end-multiline-output "" } */ + + __emit_expression_range (0, + __builtin_types_compatible_p (long, int) + f (i)); /* { dg-warning "range" } */ + /* { dg-begin-multiline-output "" } +- __builtin_types_compatible_p (long, int) + f (i)); +- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~ ++ __builtin_types_compatible_p (long, int) + f (i)); ++ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~ + { dg-end-multiline-output "" } */ + } + +@@ -671,8 +671,8 @@ void test_multiple_ordinary_maps (void) + /* { dg-begin-multiline-output "" } + __emit_expression_range (0, foo (0, + ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +- "0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789")); +- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ++ "0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789")); ++ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + { dg-end-multiline-output "" } */ + + /* Another expression that transitions between ordinary maps; this +@@ -685,8 +685,8 @@ void test_multiple_ordinary_maps (void) + /* { dg-begin-multiline-output "" } + __emit_expression_range (0, foo (0, "01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789", + ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +- 0)); +- ~~ ++ 0)); ++ ~~ + { dg-end-multiline-output "" } */ + } + +diff --git a/gcc/testsuite/gcc.dg/plugin/diagnostic-test-string-literals-1.c b/gcc/testsuite/gcc.dg/plugin/diagnostic-test-string-literals-1.c +--- a/gcc/testsuite/gcc.dg/plugin/diagnostic-test-string-literals-1.c 2020-07-22 23:35:18.172393674 -0700 ++++ b/gcc/testsuite/gcc.dg/plugin/diagnostic-test-string-literals-1.c 2021-12-25 01:20:53.491636427 -0800 +@@ -335,11 +335,11 @@ pr87652 (const char *stem, int counter) + /* { dg-error "unable to read substring location: unable to read source line" "" { target c } 329 } */ + /* { dg-error "unable to read substring location: failed to get ordinary maps" "" { target c++ } 329 } */ + /* { dg-begin-multiline-output "" } +- __emit_string_literal_range(__FILE__":%5d: " format, \ ++ __emit_string_literal_range(__FILE__":%5d: " format, \ + ^~~~~~~~ + { dg-end-multiline-output "" { target c } } */ + /* { dg-begin-multiline-output "" } +- __emit_string_literal_range(__FILE__":%5d: " format, \ ++ __emit_string_literal_range(__FILE__":%5d: " format, \ + ^ + { dg-end-multiline-output "" { target c++ } } */ + +diff --git a/gcc/testsuite/gcc.dg/redecl-4.c b/gcc/testsuite/gcc.dg/redecl-4.c +--- a/gcc/testsuite/gcc.dg/redecl-4.c 2020-07-22 23:35:18.192393895 -0700 ++++ b/gcc/testsuite/gcc.dg/redecl-4.c 2021-12-25 01:20:53.491636427 -0800 +@@ -15,7 +15,7 @@ f (void) + /* Should get format warnings even though the built-in declaration + isn't "visible". */ + printf ( +- "%s", 1); /* { dg-warning "8:format" } */ ++ "%s", 1); /* { dg-warning "15:format" } */ + /* The type of strcmp here should have no prototype. */ + if (0) + strcmp (1); +diff --git a/gcc/testsuite/g++.dg/diagnostic/bad-binary-ops.C b/gcc/testsuite/g++.dg/diagnostic/bad-binary-ops.C +--- a/gcc/testsuite/g++.dg/diagnostic/bad-binary-ops.C 2020-07-22 23:35:17.972391472 -0700 ++++ b/gcc/testsuite/g++.dg/diagnostic/bad-binary-ops.C 2021-12-25 01:20:53.491636427 -0800 +@@ -33,10 +33,10 @@ int test_2 (void) + ~~~~~~~~~~~~~~~~ + | + s +- + some_other_function ()); +- ^ ~~~~~~~~~~~~~~~~~~~~~~ +- | +- t ++ + some_other_function ()); ++ ^ ~~~~~~~~~~~~~~~~~~~~~~ ++ | ++ t + { dg-end-multiline-output "" } */ + } + +diff --git a/gcc/testsuite/g++.dg/parse/error4.C b/gcc/testsuite/g++.dg/parse/error4.C +--- a/gcc/testsuite/g++.dg/parse/error4.C 2020-07-22 23:35:18.012391910 -0700 ++++ b/gcc/testsuite/g++.dg/parse/error4.C 2021-12-25 01:20:53.491636427 -0800 +@@ -7,4 +7,4 @@ struct X { + int); + }; + +-// { dg-error "4:'itn' has not been declared" "" { target *-*-* } 6 } ++// { dg-error "18:'itn' has not been declared" "" { target *-*-* } 6 } +diff --git a/gcc/testsuite/gfortran.dg/diagnostic-format-json-1.F90 b/gcc/testsuite/gfortran.dg/diagnostic-format-json-1.F90 +--- a/gcc/testsuite/gfortran.dg/diagnostic-format-json-1.F90 2020-07-22 23:35:18.512397420 -0700 ++++ b/gcc/testsuite/gfortran.dg/diagnostic-format-json-1.F90 2021-12-25 01:20:53.491636427 -0800 +@@ -8,17 +8,22 @@ + ! We can't rely on any ordering of the keys. + + ! { dg-regexp "\"kind\": \"error\"" } ++! { dg-regexp "\"column-origin\": 1" } + ! { dg-regexp "\"message\": \"#error message\"" } + + ! { dg-regexp "\"caret\": \{" } + ! { dg-regexp "\"file\": \"\[^\n\r\"\]*diagnostic-format-json-1.F90\"" } + ! { dg-regexp "\"line\": 4" } + ! { dg-regexp "\"column\": 2" } ++! { dg-regexp "\"display-column\": 2" } ++! { dg-regexp "\"byte-column\": 2" } + + ! { dg-regexp "\"finish\": \{" } + ! { dg-regexp "\"file\": \"\[^\n\r\"\]*diagnostic-format-json-1.F90\"" } + ! { dg-regexp "\"line\": 4" } + ! { dg-regexp "\"column\": 6" } ++! { dg-regexp "\"display-column\": 6" } ++! { dg-regexp "\"byte-column\": 6" } + + ! { dg-regexp "\"locations\": \[\[\{\}, \]*\]" } + ! { dg-regexp "\"children\": \[\[\]\[\]\]" } +diff --git a/gcc/testsuite/gfortran.dg/diagnostic-format-json-2.F90 b/gcc/testsuite/gfortran.dg/diagnostic-format-json-2.F90 +--- a/gcc/testsuite/gfortran.dg/diagnostic-format-json-2.F90 2020-07-22 23:35:18.512397420 -0700 ++++ b/gcc/testsuite/gfortran.dg/diagnostic-format-json-2.F90 2021-12-25 01:20:53.491636427 -0800 +@@ -8,6 +8,7 @@ + ! We can't rely on any ordering of the keys. + + ! { dg-regexp "\"kind\": \"warning\"" } ++! { dg-regexp "\"column-origin\": 1" } + ! { dg-regexp "\"message\": \"#warning message\"" } + ! { dg-regexp "\"option\": \"-Wcpp\"" } + ! { dg-regexp "\"option_url\": \"\[^\n\r\"\]*#index-Wcpp\"" } +@@ -16,11 +17,15 @@ + ! { dg-regexp "\"file\": \"\[^\n\r\"\]*diagnostic-format-json-2.F90\"" } + ! { dg-regexp "\"line\": 4" } + ! { dg-regexp "\"column\": 2" } ++! { dg-regexp "\"display-column\": 2" } ++! { dg-regexp "\"byte-column\": 2" } + + ! { dg-regexp "\"finish\": \{" } + ! { dg-regexp "\"file\": \"\[^\n\r\"\]*diagnostic-format-json-2.F90\"" } + ! { dg-regexp "\"line\": 4" } + ! { dg-regexp "\"column\": 8" } ++! { dg-regexp "\"display-column\": 8" } ++! { dg-regexp "\"byte-column\": 8" } + + ! { dg-regexp "\"locations\": \[\[\{\}, \]*\]" } + ! { dg-regexp "\"children\": \[\[\]\[\]\]" } +diff --git a/gcc/testsuite/gfortran.dg/diagnostic-format-json-3.F90 b/gcc/testsuite/gfortran.dg/diagnostic-format-json-3.F90 +--- a/gcc/testsuite/gfortran.dg/diagnostic-format-json-3.F90 2020-07-22 23:35:18.512397420 -0700 ++++ b/gcc/testsuite/gfortran.dg/diagnostic-format-json-3.F90 2021-12-25 01:20:53.491636427 -0800 +@@ -8,6 +8,7 @@ + ! We can't rely on any ordering of the keys. + + ! { dg-regexp "\"kind\": \"error\"" } ++! { dg-regexp "\"column-origin\": 1" } + ! { dg-regexp "\"message\": \"#warning message\"" } + ! { dg-regexp "\"option\": \"-Werror=cpp\"" } + ! { dg-regexp "\"option_url\": \"\[^\n\r\"\]*#index-Wcpp\"" } +@@ -16,11 +17,15 @@ + ! { dg-regexp "\"file\": \"\[^\n\r\"\]*diagnostic-format-json-3.F90\"" } + ! { dg-regexp "\"line\": 4" } + ! { dg-regexp "\"column\": 2" } ++! { dg-regexp "\"display-column\": 2" } ++! { dg-regexp "\"byte-column\": 2" } + + ! { dg-regexp "\"finish\": \{" } + ! { dg-regexp "\"file\": \"\[^\n\r\"\]*diagnostic-format-json-3.F90\"" } + ! { dg-regexp "\"line\": 4" } + ! { dg-regexp "\"column\": 8" } ++! { dg-regexp "\"display-column\": 8" } ++! { dg-regexp "\"byte-column\": 8" } + + ! { dg-regexp "\"locations\": \[\[\{\}, \]*\]" } + ! { dg-regexp "\"children\": \[\[\]\[\]\]" } +diff --git a/gcc/testsuite/go.dg/arrayclear.go b/gcc/testsuite/go.dg/arrayclear.go +--- a/gcc/testsuite/go.dg/arrayclear.go 2020-07-22 23:35:18.588398257 -0700 ++++ b/gcc/testsuite/go.dg/arrayclear.go 2021-12-25 01:20:53.491636427 -0800 +@@ -1,5 +1,8 @@ + // { dg-do compile } + // { dg-options "-fgo-debug-optimization" } ++// This comment is necessary to work around a dejagnu bug. Otherwise, the ++// column of the second error message would equal the row of the first one, and ++// since the errors are also identical, dejagnu is not able to distinguish them. + + package p + +diff --git a/gcc/testsuite/g++.old-deja/g++.brendan/crash11.C b/gcc/testsuite/g++.old-deja/g++.brendan/crash11.C +--- a/gcc/testsuite/g++.old-deja/g++.brendan/crash11.C 2020-07-22 23:35:18.048392308 -0700 ++++ b/gcc/testsuite/g++.old-deja/g++.brendan/crash11.C 2021-12-25 01:20:53.491636427 -0800 +@@ -9,13 +9,13 @@ class A { + int h; + A() { i=10; j=20; } + virtual void f1() { printf("i=%d j=%d\n",i,j); } +- friend virtual void f2() { printf("i=%d j=%d\n",i,j); } // { dg-error "9:virtual functions cannot be friends" } ++ friend virtual void f2() { printf("i=%d j=%d\n",i,j); } // { dg-error "16:virtual functions cannot be friends" } + }; + + class B : public A { + public: + virtual void f1() { printf("i=%d j=%d\n",i,j); }// { dg-error "" } member.*// ERROR - member.* +- friend virtual void f2() { printf("i=%d j=%d\n",i,j); } // { dg-error "9:virtual functions cannot be friends" } ++ friend virtual void f2() { printf("i=%d j=%d\n",i,j); } // { dg-error "16:virtual functions cannot be friends" } + // { dg-error "private" "" { target *-*-* } .-1 } + }; + +diff --git a/gcc/testsuite/g++.old-deja/g++.pt/overload2.C b/gcc/testsuite/g++.old-deja/g++.pt/overload2.C +--- a/gcc/testsuite/g++.old-deja/g++.pt/overload2.C 2020-07-22 23:35:18.072392572 -0700 ++++ b/gcc/testsuite/g++.old-deja/g++.pt/overload2.C 2021-12-25 01:20:53.491636427 -0800 +@@ -12,5 +12,5 @@ int + main() + { + C c; +- char* p = Z(c.O); //{ dg-error "13:'Z' was not declared" } ambiguous c.O ++ char* p = Z(c.O); //{ dg-error "29:'Z' was not declared" } ambiguous c.O + } +diff --git a/gcc/testsuite/g++.old-deja/g++.robertl/eb109.C b/gcc/testsuite/g++.old-deja/g++.robertl/eb109.C +--- a/gcc/testsuite/g++.old-deja/g++.robertl/eb109.C 2020-07-22 23:35:18.076392617 -0700 ++++ b/gcc/testsuite/g++.old-deja/g++.robertl/eb109.C 2021-12-25 01:20:53.491636427 -0800 +@@ -48,8 +48,8 @@ ostream& operator<<(ostream& os, Graph::Successor::iterator +- startN = G[i].second.begin(), // { dg-error "14:no match" } no index operator +- endN = G[i].second.end(); // { dg-error "14:no match" } no index operator ++ startN = G[i].second.begin(), // { dg-error "21:no match" } no index operator ++ endN = G[i].second.end(); // { dg-error "21:no match" } no index operator + + while(startN != endN) + { +diff --git a/gcc/tree-diagnostic-path.cc b/gcc/tree-diagnostic-path.cc +--- a/gcc/tree-diagnostic-path.cc 2020-07-22 23:35:18.628398698 -0700 ++++ b/gcc/tree-diagnostic-path.cc 2021-12-25 01:20:53.491636427 -0800 +@@ -493,7 +493,7 @@ default_tree_diagnostic_path_printer (di + doesn't have access to trees (for m_fndecl). */ + + json::value * +-default_tree_make_json_for_path (diagnostic_context *, ++default_tree_make_json_for_path (diagnostic_context *context, + const diagnostic_path *path) + { + json::array *path_array = new json::array (); +@@ -504,7 +504,8 @@ default_tree_make_json_for_path (diagnos + json::object *event_obj = new json::object (); + if (event.get_location ()) + event_obj->set ("location", +- json_from_expanded_location (event.get_location ())); ++ json_from_expanded_location (context, ++ event.get_location ())); + label_text event_text (event.get_desc (false)); + event_obj->set ("description", new json::string (event_text.m_buffer)); + event_text.maybe_free (); +diff --git a/libcpp/charset.c b/libcpp/charset.c +--- a/libcpp/charset.c 2020-07-22 23:35:18.712399623 -0700 ++++ b/libcpp/charset.c 2021-12-25 01:20:53.491636427 -0800 +@@ -2276,49 +2276,90 @@ cpp_string_location_reader::get_next () + return result; + } + +-/* Helper for cpp_byte_column_to_display_column and its inverse. Given a +- pointer to a UTF-8-encoded character, compute its display width. *INBUFP +- points on entry to the start of the UTF-8 encoding of the character, and +- is updated to point just after the last byte of the encoding. *INBYTESLEFTP +- contains on entry the remaining size of the buffer into which *INBUFP +- points, and this is also updated accordingly. If *INBUFP does not ++cpp_display_width_computation:: ++cpp_display_width_computation (const char *data, int data_length, int tabstop) : ++ m_begin (data), ++ m_next (m_begin), ++ m_bytes_left (data_length), ++ m_tabstop (tabstop), ++ m_display_cols (0) ++{ ++ gcc_assert (m_tabstop > 0); ++} ++ ++ ++/* The main implementation function for class cpp_display_width_computation. ++ m_next points on entry to the start of the UTF-8 encoding of the next ++ character, and is updated to point just after the last byte of the encoding. ++ m_bytes_left contains on entry the remaining size of the buffer into which ++ m_next points, and this is also updated accordingly. If m_next does not + point to a valid UTF-8-encoded sequence, then it will be treated as a single +- byte with display width 1. */ ++ byte with display width 1. m_cur_display_col is the current display column, ++ relative to which tab stops should be expanded. Returns the display width of ++ the codepoint just processed. */ + +-static inline int +-compute_next_display_width (const uchar **inbufp, size_t *inbytesleftp) ++int ++cpp_display_width_computation::process_next_codepoint () + { + cppchar_t c; +- if (one_utf8_to_cppchar (inbufp, inbytesleftp, &c) != 0) ++ int next_width; ++ ++ if (*m_next == '\t') ++ { ++ ++m_next; ++ --m_bytes_left; ++ next_width = m_tabstop - (m_display_cols % m_tabstop); ++ } ++ else if (one_utf8_to_cppchar ((const uchar **) &m_next, &m_bytes_left, &c) ++ != 0) + { + /* Input is not convertible to UTF-8. This could be fine, e.g. in a + string literal, so don't complain. Just treat it as if it has a width + of one. */ +- ++*inbufp; +- --*inbytesleftp; +- return 1; ++ ++m_next; ++ --m_bytes_left; ++ next_width = 1; ++ } ++ else ++ { ++ /* one_utf8_to_cppchar() has updated m_next and m_bytes_left for us. */ ++ next_width = cpp_wcwidth (c); + } + +- /* one_utf8_to_cppchar() has updated inbufp and inbytesleftp for us. */ +- return cpp_wcwidth (c); ++ m_display_cols += next_width; ++ return next_width; ++} ++ ++/* Utility to advance the byte stream by the minimum amount needed to consume ++ N display columns. Returns the number of display columns that were ++ actually skipped. This could be less than N, if there was not enough data, ++ or more than N, if the last character to be skipped had a sufficiently large ++ display width. */ ++int ++cpp_display_width_computation::advance_display_cols (int n) ++{ ++ const int start = m_display_cols; ++ const int target = start + n; ++ while (m_display_cols < target && !done ()) ++ process_next_codepoint (); ++ return m_display_cols - start; + } + + /* For the string of length DATA_LENGTH bytes that begins at DATA, compute + how many display columns are occupied by the first COLUMN bytes. COLUMN + may exceed DATA_LENGTH, in which case the phantom bytes at the end are +- treated as if they have display width 1. */ ++ treated as if they have display width 1. Tabs are expanded to the next tab ++ stop, relative to the start of DATA. */ + + int + cpp_byte_column_to_display_column (const char *data, int data_length, +- int column) ++ int column, int tabstop) + { +- int display_col = 0; +- const uchar *udata = (const uchar *) data; + const int offset = MAX (0, column - data_length); +- size_t inbytesleft = column - offset; +- while (inbytesleft) +- display_col += compute_next_display_width (&udata, &inbytesleft); +- return display_col + offset; ++ cpp_display_width_computation dw (data, column - offset, tabstop); ++ while (!dw.done ()) ++ dw.process_next_codepoint (); ++ return dw.display_cols_processed () + offset; + } + + /* For the string of length DATA_LENGTH bytes that begins at DATA, compute +@@ -2328,14 +2369,11 @@ cpp_byte_column_to_display_column (const + + int + cpp_display_column_to_byte_column (const char *data, int data_length, +- int display_col) ++ int display_col, int tabstop) + { +- int column = 0; +- const uchar *udata = (const uchar *) data; +- size_t inbytesleft = data_length; +- while (column < display_col && inbytesleft) +- column += compute_next_display_width (&udata, &inbytesleft); +- return data_length - inbytesleft + MAX (0, display_col - column); ++ cpp_display_width_computation dw (data, data_length, tabstop); ++ const int avail_display = dw.advance_display_cols (display_col); ++ return dw.bytes_processed () + MAX (0, display_col - avail_display); + } + + /* Our own version of wcwidth(). We don't use the actual wcwidth() in glibc, +diff --git a/libcpp/include/cpplib.h b/libcpp/include/cpplib.h +--- a/libcpp/include/cpplib.h 2020-07-22 23:35:18.712399623 -0700 ++++ b/libcpp/include/cpplib.h 2021-12-25 01:20:53.491636427 -0800 +@@ -312,9 +312,6 @@ enum cpp_normalize_level { + carries all the options visible to the command line. */ + struct cpp_options + { +- /* Characters between tab stops. */ +- unsigned int tabstop; +- + /* The language we're preprocessing. */ + enum c_lang lang; + +@@ -1322,14 +1319,43 @@ extern const char * cpp_get_userdef_suff + (const cpp_token *); + + /* In charset.c */ ++ ++/* A class to manage the state while converting a UTF-8 sequence to cppchar_t ++ and computing the display width one character at a time. */ ++class cpp_display_width_computation { ++ public: ++ cpp_display_width_computation (const char *data, int data_length, ++ int tabstop); ++ const char *next_byte () const { return m_next; } ++ int bytes_processed () const { return m_next - m_begin; } ++ int bytes_left () const { return m_bytes_left; } ++ bool done () const { return !bytes_left (); } ++ int display_cols_processed () const { return m_display_cols; } ++ ++ int process_next_codepoint (); ++ int advance_display_cols (int n); ++ ++ private: ++ const char *const m_begin; ++ const char *m_next; ++ size_t m_bytes_left; ++ const int m_tabstop; ++ int m_display_cols; ++}; ++ ++/* Convenience functions that are simple use cases for class ++ cpp_display_width_computation. Tab characters will be expanded to spaces ++ as determined by TABSTOP. */ + int cpp_byte_column_to_display_column (const char *data, int data_length, +- int column); +-inline int cpp_display_width (const char *data, int data_length) ++ int column, int tabstop); ++inline int cpp_display_width (const char *data, int data_length, ++ int tabstop) + { +- return cpp_byte_column_to_display_column (data, data_length, data_length); ++ return cpp_byte_column_to_display_column (data, data_length, data_length, ++ tabstop); + } + int cpp_display_column_to_byte_column (const char *data, int data_length, +- int display_col); ++ int display_col, int tabstop); + int cpp_wcwidth (cppchar_t c); + + #endif /* ! LIBCPP_CPPLIB_H */ +diff --git a/libcpp/init.c b/libcpp/init.c +--- a/libcpp/init.c 2020-07-22 23:35:18.712399623 -0700 ++++ b/libcpp/init.c 2021-12-25 01:20:53.491636427 -0800 +@@ -190,7 +190,6 @@ cpp_create_reader (enum c_lang lang, cpp + CPP_OPTION (pfile, discard_comments) = 1; + CPP_OPTION (pfile, discard_comments_in_macro_exp) = 1; + CPP_OPTION (pfile, max_include_depth) = 200; +- CPP_OPTION (pfile, tabstop) = 8; + CPP_OPTION (pfile, operator_names) = 1; + CPP_OPTION (pfile, warn_trigraphs) = 2; + CPP_OPTION (pfile, warn_endif_labels) = 1; diff --git a/meta/recipes-devtools/gcc/gcc/0002-CVE-2021-42574.patch b/meta/recipes-devtools/gcc/gcc/0002-CVE-2021-42574.patch new file mode 100644 index 0000000000..5b1896ed69 --- /dev/null +++ b/meta/recipes-devtools/gcc/gcc/0002-CVE-2021-42574.patch @@ -0,0 +1,2270 @@ +From bd5e882cf6e0def3dd1bc106075d59a303fe0d1e Mon Sep 17 00:00:00 2001 +From: David Malcolm +Date: Mon, 18 Oct 2021 18:55:31 -0400 +Subject: [PATCH] diagnostics: escape non-ASCII source bytes for certain + diagnostics +MIME-Version: 1.0 +Content-Type: text/plain; charset=utf8 +Content-Transfer-Encoding: 8bit + +This patch adds support to GCC's diagnostic subsystem for escaping certain +bytes and Unicode characters when quoting source code. + +Specifically, this patch adds a new flag rich_location::m_escape_on_output +which is a hint from a diagnostic that non-ASCII bytes in the pertinent +lines of the user's source code should be escaped when printed. + +The patch sets this for the following diagnostics: +- when complaining about stray bytes in the program (when these +are non-printable) +- when complaining about "null character(s) ignored"); +- for -Wnormalized= (and generate source ranges for such warnings) + +The escaping is controlled by a new option: + -fdiagnostics-escape-format=[unicode|bytes] + +For example, consider a diagnostic involing a source line containing the +string "before" followed by the Unicode character U+03C0 ("GREEK SMALL +LETTER PI", with UTF-8 encoding 0xCF 0x80) followed by the byte 0xBF +(a stray UTF-8 trailing byte), followed by the string "after", where the +diagnostic highlights the U+03C0 character. + +By default, this line will be printed verbatim to the user when +reporting a diagnostic at it, as: + + beforeÏXafter + ^ + +(using X for the stray byte to avoid putting invalid UTF-8 in this +commit message) + +If the diagnostic sets the "escape" flag, it will be printed as: + + beforeafter + ^~~~~~~~ + +with -fdiagnostics-escape-format=unicode (the default), or as: + + before<80>after + ^~~~~~~~ + +if the user supplies -fdiagnostics-escape-format=bytes. + +This only affects how the source is printed; it does not affect +how column numbers that are printed (as per -fdiagnostics-column-unit= +and -fdiagnostics-column-origin=). + +gcc/c-family/ChangeLog: + * c-lex.c (c_lex_with_flags): When complaining about non-printable + CPP_OTHER tokens, set the "escape on output" flag. + +gcc/ChangeLog: + * common.opt (fdiagnostics-escape-format=): New. + (diagnostics_escape_format): New enum. + (DIAGNOSTICS_ESCAPE_FORMAT_UNICODE): New enum value. + (DIAGNOSTICS_ESCAPE_FORMAT_BYTES): Likewise. + * diagnostic-format-json.cc (json_end_diagnostic): Add + "escape-source" attribute. + * diagnostic-show-locus.c + (exploc_with_display_col::exploc_with_display_col): Replace + "tabstop" param with a cpp_char_column_policy and add an "aspect" + param. Use these to compute m_display_col accordingly. + (struct char_display_policy): New struct. + (layout::m_policy): New field. + (layout::m_escape_on_output): New field. + (def_policy): New function. + (make_range): Update for changes to exploc_with_display_col ctor. + (default_print_decoded_ch): New. + (width_per_escaped_byte): New. + (escape_as_bytes_width): New. + (escape_as_bytes_print): New. + (escape_as_unicode_width): New. + (escape_as_unicode_print): New. + (make_policy): New. + (layout::layout): Initialize new fields. Update m_exploc ctor + call for above change to ctor. + (layout::maybe_add_location_range): Update for changes to + exploc_with_display_col ctor. + (layout::calculate_x_offset_display): Update for change to + cpp_display_width. + (layout::print_source_line): Pass policy + to cpp_display_width_computation. Capture cpp_decoded_char when + calling process_next_codepoint. Move printing of source code to + m_policy.m_print_cb. + (line_label::line_label): Pass in policy rather than context. + (layout::print_any_labels): Update for change to line_label ctor. + (get_affected_range): Pass in policy rather than context, updating + calls to location_compute_display_column accordingly. + (get_printed_columns): Likewise, also for cpp_display_width. + (correction::correction): Pass in policy rather than tabstop. + (correction::compute_display_cols): Pass m_policy rather than + m_tabstop to cpp_display_width. + (correction::m_tabstop): Replace with... + (correction::m_policy): ...this. + (line_corrections::line_corrections): Pass in policy rather than + context. + (line_corrections::m_context): Replace with... + (line_corrections::m_policy): ...this. + (line_corrections::add_hint): Update to use m_policy rather than + m_context. + (line_corrections::add_hint): Likewise. + (layout::print_trailing_fixits): Likewise. + (selftest::test_display_widths): New. + (selftest::test_layout_x_offset_display_utf8): Update to use + policy rather than tabstop. + (selftest::test_one_liner_labels_utf8): Add test of escaping + source lines. + (selftest::test_diagnostic_show_locus_one_liner_utf8): Update to + use policy rather than tabstop. + (selftest::test_overlapped_fixit_printing): Likewise. + (selftest::test_overlapped_fixit_printing_utf8): Likewise. + (selftest::test_overlapped_fixit_printing_2): Likewise. + (selftest::test_tab_expansion): Likewise. + (selftest::test_escaping_bytes_1): New. + (selftest::test_escaping_bytes_2): New. + (selftest::diagnostic_show_locus_c_tests): Call the new tests. + * diagnostic.c (diagnostic_initialize): Initialize + context->escape_format. + (convert_column_unit): Update to use default character width policy. + (selftest::test_diagnostic_get_location_text): Likewise. + * diagnostic.h (enum diagnostics_escape_format): New enum. + (diagnostic_context::escape_format): New field. + * doc/invoke.texi (-fdiagnostics-escape-format=): New option. + (-fdiagnostics-format=): Add "escape-source" attribute to examples + of JSON output, and document it. + * input.c (location_compute_display_column): Pass in "policy" + rather than "tabstop", passing to + cpp_byte_column_to_display_column. + (selftest::test_cpp_utf8): Update to use cpp_char_column_policy. + * input.h (class cpp_char_column_policy): New forward decl. + (location_compute_display_column): Pass in "policy" rather than + "tabstop". + * opts.c (common_handle_option): Handle + OPT_fdiagnostics_escape_format_. + * selftest.c (temp_source_file::temp_source_file): New ctor + overload taking a size_t. + * selftest.h (temp_source_file::temp_source_file): Likewise. + +gcc/testsuite/ChangeLog: + * c-c++-common/diagnostic-format-json-1.c: Add regexp to consume + "escape-source" attribute. + * c-c++-common/diagnostic-format-json-2.c: Likewise. + * c-c++-common/diagnostic-format-json-3.c: Likewise. + * c-c++-common/diagnostic-format-json-4.c: Likewise, twice. + * c-c++-common/diagnostic-format-json-5.c: Likewise. + * gcc.dg/cpp/warn-normalized-4-bytes.c: New test. + * gcc.dg/cpp/warn-normalized-4-unicode.c: New test. + * gcc.dg/encoding-issues-bytes.c: New test. + * gcc.dg/encoding-issues-unicode.c: New test. + * gfortran.dg/diagnostic-format-json-1.F90: Add regexp to consume + "escape-source" attribute. + * gfortran.dg/diagnostic-format-json-2.F90: Likewise. + * gfortran.dg/diagnostic-format-json-3.F90: Likewise. + +libcpp/ChangeLog: + * charset.c (convert_escape): Use encoding_rich_location when + complaining about nonprintable unknown escape sequences. + (cpp_display_width_computation::::cpp_display_width_computation): + Pass in policy rather than tabstop. + (cpp_display_width_computation::process_next_codepoint): Add "out" + param and populate *out if non-NULL. + (cpp_display_width_computation::advance_display_cols): Pass NULL + to process_next_codepoint. + (cpp_byte_column_to_display_column): Pass in policy rather than + tabstop. Pass NULL to process_next_codepoint. + (cpp_display_column_to_byte_column): Pass in policy rather than + tabstop. + * errors.c (cpp_diagnostic_get_current_location): New function, + splitting out the logic from... + (cpp_diagnostic): ...here. + (cpp_warning_at): New function. + (cpp_pedwarning_at): New function. + * include/cpplib.h (cpp_warning_at): New decl for rich_location. + (cpp_pedwarning_at): Likewise. + (struct cpp_decoded_char): New. + (struct cpp_char_column_policy): New. + (cpp_display_width_computation::cpp_display_width_computation): + Replace "tabstop" param with "policy". + (cpp_display_width_computation::process_next_codepoint): Add "out" + param. + (cpp_display_width_computation::m_tabstop): Replace with... + (cpp_display_width_computation::m_policy): ...this. + (cpp_byte_column_to_display_column): Replace "tabstop" param with + "policy". + (cpp_display_width): Likewise. + (cpp_display_column_to_byte_column): Likewise. + * include/line-map.h (rich_location::escape_on_output_p): New. + (rich_location::set_escape_on_output): New. + (rich_location::m_escape_on_output): New. + * internal.h (cpp_diagnostic_get_current_location): New decl. + (class encoding_rich_location): New. + * lex.c (skip_whitespace): Use encoding_rich_location when + complaining about null characters. + (warn_about_normalization): Generate a source range when + complaining about improperly normalized tokens, rather than just a + point, and use encoding_rich_location so that the source code + is escaped on printing. + * line-map.c (rich_location::rich_location): Initialize + m_escape_on_output. + +Signed-off-by: David Malcolm + +CVE: CVE-2021-42574 +Upstream-Status: Backport [https://gcc.gnu.org/git/gitweb.cgi?p=gcc.git;h=bd5e882cf6e0def3dd1bc106075d59a303fe0d1e] +Signed-off-by: Pgowda + +--- + gcc/c-family/c-lex.c | 6 +- + gcc/common.opt | 13 + + gcc/diagnostic-format-json.cc | 3 + + gcc/diagnostic-show-locus.c | 580 +++++++++++++++--- + gcc/diagnostic.c | 10 +- + gcc/diagnostic.h | 18 + + gcc/doc/invoke.texi | 43 +- + gcc/input.c | 62 +- + gcc/input.h | 7 +- + gcc/opts.c | 4 + + gcc/selftest.c | 15 + + gcc/selftest.h | 2 + + .../c-c++-common/diagnostic-format-json-1.c | 1 + + .../c-c++-common/diagnostic-format-json-2.c | 1 + + .../c-c++-common/diagnostic-format-json-3.c | 1 + + .../c-c++-common/diagnostic-format-json-4.c | 2 + + .../c-c++-common/diagnostic-format-json-5.c | 1 + + .../gcc.dg/cpp/warn-normalized-4-bytes.c | 21 + + .../gcc.dg/cpp/warn-normalized-4-unicode.c | 19 + + gcc/testsuite/gcc.dg/encoding-issues-bytes.c | Bin 0 -> 595 bytes + .../gcc.dg/encoding-issues-unicode.c | Bin 0 -> 613 bytes + .../gfortran.dg/diagnostic-format-json-1.F90 | 1 + + .../gfortran.dg/diagnostic-format-json-2.F90 | 1 + + .../gfortran.dg/diagnostic-format-json-3.F90 | 1 + + libcpp/charset.c | 63 +- + libcpp/errors.c | 82 ++- + libcpp/include/cpplib.h | 76 ++- + libcpp/include/line-map.h | 13 + + libcpp/internal.h | 23 + + libcpp/lex.c | 38 +- + libcpp/line-map.c | 3 +- + 31 files changed, 942 insertions(+), 168 deletions(-) + create mode 100644 gcc/testsuite/gcc.dg/cpp/warn-normalized-4-bytes.c + create mode 100644 gcc/testsuite/gcc.dg/cpp/warn-normalized-4-unicode.c + create mode 100644 gcc/testsuite/gcc.dg/encoding-issues-bytes.c + create mode 100644 gcc/testsuite/gcc.dg/encoding-issues-unicode.c + +diff --git a/gcc/c-family/c-lex.c b/gcc/c-family/c-lex.c +--- a/gcc/c-family/c-lex.c 2020-07-22 23:35:17.296384022 -0700 ++++ b/gcc/c-family/c-lex.c 2021-12-25 01:30:50.669689023 -0800 +@@ -587,7 +587,11 @@ c_lex_with_flags (tree *value, location_ + else if (ISGRAPH (c)) + error_at (*loc, "stray %qc in program", (int) c); + else +- error_at (*loc, "stray %<\\%o%> in program", (int) c); ++ { ++ rich_location rich_loc (line_table, *loc); ++ rich_loc.set_escape_on_output (true); ++ error_at (&rich_loc, "stray %<\\%o%> in program", (int) c); ++ } + } + goto retry; + +diff --git a/gcc/common.opt b/gcc/common.opt +--- a/gcc/common.opt 2021-12-25 01:29:12.915317374 -0800 ++++ b/gcc/common.opt 2021-12-25 01:30:50.669689023 -0800 +@@ -1337,6 +1337,10 @@ fdiagnostics-format= + Common Joined RejectNegative Enum(diagnostics_output_format) + -fdiagnostics-format=[text|json] Select output format. + ++fdiagnostics-escape-format= ++Common Joined RejectNegative Enum(diagnostics_escape_format) ++-fdiagnostics-escape-format=[unicode|bytes] Select how to escape non-printable-ASCII bytes in the source for diagnostics that suggest it. ++ + ; Required for these enum values. + SourceInclude + diagnostic.h +@@ -1351,6 +1355,15 @@ EnumValue + Enum(diagnostics_column_unit) String(byte) Value(DIAGNOSTICS_COLUMN_UNIT_BYTE) + + Enum ++Name(diagnostics_escape_format) Type(int) ++ ++EnumValue ++Enum(diagnostics_escape_format) String(unicode) Value(DIAGNOSTICS_ESCAPE_FORMAT_UNICODE) ++ ++EnumValue ++Enum(diagnostics_escape_format) String(bytes) Value(DIAGNOSTICS_ESCAPE_FORMAT_BYTES) ++ ++Enum + Name(diagnostics_output_format) Type(int) + + EnumValue +diff --git a/gcc/diagnostic.c b/gcc/diagnostic.c +--- a/gcc/diagnostic.c 2021-12-25 01:29:12.915317374 -0800 ++++ b/gcc/diagnostic.c 2021-12-25 01:30:50.669689023 -0800 +@@ -223,6 +223,7 @@ diagnostic_initialize (diagnostic_contex + context->column_unit = DIAGNOSTICS_COLUMN_UNIT_DISPLAY; + context->column_origin = 1; + context->tabstop = 8; ++ context->escape_format = DIAGNOSTICS_ESCAPE_FORMAT_UNICODE; + context->edit_context_ptr = NULL; + context->diagnostic_group_nesting_depth = 0; + context->diagnostic_group_emission_count = 0; +@@ -2152,8 +2153,8 @@ test_diagnostic_get_location_text () + const char *const content = "smile \xf0\x9f\x98\x82\n"; + const int line_bytes = strlen (content) - 1; + const int def_tabstop = 8; +- const int display_width = cpp_display_width (content, line_bytes, +- def_tabstop); ++ const cpp_char_column_policy policy (def_tabstop, cpp_wcwidth); ++ const int display_width = cpp_display_width (content, line_bytes, policy); + ASSERT_EQ (line_bytes - 2, display_width); + temp_source_file tmp (SELFTEST_LOCATION, ".c", content); + const char *const fname = tmp.get_filename (); +diff --git a/gcc/diagnostic-format-json.cc b/gcc/diagnostic-format-json.cc +--- a/gcc/diagnostic-format-json.cc 2021-12-25 01:29:12.915317374 -0800 ++++ b/gcc/diagnostic-format-json.cc 2021-12-25 01:30:50.669689023 -0800 +@@ -264,6 +264,9 @@ json_end_diagnostic (diagnostic_context + json::value *path_value = context->make_json_for_path (context, path); + diag_obj->set ("path", path_value); + } ++ ++ diag_obj->set ("escape-source", ++ new json::literal (richloc->escape_on_output_p ())); + } + + /* No-op implementation of "begin_group_cb" for JSON output. */ +diff --git a/gcc/diagnostic.h b/gcc/diagnostic.h +--- a/gcc/diagnostic.h 2021-12-25 01:29:12.919317307 -0800 ++++ b/gcc/diagnostic.h 2021-12-25 01:30:50.669689023 -0800 +@@ -38,6 +38,20 @@ enum diagnostics_column_unit + DIAGNOSTICS_COLUMN_UNIT_BYTE + }; + ++/* An enum for controlling how to print non-ASCII characters/bytes when ++ a diagnostic suggests escaping the source code on output. */ ++ ++enum diagnostics_escape_format ++{ ++ /* Escape non-ASCII Unicode characters in the form and ++ non-UTF-8 bytes in the form . */ ++ DIAGNOSTICS_ESCAPE_FORMAT_UNICODE, ++ ++ /* Escape non-ASCII bytes in the form (thus showing the underlying ++ encoding of non-ASCII Unicode characters). */ ++ DIAGNOSTICS_ESCAPE_FORMAT_BYTES ++}; ++ + /* Enum for overriding the standard output format. */ + + enum diagnostics_output_format +@@ -303,6 +317,10 @@ struct diagnostic_context + /* The size of the tabstop for tab expansion. */ + int tabstop; + ++ /* How should non-ASCII/non-printable bytes be escaped when ++ a diagnostic suggests escaping the source code on output. */ ++ enum diagnostics_escape_format escape_format; ++ + /* If non-NULL, an edit_context to which fix-it hints should be + applied, for generating patches. */ + edit_context *edit_context_ptr; +diff --git a/gcc/diagnostic-show-locus.c b/gcc/diagnostic-show-locus.c +--- a/gcc/diagnostic-show-locus.c 2021-12-25 01:29:12.919317307 -0800 ++++ b/gcc/diagnostic-show-locus.c 2021-12-25 01:30:50.673688956 -0800 +@@ -175,10 +175,26 @@ enum column_unit { + class exploc_with_display_col : public expanded_location + { + public: +- exploc_with_display_col (const expanded_location &exploc, int tabstop) +- : expanded_location (exploc), +- m_display_col (location_compute_display_column (exploc, tabstop)) +- {} ++ exploc_with_display_col (const expanded_location &exploc, ++ const cpp_char_column_policy &policy, ++ enum location_aspect aspect) ++ : expanded_location (exploc), ++ m_display_col (location_compute_display_column (exploc, policy)) ++ { ++ if (exploc.column > 0) ++ { ++ /* m_display_col is now the final column of the byte. ++ If escaping has happened, we may want the first column instead. */ ++ if (aspect != LOCATION_ASPECT_FINISH) ++ { ++ expanded_location prev_exploc (exploc); ++ prev_exploc.column--; ++ int prev_display_col ++ = (location_compute_display_column (prev_exploc, policy)); ++ m_display_col = prev_display_col + 1; ++ } ++ } ++ } + + int m_display_col; + }; +@@ -313,6 +329,31 @@ test_line_span () + + #endif /* #if CHECKING_P */ + ++/* A bundle of information containing how to print unicode ++ characters and bytes when quoting source code. ++ ++ Provides a unified place to support escaping some subset ++ of characters to some format. ++ ++ Extends char_column_policy; printing is split out to avoid ++ libcpp having to know about pretty_printer. */ ++ ++struct char_display_policy : public cpp_char_column_policy ++{ ++ public: ++ char_display_policy (int tabstop, ++ int (*width_cb) (cppchar_t c), ++ void (*print_cb) (pretty_printer *pp, ++ const cpp_decoded_char &cp)) ++ : cpp_char_column_policy (tabstop, width_cb), ++ m_print_cb (print_cb) ++ { ++ } ++ ++ void (*m_print_cb) (pretty_printer *pp, ++ const cpp_decoded_char &cp); ++}; ++ + /* A class to control the overall layout when printing a diagnostic. + + The layout is determined within the constructor. +@@ -345,6 +386,8 @@ class layout + + void print_line (linenum_type row); + ++ void on_bad_codepoint (const char *ptr, cppchar_t ch, size_t ch_sz); ++ + private: + bool will_show_line_p (linenum_type row) const; + void print_leading_fixits (linenum_type row); +@@ -386,6 +429,7 @@ class layout + private: + diagnostic_context *m_context; + pretty_printer *m_pp; ++ char_display_policy m_policy; + location_t m_primary_loc; + exploc_with_display_col m_exploc; + colorizer m_colorizer; +@@ -398,6 +442,7 @@ class layout + auto_vec m_line_spans; + int m_linenum_width; + int m_x_offset_display; ++ bool m_escape_on_output; + }; + + /* Implementation of "class colorizer". */ +@@ -646,6 +691,11 @@ layout_range::intersects_line_p (linenum + /* Default for when we don't care what the tab expansion is set to. */ + static const int def_tabstop = 8; + ++static cpp_char_column_policy def_policy () ++{ ++ return cpp_char_column_policy (8, cpp_wcwidth); ++} ++ + /* Create some expanded locations for testing layout_range. The filename + member of the explocs is set to the empty string. This member will only be + inspected by the calls to location_compute_display_column() made from the +@@ -662,10 +712,13 @@ make_range (int start_line, int start_co + = {"", start_line, start_col, NULL, false}; + const expanded_location finish_exploc + = {"", end_line, end_col, NULL, false}; +- return layout_range (exploc_with_display_col (start_exploc, def_tabstop), +- exploc_with_display_col (finish_exploc, def_tabstop), ++ return layout_range (exploc_with_display_col (start_exploc, def_policy (), ++ LOCATION_ASPECT_START), ++ exploc_with_display_col (finish_exploc, def_policy (), ++ LOCATION_ASPECT_FINISH), + SHOW_RANGE_WITHOUT_CARET, +- exploc_with_display_col (start_exploc, def_tabstop), ++ exploc_with_display_col (start_exploc, def_policy (), ++ LOCATION_ASPECT_CARET), + 0, NULL); + } + +@@ -950,6 +1003,164 @@ fixit_cmp (const void *p_a, const void * + return hint_a->get_start_loc () - hint_b->get_start_loc (); + } + ++/* Callbacks for use when not escaping the source. */ ++ ++/* The default callback for char_column_policy::m_width_cb is cpp_wcwidth. */ ++ ++/* Callback for char_display_policy::m_print_cb for printing source chars ++ when not escaping the source. */ ++ ++static void ++default_print_decoded_ch (pretty_printer *pp, ++ const cpp_decoded_char &decoded_ch) ++{ ++ for (const char *ptr = decoded_ch.m_start_byte; ++ ptr != decoded_ch.m_next_byte; ptr++) ++ { ++ if (*ptr == '\0' || *ptr == '\r') ++ { ++ pp_space (pp); ++ continue; ++ } ++ ++ pp_character (pp, *ptr); ++ } ++} ++ ++/* Callbacks for use with DIAGNOSTICS_ESCAPE_FORMAT_BYTES. */ ++ ++static const int width_per_escaped_byte = 4; ++ ++/* Callback for char_column_policy::m_width_cb for determining the ++ display width when escaping with DIAGNOSTICS_ESCAPE_FORMAT_BYTES. */ ++ ++static int ++escape_as_bytes_width (cppchar_t ch) ++{ ++ if (ch < 0x80 && ISPRINT (ch)) ++ return cpp_wcwidth (ch); ++ else ++ { ++ if (ch <= 0x7F) return 1 * width_per_escaped_byte; ++ if (ch <= 0x7FF) return 2 * width_per_escaped_byte; ++ if (ch <= 0xFFFF) return 3 * width_per_escaped_byte; ++ return 4 * width_per_escaped_byte; ++ } ++} ++ ++/* Callback for char_display_policy::m_print_cb for printing source chars ++ when escaping with DIAGNOSTICS_ESCAPE_FORMAT_BYTES. */ ++ ++static void ++escape_as_bytes_print (pretty_printer *pp, ++ const cpp_decoded_char &decoded_ch) ++{ ++ if (!decoded_ch.m_valid_ch) ++ { ++ for (const char *iter = decoded_ch.m_start_byte; ++ iter != decoded_ch.m_next_byte; ++iter) ++ { ++ char buf[16]; ++ sprintf (buf, "<%02x>", (unsigned char)*iter); ++ pp_string (pp, buf); ++ } ++ return; ++ } ++ ++ cppchar_t ch = decoded_ch.m_ch; ++ if (ch < 0x80 && ISPRINT (ch)) ++ pp_character (pp, ch); ++ else ++ { ++ for (const char *iter = decoded_ch.m_start_byte; ++ iter < decoded_ch.m_next_byte; ++iter) ++ { ++ char buf[16]; ++ sprintf (buf, "<%02x>", (unsigned char)*iter); ++ pp_string (pp, buf); ++ } ++ } ++} ++ ++/* Callbacks for use with DIAGNOSTICS_ESCAPE_FORMAT_UNICODE. */ ++ ++/* Callback for char_column_policy::m_width_cb for determining the ++ display width when escaping with DIAGNOSTICS_ESCAPE_FORMAT_UNICODE. */ ++ ++static int ++escape_as_unicode_width (cppchar_t ch) ++{ ++ if (ch < 0x80 && ISPRINT (ch)) ++ return cpp_wcwidth (ch); ++ else ++ { ++ // Width of "" ++ if (ch > 0xfffff) ++ return 10; ++ else if (ch > 0xffff) ++ return 9; ++ else ++ return 8; ++ } ++} ++ ++/* Callback for char_display_policy::m_print_cb for printing source chars ++ when escaping with DIAGNOSTICS_ESCAPE_FORMAT_UNICODE. */ ++ ++static void ++escape_as_unicode_print (pretty_printer *pp, ++ const cpp_decoded_char &decoded_ch) ++{ ++ if (!decoded_ch.m_valid_ch) ++ { ++ escape_as_bytes_print (pp, decoded_ch); ++ return; ++ } ++ ++ cppchar_t ch = decoded_ch.m_ch; ++ if (ch < 0x80 && ISPRINT (ch)) ++ pp_character (pp, ch); ++ else ++ { ++ char buf[16]; ++ sprintf (buf, "", ch); ++ pp_string (pp, buf); ++ } ++} ++ ++/* Populate a char_display_policy based on DC and RICHLOC. */ ++ ++static char_display_policy ++make_policy (const diagnostic_context &dc, ++ const rich_location &richloc) ++{ ++ /* The default is to not escape non-ASCII bytes. */ ++ char_display_policy result ++ (dc.tabstop, cpp_wcwidth, default_print_decoded_ch); ++ ++ /* If the diagnostic suggests escaping non-ASCII bytes, then ++ use policy from user-supplied options. */ ++ if (richloc.escape_on_output_p ()) ++ { ++ result.m_undecoded_byte_width = width_per_escaped_byte; ++ switch (dc.escape_format) ++ { ++ default: ++ gcc_unreachable (); ++ case DIAGNOSTICS_ESCAPE_FORMAT_UNICODE: ++ result.m_width_cb = escape_as_unicode_width; ++ result.m_print_cb = escape_as_unicode_print; ++ break; ++ case DIAGNOSTICS_ESCAPE_FORMAT_BYTES: ++ result.m_width_cb = escape_as_bytes_width; ++ result.m_print_cb = escape_as_bytes_print; ++ break; ++ } ++ } ++ ++ return result; ++} ++ + /* Implementation of class layout. */ + + /* Constructor for class layout. +@@ -966,8 +1177,10 @@ layout::layout (diagnostic_context * con + diagnostic_t diagnostic_kind) + : m_context (context), + m_pp (context->printer), ++ m_policy (make_policy (*context, *richloc)), + m_primary_loc (richloc->get_range (0)->m_loc), +- m_exploc (richloc->get_expanded_location (0), context->tabstop), ++ m_exploc (richloc->get_expanded_location (0), m_policy, ++ LOCATION_ASPECT_CARET), + m_colorizer (context, diagnostic_kind), + m_colorize_source_p (context->colorize_source_p), + m_show_labels_p (context->show_labels_p), +@@ -977,7 +1190,8 @@ layout::layout (diagnostic_context * con + m_fixit_hints (richloc->get_num_fixit_hints ()), + m_line_spans (1 + richloc->get_num_locations ()), + m_linenum_width (0), +- m_x_offset_display (0) ++ m_x_offset_display (0), ++ m_escape_on_output (richloc->escape_on_output_p ()) + { + for (unsigned int idx = 0; idx < richloc->get_num_locations (); idx++) + { +@@ -1063,10 +1277,13 @@ layout::maybe_add_location_range (const + + /* Everything is now known to be in the correct source file, + but it may require further sanitization. */ +- layout_range ri (exploc_with_display_col (start, m_context->tabstop), +- exploc_with_display_col (finish, m_context->tabstop), ++ layout_range ri (exploc_with_display_col (start, m_policy, ++ LOCATION_ASPECT_START), ++ exploc_with_display_col (finish, m_policy, ++ LOCATION_ASPECT_FINISH), + loc_range->m_range_display_kind, +- exploc_with_display_col (caret, m_context->tabstop), ++ exploc_with_display_col (caret, m_policy, ++ LOCATION_ASPECT_CARET), + original_idx, loc_range->m_label); + + /* If we have a range that finishes before it starts (perhaps +@@ -1400,7 +1617,7 @@ layout::calculate_x_offset_display () + = get_line_bytes_without_trailing_whitespace (line.get_buffer (), + line.length ()); + int eol_display_column +- = cpp_display_width (line.get_buffer (), line_bytes, m_context->tabstop); ++ = cpp_display_width (line.get_buffer (), line_bytes, m_policy); + if (caret_display_column > eol_display_column + || !caret_display_column) + { +@@ -1479,7 +1696,7 @@ layout::print_source_line (linenum_type + /* This object helps to keep track of which display column we are at, which is + necessary for computing the line bounds in display units, for doing + tab expansion, and for implementing m_x_offset_display. */ +- cpp_display_width_computation dw (line, line_bytes, m_context->tabstop); ++ cpp_display_width_computation dw (line, line_bytes, m_policy); + + /* Skip the first m_x_offset_display display columns. In case the leading + portion that will be skipped ends with a character with wcwidth > 1, then +@@ -1527,7 +1744,8 @@ layout::print_source_line (linenum_type + tabs and replacing some control bytes with spaces as necessary. */ + const char *c = dw.next_byte (); + const int start_disp_col = dw.display_cols_processed () + 1; +- const int this_display_width = dw.process_next_codepoint (); ++ cpp_decoded_char cp; ++ const int this_display_width = dw.process_next_codepoint (&cp); + if (*c == '\t') + { + /* The returned display width is the number of spaces into which the +@@ -1536,15 +1754,6 @@ layout::print_source_line (linenum_type + pp_space (m_pp); + continue; + } +- if (*c == '\0' || *c == '\r') +- { +- /* cpp_wcwidth() promises to return 1 for all control bytes, and we +- want to output these as a single space too, so this case is +- actually the same as the '\t' case. */ +- gcc_assert (this_display_width == 1); +- pp_space (m_pp); +- continue; +- } + + /* We have a (possibly multibyte) character to output; update the line + bounds if it is not whitespace. */ +@@ -1556,7 +1765,8 @@ layout::print_source_line (linenum_type + } + + /* Output the character. */ +- while (c != dw.next_byte ()) pp_character (m_pp, *c++); ++ m_policy.m_print_cb (m_pp, cp); ++ c = dw.next_byte (); + } + print_newline (); + return lbounds; +@@ -1655,14 +1865,14 @@ layout::print_annotation_line (linenum_t + class line_label + { + public: +- line_label (diagnostic_context *context, int state_idx, int column, ++ line_label (const cpp_char_column_policy &policy, ++ int state_idx, int column, + label_text text) + : m_state_idx (state_idx), m_column (column), + m_text (text), m_label_line (0), m_has_vbar (true) + { + const int bytes = strlen (text.m_buffer); +- m_display_width +- = cpp_display_width (text.m_buffer, bytes, context->tabstop); ++ m_display_width = cpp_display_width (text.m_buffer, bytes, policy); + } + + /* Sorting is primarily by column, then by state index. */ +@@ -1722,7 +1932,7 @@ layout::print_any_labels (linenum_type r + if (text.m_buffer == NULL) + continue; + +- labels.safe_push (line_label (m_context, i, disp_col, text)); ++ labels.safe_push (line_label (m_policy, i, disp_col, text)); + } + } + +@@ -2002,7 +2212,7 @@ public: + + /* Get the range of bytes or display columns that HINT would affect. */ + static column_range +-get_affected_range (diagnostic_context *context, ++get_affected_range (const cpp_char_column_policy &policy, + const fixit_hint *hint, enum column_unit col_unit) + { + expanded_location exploc_start = expand_location (hint->get_start_loc ()); +@@ -2013,13 +2223,11 @@ get_affected_range (diagnostic_context * + int finish_column; + if (col_unit == CU_DISPLAY_COLS) + { +- start_column +- = location_compute_display_column (exploc_start, context->tabstop); ++ start_column = location_compute_display_column (exploc_start, policy); + if (hint->insertion_p ()) + finish_column = start_column - 1; + else +- finish_column +- = location_compute_display_column (exploc_finish, context->tabstop); ++ finish_column = location_compute_display_column (exploc_finish, policy); + } + else + { +@@ -2032,12 +2240,13 @@ get_affected_range (diagnostic_context * + /* Get the range of display columns that would be printed for HINT. */ + + static column_range +-get_printed_columns (diagnostic_context *context, const fixit_hint *hint) ++get_printed_columns (const cpp_char_column_policy &policy, ++ const fixit_hint *hint) + { + expanded_location exploc = expand_location (hint->get_start_loc ()); +- int start_column = location_compute_display_column (exploc, context->tabstop); ++ int start_column = location_compute_display_column (exploc, policy); + int hint_width = cpp_display_width (hint->get_string (), hint->get_length (), +- context->tabstop); ++ policy); + int final_hint_column = start_column + hint_width - 1; + if (hint->insertion_p ()) + { +@@ -2047,8 +2256,7 @@ get_printed_columns (diagnostic_context + { + exploc = expand_location (hint->get_next_loc ()); + --exploc.column; +- int finish_column +- = location_compute_display_column (exploc, context->tabstop); ++ int finish_column = location_compute_display_column (exploc, policy); + return column_range (start_column, + MAX (finish_column, final_hint_column)); + } +@@ -2066,13 +2274,13 @@ public: + column_range affected_columns, + column_range printed_columns, + const char *new_text, size_t new_text_len, +- int tabstop) ++ const cpp_char_column_policy &policy) + : m_affected_bytes (affected_bytes), + m_affected_columns (affected_columns), + m_printed_columns (printed_columns), + m_text (xstrdup (new_text)), + m_byte_length (new_text_len), +- m_tabstop (tabstop), ++ m_policy (policy), + m_alloc_sz (new_text_len + 1) + { + compute_display_cols (); +@@ -2090,7 +2298,7 @@ public: + + void compute_display_cols () + { +- m_display_cols = cpp_display_width (m_text, m_byte_length, m_tabstop); ++ m_display_cols = cpp_display_width (m_text, m_byte_length, m_policy); + } + + void overwrite (int dst_offset, const char_span &src_span) +@@ -2118,7 +2326,7 @@ public: + char *m_text; + size_t m_byte_length; /* Not including null-terminator. */ + int m_display_cols; +- int m_tabstop; ++ const cpp_char_column_policy &m_policy; + size_t m_alloc_sz; + }; + +@@ -2154,15 +2362,16 @@ correction::ensure_terminated () + class line_corrections + { + public: +- line_corrections (diagnostic_context *context, const char *filename, ++ line_corrections (const char_display_policy &policy, ++ const char *filename, + linenum_type row) +- : m_context (context), m_filename (filename), m_row (row) ++ : m_policy (policy), m_filename (filename), m_row (row) + {} + ~line_corrections (); + + void add_hint (const fixit_hint *hint); + +- diagnostic_context *m_context; ++ const char_display_policy &m_policy; + const char *m_filename; + linenum_type m_row; + auto_vec m_corrections; +@@ -2208,10 +2417,10 @@ source_line::source_line (const char *fi + void + line_corrections::add_hint (const fixit_hint *hint) + { +- column_range affected_bytes = get_affected_range (m_context, hint, CU_BYTES); +- column_range affected_columns = get_affected_range (m_context, hint, ++ column_range affected_bytes = get_affected_range (m_policy, hint, CU_BYTES); ++ column_range affected_columns = get_affected_range (m_policy, hint, + CU_DISPLAY_COLS); +- column_range printed_columns = get_printed_columns (m_context, hint); ++ column_range printed_columns = get_printed_columns (m_policy, hint); + + /* Potentially consolidate. */ + if (!m_corrections.is_empty ()) +@@ -2280,7 +2489,7 @@ line_corrections::add_hint (const fixit_ + printed_columns, + hint->get_string (), + hint->get_length (), +- m_context->tabstop)); ++ m_policy)); + } + + /* If there are any fixit hints on source line ROW, print them. +@@ -2294,7 +2503,7 @@ layout::print_trailing_fixits (linenum_t + { + /* Build a list of correction instances for the line, + potentially consolidating hints (for the sake of readability). */ +- line_corrections corrections (m_context, m_exploc.file, row); ++ line_corrections corrections (m_policy, m_exploc.file, row); + for (unsigned int i = 0; i < m_fixit_hints.length (); i++) + { + const fixit_hint *hint = m_fixit_hints[i]; +@@ -2635,6 +2844,59 @@ namespace selftest { + + /* Selftests for diagnostic_show_locus. */ + ++/* Verify that cpp_display_width correctly handles escaping. */ ++ ++static void ++test_display_widths () ++{ ++ gcc_rich_location richloc (UNKNOWN_LOCATION); ++ ++ /* U+03C0 "GREEK SMALL LETTER PI". */ ++ const char *pi = "\xCF\x80"; ++ /* U+1F642 "SLIGHTLY SMILING FACE". */ ++ const char *emoji = "\xF0\x9F\x99\x82"; ++ /* Stray trailing byte of a UTF-8 character. */ ++ const char *stray = "\xBF"; ++ /* U+10FFFF. */ ++ const char *max_codepoint = "\xF4\x8F\xBF\xBF"; ++ ++ /* No escaping. */ ++ { ++ test_diagnostic_context dc; ++ char_display_policy policy (make_policy (dc, richloc)); ++ ASSERT_EQ (cpp_display_width (pi, strlen (pi), policy), 1); ++ ASSERT_EQ (cpp_display_width (emoji, strlen (emoji), policy), 2); ++ ASSERT_EQ (cpp_display_width (stray, strlen (stray), policy), 1); ++ /* Don't check width of U+10FFFF; it's in a private use plane. */ ++ } ++ ++ richloc.set_escape_on_output (true); ++ ++ { ++ test_diagnostic_context dc; ++ dc.escape_format = DIAGNOSTICS_ESCAPE_FORMAT_UNICODE; ++ char_display_policy policy (make_policy (dc, richloc)); ++ ASSERT_EQ (cpp_display_width (pi, strlen (pi), policy), 8); ++ ASSERT_EQ (cpp_display_width (emoji, strlen (emoji), policy), 9); ++ ASSERT_EQ (cpp_display_width (stray, strlen (stray), policy), 4); ++ ASSERT_EQ (cpp_display_width (max_codepoint, strlen (max_codepoint), ++ policy), ++ strlen ("")); ++ } ++ ++ { ++ test_diagnostic_context dc; ++ dc.escape_format = DIAGNOSTICS_ESCAPE_FORMAT_BYTES; ++ char_display_policy policy (make_policy (dc, richloc)); ++ ASSERT_EQ (cpp_display_width (pi, strlen (pi), policy), 8); ++ ASSERT_EQ (cpp_display_width (emoji, strlen (emoji), policy), 16); ++ ASSERT_EQ (cpp_display_width (stray, strlen (stray), policy), 4); ++ ASSERT_EQ (cpp_display_width (max_codepoint, strlen (max_codepoint), ++ policy), ++ 16); ++ } ++} ++ + /* For precise tests of the layout, make clear where the source line will + start. test_left_margin sets the total byte count from the left side of the + screen to the start of source lines, after the line number and the separator, +@@ -2704,10 +2966,10 @@ test_layout_x_offset_display_utf8 (const + char_span lspan = location_get_source_line (tmp.get_filename (), 1); + ASSERT_EQ (line_display_cols, + cpp_display_width (lspan.get_buffer (), lspan.length (), +- def_tabstop)); ++ def_policy ())); + ASSERT_EQ (line_display_cols, + location_compute_display_column (expand_location (line_end), +- def_tabstop)); ++ def_policy ())); + ASSERT_EQ (0, memcmp (lspan.get_buffer () + (emoji_col - 1), + "\xf0\x9f\x98\x82\xf0\x9f\x98\x82", 8)); + +@@ -2855,12 +3117,13 @@ test_layout_x_offset_display_tab (const + ASSERT_EQ ('\t', *(lspan.get_buffer () + (tab_col - 1))); + for (int tabstop = 1; tabstop != num_tabstops; ++tabstop) + { ++ cpp_char_column_policy policy (tabstop, cpp_wcwidth); + ASSERT_EQ (line_bytes + extra_width[tabstop], + cpp_display_width (lspan.get_buffer (), lspan.length (), +- tabstop)); ++ policy)); + ASSERT_EQ (line_bytes + extra_width[tabstop], + location_compute_display_column (expand_location (line_end), +- tabstop)); ++ policy)); + } + + /* Check that the tab is expanded to the expected number of spaces. */ +@@ -3992,6 +4255,43 @@ test_one_liner_labels_utf8 () + " bb\xf0\x9f\x98\x82\xf0\x9f\x98\x82\n", + pp_formatted_text (dc.printer)); + } ++ ++ /* Example of escaping the source lines. */ ++ { ++ text_range_label label0 ("label 0\xf0\x9f\x98\x82"); ++ text_range_label label1 ("label 1\xcf\x80"); ++ text_range_label label2 ("label 2\xcf\x80"); ++ gcc_rich_location richloc (foo, &label0); ++ richloc.add_range (bar, SHOW_RANGE_WITHOUT_CARET, &label1); ++ richloc.add_range (field, SHOW_RANGE_WITHOUT_CARET, &label2); ++ richloc.set_escape_on_output (true); ++ ++ { ++ test_diagnostic_context dc; ++ dc.escape_format = DIAGNOSTICS_ESCAPE_FORMAT_UNICODE; ++ diagnostic_show_locus (&dc, &richloc, DK_ERROR); ++ ASSERT_STREQ (" _foo = _bar._field;\n" ++ " ^~~~~~~~~~~~~ ~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~\n" ++ " | | |\n" ++ " | | label 2\xcf\x80\n" ++ " | label 1\xcf\x80\n" ++ " label 0\xf0\x9f\x98\x82\n", ++ pp_formatted_text (dc.printer)); ++ } ++ { ++ test_diagnostic_context dc; ++ dc.escape_format = DIAGNOSTICS_ESCAPE_FORMAT_BYTES; ++ diagnostic_show_locus (&dc, &richloc, DK_ERROR); ++ ASSERT_STREQ ++ (" <9f><98><82>_foo = <80>_bar.<9f><98><82>_field<80>;\n" ++ " ^~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n" ++ " | | |\n" ++ " | | label 2\xcf\x80\n" ++ " | label 1\xcf\x80\n" ++ " label 0\xf0\x9f\x98\x82\n", ++ pp_formatted_text (dc.printer)); ++ } ++ } + } + + /* Make sure that colorization codes don't interrupt a multibyte +@@ -4046,9 +4346,9 @@ test_diagnostic_show_locus_one_liner_utf + + char_span lspan = location_get_source_line (tmp.get_filename (), 1); + ASSERT_EQ (25, cpp_display_width (lspan.get_buffer (), lspan.length (), +- def_tabstop)); ++ def_policy ())); + ASSERT_EQ (25, location_compute_display_column (expand_location (line_end), +- def_tabstop)); ++ def_policy ())); + + test_one_liner_simple_caret_utf8 (); + test_one_liner_caret_and_range_utf8 (); +@@ -4434,30 +4734,31 @@ test_overlapped_fixit_printing (const li + pp_formatted_text (dc.printer)); + + /* Unit-test the line_corrections machinery. */ ++ char_display_policy policy (make_policy (dc, richloc)); + ASSERT_EQ (3, richloc.get_num_fixit_hints ()); + const fixit_hint *hint_0 = richloc.get_fixit_hint (0); + ASSERT_EQ (column_range (12, 12), +- get_affected_range (&dc, hint_0, CU_BYTES)); ++ get_affected_range (policy, hint_0, CU_BYTES)); + ASSERT_EQ (column_range (12, 12), +- get_affected_range (&dc, hint_0, CU_DISPLAY_COLS)); +- ASSERT_EQ (column_range (12, 22), get_printed_columns (&dc, hint_0)); ++ get_affected_range (policy, hint_0, CU_DISPLAY_COLS)); ++ ASSERT_EQ (column_range (12, 22), get_printed_columns (policy, hint_0)); + const fixit_hint *hint_1 = richloc.get_fixit_hint (1); + ASSERT_EQ (column_range (18, 18), +- get_affected_range (&dc, hint_1, CU_BYTES)); ++ get_affected_range (policy, hint_1, CU_BYTES)); + ASSERT_EQ (column_range (18, 18), +- get_affected_range (&dc, hint_1, CU_DISPLAY_COLS)); +- ASSERT_EQ (column_range (18, 20), get_printed_columns (&dc, hint_1)); ++ get_affected_range (policy, hint_1, CU_DISPLAY_COLS)); ++ ASSERT_EQ (column_range (18, 20), get_printed_columns (policy, hint_1)); + const fixit_hint *hint_2 = richloc.get_fixit_hint (2); + ASSERT_EQ (column_range (29, 28), +- get_affected_range (&dc, hint_2, CU_BYTES)); ++ get_affected_range (policy, hint_2, CU_BYTES)); + ASSERT_EQ (column_range (29, 28), +- get_affected_range (&dc, hint_2, CU_DISPLAY_COLS)); +- ASSERT_EQ (column_range (29, 29), get_printed_columns (&dc, hint_2)); ++ get_affected_range (policy, hint_2, CU_DISPLAY_COLS)); ++ ASSERT_EQ (column_range (29, 29), get_printed_columns (policy, hint_2)); + + /* Add each hint in turn to a line_corrections instance, + and verify that they are consolidated into one correction instance + as expected. */ +- line_corrections lc (&dc, tmp.get_filename (), 1); ++ line_corrections lc (policy, tmp.get_filename (), 1); + + /* The first replace hint by itself. */ + lc.add_hint (hint_0); +@@ -4649,30 +4950,31 @@ test_overlapped_fixit_printing_utf8 (con + pp_formatted_text (dc.printer)); + + /* Unit-test the line_corrections machinery. */ ++ char_display_policy policy (make_policy (dc, richloc)); + ASSERT_EQ (3, richloc.get_num_fixit_hints ()); + const fixit_hint *hint_0 = richloc.get_fixit_hint (0); + ASSERT_EQ (column_range (14, 14), +- get_affected_range (&dc, hint_0, CU_BYTES)); ++ get_affected_range (policy, hint_0, CU_BYTES)); + ASSERT_EQ (column_range (12, 12), +- get_affected_range (&dc, hint_0, CU_DISPLAY_COLS)); +- ASSERT_EQ (column_range (12, 22), get_printed_columns (&dc, hint_0)); ++ get_affected_range (policy, hint_0, CU_DISPLAY_COLS)); ++ ASSERT_EQ (column_range (12, 22), get_printed_columns (policy, hint_0)); + const fixit_hint *hint_1 = richloc.get_fixit_hint (1); + ASSERT_EQ (column_range (22, 22), +- get_affected_range (&dc, hint_1, CU_BYTES)); ++ get_affected_range (policy, hint_1, CU_BYTES)); + ASSERT_EQ (column_range (18, 18), +- get_affected_range (&dc, hint_1, CU_DISPLAY_COLS)); +- ASSERT_EQ (column_range (18, 20), get_printed_columns (&dc, hint_1)); ++ get_affected_range (policy, hint_1, CU_DISPLAY_COLS)); ++ ASSERT_EQ (column_range (18, 20), get_printed_columns (policy, hint_1)); + const fixit_hint *hint_2 = richloc.get_fixit_hint (2); + ASSERT_EQ (column_range (35, 34), +- get_affected_range (&dc, hint_2, CU_BYTES)); ++ get_affected_range (policy, hint_2, CU_BYTES)); + ASSERT_EQ (column_range (30, 29), +- get_affected_range (&dc, hint_2, CU_DISPLAY_COLS)); +- ASSERT_EQ (column_range (30, 30), get_printed_columns (&dc, hint_2)); ++ get_affected_range (policy, hint_2, CU_DISPLAY_COLS)); ++ ASSERT_EQ (column_range (30, 30), get_printed_columns (policy, hint_2)); + + /* Add each hint in turn to a line_corrections instance, + and verify that they are consolidated into one correction instance + as expected. */ +- line_corrections lc (&dc, tmp.get_filename (), 1); ++ line_corrections lc (policy, tmp.get_filename (), 1); + + /* The first replace hint by itself. */ + lc.add_hint (hint_0); +@@ -4866,15 +5168,16 @@ test_overlapped_fixit_printing_2 (const + richloc.add_fixit_insert_before (col_21, "}"); + + /* These fixits should be accepted; they can't be consolidated. */ ++ char_display_policy policy (make_policy (dc, richloc)); + ASSERT_EQ (2, richloc.get_num_fixit_hints ()); + const fixit_hint *hint_0 = richloc.get_fixit_hint (0); + ASSERT_EQ (column_range (23, 22), +- get_affected_range (&dc, hint_0, CU_BYTES)); +- ASSERT_EQ (column_range (23, 23), get_printed_columns (&dc, hint_0)); ++ get_affected_range (policy, hint_0, CU_BYTES)); ++ ASSERT_EQ (column_range (23, 23), get_printed_columns (policy, hint_0)); + const fixit_hint *hint_1 = richloc.get_fixit_hint (1); + ASSERT_EQ (column_range (21, 20), +- get_affected_range (&dc, hint_1, CU_BYTES)); +- ASSERT_EQ (column_range (21, 21), get_printed_columns (&dc, hint_1)); ++ get_affected_range (policy, hint_1, CU_BYTES)); ++ ASSERT_EQ (column_range (21, 21), get_printed_columns (policy, hint_1)); + + /* Verify that they're printed correctly. */ + diagnostic_show_locus (&dc, &richloc, DK_ERROR); +@@ -5141,10 +5444,11 @@ test_tab_expansion (const line_table_cas + ....................123 45678901234 56789012345 columns */ + + const int tabstop = 8; ++ cpp_char_column_policy policy (tabstop, cpp_wcwidth); + const int first_non_ws_byte_col = 7; + const int right_quote_byte_col = 15; + const int last_byte_col = 25; +- ASSERT_EQ (35, cpp_display_width (content, last_byte_col, tabstop)); ++ ASSERT_EQ (35, cpp_display_width (content, last_byte_col, policy)); + + temp_source_file tmp (SELFTEST_LOCATION, ".c", content); + line_table_test ltt (case_); +@@ -5187,6 +5491,114 @@ test_tab_expansion (const line_table_cas + } + } + ++/* Verify that the escaping machinery can cope with a variety of different ++ invalid bytes. */ ++ ++static void ++test_escaping_bytes_1 (const line_table_case &case_) ++{ ++ const char content[] = "before\0\1\2\3\r\x80\xff""after\n"; ++ const size_t sz = sizeof (content); ++ temp_source_file tmp (SELFTEST_LOCATION, ".c", content, sz); ++ line_table_test ltt (case_); ++ const line_map_ordinary *ord_map = linemap_check_ordinary ++ (linemap_add (line_table, LC_ENTER, false, tmp.get_filename (), 0)); ++ linemap_line_start (line_table, 1, 100); ++ ++ location_t finish ++ = linemap_position_for_line_and_column (line_table, ord_map, 1, ++ strlen (content)); ++ ++ if (finish > LINE_MAP_MAX_LOCATION_WITH_COLS) ++ return; ++ ++ /* Locations of the NUL and \r bytes. */ ++ location_t nul_loc ++ = linemap_position_for_line_and_column (line_table, ord_map, 1, 7); ++ location_t r_loc ++ = linemap_position_for_line_and_column (line_table, ord_map, 1, 11); ++ gcc_rich_location richloc (nul_loc); ++ richloc.add_range (r_loc); ++ ++ { ++ test_diagnostic_context dc; ++ diagnostic_show_locus (&dc, &richloc, DK_ERROR); ++ ASSERT_STREQ (" before \1\2\3 \x80\xff""after\n" ++ " ^ ~\n", ++ pp_formatted_text (dc.printer)); ++ } ++ richloc.set_escape_on_output (true); ++ { ++ test_diagnostic_context dc; ++ dc.escape_format = DIAGNOSTICS_ESCAPE_FORMAT_UNICODE; ++ diagnostic_show_locus (&dc, &richloc, DK_ERROR); ++ ASSERT_STREQ ++ (" before<80>after\n" ++ " ^~~~~~~~ ~~~~~~~~\n", ++ pp_formatted_text (dc.printer)); ++ } ++ { ++ test_diagnostic_context dc; ++ dc.escape_format = DIAGNOSTICS_ESCAPE_FORMAT_BYTES; ++ diagnostic_show_locus (&dc, &richloc, DK_ERROR); ++ ASSERT_STREQ (" before<00><01><02><03><0d><80>after\n" ++ " ^~~~ ~~~~\n", ++ pp_formatted_text (dc.printer)); ++ } ++} ++ ++/* As above, but verify that we handle the initial byte of a line ++ correctly. */ ++ ++static void ++test_escaping_bytes_2 (const line_table_case &case_) ++{ ++ const char content[] = "\0after\n"; ++ const size_t sz = sizeof (content); ++ temp_source_file tmp (SELFTEST_LOCATION, ".c", content, sz); ++ line_table_test ltt (case_); ++ const line_map_ordinary *ord_map = linemap_check_ordinary ++ (linemap_add (line_table, LC_ENTER, false, tmp.get_filename (), 0)); ++ linemap_line_start (line_table, 1, 100); ++ ++ location_t finish ++ = linemap_position_for_line_and_column (line_table, ord_map, 1, ++ strlen (content)); ++ ++ if (finish > LINE_MAP_MAX_LOCATION_WITH_COLS) ++ return; ++ ++ /* Location of the NUL byte. */ ++ location_t nul_loc ++ = linemap_position_for_line_and_column (line_table, ord_map, 1, 1); ++ gcc_rich_location richloc (nul_loc); ++ ++ { ++ test_diagnostic_context dc; ++ diagnostic_show_locus (&dc, &richloc, DK_ERROR); ++ ASSERT_STREQ (" after\n" ++ " ^\n", ++ pp_formatted_text (dc.printer)); ++ } ++ richloc.set_escape_on_output (true); ++ { ++ test_diagnostic_context dc; ++ dc.escape_format = DIAGNOSTICS_ESCAPE_FORMAT_UNICODE; ++ diagnostic_show_locus (&dc, &richloc, DK_ERROR); ++ ASSERT_STREQ (" after\n" ++ " ^~~~~~~~\n", ++ pp_formatted_text (dc.printer)); ++ } ++ { ++ test_diagnostic_context dc; ++ dc.escape_format = DIAGNOSTICS_ESCAPE_FORMAT_BYTES; ++ diagnostic_show_locus (&dc, &richloc, DK_ERROR); ++ ASSERT_STREQ (" <00>after\n" ++ " ^~~~\n", ++ pp_formatted_text (dc.printer)); ++ } ++} ++ + /* Verify that line numbers are correctly printed for the case of + a multiline range in which the width of the line numbers changes + (e.g. from "9" to "10"). */ +@@ -5243,6 +5655,8 @@ diagnostic_show_locus_c_tests () + test_layout_range_for_single_line (); + test_layout_range_for_multiple_lines (); + ++ test_display_widths (); ++ + for_each_line_table_case (test_layout_x_offset_display_utf8); + for_each_line_table_case (test_layout_x_offset_display_tab); + +@@ -5263,6 +5677,8 @@ diagnostic_show_locus_c_tests () + for_each_line_table_case (test_fixit_replace_containing_newline); + for_each_line_table_case (test_fixit_deletion_affecting_newline); + for_each_line_table_case (test_tab_expansion); ++ for_each_line_table_case (test_escaping_bytes_1); ++ for_each_line_table_case (test_escaping_bytes_2); + + test_line_numbers_multiline_range (); + } +diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi +--- a/gcc/doc/invoke.texi 2021-12-25 01:29:12.927317174 -0800 ++++ b/gcc/doc/invoke.texi 2021-12-25 01:30:50.681688823 -0800 +@@ -295,7 +295,8 @@ Objective-C and Objective-C++ Dialects}. + -fdiagnostics-show-path-depths @gol + -fno-show-column @gol + -fdiagnostics-column-unit=@r{[}display@r{|}byte@r{]} @gol +--fdiagnostics-column-origin=@var{origin}} ++-fdiagnostics-column-origin=@var{origin} @gol ++-fdiagnostics-escape-format=@r{[}unicode@r{|}bytes@r{]}} + + @item Warning Options + @xref{Warning Options,,Options to Request or Suppress Warnings}. +@@ -4451,6 +4452,38 @@ first column. The default value of 1 co + behavior and to the GNU style guide. Some utilities may perform better with an + origin of 0; any non-negative value may be specified. + ++@item -fdiagnostics-escape-format=@var{FORMAT} ++@opindex fdiagnostics-escape-format ++When GCC prints pertinent source lines for a diagnostic it normally attempts ++to print the source bytes directly. However, some diagnostics relate to encoding ++issues in the source file, such as malformed UTF-8, or issues with Unicode ++normalization. These diagnostics are flagged so that GCC will escape bytes ++that are not printable ASCII when printing their pertinent source lines. ++ ++This option controls how such bytes should be escaped. ++ ++The default @var{FORMAT}, @samp{unicode} displays Unicode characters that ++are not printable ASCII in the form @samp{}, and bytes that do not ++correspond to a Unicode character validly-encoded in UTF-8-encoded will be ++displayed as hexadecimal in the form @samp{}. ++ ++For example, a source line containing the string @samp{before} followed by the ++Unicode character U+03C0 (``GREEK SMALL LETTER PI'', with UTF-8 encoding ++0xCF 0x80) followed by the byte 0xBF (a stray UTF-8 trailing byte), followed by ++the string @samp{after} will be printed for such a diagnostic as: ++ ++@smallexample ++ beforeafter ++@end smallexample ++ ++Setting @var{FORMAT} to @samp{bytes} will display all non-printable-ASCII bytes ++in the form @samp{}, thus showing the underlying encoding of non-ASCII ++Unicode characters. For the example above, the following will be printed: ++ ++@smallexample ++ before<80>after ++@end smallexample ++ + @item -fdiagnostics-format=@var{FORMAT} + @opindex fdiagnostics-format + Select a different format for printing diagnostics. +@@ -4518,9 +4551,11 @@ might be printed in JSON form (after for + @} + @} + ], ++ "escape-source": false, + "message": "...this statement, but the latter is @dots{}" + @} + ] ++ "escape-source": false, + "column-origin": 1, + @}, + @dots{} +@@ -4607,6 +4642,7 @@ of the expression, which have labels. I + "label": "T @{aka struct t@}" + @} + ], ++ "escape-source": false, + "message": "invalid operands to binary + @dots{}" + @} + @end smallexample +@@ -4660,6 +4696,7 @@ might be printed in JSON form as: + @} + @} + ], ++ "escape-source": false, + "message": "\u2018struct s\u2019 has no member named @dots{}" + @} + @end smallexample +@@ -4717,6 +4754,10 @@ For example, the intraprocedural example + ] + @end smallexample + ++Diagnostics have a boolean attribute @code{escape-source}, hinting whether ++non-ASCII bytes should be escaped when printing the pertinent lines of ++source code (@code{true} for diagnostics involving source encoding issues). ++ + @end table + + @node Warning Options +diff --git a/gcc/input.c b/gcc/input.c +--- a/gcc/input.c 2021-12-25 01:29:12.927317174 -0800 ++++ b/gcc/input.c 2021-12-25 01:30:50.681688823 -0800 +@@ -913,7 +913,8 @@ make_location (location_t caret, source_ + source line in order to calculate the display width. If that cannot be done + for any reason, then returns the byte column as a fallback. */ + int +-location_compute_display_column (expanded_location exploc, int tabstop) ++location_compute_display_column (expanded_location exploc, ++ const cpp_char_column_policy &policy) + { + if (!(exploc.file && *exploc.file && exploc.line && exploc.column)) + return exploc.column; +@@ -921,7 +922,7 @@ location_compute_display_column (expande + /* If line is NULL, this function returns exploc.column which is the + desired fallback. */ + return cpp_byte_column_to_display_column (line.get_buffer (), line.length (), +- exploc.column, tabstop); ++ exploc.column, policy); + } + + /* Dump statistics to stderr about the memory usage of the line_table +@@ -3609,43 +3610,50 @@ test_line_offset_overflow () + void test_cpp_utf8 () + { + const int def_tabstop = 8; ++ cpp_char_column_policy policy (def_tabstop, cpp_wcwidth); ++ + /* Verify that wcwidth of invalid UTF-8 or control bytes is 1. */ + { +- int w_bad = cpp_display_width ("\xf0!\x9f!\x98!\x82!", 8, def_tabstop); ++ int w_bad = cpp_display_width ("\xf0!\x9f!\x98!\x82!", 8, policy); + ASSERT_EQ (8, w_bad); +- int w_ctrl = cpp_display_width ("\r\n\v\0\1", 5, def_tabstop); ++ int w_ctrl = cpp_display_width ("\r\n\v\0\1", 5, policy); + ASSERT_EQ (5, w_ctrl); + } + + /* Verify that wcwidth of valid UTF-8 is as expected. */ + { +- const int w_pi = cpp_display_width ("\xcf\x80", 2, def_tabstop); ++ const int w_pi = cpp_display_width ("\xcf\x80", 2, policy); + ASSERT_EQ (1, w_pi); +- const int w_emoji = cpp_display_width ("\xf0\x9f\x98\x82", 4, def_tabstop); ++ const int w_emoji = cpp_display_width ("\xf0\x9f\x98\x82", 4, policy); + ASSERT_EQ (2, w_emoji); + const int w_umlaut_precomposed = cpp_display_width ("\xc3\xbf", 2, +- def_tabstop); ++ policy); + ASSERT_EQ (1, w_umlaut_precomposed); + const int w_umlaut_combining = cpp_display_width ("y\xcc\x88", 3, +- def_tabstop); ++ policy); + ASSERT_EQ (1, w_umlaut_combining); +- const int w_han = cpp_display_width ("\xe4\xb8\xba", 3, def_tabstop); ++ const int w_han = cpp_display_width ("\xe4\xb8\xba", 3, policy); + ASSERT_EQ (2, w_han); +- const int w_ascii = cpp_display_width ("GCC", 3, def_tabstop); ++ const int w_ascii = cpp_display_width ("GCC", 3, policy); + ASSERT_EQ (3, w_ascii); + const int w_mixed = cpp_display_width ("\xcf\x80 = 3.14 \xf0\x9f\x98\x82" + "\x9f! \xe4\xb8\xba y\xcc\x88", +- 24, def_tabstop); ++ 24, policy); + ASSERT_EQ (18, w_mixed); + } + + /* Verify that display width properly expands tabs. */ + { + const char *tstr = "\tabc\td"; +- ASSERT_EQ (6, cpp_display_width (tstr, 6, 1)); +- ASSERT_EQ (10, cpp_display_width (tstr, 6, 3)); +- ASSERT_EQ (17, cpp_display_width (tstr, 6, 8)); +- ASSERT_EQ (1, cpp_display_column_to_byte_column (tstr, 6, 7, 8)); ++ ASSERT_EQ (6, cpp_display_width (tstr, 6, ++ cpp_char_column_policy (1, cpp_wcwidth))); ++ ASSERT_EQ (10, cpp_display_width (tstr, 6, ++ cpp_char_column_policy (3, cpp_wcwidth))); ++ ASSERT_EQ (17, cpp_display_width (tstr, 6, ++ cpp_char_column_policy (8, cpp_wcwidth))); ++ ASSERT_EQ (1, ++ cpp_display_column_to_byte_column ++ (tstr, 6, 7, cpp_char_column_policy (8, cpp_wcwidth))); + } + + /* Verify that cpp_byte_column_to_display_column can go past the end, +@@ -3658,13 +3666,13 @@ void test_cpp_utf8 () + /* 111122223456 + Byte columns. */ + +- ASSERT_EQ (5, cpp_display_width (str, 6, def_tabstop)); ++ ASSERT_EQ (5, cpp_display_width (str, 6, policy)); + ASSERT_EQ (105, +- cpp_byte_column_to_display_column (str, 6, 106, def_tabstop)); ++ cpp_byte_column_to_display_column (str, 6, 106, policy)); + ASSERT_EQ (10000, +- cpp_byte_column_to_display_column (NULL, 0, 10000, def_tabstop)); ++ cpp_byte_column_to_display_column (NULL, 0, 10000, policy)); + ASSERT_EQ (0, +- cpp_byte_column_to_display_column (NULL, 10000, 0, def_tabstop)); ++ cpp_byte_column_to_display_column (NULL, 10000, 0, policy)); + } + + /* Verify that cpp_display_column_to_byte_column can go past the end, +@@ -3678,25 +3686,25 @@ void test_cpp_utf8 () + /* 000000000000000000000000000000000111111 + 111122223333444456666777788889999012345 + Byte columns. */ +- ASSERT_EQ (4, cpp_display_column_to_byte_column (str, 15, 2, def_tabstop)); ++ ASSERT_EQ (4, cpp_display_column_to_byte_column (str, 15, 2, policy)); + ASSERT_EQ (15, +- cpp_display_column_to_byte_column (str, 15, 11, def_tabstop)); ++ cpp_display_column_to_byte_column (str, 15, 11, policy)); + ASSERT_EQ (115, +- cpp_display_column_to_byte_column (str, 15, 111, def_tabstop)); ++ cpp_display_column_to_byte_column (str, 15, 111, policy)); + ASSERT_EQ (10000, +- cpp_display_column_to_byte_column (NULL, 0, 10000, def_tabstop)); ++ cpp_display_column_to_byte_column (NULL, 0, 10000, policy)); + ASSERT_EQ (0, +- cpp_display_column_to_byte_column (NULL, 10000, 0, def_tabstop)); ++ cpp_display_column_to_byte_column (NULL, 10000, 0, policy)); + + /* Verify that we do not interrupt a UTF-8 sequence. */ +- ASSERT_EQ (4, cpp_display_column_to_byte_column (str, 15, 1, def_tabstop)); ++ ASSERT_EQ (4, cpp_display_column_to_byte_column (str, 15, 1, policy)); + + for (int byte_col = 1; byte_col <= 15; ++byte_col) + { + const int disp_col +- = cpp_byte_column_to_display_column (str, 15, byte_col, def_tabstop); ++ = cpp_byte_column_to_display_column (str, 15, byte_col, policy); + const int byte_col2 +- = cpp_display_column_to_byte_column (str, 15, disp_col, def_tabstop); ++ = cpp_display_column_to_byte_column (str, 15, disp_col, policy); + + /* If we ask for the display column in the middle of a UTF-8 + sequence, it will return the length of the partial sequence, +diff --git a/gcc/input.h b/gcc/input.h +--- a/gcc/input.h 2021-12-25 01:29:12.927317174 -0800 ++++ b/gcc/input.h 2021-12-25 01:30:50.681688823 -0800 +@@ -39,8 +39,11 @@ STATIC_ASSERT (BUILTINS_LOCATION < RESER + extern bool is_location_from_builtin_token (location_t); + extern expanded_location expand_location (location_t); + +-extern int location_compute_display_column (expanded_location exploc, +- int tabstop); ++class cpp_char_column_policy; ++ ++extern int ++location_compute_display_column (expanded_location exploc, ++ const cpp_char_column_policy &policy); + + /* A class capturing the bounds of a buffer, to allow for run-time + bounds-checking in a checked build. */ +diff --git a/gcc/opts.c b/gcc/opts.c +--- a/gcc/opts.c 2021-12-25 01:29:12.927317174 -0800 ++++ b/gcc/opts.c 2021-12-25 01:30:50.681688823 -0800 +@@ -2447,6 +2447,10 @@ common_handle_option (struct gcc_options + dc->column_origin = value; + break; + ++ case OPT_fdiagnostics_escape_format_: ++ dc->escape_format = (enum diagnostics_escape_format)value; ++ break; ++ + case OPT_fdiagnostics_show_cwe: + dc->show_cwe = value; + break; +diff --git a/gcc/selftest.c b/gcc/selftest.c +--- a/gcc/selftest.c 2020-07-22 23:35:17.820389797 -0700 ++++ b/gcc/selftest.c 2021-12-25 01:30:50.681688823 -0800 +@@ -193,6 +193,21 @@ temp_source_file::temp_source_file (cons + fclose (out); + } + ++/* As above, but with a size, to allow for NUL bytes in CONTENT. */ ++ ++temp_source_file::temp_source_file (const location &loc, ++ const char *suffix, ++ const char *content, ++ size_t sz) ++: named_temp_file (suffix) ++{ ++ FILE *out = fopen (get_filename (), "w"); ++ if (!out) ++ fail_formatted (loc, "unable to open tempfile: %s", get_filename ()); ++ fwrite (content, sz, 1, out); ++ fclose (out); ++} ++ + /* Avoid introducing locale-specific differences in the results + by hardcoding open_quote and close_quote. */ + +diff --git a/gcc/selftest.h b/gcc/selftest.h +--- a/gcc/selftest.h 2020-07-22 23:35:17.820389797 -0700 ++++ b/gcc/selftest.h 2021-12-25 01:30:50.681688823 -0800 +@@ -112,6 +112,8 @@ class temp_source_file : public named_te + public: + temp_source_file (const location &loc, const char *suffix, + const char *content); ++ temp_source_file (const location &loc, const char *suffix, ++ const char *content, size_t sz); + }; + + /* RAII-style class for avoiding introducing locale-specific differences +diff --git a/gcc/testsuite/c-c++-common/diagnostic-format-json-1.c b/gcc/testsuite/c-c++-common/diagnostic-format-json-1.c +--- a/gcc/testsuite/c-c++-common/diagnostic-format-json-1.c 2021-12-25 01:29:12.927317174 -0800 ++++ b/gcc/testsuite/c-c++-common/diagnostic-format-json-1.c 2021-12-25 01:30:50.681688823 -0800 +@@ -9,6 +9,7 @@ + + /* { dg-regexp "\"kind\": \"error\"" } */ + /* { dg-regexp "\"column-origin\": 1" } */ ++/* { dg-regexp "\"escape-source\": false" } */ + /* { dg-regexp "\"message\": \"#error message\"" } */ + + /* { dg-regexp "\"caret\": \{" } */ +diff --git a/gcc/testsuite/c-c++-common/diagnostic-format-json-2.c b/gcc/testsuite/c-c++-common/diagnostic-format-json-2.c +--- a/gcc/testsuite/c-c++-common/diagnostic-format-json-2.c 2021-12-25 01:29:12.927317174 -0800 ++++ b/gcc/testsuite/c-c++-common/diagnostic-format-json-2.c 2021-12-25 01:30:50.681688823 -0800 +@@ -9,6 +9,7 @@ + + /* { dg-regexp "\"kind\": \"warning\"" } */ + /* { dg-regexp "\"column-origin\": 1" } */ ++/* { dg-regexp "\"escape-source\": false" } */ + /* { dg-regexp "\"message\": \"#warning message\"" } */ + /* { dg-regexp "\"option\": \"-Wcpp\"" } */ + /* { dg-regexp "\"option_url\": \"https:\[^\n\r\"\]*#index-Wcpp\"" } */ +diff --git a/gcc/testsuite/c-c++-common/diagnostic-format-json-3.c b/gcc/testsuite/c-c++-common/diagnostic-format-json-3.c +--- a/gcc/testsuite/c-c++-common/diagnostic-format-json-3.c 2021-12-25 01:29:12.927317174 -0800 ++++ b/gcc/testsuite/c-c++-common/diagnostic-format-json-3.c 2021-12-25 01:30:50.681688823 -0800 +@@ -9,6 +9,7 @@ + + /* { dg-regexp "\"kind\": \"error\"" } */ + /* { dg-regexp "\"column-origin\": 1" } */ ++/* { dg-regexp "\"escape-source\": false" } */ + /* { dg-regexp "\"message\": \"#warning message\"" } */ + /* { dg-regexp "\"option\": \"-Werror=cpp\"" } */ + /* { dg-regexp "\"option_url\": \"https:\[^\n\r\"\]*#index-Wcpp\"" } */ +diff --git a/gcc/testsuite/c-c++-common/diagnostic-format-json-4.c b/gcc/testsuite/c-c++-common/diagnostic-format-json-4.c +--- a/gcc/testsuite/c-c++-common/diagnostic-format-json-4.c 2021-12-25 01:29:12.927317174 -0800 ++++ b/gcc/testsuite/c-c++-common/diagnostic-format-json-4.c 2021-12-25 01:30:50.681688823 -0800 +@@ -19,6 +19,7 @@ int test (void) + + /* { dg-regexp "\"kind\": \"note\"" } */ + /* { dg-regexp "\"message\": \"...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'\"" } */ ++/* { dg-regexp "\"escape-source\": false" } */ + + /* { dg-regexp "\"caret\": \{" } */ + /* { dg-regexp "\"file\": \"\[^\n\r\"\]*diagnostic-format-json-4.c\"" } */ +@@ -39,6 +40,7 @@ int test (void) + /* { dg-regexp "\"kind\": \"warning\"" } */ + /* { dg-regexp "\"column-origin\": 1" } */ + /* { dg-regexp "\"message\": \"this 'if' clause does not guard...\"" } */ ++/* { dg-regexp "\"escape-source\": false" } */ + /* { dg-regexp "\"option\": \"-Wmisleading-indentation\"" } */ + /* { dg-regexp "\"option_url\": \"https:\[^\n\r\"\]*#index-Wmisleading-indentation\"" } */ + +diff --git a/gcc/testsuite/c-c++-common/diagnostic-format-json-5.c b/gcc/testsuite/c-c++-common/diagnostic-format-json-5.c +--- a/gcc/testsuite/c-c++-common/diagnostic-format-json-5.c 2021-12-25 01:29:12.927317174 -0800 ++++ b/gcc/testsuite/c-c++-common/diagnostic-format-json-5.c 2021-12-25 01:30:50.681688823 -0800 +@@ -14,6 +14,7 @@ int test (struct s *ptr) + + /* { dg-regexp "\"kind\": \"error\"" } */ + /* { dg-regexp "\"column-origin\": 1" } */ ++/* { dg-regexp "\"escape-source\": false" } */ + /* { dg-regexp "\"message\": \".*\"" } */ + + /* Verify fix-it hints. */ +diff --git a/gcc/testsuite/gcc.dg/cpp/warn-normalized-4-bytes.c b/gcc/testsuite/gcc.dg/cpp/warn-normalized-4-bytes.c +--- a/gcc/testsuite/gcc.dg/cpp/warn-normalized-4-bytes.c 1969-12-31 16:00:00.000000000 -0800 ++++ b/gcc/testsuite/gcc.dg/cpp/warn-normalized-4-bytes.c 2021-12-25 01:30:50.681688823 -0800 +@@ -0,0 +1,21 @@ ++// { dg-do preprocess } ++// { dg-options "-std=gnu99 -Werror=normalized=nfc -fdiagnostics-show-caret -fdiagnostics-escape-format=bytes" } ++/* { dg-message "some warnings being treated as errors" "" {target "*-*-*"} 0 } */ ++ ++/* འ= U+0F43 TIBETAN LETTER GHA, which has decomposition "0F42 0FB7" i.e. ++ U+0F42 TIBETAN LETTER GA: འ++ U+0FB7 TIBETAN SUBJOINED LETTER HA: ྷ ++ ++ The UTF-8 encoding of U+0F43 TIBETAN LETTER GHA is: E0 BD 83. */ ++ ++foo before_\u0F43_after bar // { dg-error "`before_.U00000f43_after' is not in NFC .-Werror=normalized=." } ++/* { dg-begin-multiline-output "" } ++ foo before_\u0F43_after bar ++ ^~~~~~~~~~~~~~~~~~~ ++ { dg-end-multiline-output "" } */ ++ ++foo before_à½_after bar // { dg-error "`before_.U00000f43_after' is not in NFC .-Werror=normalized=." } ++/* { dg-begin-multiline-output "" } ++ foo before_<83>_after bar ++ ^~~~~~~~~~~~~~~~~~~~~~~~~ ++ { dg-end-multiline-output "" } */ +diff --git a/gcc/testsuite/gcc.dg/cpp/warn-normalized-4-unicode.c b/gcc/testsuite/gcc.dg/cpp/warn-normalized-4-unicode.c +--- a/gcc/testsuite/gcc.dg/cpp/warn-normalized-4-unicode.c 1969-12-31 16:00:00.000000000 -0800 ++++ b/gcc/testsuite/gcc.dg/cpp/warn-normalized-4-unicode.c 2021-12-25 01:30:50.681688823 -0800 +@@ -0,0 +1,19 @@ ++// { dg-do preprocess } ++// { dg-options "-std=gnu99 -Werror=normalized=nfc -fdiagnostics-show-caret -fdiagnostics-escape-format=unicode" } ++/* { dg-message "some warnings being treated as errors" "" {target "*-*-*"} 0 } */ ++ ++/* འ= U+0F43 TIBETAN LETTER GHA, which has decomposition "0F42 0FB7" i.e. ++ U+0F42 TIBETAN LETTER GA: འ++ U+0FB7 TIBETAN SUBJOINED LETTER HA: ྷ */ ++ ++foo before_\u0F43_after bar // { dg-error "`before_.U00000f43_after' is not in NFC .-Werror=normalized=." } ++/* { dg-begin-multiline-output "" } ++ foo before_\u0F43_after bar ++ ^~~~~~~~~~~~~~~~~~~ ++ { dg-end-multiline-output "" } */ ++ ++foo before_à½_after bar // { dg-error "`before_.U00000f43_after' is not in NFC .-Werror=normalized=." } ++/* { dg-begin-multiline-output "" } ++ foo before__after bar ++ ^~~~~~~~~~~~~~~~~~~~~ ++ { dg-end-multiline-output "" } */ +diff --git a/gcc/testsuite/gfortran.dg/diagnostic-format-json-1.F90 b/gcc/testsuite/gfortran.dg/diagnostic-format-json-1.F90 +--- a/gcc/testsuite/gfortran.dg/diagnostic-format-json-1.F90 2021-12-25 01:29:12.931317107 -0800 ++++ b/gcc/testsuite/gfortran.dg/diagnostic-format-json-1.F90 2021-12-25 01:30:50.681688823 -0800 +@@ -9,6 +9,7 @@ + + ! { dg-regexp "\"kind\": \"error\"" } + ! { dg-regexp "\"column-origin\": 1" } ++! { dg-regexp "\"escape-source\": false" } + ! { dg-regexp "\"message\": \"#error message\"" } + + ! { dg-regexp "\"caret\": \{" } +diff --git a/gcc/testsuite/gfortran.dg/diagnostic-format-json-2.F90 b/gcc/testsuite/gfortran.dg/diagnostic-format-json-2.F90 +--- a/gcc/testsuite/gfortran.dg/diagnostic-format-json-2.F90 2021-12-25 01:29:12.931317107 -0800 ++++ b/gcc/testsuite/gfortran.dg/diagnostic-format-json-2.F90 2021-12-25 01:30:50.681688823 -0800 +@@ -9,6 +9,7 @@ + + ! { dg-regexp "\"kind\": \"warning\"" } + ! { dg-regexp "\"column-origin\": 1" } ++! { dg-regexp "\"escape-source\": false" } + ! { dg-regexp "\"message\": \"#warning message\"" } + ! { dg-regexp "\"option\": \"-Wcpp\"" } + ! { dg-regexp "\"option_url\": \"\[^\n\r\"\]*#index-Wcpp\"" } +diff --git a/gcc/testsuite/gfortran.dg/diagnostic-format-json-3.F90 b/gcc/testsuite/gfortran.dg/diagnostic-format-json-3.F90 +--- a/gcc/testsuite/gfortran.dg/diagnostic-format-json-3.F90 2021-12-25 01:29:12.931317107 -0800 ++++ b/gcc/testsuite/gfortran.dg/diagnostic-format-json-3.F90 2021-12-25 01:30:50.681688823 -0800 +@@ -9,6 +9,7 @@ + + ! { dg-regexp "\"kind\": \"error\"" } + ! { dg-regexp "\"column-origin\": 1" } ++! { dg-regexp "\"escape-source\": false" } + ! { dg-regexp "\"message\": \"#warning message\"" } + ! { dg-regexp "\"option\": \"-Werror=cpp\"" } + ! { dg-regexp "\"option_url\": \"\[^\n\r\"\]*#index-Wcpp\"" } +diff --git a/libcpp/charset.c b/libcpp/charset.c +--- a/libcpp/charset.c 2021-12-25 01:29:12.931317107 -0800 ++++ b/libcpp/charset.c 2021-12-25 01:30:50.681688823 -0800 +@@ -1549,12 +1549,14 @@ convert_escape (cpp_reader *pfile, const + "unknown escape sequence: '\\%c'", (int) c); + else + { ++ encoding_rich_location rich_loc (pfile); ++ + /* diagnostic.c does not support "%03o". When it does, this + code can use %03o directly in the diagnostic again. */ + char buf[32]; + sprintf(buf, "%03o", (int) c); +- cpp_error (pfile, CPP_DL_PEDWARN, +- "unknown escape sequence: '\\%s'", buf); ++ cpp_error_at (pfile, CPP_DL_PEDWARN, &rich_loc, ++ "unknown escape sequence: '\\%s'", buf); + } + } + +@@ -2277,14 +2279,16 @@ cpp_string_location_reader::get_next () + } + + cpp_display_width_computation:: +-cpp_display_width_computation (const char *data, int data_length, int tabstop) : ++cpp_display_width_computation (const char *data, int data_length, ++ const cpp_char_column_policy &policy) : + m_begin (data), + m_next (m_begin), + m_bytes_left (data_length), +- m_tabstop (tabstop), ++ m_policy (policy), + m_display_cols (0) + { +- gcc_assert (m_tabstop > 0); ++ gcc_assert (policy.m_tabstop > 0); ++ gcc_assert (policy.m_width_cb); + } + + +@@ -2296,19 +2300,28 @@ cpp_display_width_computation (const cha + point to a valid UTF-8-encoded sequence, then it will be treated as a single + byte with display width 1. m_cur_display_col is the current display column, + relative to which tab stops should be expanded. Returns the display width of +- the codepoint just processed. */ ++ the codepoint just processed. ++ If OUT is non-NULL, it is populated. */ + + int +-cpp_display_width_computation::process_next_codepoint () ++cpp_display_width_computation::process_next_codepoint (cpp_decoded_char *out) + { + cppchar_t c; + int next_width; + ++ if (out) ++ out->m_start_byte = m_next; ++ + if (*m_next == '\t') + { + ++m_next; + --m_bytes_left; +- next_width = m_tabstop - (m_display_cols % m_tabstop); ++ next_width = m_policy.m_tabstop - (m_display_cols % m_policy.m_tabstop); ++ if (out) ++ { ++ out->m_ch = '\t'; ++ out->m_valid_ch = true; ++ } + } + else if (one_utf8_to_cppchar ((const uchar **) &m_next, &m_bytes_left, &c) + != 0) +@@ -2318,14 +2331,24 @@ cpp_display_width_computation::process_n + of one. */ + ++m_next; + --m_bytes_left; +- next_width = 1; ++ next_width = m_policy.m_undecoded_byte_width; ++ if (out) ++ out->m_valid_ch = false; + } + else + { + /* one_utf8_to_cppchar() has updated m_next and m_bytes_left for us. */ +- next_width = cpp_wcwidth (c); ++ next_width = m_policy.m_width_cb (c); ++ if (out) ++ { ++ out->m_ch = c; ++ out->m_valid_ch = true; ++ } + } + ++ if (out) ++ out->m_next_byte = m_next; ++ + m_display_cols += next_width; + return next_width; + } +@@ -2341,7 +2364,7 @@ cpp_display_width_computation::advance_d + const int start = m_display_cols; + const int target = start + n; + while (m_display_cols < target && !done ()) +- process_next_codepoint (); ++ process_next_codepoint (NULL); + return m_display_cols - start; + } + +@@ -2349,29 +2372,33 @@ cpp_display_width_computation::advance_d + how many display columns are occupied by the first COLUMN bytes. COLUMN + may exceed DATA_LENGTH, in which case the phantom bytes at the end are + treated as if they have display width 1. Tabs are expanded to the next tab +- stop, relative to the start of DATA. */ ++ stop, relative to the start of DATA, and non-printable-ASCII characters ++ will be escaped as per POLICY. */ + + int + cpp_byte_column_to_display_column (const char *data, int data_length, +- int column, int tabstop) ++ int column, ++ const cpp_char_column_policy &policy) + { + const int offset = MAX (0, column - data_length); +- cpp_display_width_computation dw (data, column - offset, tabstop); ++ cpp_display_width_computation dw (data, column - offset, policy); + while (!dw.done ()) +- dw.process_next_codepoint (); ++ dw.process_next_codepoint (NULL); + return dw.display_cols_processed () + offset; + } + + /* For the string of length DATA_LENGTH bytes that begins at DATA, compute + the least number of bytes that will result in at least DISPLAY_COL display + columns. The return value may exceed DATA_LENGTH if the entire string does +- not occupy enough display columns. */ ++ not occupy enough display columns. Non-printable-ASCII characters ++ will be escaped as per POLICY. */ + + int + cpp_display_column_to_byte_column (const char *data, int data_length, +- int display_col, int tabstop) ++ int display_col, ++ const cpp_char_column_policy &policy) + { +- cpp_display_width_computation dw (data, data_length, tabstop); ++ cpp_display_width_computation dw (data, data_length, policy); + const int avail_display = dw.advance_display_cols (display_col); + return dw.bytes_processed () + MAX (0, display_col - avail_display); + } +diff --git a/libcpp/errors.c b/libcpp/errors.c +--- a/libcpp/errors.c 2020-07-22 23:35:18.712399623 -0700 ++++ b/libcpp/errors.c 2021-12-25 01:30:50.681688823 -0800 +@@ -27,6 +27,31 @@ along with this program; see the file CO + #include "cpplib.h" + #include "internal.h" + ++/* Get a location_t for the current location in PFILE, ++ generally that of the previously lexed token. */ ++ ++location_t ++cpp_diagnostic_get_current_location (cpp_reader *pfile) ++{ ++ if (CPP_OPTION (pfile, traditional)) ++ { ++ if (pfile->state.in_directive) ++ return pfile->directive_line; ++ else ++ return pfile->line_table->highest_line; ++ } ++ /* We don't want to refer to a token before the beginning of the ++ current run -- that is invalid. */ ++ else if (pfile->cur_token == pfile->cur_run->base) ++ { ++ return 0; ++ } ++ else ++ { ++ return pfile->cur_token[-1].src_loc; ++ } ++} ++ + /* Print a diagnostic at the given location. */ + + ATTRIBUTE_FPTR_PRINTF(5,0) +@@ -52,25 +77,7 @@ cpp_diagnostic (cpp_reader * pfile, enum + enum cpp_warning_reason reason, + const char *msgid, va_list *ap) + { +- location_t src_loc; +- +- if (CPP_OPTION (pfile, traditional)) +- { +- if (pfile->state.in_directive) +- src_loc = pfile->directive_line; +- else +- src_loc = pfile->line_table->highest_line; +- } +- /* We don't want to refer to a token before the beginning of the +- current run -- that is invalid. */ +- else if (pfile->cur_token == pfile->cur_run->base) +- { +- src_loc = 0; +- } +- else +- { +- src_loc = pfile->cur_token[-1].src_loc; +- } ++ location_t src_loc = cpp_diagnostic_get_current_location (pfile); + rich_location richloc (pfile->line_table, src_loc); + return cpp_diagnostic_at (pfile, level, reason, &richloc, msgid, ap); + } +@@ -142,6 +149,43 @@ cpp_warning_syshdr (cpp_reader * pfile, + + va_end (ap); + return ret; ++} ++ ++/* As cpp_warning above, but use RICHLOC as the location of the diagnostic. */ ++ ++bool cpp_warning_at (cpp_reader *pfile, enum cpp_warning_reason reason, ++ rich_location *richloc, const char *msgid, ...) ++{ ++ va_list ap; ++ bool ret; ++ ++ va_start (ap, msgid); ++ ++ ret = cpp_diagnostic_at (pfile, CPP_DL_WARNING, reason, richloc, ++ msgid, &ap); ++ ++ va_end (ap); ++ return ret; ++ ++} ++ ++/* As cpp_pedwarning above, but use RICHLOC as the location of the ++ diagnostic. */ ++ ++bool ++cpp_pedwarning_at (cpp_reader * pfile, enum cpp_warning_reason reason, ++ rich_location *richloc, const char *msgid, ...) ++{ ++ va_list ap; ++ bool ret; ++ ++ va_start (ap, msgid); ++ ++ ret = cpp_diagnostic_at (pfile, CPP_DL_PEDWARN, reason, richloc, ++ msgid, &ap); ++ ++ va_end (ap); ++ return ret; + } + + /* Print a diagnostic at a specific location. */ +diff --git a/libcpp/include/cpplib.h b/libcpp/include/cpplib.h +--- a/libcpp/include/cpplib.h 2021-12-25 01:29:12.931317107 -0800 ++++ b/libcpp/include/cpplib.h 2021-12-25 01:30:50.685688757 -0800 +@@ -1176,6 +1176,14 @@ extern bool cpp_warning_syshdr (cpp_read + const char *msgid, ...) + ATTRIBUTE_PRINTF_3; + ++/* As their counterparts above, but use RICHLOC. */ ++extern bool cpp_warning_at (cpp_reader *, enum cpp_warning_reason, ++ rich_location *richloc, const char *msgid, ...) ++ ATTRIBUTE_PRINTF_4; ++extern bool cpp_pedwarning_at (cpp_reader *, enum cpp_warning_reason, ++ rich_location *richloc, const char *msgid, ...) ++ ATTRIBUTE_PRINTF_4; ++ + /* Output a diagnostic with "MSGID: " preceding the + error string of errno. No location is printed. */ + extern bool cpp_errno (cpp_reader *, enum cpp_diagnostic_level, +@@ -1320,42 +1328,95 @@ extern const char * cpp_get_userdef_suff + + /* In charset.c */ + ++/* The result of attempting to decode a run of UTF-8 bytes. */ ++ ++struct cpp_decoded_char ++{ ++ const char *m_start_byte; ++ const char *m_next_byte; ++ ++ bool m_valid_ch; ++ cppchar_t m_ch; ++}; ++ ++/* Information for mapping between code points and display columns. ++ ++ This is a tabstop value, along with a callback for getting the ++ widths of characters. Normally this callback is cpp_wcwidth, but we ++ support other schemes for escaping non-ASCII unicode as a series of ++ ASCII chars when printing the user's source code in diagnostic-show-locus.c ++ ++ For example, consider: ++ - the Unicode character U+03C0 "GREEK SMALL LETTER PI" (UTF-8: 0xCF 0x80) ++ - the Unicode character U+1F642 "SLIGHTLY SMILING FACE" ++ (UTF-8: 0xF0 0x9F 0x99 0x82) ++ - the byte 0xBF (a stray trailing byte of a UTF-8 character) ++ Normally U+03C0 would occupy one display column, U+1F642 ++ would occupy two display columns, and the stray byte would be ++ printed verbatim as one display column. ++ ++ However when escaping them as unicode code points as "" ++ and "" they occupy 8 and 9 display columns respectively, ++ and when escaping them as bytes as "<80>" and "<9F><99><82>" ++ they occupy 8 and 16 display columns respectively. In both cases ++ the stray byte is escaped to as 4 display columns. */ ++ ++struct cpp_char_column_policy ++{ ++ cpp_char_column_policy (int tabstop, ++ int (*width_cb) (cppchar_t c)) ++ : m_tabstop (tabstop), ++ m_undecoded_byte_width (1), ++ m_width_cb (width_cb) ++ {} ++ ++ int m_tabstop; ++ /* Width in display columns of a stray byte that isn't decodable ++ as UTF-8. */ ++ int m_undecoded_byte_width; ++ int (*m_width_cb) (cppchar_t c); ++}; ++ + /* A class to manage the state while converting a UTF-8 sequence to cppchar_t + and computing the display width one character at a time. */ + class cpp_display_width_computation { + public: + cpp_display_width_computation (const char *data, int data_length, +- int tabstop); ++ const cpp_char_column_policy &policy); + const char *next_byte () const { return m_next; } + int bytes_processed () const { return m_next - m_begin; } + int bytes_left () const { return m_bytes_left; } + bool done () const { return !bytes_left (); } + int display_cols_processed () const { return m_display_cols; } + +- int process_next_codepoint (); ++ int process_next_codepoint (cpp_decoded_char *out); + int advance_display_cols (int n); + + private: + const char *const m_begin; + const char *m_next; + size_t m_bytes_left; +- const int m_tabstop; ++ const cpp_char_column_policy &m_policy; + int m_display_cols; + }; + + /* Convenience functions that are simple use cases for class + cpp_display_width_computation. Tab characters will be expanded to spaces +- as determined by TABSTOP. */ ++ as determined by POLICY.m_tabstop, and non-printable-ASCII characters ++ will be escaped as per POLICY. */ ++ + int cpp_byte_column_to_display_column (const char *data, int data_length, +- int column, int tabstop); ++ int column, ++ const cpp_char_column_policy &policy); + inline int cpp_display_width (const char *data, int data_length, +- int tabstop) ++ const cpp_char_column_policy &policy) + { + return cpp_byte_column_to_display_column (data, data_length, data_length, +- tabstop); ++ policy); + } + int cpp_display_column_to_byte_column (const char *data, int data_length, +- int display_col, int tabstop); ++ int display_col, ++ const cpp_char_column_policy &policy); + int cpp_wcwidth (cppchar_t c); + + #endif /* ! LIBCPP_CPPLIB_H */ +diff --git a/libcpp/include/line-map.h b/libcpp/include/line-map.h +--- a/libcpp/include/line-map.h 2020-07-22 23:35:18.712399623 -0700 ++++ b/libcpp/include/line-map.h 2021-12-25 01:30:50.685688757 -0800 +@@ -1732,6 +1732,18 @@ class rich_location + const diagnostic_path *get_path () const { return m_path; } + void set_path (const diagnostic_path *path) { m_path = path; } + ++ /* A flag for hinting that the diagnostic involves character encoding ++ issues, and thus that it will be helpful to the user if we show some ++ representation of how the characters in the pertinent source lines ++ are encoded. ++ The default is false (i.e. do not escape). ++ When set to true, non-ASCII bytes in the pertinent source lines will ++ be escaped in a manner controlled by the user-supplied option ++ -fdiagnostics-escape-format=, so that the user can better understand ++ what's going on with the encoding in their source file. */ ++ bool escape_on_output_p () const { return m_escape_on_output; } ++ void set_escape_on_output (bool flag) { m_escape_on_output = flag; } ++ + private: + bool reject_impossible_fixit (location_t where); + void stop_supporting_fixits (); +@@ -1758,6 +1770,7 @@ protected: + bool m_fixits_cannot_be_auto_applied; + + const diagnostic_path *m_path; ++ bool m_escape_on_output; + }; + + /* A struct for the result of range_label::get_text: a NUL-terminated buffer +diff --git a/libcpp/internal.h b/libcpp/internal.h +--- a/libcpp/internal.h 2020-07-22 23:35:18.712399623 -0700 ++++ b/libcpp/internal.h 2021-12-25 01:30:50.685688757 -0800 +@@ -758,6 +758,9 @@ struct _cpp_dir_only_callbacks + extern void _cpp_preprocess_dir_only (cpp_reader *, + const struct _cpp_dir_only_callbacks *); + ++/* In errors.c */ ++extern location_t cpp_diagnostic_get_current_location (cpp_reader *); ++ + /* In traditional.c. */ + extern bool _cpp_scan_out_logical_line (cpp_reader *, cpp_macro *, bool); + extern bool _cpp_read_logical_line_trad (cpp_reader *); +@@ -946,6 +949,26 @@ int linemap_get_expansion_line (class li + const char* linemap_get_expansion_filename (class line_maps *, + location_t); + ++/* A subclass of rich_location for emitting a diagnostic ++ at the current location of the reader, but flagging ++ it with set_escape_on_output (true). */ ++class encoding_rich_location : public rich_location ++{ ++ public: ++ encoding_rich_location (cpp_reader *pfile) ++ : rich_location (pfile->line_table, ++ cpp_diagnostic_get_current_location (pfile)) ++ { ++ set_escape_on_output (true); ++ } ++ ++ encoding_rich_location (cpp_reader *pfile, location_t loc) ++ : rich_location (pfile->line_table, loc) ++ { ++ set_escape_on_output (true); ++ } ++}; ++ + #ifdef __cplusplus + } + #endif +diff --git a/libcpp/lex.c b/libcpp/lex.c +--- a/libcpp/lex.c 2021-12-24 20:23:45.568762024 -0800 ++++ b/libcpp/lex.c 2021-12-25 01:30:50.685688757 -0800 +@@ -1268,7 +1268,11 @@ skip_whitespace (cpp_reader *pfile, cppc + while (is_nvspace (c)); + + if (saw_NUL) +- cpp_error (pfile, CPP_DL_WARNING, "null character(s) ignored"); ++ { ++ encoding_rich_location rich_loc (pfile); ++ cpp_error_at (pfile, CPP_DL_WARNING, &rich_loc, ++ "null character(s) ignored"); ++ } + + buffer->cur--; + } +@@ -1297,6 +1301,28 @@ warn_about_normalization (cpp_reader *pf + if (CPP_OPTION (pfile, warn_normalize) < NORMALIZE_STATE_RESULT (s) + && !pfile->state.skipping) + { ++ location_t loc = token->src_loc; ++ ++ /* If possible, create a location range for the token. */ ++ if (loc >= RESERVED_LOCATION_COUNT ++ && token->type != CPP_EOF ++ /* There must be no line notes to process. */ ++ && (!(pfile->buffer->cur ++ >= pfile->buffer->notes[pfile->buffer->cur_note].pos ++ && !pfile->overlaid_buffer))) ++ { ++ source_range tok_range; ++ tok_range.m_start = loc; ++ tok_range.m_finish ++ = linemap_position_for_column (pfile->line_table, ++ CPP_BUF_COLUMN (pfile->buffer, ++ pfile->buffer->cur)); ++ loc = COMBINE_LOCATION_DATA (pfile->line_table, ++ loc, tok_range, NULL); ++ } ++ ++ encoding_rich_location rich_loc (pfile, loc); ++ + /* Make sure that the token is printed using UCNs, even + if we'd otherwise happily print UTF-8. */ + unsigned char *buf = XNEWVEC (unsigned char, cpp_token_len (token)); +@@ -1304,11 +1330,11 @@ warn_about_normalization (cpp_reader *pf + + sz = cpp_spell_token (pfile, token, buf, false) - buf; + if (NORMALIZE_STATE_RESULT (s) == normalized_C) +- cpp_warning_with_line (pfile, CPP_W_NORMALIZE, token->src_loc, 0, +- "`%.*s' is not in NFKC", (int) sz, buf); ++ cpp_warning_at (pfile, CPP_W_NORMALIZE, &rich_loc, ++ "`%.*s' is not in NFKC", (int) sz, buf); + else +- cpp_warning_with_line (pfile, CPP_W_NORMALIZE, token->src_loc, 0, +- "`%.*s' is not in NFC", (int) sz, buf); ++ cpp_warning_at (pfile, CPP_W_NORMALIZE, &rich_loc, ++ "`%.*s' is not in NFC", (int) sz, buf); + free (buf); + } + } +diff --git a/libcpp/line-map.c b/libcpp/line-map.c +--- a/libcpp/line-map.c 2020-07-22 23:35:18.712399623 -0700 ++++ b/libcpp/line-map.c 2021-12-25 01:30:50.685688757 -0800 +@@ -2007,7 +2007,8 @@ rich_location::rich_location (line_maps + m_fixit_hints (), + m_seen_impossible_fixit (false), + m_fixits_cannot_be_auto_applied (false), +- m_path (NULL) ++ m_path (NULL), ++ m_escape_on_output (false) + { + add_range (loc, SHOW_RANGE_WITH_CARET, label); + } diff --git a/meta/recipes-devtools/gcc/gcc/0003-CVE-2021-42574.patch b/meta/recipes-devtools/gcc/gcc/0003-CVE-2021-42574.patch new file mode 100644 index 0000000000..6bfaf8402d --- /dev/null +++ b/meta/recipes-devtools/gcc/gcc/0003-CVE-2021-42574.patch @@ -0,0 +1,1724 @@ +From 51c500269bf53749b107807d84271385fad35628 Mon Sep 17 00:00:00 2001 +From: Marek Polacek +Date: Wed, 6 Oct 2021 14:33:59 -0400 +Subject: [PATCH] libcpp: Implement -Wbidi-chars for CVE-2021-42574 [PR103026] + +From a link below: +"An issue was discovered in the Bidirectional Algorithm in the Unicode +Specification through 14.0. It permits the visual reordering of +characters via control sequences, which can be used to craft source code +that renders different logic than the logical ordering of tokens +ingested by compilers and interpreters. Adversaries can leverage this to +encode source code for compilers accepting Unicode such that targeted +vulnerabilities are introduced invisibly to human reviewers." + +More info: +https://nvd.nist.gov/vuln/detail/CVE-2021-42574 +https://trojansource.codes/ + +This is not a compiler bug. However, to mitigate the problem, this patch +implements -Wbidi-chars=[none|unpaired|any] to warn about possibly +misleading Unicode bidirectional control characters the preprocessor may +encounter. + +The default is =unpaired, which warns about improperly terminated +bidirectional control characters; e.g. a LRE without its corresponding PDF. +The level =any warns about any use of bidirectional control characters. + +This patch handles both UCNs and UTF-8 characters. UCNs designating +bidi characters in identifiers are accepted since r204886. Then r217144 +enabled -fextended-identifiers by default. Extended characters in C/C++ +identifiers have been accepted since r275979. However, this patch still +warns about mixing UTF-8 and UCN bidi characters; there seems to be no +good reason to allow mixing them. + +We warn in different contexts: comments (both C and C++-style), string +literals, character constants, and identifiers. Expectedly, UCNs are ignored +in comments and raw string literals. The bidirectional control characters +can nest so this patch handles that as well. + +I have not included nor tested this at all with Fortran (which also has +string literals and line comments). + +Dave M. posted patches improving diagnostic involving Unicode characters. +This patch does not make use of this new infrastructure yet. + + PR preprocessor/103026 + +gcc/c-family/ChangeLog: + + * c.opt (Wbidi-chars, Wbidi-chars=): New option. + +gcc/ChangeLog: + + * doc/invoke.texi: Document -Wbidi-chars. + +libcpp/ChangeLog: + + * include/cpplib.h (enum cpp_bidirectional_level): New. + (struct cpp_options): Add cpp_warn_bidirectional. + (enum cpp_warning_reason): Add CPP_W_BIDIRECTIONAL. + * internal.h (struct cpp_reader): Add warn_bidi_p member + function. + * init.c (cpp_create_reader): Set cpp_warn_bidirectional. + * lex.c (bidi): New namespace. + (get_bidi_utf8): New function. + (get_bidi_ucn): Likewise. + (maybe_warn_bidi_on_close): Likewise. + (maybe_warn_bidi_on_char): Likewise. + (_cpp_skip_block_comment): Implement warning about bidirectional + control characters. + (skip_line_comment): Likewise. + (forms_identifier_p): Likewise. + (lex_identifier): Likewise. + (lex_string): Likewise. + (lex_raw_string): Likewise. + +gcc/testsuite/ChangeLog: + + * c-c++-common/Wbidi-chars-1.c: New test. + * c-c++-common/Wbidi-chars-2.c: New test. + * c-c++-common/Wbidi-chars-3.c: New test. + * c-c++-common/Wbidi-chars-4.c: New test. + * c-c++-common/Wbidi-chars-5.c: New test. + * c-c++-common/Wbidi-chars-6.c: New test. + * c-c++-common/Wbidi-chars-7.c: New test. + * c-c++-common/Wbidi-chars-8.c: New test. + * c-c++-common/Wbidi-chars-9.c: New test. + * c-c++-common/Wbidi-chars-10.c: New test. + * c-c++-common/Wbidi-chars-11.c: New test. + * c-c++-common/Wbidi-chars-12.c: New test. + * c-c++-common/Wbidi-chars-13.c: New test. + * c-c++-common/Wbidi-chars-14.c: New test. + * c-c++-common/Wbidi-chars-15.c: New test. + * c-c++-common/Wbidi-chars-16.c: New test. + * c-c++-common/Wbidi-chars-17.c: New test. + +CVE: CVE-2021-42574 +Upstream-Status: Backport [https://gcc.gnu.org/git/gitweb.cgi?p=gcc.git;h=51c500269bf53749b107807d84271385fad35628] +Signed-off-by: Pgowda + +--- + gcc/c-family/c.opt | 24 ++ + gcc/doc/invoke.texi | 21 +- + gcc/testsuite/c-c++-common/Wbidi-chars-1.c | 12 + + gcc/testsuite/c-c++-common/Wbidi-chars-10.c | 27 ++ + gcc/testsuite/c-c++-common/Wbidi-chars-11.c | 13 + + gcc/testsuite/c-c++-common/Wbidi-chars-12.c | 19 + + gcc/testsuite/c-c++-common/Wbidi-chars-13.c | 17 + + gcc/testsuite/c-c++-common/Wbidi-chars-14.c | 38 ++ + gcc/testsuite/c-c++-common/Wbidi-chars-15.c | 59 +++ + gcc/testsuite/c-c++-common/Wbidi-chars-16.c | 26 ++ + gcc/testsuite/c-c++-common/Wbidi-chars-17.c | 30 ++ + gcc/testsuite/c-c++-common/Wbidi-chars-2.c | 9 + + gcc/testsuite/c-c++-common/Wbidi-chars-3.c | 11 + + gcc/testsuite/c-c++-common/Wbidi-chars-4.c | 188 +++++++++ + gcc/testsuite/c-c++-common/Wbidi-chars-5.c | 188 +++++++++ + gcc/testsuite/c-c++-common/Wbidi-chars-6.c | 155 ++++++++ + gcc/testsuite/c-c++-common/Wbidi-chars-7.c | 9 + + gcc/testsuite/c-c++-common/Wbidi-chars-8.c | 13 + + gcc/testsuite/c-c++-common/Wbidi-chars-9.c | 29 ++ + libcpp/include/cpplib.h | 18 +- + libcpp/init.c | 1 + + libcpp/internal.h | 7 + + libcpp/lex.c | 408 +++++++++++++++++++- + 23 files changed, 1315 insertions(+), 7 deletions(-) + create mode 100644 gcc/testsuite/c-c++-common/Wbidi-chars-1.c + create mode 100644 gcc/testsuite/c-c++-common/Wbidi-chars-10.c + create mode 100644 gcc/testsuite/c-c++-common/Wbidi-chars-11.c + create mode 100644 gcc/testsuite/c-c++-common/Wbidi-chars-12.c + create mode 100644 gcc/testsuite/c-c++-common/Wbidi-chars-13.c + create mode 100644 gcc/testsuite/c-c++-common/Wbidi-chars-14.c + create mode 100644 gcc/testsuite/c-c++-common/Wbidi-chars-15.c + create mode 100644 gcc/testsuite/c-c++-common/Wbidi-chars-16.c + create mode 100644 gcc/testsuite/c-c++-common/Wbidi-chars-17.c + create mode 100644 gcc/testsuite/c-c++-common/Wbidi-chars-2.c + create mode 100644 gcc/testsuite/c-c++-common/Wbidi-chars-3.c + create mode 100644 gcc/testsuite/c-c++-common/Wbidi-chars-4.c + create mode 100644 gcc/testsuite/c-c++-common/Wbidi-chars-5.c + create mode 100644 gcc/testsuite/c-c++-common/Wbidi-chars-6.c + create mode 100644 gcc/testsuite/c-c++-common/Wbidi-chars-7.c + create mode 100644 gcc/testsuite/c-c++-common/Wbidi-chars-8.c + create mode 100644 gcc/testsuite/c-c++-common/Wbidi-chars-9.c + +diff --git a/gcc/c-family/c.opt b/gcc/c-family/c.opt +--- a/gcc/c-family/c.opt 2021-12-25 01:29:12.915317374 -0800 ++++ b/gcc/c-family/c.opt 2021-12-25 01:36:22.040018701 -0800 +@@ -350,6 +350,30 @@ Wbad-function-cast + C ObjC Var(warn_bad_function_cast) Warning + Warn about casting functions to incompatible types. + ++Wbidi-chars ++C ObjC C++ ObjC++ Warning Alias(Wbidi-chars=,any,none) ++; ++ ++Wbidi-chars= ++C ObjC C++ ObjC++ RejectNegative Joined Warning CPP(cpp_warn_bidirectional) CppReason(CPP_W_BIDIRECTIONAL) Var(warn_bidirectional) Init(bidirectional_unpaired) Enum(cpp_bidirectional_level) ++-Wbidi-chars=[none|unpaired|any] Warn about UTF-8 bidirectional control characters. ++ ++; Required for these enum values. ++SourceInclude ++cpplib.h ++ ++Enum ++Name(cpp_bidirectional_level) Type(int) UnknownError(argument %qs to %<-Wbidi-chars%> not recognized) ++ ++EnumValue ++Enum(cpp_bidirectional_level) String(none) Value(bidirectional_none) ++ ++EnumValue ++Enum(cpp_bidirectional_level) String(unpaired) Value(bidirectional_unpaired) ++ ++EnumValue ++Enum(cpp_bidirectional_level) String(any) Value(bidirectional_any) ++ + Wbool-compare + C ObjC C++ ObjC++ Var(warn_bool_compare) Warning LangEnabledBy(C ObjC C++ ObjC++,Wall) + Warn about boolean expression compared with an integer value different from true/false. +diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi +--- a/gcc/doc/invoke.texi 2021-12-25 01:35:33.284883488 -0800 ++++ b/gcc/doc/invoke.texi 2021-12-25 01:36:22.048018559 -0800 +@@ -310,7 +310,9 @@ Objective-C and Objective-C++ Dialects}. + -Warith-conversion @gol + -Warray-bounds -Warray-bounds=@var{n} @gol + -Wno-attributes -Wattribute-alias=@var{n} -Wno-attribute-alias @gol +--Wno-attribute-warning -Wbool-compare -Wbool-operation @gol ++-Wno-attribute-warning @gol ++-Wbidi-chars=@r{[}none@r{|}unpaired@r{|}any@r{]} @gol ++-Wbool-compare -Wbool-operation @gol + -Wno-builtin-declaration-mismatch @gol + -Wno-builtin-macro-redefined -Wc90-c99-compat -Wc99-c11-compat @gol + -Wc11-c2x-compat @gol +@@ -6860,6 +6862,23 @@ Attributes considered include @code{allo + This is the default. You can disable these warnings with either + @option{-Wno-attribute-alias} or @option{-Wattribute-alias=0}. + ++@item -Wbidi-chars=@r{[}none@r{|}unpaired@r{|}any@r{]} ++@opindex Wbidi-chars= ++@opindex Wbidi-chars ++@opindex Wno-bidi-chars ++Warn about possibly misleading UTF-8 bidirectional control characters in ++comments, string literals, character constants, and identifiers. Such ++characters can change left-to-right writing direction into right-to-left ++(and vice versa), which can cause confusion between the logical order and ++visual order. This may be dangerous; for instance, it may seem that a piece ++of code is not commented out, whereas it in fact is. ++ ++There are three levels of warning supported by GCC@. The default is ++@option{-Wbidi-chars=unpaired}, which warns about improperly terminated ++bidi contexts. @option{-Wbidi-chars=none} turns the warning off. ++@option{-Wbidi-chars=any} warns about any use of bidirectional control ++characters. ++ + @item -Wbool-compare + @opindex Wno-bool-compare + @opindex Wbool-compare +diff --git a/gcc/testsuite/c-c++-common/Wbidi-chars-10.c b/gcc/testsuite/c-c++-common/Wbidi-chars-10.c +--- a/gcc/testsuite/c-c++-common/Wbidi-chars-10.c 1969-12-31 16:00:00.000000000 -0800 ++++ b/gcc/testsuite/c-c++-common/Wbidi-chars-10.c 2021-12-25 01:36:22.048018559 -0800 +@@ -0,0 +1,27 @@ ++/* PR preprocessor/103026 */ ++/* { dg-do compile } */ ++/* { dg-options "-Wbidi-chars=unpaired" } */ ++/* More nesting testing. */ ++ ++/* RLE‫ LRI⁦ PDF‬ PDI⁩*/ ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++int LRE_\u202a_PDF_\u202c; ++int LRE_\u202a_PDF_\u202c_LRE_\u202a_PDF_\u202c; ++int LRE_\u202a_LRI_\u2066_PDF_\u202c_PDI_\u2069; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++int RLE_\u202b_RLI_\u2067_PDF_\u202c_PDI_\u2069; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++int RLE_\u202b_RLI_\u2067_PDI_\u2069_PDF_\u202c; ++int FSI_\u2068_LRO_\u202d_PDI_\u2069_PDF_\u202c; ++int FSI_\u2068; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++int FSI_\u2068_PDI_\u2069; ++int FSI_\u2068_FSI_\u2068_PDI_\u2069; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++int RLI_\u2067_RLI_\u2067_RLI_\u2067_RLI_\u2067_RLI_\u2067_RLI_\u2067_RLI_\u2067_PDI_\u2069_PDI_\u2069_PDI_\u2069_PDI_\u2069_PDI_\u2069_PDI_\u2069_PDI_\u2069; ++int RLI_\u2067_RLI_\u2067_RLI_\u2067_RLI_\u2067_RLI_\u2067_RLI_\u2067_RLI_\u2067_PDI_\u2069_PDI_\u2069_PDI_\u2069_PDI_\u2069_PDI_\u2069_PDI_\u2069; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++int RLI_\u2067_RLI_\u2067_RLI_\u2067_RLI_\u2067_RLI_\u2067_RLI_\u2067_RLI_\u2067_PDI_\u2069_PDI_\u2069_PDI_\u2069_PDI_\u2069_PDI_\u2069_PDI_\u2069_PDF_\u202c; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++int RLI_\u2067_RLI_\u2067_RLI_\u2067_RLI_\u2067_FSI_\u2068_PDI_\u2069_PDI_\u2069_PDI_\u2069_PDI_\u2069; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ +diff --git a/gcc/testsuite/c-c++-common/Wbidi-chars-11.c b/gcc/testsuite/c-c++-common/Wbidi-chars-11.c +--- a/gcc/testsuite/c-c++-common/Wbidi-chars-11.c 1969-12-31 16:00:00.000000000 -0800 ++++ b/gcc/testsuite/c-c++-common/Wbidi-chars-11.c 2021-12-25 01:36:22.048018559 -0800 +@@ -0,0 +1,13 @@ ++/* PR preprocessor/103026 */ ++/* { dg-do compile } */ ++/* { dg-options "-Wbidi-chars=unpaired" } */ ++/* Test that we warn when mixing UCN and UTF-8. */ ++ ++int LRE_‪_PDF_\u202c; ++/* { dg-warning "mismatch" "" { target *-*-* } .-1 } */ ++int LRE_\u202a_PDF_‬_; ++/* { dg-warning "mismatch" "" { target *-*-* } .-1 } */ ++const char *s1 = "LRE_‪_PDF_\u202c"; ++/* { dg-warning "mismatch" "" { target *-*-* } .-1 } */ ++const char *s2 = "LRE_\u202a_PDF_‬"; ++/* { dg-warning "mismatch" "" { target *-*-* } .-1 } */ +diff --git a/gcc/testsuite/c-c++-common/Wbidi-chars-12.c b/gcc/testsuite/c-c++-common/Wbidi-chars-12.c +--- a/gcc/testsuite/c-c++-common/Wbidi-chars-12.c 1969-12-31 16:00:00.000000000 -0800 ++++ b/gcc/testsuite/c-c++-common/Wbidi-chars-12.c 2021-12-25 01:36:22.048018559 -0800 +@@ -0,0 +1,19 @@ ++/* PR preprocessor/103026 */ ++/* { dg-do compile { target { c || c++11 } } } */ ++/* { dg-options "-Wbidi-chars=any" } */ ++/* Test raw strings. */ ++ ++const char *s1 = R"(a b c LRE‪ 1 2 3 PDF‬ x y z)"; ++/* { dg-warning "U\\+202A" "" { target *-*-* } .-1 } */ ++const char *s2 = R"(a b c RLE‫ 1 2 3 PDF‬ x y z)"; ++/* { dg-warning "U\\+202B" "" { target *-*-* } .-1 } */ ++const char *s3 = R"(a b c LRO‭ 1 2 3 PDF‬ x y z)"; ++/* { dg-warning "U\\+202D" "" { target *-*-* } .-1 } */ ++const char *s4 = R"(a b c RLO‮ 1 2 3 PDF‬ x y z)"; ++/* { dg-warning "U\\+202E" "" { target *-*-* } .-1 } */ ++const char *s7 = R"(a b c FSI⁨ 1 2 3 PDI⁩ x y) z"; ++/* { dg-warning "U\\+2068" "" { target *-*-* } .-1 } */ ++const char *s8 = R"(a b c PDI⁩ x y )z"; ++/* { dg-warning "U\\+2069" "" { target *-*-* } .-1 } */ ++const char *s9 = R"(a b c PDF‬ x y z)"; ++/* { dg-warning "U\\+202C" "" { target *-*-* } .-1 } */ +diff --git a/gcc/testsuite/c-c++-common/Wbidi-chars-13.c b/gcc/testsuite/c-c++-common/Wbidi-chars-13.c +--- a/gcc/testsuite/c-c++-common/Wbidi-chars-13.c 1969-12-31 16:00:00.000000000 -0800 ++++ b/gcc/testsuite/c-c++-common/Wbidi-chars-13.c 2021-12-25 01:36:22.048018559 -0800 +@@ -0,0 +1,17 @@ ++/* PR preprocessor/103026 */ ++/* { dg-do compile { target { c || c++11 } } } */ ++/* { dg-options "-Wbidi-chars=unpaired" } */ ++/* Test raw strings. */ ++ ++const char *s1 = R"(a b c LRE‪ 1 2 3)"; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++const char *s2 = R"(a b c RLE‫ 1 2 3)"; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++const char *s3 = R"(a b c LRO‭ 1 2 3)"; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++const char *s4 = R"(a b c FSI⁨ 1 2 3)"; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++const char *s5 = R"(a b c LRI⁦ 1 2 3)"; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++const char *s6 = R"(a b c RLI⁧ 1 2 3)"; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ +diff --git a/gcc/testsuite/c-c++-common/Wbidi-chars-14.c b/gcc/testsuite/c-c++-common/Wbidi-chars-14.c +--- a/gcc/testsuite/c-c++-common/Wbidi-chars-14.c 1969-12-31 16:00:00.000000000 -0800 ++++ b/gcc/testsuite/c-c++-common/Wbidi-chars-14.c 2021-12-25 01:36:22.048018559 -0800 +@@ -0,0 +1,38 @@ ++/* PR preprocessor/103026 */ ++/* { dg-do compile } */ ++/* { dg-options "-Wbidi-chars=unpaired" } */ ++/* Test PDI handling, which also pops any subsequent LREs, RLEs, LROs, ++ or RLOs. */ ++ ++/* LRI_⁦_LRI_⁦_RLE_‫_RLE_‫_RLE_‫_PDI_⁩*/ ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++// LRI_⁦_RLE_‫_RLE_‫_RLE_‫_PDI_⁩ ++// LRI_⁦_RLO_‮_RLE_‫_RLE_‫_PDI_⁩ ++// LRI_⁦_RLO_‮_RLE_‫_PDI_⁩ ++// FSI_⁨_RLO_‮_PDI_⁩ ++// FSI_⁨_FSI_⁨_RLO_‮_PDI_⁩ ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++ ++int LRI_\u2066_LRI_\u2066_LRE_\u202a_LRE_\u202a_LRE_\u202a_PDI_\u2069; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++int LRI_\u2066_LRI_\u2066_LRE_\u202a_LRE_\u202a_LRE_\u202a_PDI_\u2069_PDI_\u2069; ++int LRI_\u2066_LRI_\u2066_LRI_\u2066_LRE_\u202a_LRE_\u202a_LRE_\u202a_PDI_\u2069_PDI_\u2069; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++int PDI_\u2069; ++int LRI_\u2066_PDI_\u2069; ++int RLI_\u2067_PDI_\u2069; ++int LRE_\u202a_LRI_\u2066_PDI_\u2069; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++int LRI_\u2066_LRE_\u202a_PDF_\u202c_PDI_\u2069; ++int LRI_\u2066_LRE_\u202a_LRE_\u202a_PDF_\u202c_PDI_\u2069; ++int RLI_\u2067_LRI_\u2066_LRE_\u202a_LRE_\u202a_PDF_\u202c_PDI_\u2069; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++int FSI_\u2068_LRI_\u2066_LRE_\u202a_LRE_\u202a_PDF_\u202c_PDI_\u2069; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++int RLO_\u202e_PDI_\u2069; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++int RLI_\u2067_PDI_\u2069_RLI_\u2067; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++int FSI_\u2068_PDF_\u202c_PDI_\u2069; ++int FSI_\u2068_FSI_\u2068_PDF_\u202c_PDI_\u2069; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ +diff --git a/gcc/testsuite/c-c++-common/Wbidi-chars-15.c b/gcc/testsuite/c-c++-common/Wbidi-chars-15.c +--- a/gcc/testsuite/c-c++-common/Wbidi-chars-15.c 1969-12-31 16:00:00.000000000 -0800 ++++ b/gcc/testsuite/c-c++-common/Wbidi-chars-15.c 2021-12-25 01:36:22.048018559 -0800 +@@ -0,0 +1,59 @@ ++/* PR preprocessor/103026 */ ++/* { dg-do compile } */ ++/* { dg-options "-Wbidi-chars=unpaired" } */ ++/* Test unpaired bidi control chars in multiline comments. */ ++ ++/* ++ * LRE‪ end ++ */ ++/* { dg-warning "unpaired" "" { target *-*-* } .-2 } */ ++/* ++ * RLE‫ end ++ */ ++/* { dg-warning "unpaired" "" { target *-*-* } .-2 } */ ++/* ++ * LRO‭ end ++ */ ++/* { dg-warning "unpaired" "" { target *-*-* } .-2 } */ ++/* ++ * RLO‮ end ++ */ ++/* { dg-warning "unpaired" "" { target *-*-* } .-2 } */ ++/* ++ * LRI⁦ end ++ */ ++/* { dg-warning "unpaired" "" { target *-*-* } .-2 } */ ++/* ++ * RLI⁧ end ++ */ ++/* { dg-warning "unpaired" "" { target *-*-* } .-2 } */ ++/* ++ * FSI⁨ end ++ */ ++/* { dg-warning "unpaired" "" { target *-*-* } .-2 } */ ++/* LRE‪ ++ PDF‬ */ ++/* { dg-warning "unpaired" "" { target *-*-* } .-2 } */ ++/* FSI⁨ ++ PDI⁩ */ ++/* { dg-warning "unpaired" "" { target *-*-* } .-2 } */ ++ ++/* LRE<‪> ++ * ++ */ ++/* { dg-warning "unpaired" "" { target *-*-* } .-3 } */ ++ ++/* ++ * LRE<‪> ++ */ ++/* { dg-warning "unpaired" "" { target *-*-* } .-2 } */ ++ ++/* ++ * ++ * LRE<‪> */ ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++ ++/* RLI<⁧> */ /* PDI<⁩> */ ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++/* LRE<‪> */ /* PDF<‬> */ ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ +diff --git a/gcc/testsuite/c-c++-common/Wbidi-chars-16.c b/gcc/testsuite/c-c++-common/Wbidi-chars-16.c +--- a/gcc/testsuite/c-c++-common/Wbidi-chars-16.c 1969-12-31 16:00:00.000000000 -0800 ++++ b/gcc/testsuite/c-c++-common/Wbidi-chars-16.c 2021-12-25 01:36:22.048018559 -0800 +@@ -0,0 +1,26 @@ ++/* PR preprocessor/103026 */ ++/* { dg-do compile } */ ++/* { dg-options "-Wbidi-chars=any" } */ ++/* Test LTR/RTL chars. */ ++ ++/* LTR<‎> */ ++/* { dg-warning "U\\+200E" "" { target *-*-* } .-1 } */ ++// LTR<‎> ++/* { dg-warning "U\\+200E" "" { target *-*-* } .-1 } */ ++/* RTL<‏> */ ++/* { dg-warning "U\\+200F" "" { target *-*-* } .-1 } */ ++// RTL<‏> ++/* { dg-warning "U\\+200F" "" { target *-*-* } .-1 } */ ++ ++const char *s1 = "LTR<‎>"; ++/* { dg-warning "U\\+200E" "" { target *-*-* } .-1 } */ ++const char *s2 = "LTR\u200e"; ++/* { dg-warning "U\\+200E" "" { target *-*-* } .-1 } */ ++const char *s3 = "LTR\u200E"; ++/* { dg-warning "U\\+200E" "" { target *-*-* } .-1 } */ ++const char *s4 = "RTL<‏>"; ++/* { dg-warning "U\\+200F" "" { target *-*-* } .-1 } */ ++const char *s5 = "RTL\u200f"; ++/* { dg-warning "U\\+200F" "" { target *-*-* } .-1 } */ ++const char *s6 = "RTL\u200F"; ++/* { dg-warning "U\\+200F" "" { target *-*-* } .-1 } */ +diff --git a/gcc/testsuite/c-c++-common/Wbidi-chars-17.c b/gcc/testsuite/c-c++-common/Wbidi-chars-17.c +--- a/gcc/testsuite/c-c++-common/Wbidi-chars-17.c 1969-12-31 16:00:00.000000000 -0800 ++++ b/gcc/testsuite/c-c++-common/Wbidi-chars-17.c 2021-12-25 01:36:22.048018559 -0800 +@@ -0,0 +1,30 @@ ++/* PR preprocessor/103026 */ ++/* { dg-do compile } */ ++/* { dg-options "-Wbidi-chars=unpaired" } */ ++/* Test LTR/RTL chars. */ ++ ++/* LTR<‎> */ ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++// LTR<‎> ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++/* RTL<‏> */ ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++// RTL<‏> ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++int ltr_\u200e; ++/* { dg-error "universal character " "" { target *-*-* } .-1 } */ ++int rtl_\u200f; ++/* { dg-error "universal character " "" { target *-*-* } .-1 } */ ++ ++const char *s1 = "LTR<‎>"; ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++const char *s2 = "LTR\u200e"; ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++const char *s3 = "LTR\u200E"; ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++const char *s4 = "RTL<‏>"; ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++const char *s5 = "RTL\u200f"; ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++const char *s6 = "RTL\u200F"; ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ +diff --git a/gcc/testsuite/c-c++-common/Wbidi-chars-1.c b/gcc/testsuite/c-c++-common/Wbidi-chars-1.c +--- a/gcc/testsuite/c-c++-common/Wbidi-chars-1.c 1969-12-31 16:00:00.000000000 -0800 ++++ b/gcc/testsuite/c-c++-common/Wbidi-chars-1.c 2021-12-25 01:36:22.048018559 -0800 +@@ -0,0 +1,12 @@ ++/* PR preprocessor/103026 */ ++/* { dg-do compile } */ ++ ++int main() { ++ int isAdmin = 0; ++ /*‮ } ⁦if (isAdmin)⁩ ⁦ begin admins only */ ++/* { dg-warning "bidirectional" "" { target *-*-* } .-1 } */ ++ __builtin_printf("You are an admin.\n"); ++ /* end admins only ‮ { ⁦*/ ++/* { dg-warning "bidirectional" "" { target *-*-* } .-1 } */ ++ return 0; ++} +diff --git a/gcc/testsuite/c-c++-common/Wbidi-chars-2.c b/gcc/testsuite/c-c++-common/Wbidi-chars-2.c +--- a/gcc/testsuite/c-c++-common/Wbidi-chars-2.c 1969-12-31 16:00:00.000000000 -0800 ++++ b/gcc/testsuite/c-c++-common/Wbidi-chars-2.c 2021-12-25 01:36:22.048018559 -0800 +@@ -0,0 +1,9 @@ ++/* PR preprocessor/103026 */ ++/* { dg-do compile } */ ++ ++int main() { ++ /* Say hello; newline⁧/*/ return 0 ; ++/* { dg-warning "bidirectional" "" { target *-*-* } .-1 } */ ++ __builtin_printf("Hello world.\n"); ++ return 0; ++} +diff --git a/gcc/testsuite/c-c++-common/Wbidi-chars-3.c b/gcc/testsuite/c-c++-common/Wbidi-chars-3.c +--- a/gcc/testsuite/c-c++-common/Wbidi-chars-3.c 1969-12-31 16:00:00.000000000 -0800 ++++ b/gcc/testsuite/c-c++-common/Wbidi-chars-3.c 2021-12-25 01:36:22.048018559 -0800 +@@ -0,0 +1,11 @@ ++/* PR preprocessor/103026 */ ++/* { dg-do compile } */ ++ ++int main() { ++ const char* access_level = "user"; ++ if (__builtin_strcmp(access_level, "user‮ ⁦// Check if admin⁩ ⁦")) { ++/* { dg-warning "bidirectional" "" { target *-*-* } .-1 } */ ++ __builtin_printf("You are an admin.\n"); ++ } ++ return 0; ++} +diff --git a/gcc/testsuite/c-c++-common/Wbidi-chars-4.c b/gcc/testsuite/c-c++-common/Wbidi-chars-4.c +--- a/gcc/testsuite/c-c++-common/Wbidi-chars-4.c 1969-12-31 16:00:00.000000000 -0800 ++++ b/gcc/testsuite/c-c++-common/Wbidi-chars-4.c 2021-12-25 01:36:22.048018559 -0800 +@@ -0,0 +1,188 @@ ++/* PR preprocessor/103026 */ ++/* { dg-do compile } */ ++/* { dg-options "-Wbidi-chars=any -Wno-multichar -Wno-overflow" } */ ++/* Test all bidi chars in various contexts (identifiers, comments, ++ string literals, character constants), both UCN and UTF-8. The bidi ++ chars here are properly terminated, except for the character constants. */ ++ ++/* a b c LRE‪ 1 2 3 PDF‬ x y z */ ++/* { dg-warning "U\\+202A" "" { target *-*-* } .-1 } */ ++/* a b c RLE‫ 1 2 3 PDF‬ x y z */ ++/* { dg-warning "U\\+202B" "" { target *-*-* } .-1 } */ ++/* a b c LRO‭ 1 2 3 PDF‬ x y z */ ++/* { dg-warning "U\\+202D" "" { target *-*-* } .-1 } */ ++/* a b c RLO‮ 1 2 3 PDF‬ x y z */ ++/* { dg-warning "U\\+202E" "" { target *-*-* } .-1 } */ ++/* a b c LRI⁦ 1 2 3 PDI⁩ x y z */ ++/* { dg-warning "U\\+2066" "" { target *-*-* } .-1 } */ ++/* a b c RLI⁧ 1 2 3 PDI⁩ x y */ ++/* { dg-warning "U\\+2067" "" { target *-*-* } .-1 } */ ++/* a b c FSI⁨ 1 2 3 PDI⁩ x y z */ ++/* { dg-warning "U\\+2068" "" { target *-*-* } .-1 } */ ++ ++/* Same but C++ comments instead. */ ++// a b c LRE‪ 1 2 3 PDF‬ x y z ++/* { dg-warning "U\\+202A" "" { target *-*-* } .-1 } */ ++// a b c RLE‫ 1 2 3 PDF‬ x y z ++/* { dg-warning "U\\+202B" "" { target *-*-* } .-1 } */ ++// a b c LRO‭ 1 2 3 PDF‬ x y z ++/* { dg-warning "U\\+202D" "" { target *-*-* } .-1 } */ ++// a b c RLO‮ 1 2 3 PDF‬ x y z ++/* { dg-warning "U\\+202E" "" { target *-*-* } .-1 } */ ++// a b c LRI⁦ 1 2 3 PDI⁩ x y z ++/* { dg-warning "U\\+2066" "" { target *-*-* } .-1 } */ ++// a b c RLI⁧ 1 2 3 PDI⁩ x y ++/* { dg-warning "U\\+2067" "" { target *-*-* } .-1 } */ ++// a b c FSI⁨ 1 2 3 PDI⁩ x y z ++/* { dg-warning "U\\+2068" "" { target *-*-* } .-1 } */ ++ ++/* Here we're closing an unopened context, warn when =any. */ ++/* a b c PDI⁩ x y z */ ++/* { dg-warning "U\\+2069" "" { target *-*-* } .-1 } */ ++/* a b c PDF‬ x y z */ ++/* { dg-warning "U\\+202C" "" { target *-*-* } .-1 } */ ++// a b c PDI⁩ x y z ++/* { dg-warning "U\\+2069" "" { target *-*-* } .-1 } */ ++// a b c PDF‬ x y z ++/* { dg-warning "U\\+202C" "" { target *-*-* } .-1 } */ ++ ++/* Multiline comments. */ ++/* a b c PDI⁩ x y z ++ */ ++/* { dg-warning "U\\+2069" "" { target *-*-* } .-2 } */ ++/* a b c PDF‬ x y z ++ */ ++/* { dg-warning "U\\+202C" "" { target *-*-* } .-2 } */ ++/* first ++ a b c PDI⁩ x y z ++ */ ++/* { dg-warning "U\\+2069" "" { target *-*-* } .-2 } */ ++/* first ++ a b c PDF‬ x y z ++ */ ++/* { dg-warning "U\\+202C" "" { target *-*-* } .-2 } */ ++/* first ++ a b c PDI⁩ x y z */ ++/* { dg-warning "U\\+2069" "" { target *-*-* } .-1 } */ ++/* first ++ a b c PDF‬ x y z */ ++/* { dg-warning "U\\+202C" "" { target *-*-* } .-1 } */ ++ ++void ++g1 () ++{ ++ const char *s1 = "a b c LRE‪ 1 2 3 PDF‬ x y z"; ++/* { dg-warning "U\\+202A" "" { target *-*-* } .-1 } */ ++ const char *s2 = "a b c RLE‫ 1 2 3 PDF‬ x y z"; ++/* { dg-warning "U\\+202B" "" { target *-*-* } .-1 } */ ++ const char *s3 = "a b c LRO‭ 1 2 3 PDF‬ x y z"; ++/* { dg-warning "U\\+202D" "" { target *-*-* } .-1 } */ ++ const char *s4 = "a b c RLO‮ 1 2 3 PDF‬ x y z"; ++/* { dg-warning "U\\+202E" "" { target *-*-* } .-1 } */ ++ const char *s5 = "a b c LRI⁦ 1 2 3 PDI⁩ x y z"; ++/* { dg-warning "U\\+2066" "" { target *-*-* } .-1 } */ ++ const char *s6 = "a b c RLI⁧ 1 2 3 PDI⁩ x y z"; ++/* { dg-warning "U\\+2067" "" { target *-*-* } .-1 } */ ++ const char *s7 = "a b c FSI⁨ 1 2 3 PDI⁩ x y z"; ++/* { dg-warning "U\\+2068" "" { target *-*-* } .-1 } */ ++ const char *s8 = "a b c PDI⁩ x y z"; ++/* { dg-warning "U\\+2069" "" { target *-*-* } .-1 } */ ++ const char *s9 = "a b c PDF‬ x y z"; ++/* { dg-warning "U\\+202C" "" { target *-*-* } .-1 } */ ++ ++ const char *s10 = "a b c LRE\u202a 1 2 3 PDF\u202c x y z"; ++/* { dg-warning "U\\+202A" "" { target *-*-* } .-1 } */ ++ const char *s11 = "a b c LRE\u202A 1 2 3 PDF\u202c x y z"; ++/* { dg-warning "U\\+202A" "" { target *-*-* } .-1 } */ ++ const char *s12 = "a b c RLE\u202b 1 2 3 PDF\u202c x y z"; ++/* { dg-warning "U\\+202B" "" { target *-*-* } .-1 } */ ++ const char *s13 = "a b c RLE\u202B 1 2 3 PDF\u202c x y z"; ++/* { dg-warning "U\\+202B" "" { target *-*-* } .-1 } */ ++ const char *s14 = "a b c LRO\u202d 1 2 3 PDF\u202c x y z"; ++/* { dg-warning "U\\+202D" "" { target *-*-* } .-1 } */ ++ const char *s15 = "a b c LRO\u202D 1 2 3 PDF\u202c x y z"; ++/* { dg-warning "U\\+202D" "" { target *-*-* } .-1 } */ ++ const char *s16 = "a b c RLO\u202e 1 2 3 PDF\u202c x y z"; ++/* { dg-warning "U\\+202E" "" { target *-*-* } .-1 } */ ++ const char *s17 = "a b c RLO\u202E 1 2 3 PDF\u202c x y z"; ++/* { dg-warning "U\\+202E" "" { target *-*-* } .-1 } */ ++ const char *s18 = "a b c LRI\u2066 1 2 3 PDI\u2069 x y z"; ++/* { dg-warning "U\\+2066" "" { target *-*-* } .-1 } */ ++ const char *s19 = "a b c RLI\u2067 1 2 3 PDI\u2069 x y z"; ++/* { dg-warning "U\\+2067" "" { target *-*-* } .-1 } */ ++ const char *s20 = "a b c FSI\u2068 1 2 3 PDI\u2069 x y z"; ++/* { dg-warning "U\\+2068" "" { target *-*-* } .-1 } */ ++} ++ ++void ++g2 () ++{ ++ const char c1 = '\u202a'; ++/* { dg-warning "U\\+202A" "" { target *-*-* } .-1 } */ ++ const char c2 = '\u202A'; ++/* { dg-warning "U\\+202A" "" { target *-*-* } .-1 } */ ++ const char c3 = '\u202b'; ++/* { dg-warning "U\\+202B" "" { target *-*-* } .-1 } */ ++ const char c4 = '\u202B'; ++/* { dg-warning "U\\+202B" "" { target *-*-* } .-1 } */ ++ const char c5 = '\u202d'; ++/* { dg-warning "U\\+202D" "" { target *-*-* } .-1 } */ ++ const char c6 = '\u202D'; ++/* { dg-warning "U\\+202D" "" { target *-*-* } .-1 } */ ++ const char c7 = '\u202e'; ++/* { dg-warning "U\\+202E" "" { target *-*-* } .-1 } */ ++ const char c8 = '\u202E'; ++/* { dg-warning "U\\+202E" "" { target *-*-* } .-1 } */ ++ const char c9 = '\u2066'; ++/* { dg-warning "U\\+2066" "" { target *-*-* } .-1 } */ ++ const char c10 = '\u2067'; ++/* { dg-warning "U\\+2067" "" { target *-*-* } .-1 } */ ++ const char c11 = '\u2068'; ++/* { dg-warning "U\\+2068" "" { target *-*-* } .-1 } */ ++} ++ ++int a‪b‬c; ++/* { dg-warning "U\\+202A" "" { target *-*-* } .-1 } */ ++int a‫b‬c; ++/* { dg-warning "U\\+202B" "" { target *-*-* } .-1 } */ ++int a‭b‬c; ++/* { dg-warning "U\\+202D" "" { target *-*-* } .-1 } */ ++int a‮b‬c; ++/* { dg-warning "U\\+202E" "" { target *-*-* } .-1 } */ ++int a⁦b⁩c; ++/* { dg-warning "U\\+2066" "" { target *-*-* } .-1 } */ ++int a⁧b⁩c; ++/* { dg-warning "U\\+2067" "" { target *-*-* } .-1 } */ ++int a⁨b⁩c; ++/* { dg-warning "U\\+2068" "" { target *-*-* } .-1 } */ ++int A‬X; ++/* { dg-warning "U\\+202C" "" { target *-*-* } .-1 } */ ++int A\u202cY; ++/* { dg-warning "U\\+202C" "" { target *-*-* } .-1 } */ ++int A\u202CY2; ++/* { dg-warning "U\\+202C" "" { target *-*-* } .-1 } */ ++ ++int d\u202ae\u202cf; ++/* { dg-warning "U\\+202A" "" { target *-*-* } .-1 } */ ++int d\u202Ae\u202cf2; ++/* { dg-warning "U\\+202A" "" { target *-*-* } .-1 } */ ++int d\u202be\u202cf; ++/* { dg-warning "U\\+202B" "" { target *-*-* } .-1 } */ ++int d\u202Be\u202cf2; ++/* { dg-warning "U\\+202B" "" { target *-*-* } .-1 } */ ++int d\u202de\u202cf; ++/* { dg-warning "U\\+202D" "" { target *-*-* } .-1 } */ ++int d\u202De\u202cf2; ++/* { dg-warning "U\\+202D" "" { target *-*-* } .-1 } */ ++int d\u202ee\u202cf; ++/* { dg-warning "U\\+202E" "" { target *-*-* } .-1 } */ ++int d\u202Ee\u202cf2; ++/* { dg-warning "U\\+202E" "" { target *-*-* } .-1 } */ ++int d\u2066e\u2069f; ++/* { dg-warning "U\\+2066" "" { target *-*-* } .-1 } */ ++int d\u2067e\u2069f; ++/* { dg-warning "U\\+2067" "" { target *-*-* } .-1 } */ ++int d\u2068e\u2069f; ++/* { dg-warning "U\\+2068" "" { target *-*-* } .-1 } */ ++int X\u2069; ++/* { dg-warning "U\\+2069" "" { target *-*-* } .-1 } */ +diff --git a/gcc/testsuite/c-c++-common/Wbidi-chars-5.c b/gcc/testsuite/c-c++-common/Wbidi-chars-5.c +--- a/gcc/testsuite/c-c++-common/Wbidi-chars-5.c 1969-12-31 16:00:00.000000000 -0800 ++++ b/gcc/testsuite/c-c++-common/Wbidi-chars-5.c 2021-12-25 01:36:22.048018559 -0800 +@@ -0,0 +1,188 @@ ++/* PR preprocessor/103026 */ ++/* { dg-do compile } */ ++/* { dg-options "-Wbidi-chars=unpaired -Wno-multichar -Wno-overflow" } */ ++/* Test all bidi chars in various contexts (identifiers, comments, ++ string literals, character constants), both UCN and UTF-8. The bidi ++ chars here are properly terminated, except for the character constants. */ ++ ++/* a b c LRE‪ 1 2 3 PDF‬ x y z */ ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++/* a b c RLE‫ 1 2 3 PDF‬ x y z */ ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++/* a b c LRO‭ 1 2 3 PDF‬ x y z */ ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++/* a b c RLO‮ 1 2 3 PDF‬ x y z */ ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++/* a b c LRI⁦ 1 2 3 PDI⁩ x y z */ ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++/* a b c RLI⁧ 1 2 3 PDI⁩ x y */ ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++/* a b c FSI⁨ 1 2 3 PDI⁩ x y z */ ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++ ++/* Same but C++ comments instead. */ ++// a b c LRE‪ 1 2 3 PDF‬ x y z ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++// a b c RLE‫ 1 2 3 PDF‬ x y z ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++// a b c LRO‭ 1 2 3 PDF‬ x y z ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++// a b c RLO‮ 1 2 3 PDF‬ x y z ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++// a b c LRI⁦ 1 2 3 PDI⁩ x y z ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++// a b c RLI⁧ 1 2 3 PDI⁩ x y ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++// a b c FSI⁨ 1 2 3 PDI⁩ x y z ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++ ++/* Here we're closing an unopened context, warn when =any. */ ++/* a b c PDI⁩ x y z */ ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++/* a b c PDF‬ x y z */ ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++// a b c PDI⁩ x y z ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++// a b c PDF‬ x y z ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++ ++/* Multiline comments. */ ++/* a b c PDI⁩ x y z ++ */ ++/* { dg-bogus "unpaired" "" { target *-*-* } .-2 } */ ++/* a b c PDF‬ x y z ++ */ ++/* { dg-bogus "unpaired" "" { target *-*-* } .-2 } */ ++/* first ++ a b c PDI⁩ x y z ++ */ ++/* { dg-bogus "unpaired" "" { target *-*-* } .-2 } */ ++/* first ++ a b c PDF‬ x y z ++ */ ++/* { dg-bogus "unpaired" "" { target *-*-* } .-2 } */ ++/* first ++ a b c PDI⁩ x y z */ ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++/* first ++ a b c PDF‬ x y z */ ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++ ++void ++g1 () ++{ ++ const char *s1 = "a b c LRE‪ 1 2 3 PDF‬ x y z"; ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++ const char *s2 = "a b c RLE‫ 1 2 3 PDF‬ x y z"; ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++ const char *s3 = "a b c LRO‭ 1 2 3 PDF‬ x y z"; ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++ const char *s4 = "a b c RLO‮ 1 2 3 PDF‬ x y z"; ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++ const char *s5 = "a b c LRI⁦ 1 2 3 PDI⁩ x y z"; ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++ const char *s6 = "a b c RLI⁧ 1 2 3 PDI⁩ x y z"; ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++ const char *s7 = "a b c FSI⁨ 1 2 3 PDI⁩ x y z"; ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++ const char *s8 = "a b c PDI⁩ x y z"; ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++ const char *s9 = "a b c PDF‬ x y z"; ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++ ++ const char *s10 = "a b c LRE\u202a 1 2 3 PDF\u202c x y z"; ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++ const char *s11 = "a b c LRE\u202A 1 2 3 PDF\u202c x y z"; ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++ const char *s12 = "a b c RLE\u202b 1 2 3 PDF\u202c x y z"; ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++ const char *s13 = "a b c RLE\u202B 1 2 3 PDF\u202c x y z"; ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++ const char *s14 = "a b c LRO\u202d 1 2 3 PDF\u202c x y z"; ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++ const char *s15 = "a b c LRO\u202D 1 2 3 PDF\u202c x y z"; ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++ const char *s16 = "a b c RLO\u202e 1 2 3 PDF\u202c x y z"; ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++ const char *s17 = "a b c RLO\u202E 1 2 3 PDF\u202c x y z"; ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++ const char *s18 = "a b c LRI\u2066 1 2 3 PDI\u2069 x y z"; ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++ const char *s19 = "a b c RLI\u2067 1 2 3 PDI\u2069 x y z"; ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++ const char *s20 = "a b c FSI\u2068 1 2 3 PDI\u2069 x y z"; ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++} ++ ++void ++g2 () ++{ ++ const char c1 = '\u202a'; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++ const char c2 = '\u202A'; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++ const char c3 = '\u202b'; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++ const char c4 = '\u202B'; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++ const char c5 = '\u202d'; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++ const char c6 = '\u202D'; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++ const char c7 = '\u202e'; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++ const char c8 = '\u202E'; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++ const char c9 = '\u2066'; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++ const char c10 = '\u2067'; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++ const char c11 = '\u2068'; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++} ++ ++int a‪b‬c; ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++int a‫b‬c; ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++int a‭b‬c; ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++int a‮b‬c; ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++int a⁦b⁩c; ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++int a⁧b⁩c; ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++int a⁨b⁩c; ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++int A‬X; ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++int A\u202cY; ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++int A\u202CY2; ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++ ++int d\u202ae\u202cf; ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++int d\u202Ae\u202cf2; ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++int d\u202be\u202cf; ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++int d\u202Be\u202cf2; ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++int d\u202de\u202cf; ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++int d\u202De\u202cf2; ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++int d\u202ee\u202cf; ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++int d\u202Ee\u202cf2; ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++int d\u2066e\u2069f; ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++int d\u2067e\u2069f; ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++int d\u2068e\u2069f; ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ ++int X\u2069; ++/* { dg-bogus "unpaired" "" { target *-*-* } .-1 } */ +diff --git a/gcc/testsuite/c-c++-common/Wbidi-chars-6.c b/gcc/testsuite/c-c++-common/Wbidi-chars-6.c +--- a/gcc/testsuite/c-c++-common/Wbidi-chars-6.c 1969-12-31 16:00:00.000000000 -0800 ++++ b/gcc/testsuite/c-c++-common/Wbidi-chars-6.c 2021-12-25 01:36:22.052018489 -0800 +@@ -0,0 +1,155 @@ ++/* PR preprocessor/103026 */ ++/* { dg-do compile } */ ++/* { dg-options "-Wbidi-chars=unpaired" } */ ++/* Test nesting of bidi chars in various contexts. */ ++ ++/* Terminated by the wrong char: */ ++/* a b c LRE‪ 1 2 3 PDI⁩ x y z */ ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++/* a b c RLE‫ 1 2 3 PDI⁩ x y z*/ ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++/* a b c LRO‭ 1 2 3 PDI⁩ x y z */ ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++/* a b c RLO‮ 1 2 3 PDI⁩ x y z */ ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++/* a b c LRI⁦ 1 2 3 PDF‬ x y z */ ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++/* a b c RLI⁧ 1 2 3 PDF‬ x y z */ ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++/* a b c FSI⁨ 1 2 3 PDF‬ x y z*/ ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++ ++/* LRE‪ PDF‬ */ ++/* LRE‪ LRE‪ PDF‬ PDF‬ */ ++/* PDF‬ LRE‪ PDF‬ */ ++/* LRE‪ PDF‬ LRE‪ PDF‬ */ ++/* LRE‪ LRE‪ PDF‬ */ ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++/* PDF‬ LRE‪ */ ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++ ++// a b c LRE‪ 1 2 3 PDI⁩ x y z ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++// a b c RLE‫ 1 2 3 PDI⁩ x y z*/ ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++// a b c LRO‭ 1 2 3 PDI⁩ x y z ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++// a b c RLO‮ 1 2 3 PDI⁩ x y z ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++// a b c LRI⁦ 1 2 3 PDF‬ x y z ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++// a b c RLI⁧ 1 2 3 PDF‬ x y z ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++// a b c FSI⁨ 1 2 3 PDF‬ x y z ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++ ++// LRE‪ PDF‬ ++// LRE‪ LRE‪ PDF‬ PDF‬ ++// PDF‬ LRE‪ PDF‬ ++// LRE‪ PDF‬ LRE‪ PDF‬ ++// LRE‪ LRE‪ PDF‬ ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++// PDF‬ LRE‪ ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++ ++void ++g1 () ++{ ++ const char *s1 = "a b c LRE‪ 1 2 3 PDI⁩ x y z"; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++ const char *s2 = "a b c LRE\u202a 1 2 3 PDI\u2069 x y z"; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++ const char *s3 = "a b c RLE‫ 1 2 3 PDI⁩ x y "; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++ const char *s4 = "a b c RLE\u202b 1 2 3 PDI\u2069 x y z"; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++ const char *s5 = "a b c LRO‭ 1 2 3 PDI⁩ x y z"; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++ const char *s6 = "a b c LRO\u202d 1 2 3 PDI\u2069 x y z"; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++ const char *s7 = "a b c RLO‮ 1 2 3 PDI⁩ x y z"; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++ const char *s8 = "a b c RLO\u202e 1 2 3 PDI\u2069 x y z"; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++ const char *s9 = "a b c LRI⁦ 1 2 3 PDF‬ x y z"; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++ const char *s10 = "a b c LRI\u2066 1 2 3 PDF\u202c x y z"; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++ const char *s11 = "a b c RLI⁧ 1 2 3 PDF‬ x y z\ ++ "; ++/* { dg-warning "unpaired" "" { target *-*-* } .-2 } */ ++ const char *s12 = "a b c RLI\u2067 1 2 3 PDF\u202c x y z"; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++ const char *s13 = "a b c FSI⁨ 1 2 3 PDF‬ x y z"; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++ const char *s14 = "a b c FSI\u2068 1 2 3 PDF\u202c x y z"; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++ const char *s15 = "PDF‬ LRE‪"; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++ const char *s16 = "PDF\u202c LRE\u202a"; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++ const char *s17 = "LRE‪ PDF‬"; ++ const char *s18 = "LRE\u202a PDF\u202c"; ++ const char *s19 = "LRE‪ LRE‪ PDF‬ PDF‬"; ++ const char *s20 = "LRE\u202a LRE\u202a PDF\u202c PDF\u202c"; ++ const char *s21 = "PDF‬ LRE‪ PDF‬"; ++ const char *s22 = "PDF\u202c LRE\u202a PDF\u202c"; ++ const char *s23 = "LRE‪ LRE‪ PDF‬"; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++ const char *s24 = "LRE\u202a LRE\u202a PDF\u202c"; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++ const char *s25 = "PDF‬ LRE‪"; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++ const char *s26 = "PDF\u202c LRE\u202a"; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++ const char *s27 = "PDF‬ LRE\u202a"; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++ const char *s28 = "PDF\u202c LRE‪"; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++} ++ ++int aLRE‪bPDI⁩; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++int A\u202aB\u2069C; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++int aRLE‫bPDI⁩; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++int a\u202bB\u2069c; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++int aLRO‭bPDI⁩; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++int a\u202db\u2069c2; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++int aRLO‮bPDI⁩; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++int a\u202eb\u2069; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++int aLRI⁦bPDF‬; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++int a\u2066b\u202c; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++int aRLI⁧bPDF‬c ++; ++/* { dg-warning "unpaired" "" { target *-*-* } .-2 } */ ++int a\u2067b\u202c; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++int aFSI⁨bPDF‬; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++int a\u2068b\u202c; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++int aFSI⁨bPD\u202C; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++int aFSI\u2068bPDF‬_; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++int aLRE‪bPDF‬b; ++int A\u202aB\u202c; ++int a_LRE‪_LRE‪_b_PDF‬_PDF‬; ++int A\u202aA\u202aB\u202cB\u202c; ++int aPDF‬bLREadPDF‬; ++int a_\u202C_\u202a_\u202c; ++int a_LRE‪_b_PDF‬_c_LRE‪_PDF‬; ++int a_\u202a_\u202c_\u202a_\u202c_; ++int a_LRE‪_b_PDF‬_c_LRE‪; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++int a_\u202a_\u202c_\u202a_; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ +diff --git a/gcc/testsuite/c-c++-common/Wbidi-chars-7.c b/gcc/testsuite/c-c++-common/Wbidi-chars-7.c +--- a/gcc/testsuite/c-c++-common/Wbidi-chars-7.c 1969-12-31 16:00:00.000000000 -0800 ++++ b/gcc/testsuite/c-c++-common/Wbidi-chars-7.c 2021-12-25 01:36:22.052018489 -0800 +@@ -0,0 +1,9 @@ ++/* PR preprocessor/103026 */ ++/* { dg-do compile } */ ++/* { dg-options "-Wbidi-chars=any" } */ ++/* Test we ignore UCNs in comments. */ ++ ++// a b c \u202a 1 2 3 ++// a b c \u202A 1 2 3 ++/* a b c \u202a 1 2 3 */ ++/* a b c \u202A 1 2 3 */ +diff --git a/gcc/testsuite/c-c++-common/Wbidi-chars-8.c b/gcc/testsuite/c-c++-common/Wbidi-chars-8.c +--- a/gcc/testsuite/c-c++-common/Wbidi-chars-8.c 1969-12-31 16:00:00.000000000 -0800 ++++ b/gcc/testsuite/c-c++-common/Wbidi-chars-8.c 2021-12-25 01:36:22.052018489 -0800 +@@ -0,0 +1,13 @@ ++/* PR preprocessor/103026 */ ++/* { dg-do compile } */ ++/* { dg-options "-Wbidi-chars=any" } */ ++/* Test \u vs \U. */ ++ ++int a_\u202A; ++/* { dg-warning "U\\+202A" "" { target *-*-* } .-1 } */ ++int a_\u202a_2; ++/* { dg-warning "U\\+202A" "" { target *-*-* } .-1 } */ ++int a_\U0000202A_3; ++/* { dg-warning "U\\+202A" "" { target *-*-* } .-1 } */ ++int a_\U0000202a_4; ++/* { dg-warning "U\\+202A" "" { target *-*-* } .-1 } */ +diff --git a/gcc/testsuite/c-c++-common/Wbidi-chars-9.c b/gcc/testsuite/c-c++-common/Wbidi-chars-9.c +--- a/gcc/testsuite/c-c++-common/Wbidi-chars-9.c 1969-12-31 16:00:00.000000000 -0800 ++++ b/gcc/testsuite/c-c++-common/Wbidi-chars-9.c 2021-12-25 01:36:22.052018489 -0800 +@@ -0,0 +1,29 @@ ++/* PR preprocessor/103026 */ ++/* { dg-do compile } */ ++/* { dg-options "-Wbidi-chars=unpaired" } */ ++/* Test that we properly separate bidi contexts (comment/identifier/character ++ constant/string literal). */ ++ ++/* LRE ->‪<- */ int pdf_\u202c_1; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++/* RLE ->‫<- */ int pdf_\u202c_2; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++/* LRO ->‭<- */ int pdf_\u202c_3; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++/* RLO ->‮<- */ int pdf_\u202c_4; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++/* LRI ->⁦<-*/ int pdi_\u2069_1; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++/* RLI ->⁧<- */ int pdi_\u2069_12; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++/* FSI ->⁨<- */ int pdi_\u2069_3; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++ ++const char *s1 = "LRE\u202a"; /* PDF ->‬<- */ ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++/* LRE ->‪<- */ const char *s2 = "PDF\u202c"; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++const char *s3 = "LRE\u202a"; int pdf_\u202c_5; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ ++int lre_\u202a; const char *s4 = "PDF\u202c"; ++/* { dg-warning "unpaired" "" { target *-*-* } .-1 } */ +diff --git a/libcpp/include/cpplib.h b/libcpp/include/cpplib.h +--- a/libcpp/include/cpplib.h 2021-12-25 01:35:33.288883417 -0800 ++++ b/libcpp/include/cpplib.h 2021-12-25 01:36:22.052018489 -0800 +@@ -308,6 +308,17 @@ enum cpp_normalize_level { + normalized_none + }; + ++/* The possible bidirectional control characters checking levels, from least ++ restrictive to most. */ ++enum cpp_bidirectional_level { ++ /* No checking. */ ++ bidirectional_none, ++ /* Only detect unpaired uses of bidirectional control characters. */ ++ bidirectional_unpaired, ++ /* Detect any use of bidirectional control characters. */ ++ bidirectional_any ++}; ++ + /* This structure is nested inside struct cpp_reader, and + carries all the options visible to the command line. */ + struct cpp_options +@@ -515,6 +526,10 @@ struct cpp_options + /* True if warn about differences between C++98 and C++11. */ + bool cpp_warn_cxx11_compat; + ++ /* Nonzero if bidirectional control characters checking is on. See enum ++ cpp_bidirectional_level. */ ++ unsigned char cpp_warn_bidirectional; ++ + /* Dependency generation. */ + struct + { +@@ -613,7 +628,8 @@ enum cpp_warning_reason { + CPP_W_C90_C99_COMPAT, + CPP_W_C11_C2X_COMPAT, + CPP_W_CXX11_COMPAT, +- CPP_W_EXPANSION_TO_DEFINED ++ CPP_W_EXPANSION_TO_DEFINED, ++ CPP_W_BIDIRECTIONAL + }; + + /* Callback for header lookup for HEADER, which is the name of a +diff --git a/libcpp/init.c b/libcpp/init.c +--- a/libcpp/init.c 2021-12-25 01:29:12.931317107 -0800 ++++ b/libcpp/init.c 2021-12-25 01:36:22.052018489 -0800 +@@ -215,6 +215,7 @@ cpp_create_reader (enum c_lang lang, cpp + = ENABLE_CANONICAL_SYSTEM_HEADERS; + CPP_OPTION (pfile, ext_numeric_literals) = 1; + CPP_OPTION (pfile, warn_date_time) = 0; ++ CPP_OPTION (pfile, cpp_warn_bidirectional) = bidirectional_unpaired; + + /* Default CPP arithmetic to something sensible for the host for the + benefit of dumb users like fix-header. */ +diff --git a/libcpp/internal.h b/libcpp/internal.h +--- a/libcpp/internal.h 2021-12-25 01:35:33.288883417 -0800 ++++ b/libcpp/internal.h 2021-12-25 01:36:22.052018489 -0800 +@@ -581,6 +581,10 @@ struct cpp_reader + /* If non-zero, the lexer will use this location for the next token + instead of getting a location from the linemap. */ + location_t forced_token_location; ++ bool warn_bidi_p () const ++ { ++ return CPP_OPTION (this, cpp_warn_bidirectional) != bidirectional_none; ++ } + }; + + /* Character classes. Based on the more primitive macros in safe-ctype.h. +diff --git a/libcpp/lex.c b/libcpp/lex.c +--- a/libcpp/lex.c 2021-12-25 01:35:33.288883417 -0800 ++++ b/libcpp/lex.c 2021-12-25 01:36:22.052018489 -0800 +@@ -1164,6 +1164,324 @@ _cpp_process_line_notes (cpp_reader *pfi + } + } + ++namespace bidi { ++ enum class kind { ++ NONE, LRE, RLE, LRO, RLO, LRI, RLI, FSI, PDF, PDI, LTR, RTL ++ }; ++ ++ /* All the UTF-8 encodings of bidi characters start with E2. */ ++ constexpr uchar utf8_start = 0xe2; ++ ++ /* A vector holding currently open bidi contexts. We use a char for ++ each context, its LSB is 1 if it represents a PDF context, 0 if it ++ represents a PDI context. The next bit is 1 if this context was open ++ by a bidi character written as a UCN, and 0 when it was UTF-8. */ ++ semi_embedded_vec vec; ++ ++ /* Close the whole comment/identifier/string literal/character constant ++ context. */ ++ void on_close () ++ { ++ vec.truncate (0); ++ } ++ ++ /* Pop the last element in the vector. */ ++ void pop () ++ { ++ unsigned int len = vec.count (); ++ gcc_checking_assert (len > 0); ++ vec.truncate (len - 1); ++ } ++ ++ /* Return the context of the Ith element. */ ++ kind ctx_at (unsigned int i) ++ { ++ return (vec[i] & 1) ? kind::PDF : kind::PDI; ++ } ++ ++ /* Return which context is currently opened. */ ++ kind current_ctx () ++ { ++ unsigned int len = vec.count (); ++ if (len == 0) ++ return kind::NONE; ++ return ctx_at (len - 1); ++ } ++ ++ /* Return true if the current context comes from a UCN origin, that is, ++ the bidi char which started this bidi context was written as a UCN. */ ++ bool current_ctx_ucn_p () ++ { ++ unsigned int len = vec.count (); ++ gcc_checking_assert (len > 0); ++ return (vec[len - 1] >> 1) & 1; ++ } ++ ++ /* We've read a bidi char, update the current vector as necessary. */ ++ void on_char (kind k, bool ucn_p) ++ { ++ switch (k) ++ { ++ case kind::LRE: ++ case kind::RLE: ++ case kind::LRO: ++ case kind::RLO: ++ vec.push (ucn_p ? 3u : 1u); ++ break; ++ case kind::LRI: ++ case kind::RLI: ++ case kind::FSI: ++ vec.push (ucn_p ? 2u : 0u); ++ break; ++ /* PDF terminates the scope of the last LRE, RLE, LRO, or RLO ++ whose scope has not yet been terminated. */ ++ case kind::PDF: ++ if (current_ctx () == kind::PDF) ++ pop (); ++ break; ++ /* PDI terminates the scope of the last LRI, RLI, or FSI whose ++ scope has not yet been terminated, as well as the scopes of ++ any subsequent LREs, RLEs, LROs, or RLOs whose scopes have not ++ yet been terminated. */ ++ case kind::PDI: ++ for (int i = vec.count () - 1; i >= 0; --i) ++ if (ctx_at (i) == kind::PDI) ++ { ++ vec.truncate (i); ++ break; ++ } ++ break; ++ case kind::LTR: ++ case kind::RTL: ++ /* These aren't popped by a PDF/PDI. */ ++ break; ++ [[likely]] case kind::NONE: ++ break; ++ default: ++ abort (); ++ } ++ } ++ ++ /* Return a descriptive string for K. */ ++ const char *to_str (kind k) ++ { ++ switch (k) ++ { ++ case kind::LRE: ++ return "U+202A (LEFT-TO-RIGHT EMBEDDING)"; ++ case kind::RLE: ++ return "U+202B (RIGHT-TO-LEFT EMBEDDING)"; ++ case kind::LRO: ++ return "U+202D (LEFT-TO-RIGHT OVERRIDE)"; ++ case kind::RLO: ++ return "U+202E (RIGHT-TO-LEFT OVERRIDE)"; ++ case kind::LRI: ++ return "U+2066 (LEFT-TO-RIGHT ISOLATE)"; ++ case kind::RLI: ++ return "U+2067 (RIGHT-TO-LEFT ISOLATE)"; ++ case kind::FSI: ++ return "U+2068 (FIRST STRONG ISOLATE)"; ++ case kind::PDF: ++ return "U+202C (POP DIRECTIONAL FORMATTING)"; ++ case kind::PDI: ++ return "U+2069 (POP DIRECTIONAL ISOLATE)"; ++ case kind::LTR: ++ return "U+200E (LEFT-TO-RIGHT MARK)"; ++ case kind::RTL: ++ return "U+200F (RIGHT-TO-LEFT MARK)"; ++ default: ++ abort (); ++ } ++ } ++} ++ ++/* Parse a sequence of 3 bytes starting with P and return its bidi code. */ ++ ++static bidi::kind ++get_bidi_utf8 (const unsigned char *const p) ++{ ++ gcc_checking_assert (p[0] == bidi::utf8_start); ++ ++ if (p[1] == 0x80) ++ switch (p[2]) ++ { ++ case 0xaa: ++ return bidi::kind::LRE; ++ case 0xab: ++ return bidi::kind::RLE; ++ case 0xac: ++ return bidi::kind::PDF; ++ case 0xad: ++ return bidi::kind::LRO; ++ case 0xae: ++ return bidi::kind::RLO; ++ case 0x8e: ++ return bidi::kind::LTR; ++ case 0x8f: ++ return bidi::kind::RTL; ++ default: ++ break; ++ } ++ else if (p[1] == 0x81) ++ switch (p[2]) ++ { ++ case 0xa6: ++ return bidi::kind::LRI; ++ case 0xa7: ++ return bidi::kind::RLI; ++ case 0xa8: ++ return bidi::kind::FSI; ++ case 0xa9: ++ return bidi::kind::PDI; ++ default: ++ break; ++ } ++ ++ return bidi::kind::NONE; ++} ++ ++/* Parse a UCN where P points just past \u or \U and return its bidi code. */ ++ ++static bidi::kind ++get_bidi_ucn (const unsigned char *p, bool is_U) ++{ ++ /* 6.4.3 Universal Character Names ++ \u hex-quad ++ \U hex-quad hex-quad ++ where \unnnn means \U0000nnnn. */ ++ ++ if (is_U) ++ { ++ if (p[0] != '0' || p[1] != '0' || p[2] != '0' || p[3] != '0') ++ return bidi::kind::NONE; ++ /* Skip 4B so we can treat \u and \U the same below. */ ++ p += 4; ++ } ++ ++ /* All code points we are looking for start with 20xx. */ ++ if (p[0] != '2' || p[1] != '0') ++ return bidi::kind::NONE; ++ else if (p[2] == '2') ++ switch (p[3]) ++ { ++ case 'a': ++ case 'A': ++ return bidi::kind::LRE; ++ case 'b': ++ case 'B': ++ return bidi::kind::RLE; ++ case 'c': ++ case 'C': ++ return bidi::kind::PDF; ++ case 'd': ++ case 'D': ++ return bidi::kind::LRO; ++ case 'e': ++ case 'E': ++ return bidi::kind::RLO; ++ default: ++ break; ++ } ++ else if (p[2] == '6') ++ switch (p[3]) ++ { ++ case '6': ++ return bidi::kind::LRI; ++ case '7': ++ return bidi::kind::RLI; ++ case '8': ++ return bidi::kind::FSI; ++ case '9': ++ return bidi::kind::PDI; ++ default: ++ break; ++ } ++ else if (p[2] == '0') ++ switch (p[3]) ++ { ++ case 'e': ++ case 'E': ++ return bidi::kind::LTR; ++ case 'f': ++ case 'F': ++ return bidi::kind::RTL; ++ default: ++ break; ++ } ++ ++ return bidi::kind::NONE; ++} ++ ++/* We're closing a bidi context, that is, we've encountered a newline, ++ are closing a C-style comment, or are at the end of a string literal, ++ character constant, or identifier. Warn if this context was not ++ properly terminated by a PDI or PDF. P points to the last character ++ in this context. */ ++ ++static void ++maybe_warn_bidi_on_close (cpp_reader *pfile, const uchar *p) ++{ ++ if (CPP_OPTION (pfile, cpp_warn_bidirectional) == bidirectional_unpaired ++ && bidi::vec.count () > 0) ++ { ++ const location_t loc ++ = linemap_position_for_column (pfile->line_table, ++ CPP_BUF_COLUMN (pfile->buffer, p)); ++ cpp_warning_with_line (pfile, CPP_W_BIDIRECTIONAL, loc, 0, ++ "unpaired UTF-8 bidirectional control character " ++ "detected"); ++ } ++ /* We're done with this context. */ ++ bidi::on_close (); ++} ++ ++/* We're at the beginning or in the middle of an identifier/comment/string ++ literal/character constant. Warn if we've encountered a bidi character. ++ KIND says which bidi character it was; P points to it in the character ++ stream. UCN_P is true iff this bidi character was written as a UCN. */ ++ ++static void ++maybe_warn_bidi_on_char (cpp_reader *pfile, const uchar *p, bidi::kind kind, ++ bool ucn_p) ++{ ++ if (__builtin_expect (kind == bidi::kind::NONE, 1)) ++ return; ++ ++ const auto warn_bidi = CPP_OPTION (pfile, cpp_warn_bidirectional); ++ ++ if (warn_bidi != bidirectional_none) ++ { ++ const location_t loc ++ = linemap_position_for_column (pfile->line_table, ++ CPP_BUF_COLUMN (pfile->buffer, p)); ++ /* It seems excessive to warn about a PDI/PDF that is closing ++ an opened context because we've already warned about the ++ opening character. Except warn when we have a UCN x UTF-8 ++ mismatch. */ ++ if (kind == bidi::current_ctx ()) ++ { ++ if (warn_bidi == bidirectional_unpaired ++ && bidi::current_ctx_ucn_p () != ucn_p) ++ cpp_warning_with_line (pfile, CPP_W_BIDIRECTIONAL, loc, 0, ++ "UTF-8 vs UCN mismatch when closing " ++ "a context by \"%s\"", bidi::to_str (kind)); ++ } ++ else if (warn_bidi == bidirectional_any) ++ { ++ if (kind == bidi::kind::PDF || kind == bidi::kind::PDI) ++ cpp_warning_with_line (pfile, CPP_W_BIDIRECTIONAL, loc, 0, ++ "\"%s\" is closing an unopened context", ++ bidi::to_str (kind)); ++ else ++ cpp_warning_with_line (pfile, CPP_W_BIDIRECTIONAL, loc, 0, ++ "found problematic Unicode character \"%s\"", ++ bidi::to_str (kind)); ++ } ++ } ++ /* We're done with this context. */ ++ bidi::on_char (kind, ucn_p); ++} ++ + /* Skip a C-style block comment. We find the end of the comment by + seeing if an asterisk is before every '/' we encounter. Returns + nonzero if comment terminated by EOF, zero otherwise. +@@ -1175,6 +1493,7 @@ _cpp_skip_block_comment (cpp_reader *pfi + cpp_buffer *buffer = pfile->buffer; + const uchar *cur = buffer->cur; + uchar c; ++ const bool warn_bidi_p = pfile->warn_bidi_p (); + + cur++; + if (*cur == '/') +@@ -1189,7 +1508,11 @@ _cpp_skip_block_comment (cpp_reader *pfi + if (c == '/') + { + if (cur[-2] == '*') +- break; ++ { ++ if (warn_bidi_p) ++ maybe_warn_bidi_on_close (pfile, cur); ++ break; ++ } + + /* Warn about potential nested comments, but not if the '/' + comes immediately before the true comment delimiter. +@@ -1208,6 +1531,8 @@ _cpp_skip_block_comment (cpp_reader *pfi + { + unsigned int cols; + buffer->cur = cur - 1; ++ if (warn_bidi_p) ++ maybe_warn_bidi_on_close (pfile, cur); + _cpp_process_line_notes (pfile, true); + if (buffer->next_line >= buffer->rlimit) + return true; +@@ -1218,6 +1543,13 @@ _cpp_skip_block_comment (cpp_reader *pfi + + cur = buffer->cur; + } ++ /* If this is a beginning of a UTF-8 encoding, it might be ++ a bidirectional control character. */ ++ else if (__builtin_expect (c == bidi::utf8_start, 0) && warn_bidi_p) ++ { ++ bidi::kind kind = get_bidi_utf8 (cur - 1); ++ maybe_warn_bidi_on_char (pfile, cur, kind, /*ucn_p=*/false); ++ } + } + + buffer->cur = cur; +@@ -1233,9 +1565,31 @@ skip_line_comment (cpp_reader *pfile) + { + cpp_buffer *buffer = pfile->buffer; + location_t orig_line = pfile->line_table->highest_line; ++ const bool warn_bidi_p = pfile->warn_bidi_p (); + +- while (*buffer->cur != '\n') +- buffer->cur++; ++ if (!warn_bidi_p) ++ while (*buffer->cur != '\n') ++ buffer->cur++; ++ else ++ { ++ while (*buffer->cur != '\n' ++ && *buffer->cur != bidi::utf8_start) ++ buffer->cur++; ++ if (__builtin_expect (*buffer->cur == bidi::utf8_start, 0)) ++ { ++ while (*buffer->cur != '\n') ++ { ++ if (__builtin_expect (*buffer->cur == bidi::utf8_start, 0)) ++ { ++ bidi::kind kind = get_bidi_utf8 (buffer->cur); ++ maybe_warn_bidi_on_char (pfile, buffer->cur, kind, ++ /*ucn_p=*/false); ++ } ++ buffer->cur++; ++ } ++ maybe_warn_bidi_on_close (pfile, buffer->cur); ++ } ++ } + + _cpp_process_line_notes (pfile, true); + return orig_line != pfile->line_table->highest_line; +@@ -1343,11 +1697,13 @@ static const cppchar_t utf8_signifier = + + /* Returns TRUE if the sequence starting at buffer->cur is valid in + an identifier. FIRST is TRUE if this starts an identifier. */ ++ + static bool + forms_identifier_p (cpp_reader *pfile, int first, + struct normalize_state *state) + { + cpp_buffer *buffer = pfile->buffer; ++ const bool warn_bidi_p = pfile->warn_bidi_p (); + + if (*buffer->cur == '$') + { +@@ -1370,6 +1726,13 @@ forms_identifier_p (cpp_reader *pfile, i + cppchar_t s; + if (*buffer->cur >= utf8_signifier) + { ++ if (__builtin_expect (*buffer->cur == bidi::utf8_start, 0) ++ && warn_bidi_p) ++ { ++ bidi::kind kind = get_bidi_utf8 (buffer->cur); ++ maybe_warn_bidi_on_char (pfile, buffer->cur, kind, ++ /*ucn_p=*/false); ++ } + if (_cpp_valid_utf8 (pfile, &buffer->cur, buffer->rlimit, 1 + !first, + state, &s)) + return true; +@@ -1378,6 +1741,13 @@ forms_identifier_p (cpp_reader *pfile, i + && (buffer->cur[1] == 'u' || buffer->cur[1] == 'U')) + { + buffer->cur += 2; ++ if (warn_bidi_p) ++ { ++ bidi::kind kind = get_bidi_ucn (buffer->cur, ++ buffer->cur[-1] == 'U'); ++ maybe_warn_bidi_on_char (pfile, buffer->cur, kind, ++ /*ucn_p=*/true); ++ } + if (_cpp_valid_ucn (pfile, &buffer->cur, buffer->rlimit, 1 + !first, + state, &s, NULL, NULL)) + return true; +@@ -1486,6 +1856,7 @@ lex_identifier (cpp_reader *pfile, const + const uchar *cur; + unsigned int len; + unsigned int hash = HT_HASHSTEP (0, *base); ++ const bool warn_bidi_p = pfile->warn_bidi_p (); + + cur = pfile->buffer->cur; + if (! starts_ucn) +@@ -1509,6 +1880,8 @@ lex_identifier (cpp_reader *pfile, const + pfile->buffer->cur++; + } + } while (forms_identifier_p (pfile, false, nst)); ++ if (warn_bidi_p) ++ maybe_warn_bidi_on_close (pfile, pfile->buffer->cur); + result = _cpp_interpret_identifier (pfile, base, + pfile->buffer->cur - base); + *spelling = cpp_lookup (pfile, base, pfile->buffer->cur - base); +@@ -1697,6 +2070,7 @@ lex_raw_string (cpp_reader *pfile, cpp_t + { + uchar raw_prefix[17]; + uchar temp_buffer[18]; ++ const bool warn_bidi_p = pfile->warn_bidi_p (); + const uchar *orig_base; + unsigned int raw_prefix_len = 0, raw_suffix_len = 0; + enum raw_str_phase { RAW_STR_PREFIX, RAW_STR, RAW_STR_SUFFIX }; +@@ -1946,8 +2320,15 @@ lex_raw_string (cpp_reader *pfile, cpp_t + cur = base = pfile->buffer->cur; + note = &pfile->buffer->notes[pfile->buffer->cur_note]; + } ++ else if (__builtin_expect ((unsigned char) c == bidi::utf8_start, 0) ++ && warn_bidi_p) ++ maybe_warn_bidi_on_char (pfile, pos - 1, get_bidi_utf8 (pos - 1), ++ /*ucn_p=*/false); + } + ++ if (warn_bidi_p) ++ maybe_warn_bidi_on_close (pfile, pos); ++ + if (CPP_OPTION (pfile, user_literals)) + { + /* If a string format macro, say from inttypes.h, is placed touching +@@ -2042,15 +2423,27 @@ lex_string (cpp_reader *pfile, cpp_token + else + terminator = '>', type = CPP_HEADER_NAME; + ++ const bool warn_bidi_p = pfile->warn_bidi_p (); + for (;;) + { + cppchar_t c = *cur++; + + /* In #include-style directives, terminators are not escapable. */ + if (c == '\\' && !pfile->state.angled_headers && *cur != '\n') +- cur++; ++ { ++ if ((cur[0] == 'u' || cur[0] == 'U') && warn_bidi_p) ++ { ++ bidi::kind kind = get_bidi_ucn (cur + 1, cur[0] == 'U'); ++ maybe_warn_bidi_on_char (pfile, cur, kind, /*ucn_p=*/true); ++ } ++ cur++; ++ } + else if (c == terminator) +- break; ++ { ++ if (warn_bidi_p) ++ maybe_warn_bidi_on_close (pfile, cur - 1); ++ break; ++ } + else if (c == '\n') + { + cur--; +@@ -2067,6 +2460,11 @@ lex_string (cpp_reader *pfile, cpp_token + } + else if (c == '\0') + saw_NUL = true; ++ else if (__builtin_expect (c == bidi::utf8_start, 0) && warn_bidi_p) ++ { ++ bidi::kind kind = get_bidi_utf8 (cur - 1); ++ maybe_warn_bidi_on_char (pfile, cur - 1, kind, /*ucn_p=*/false); ++ } + } + + if (saw_NUL && !pfile->state.skipping) diff --git a/meta/recipes-devtools/gcc/gcc/0004-CVE-2021-42574.patch b/meta/recipes-devtools/gcc/gcc/0004-CVE-2021-42574.patch new file mode 100644 index 0000000000..877b8a6452 --- /dev/null +++ b/meta/recipes-devtools/gcc/gcc/0004-CVE-2021-42574.patch @@ -0,0 +1,138 @@ +From 1a7f2c0774129750fdf73e9f1b78f0ce983c9ab3 Mon Sep 17 00:00:00 2001 +From: David Malcolm +Date: Tue, 2 Nov 2021 09:54:32 -0400 +Subject: [PATCH] libcpp: escape non-ASCII source bytes in -Wbidi-chars= + [PR103026] +MIME-Version: 1.0 +Content-Type: text/plain; charset=utf8 +Content-Transfer-Encoding: 8bit + +This flags rich_locations associated with -Wbidi-chars= so that +non-ASCII bytes will be escaped when printing the source lines +(using the diagnostics support I added in +r12-4825-gbd5e882cf6e0def3dd1bc106075d59a303fe0d1e). + +In particular, this ensures that the printed source lines will +be pure ASCII, and thus the visual ordering of the characters +will be the same as the logical ordering. + +Before: + + Wbidi-chars-1.c: In function âmainâ: + Wbidi-chars-1.c:6:43: warning: unpaired UTF-8 bidirectional control character detected [-Wbidi-chars=] + 6 | /*â® } â¦if (isAdmin)⩠⦠begin admins only */ + | ^ + Wbidi-chars-1.c:9:28: warning: unpaired UTF-8 bidirectional control character detected [-Wbidi-chars=] + 9 | /* end admins only â® { â¦*/ + | ^ + + Wbidi-chars-11.c:6:15: warning: UTF-8 vs UCN mismatch when closing a context by "U+202C (POP DIRECTIONAL FORMATTING)" [-Wbidi-chars=] + 6 | int LRE_âª_PDF_\u202c; + | ^ + Wbidi-chars-11.c:8:19: warning: UTF-8 vs UCN mismatch when closing a context by "U+202C (POP DIRECTIONAL FORMATTING)" [-Wbidi-chars=] + 8 | int LRE_\u202a_PDF_â¬_; + | ^ + Wbidi-chars-11.c:10:28: warning: UTF-8 vs UCN mismatch when closing a context by "U+202C (POP DIRECTIONAL FORMATTING)" [-Wbidi-chars=] + 10 | const char *s1 = "LRE_âª_PDF_\u202c"; + | ^ + Wbidi-chars-11.c:12:33: warning: UTF-8 vs UCN mismatch when closing a context by "U+202C (POP DIRECTIONAL FORMATTING)" [-Wbidi-chars=] + 12 | const char *s2 = "LRE_\u202a_PDF_â¬"; + | ^ + +After: + + Wbidi-chars-1.c: In function âmainâ: + Wbidi-chars-1.c:6:43: warning: unpaired UTF-8 bidirectional control character detected [-Wbidi-chars=] + 6 | /* } if (isAdmin) begin admins only */ + | ^ + Wbidi-chars-1.c:9:28: warning: unpaired UTF-8 bidirectional control character detected [-Wbidi-chars=] + 9 | /* end admins only { */ + | ^ + + Wbidi-chars-11.c:6:15: warning: UTF-8 vs UCN mismatch when closing a context by "U+202C (POP DIRECTIONAL FORMATTING)" [-Wbidi-chars=] + 6 | int LRE__PDF_\u202c; + | ^ + Wbidi-chars-11.c:8:19: warning: UTF-8 vs UCN mismatch when closing a context by "U+202C (POP DIRECTIONAL FORMATTING)" [-Wbidi-chars=] + 8 | int LRE_\u202a_PDF__; + | ^ + Wbidi-chars-11.c:10:28: warning: UTF-8 vs UCN mismatch when closing a context by "U+202C (POP DIRECTIONAL FORMATTING)" [-Wbidi-chars=] + 10 | const char *s1 = "LRE__PDF_\u202c"; + | ^ + Wbidi-chars-11.c:12:33: warning: UTF-8 vs UCN mismatch when closing a context by "U+202C (POP DIRECTIONAL FORMATTING)" [-Wbidi-chars=] + 12 | const char *s2 = "LRE_\u202a_PDF_"; + | ^ + +libcpp/ChangeLog: + PR preprocessor/103026 + * lex.c (maybe_warn_bidi_on_close): Use a rich_location + and call set_escape_on_output (true) on it. + (maybe_warn_bidi_on_char): Likewise. + +Signed-off-by: David Malcolm + +CVE: CVE-2021-42574 +Upstream-Status: Backport [https://gcc.gnu.org/git/gitweb.cgi?p=gcc.git;h=1a7f2c0774129750fdf73e9f1b78f0ce983c9ab3] +Signed-off-by: Pgowda + +--- + libcpp/lex.c | 29 +++++++++++++++++------------ + 1 file changed, 17 insertions(+), 12 deletions(-) + +diff --git a/libcpp/lex.c b/libcpp/lex.c +--- a/libcpp/lex.c 2021-12-14 20:44:11.647815287 -0800 ++++ b/libcpp/lex.c 2021-12-14 20:43:38.008383220 -0800 +@@ -1427,9 +1427,11 @@ maybe_warn_bidi_on_close (cpp_reader *pf + const location_t loc + = linemap_position_for_column (pfile->line_table, + CPP_BUF_COLUMN (pfile->buffer, p)); +- cpp_warning_with_line (pfile, CPP_W_BIDIRECTIONAL, loc, 0, +- "unpaired UTF-8 bidirectional control character " +- "detected"); ++ rich_location rich_loc (pfile->line_table, loc); ++ rich_loc.set_escape_on_output (true); ++ cpp_warning_at (pfile, CPP_W_BIDIRECTIONAL, &rich_loc, ++ "unpaired UTF-8 bidirectional control character " ++ "detected"); + } + /* We're done with this context. */ + bidi::on_close (); +@@ -1454,6 +1456,9 @@ maybe_warn_bidi_on_char (cpp_reader *pfi + const location_t loc + = linemap_position_for_column (pfile->line_table, + CPP_BUF_COLUMN (pfile->buffer, p)); ++ rich_location rich_loc (pfile->line_table, loc); ++ rich_loc.set_escape_on_output (true); ++ + /* It seems excessive to warn about a PDI/PDF that is closing + an opened context because we've already warned about the + opening character. Except warn when we have a UCN x UTF-8 +@@ -1462,20 +1467,20 @@ maybe_warn_bidi_on_char (cpp_reader *pfi + { + if (warn_bidi == bidirectional_unpaired + && bidi::current_ctx_ucn_p () != ucn_p) +- cpp_warning_with_line (pfile, CPP_W_BIDIRECTIONAL, loc, 0, +- "UTF-8 vs UCN mismatch when closing " +- "a context by \"%s\"", bidi::to_str (kind)); ++ cpp_warning_at (pfile, CPP_W_BIDIRECTIONAL, &rich_loc, ++ "UTF-8 vs UCN mismatch when closing " ++ "a context by \"%s\"", bidi::to_str (kind)); + } + else if (warn_bidi == bidirectional_any) + { + if (kind == bidi::kind::PDF || kind == bidi::kind::PDI) +- cpp_warning_with_line (pfile, CPP_W_BIDIRECTIONAL, loc, 0, +- "\"%s\" is closing an unopened context", +- bidi::to_str (kind)); ++ cpp_warning_at (pfile, CPP_W_BIDIRECTIONAL, &rich_loc, ++ "\"%s\" is closing an unopened context", ++ bidi::to_str (kind)); + else +- cpp_warning_with_line (pfile, CPP_W_BIDIRECTIONAL, loc, 0, +- "found problematic Unicode character \"%s\"", +- bidi::to_str (kind)); ++ cpp_warning_at (pfile, CPP_W_BIDIRECTIONAL, &rich_loc, ++ "found problematic Unicode character \"%s\"", ++ bidi::to_str (kind)); + } + } + /* We're done with this context. */ diff --git a/meta/recipes-devtools/gcc/gcc/0005-CVE-2021-42574.patch b/meta/recipes-devtools/gcc/gcc/0005-CVE-2021-42574.patch new file mode 100644 index 0000000000..6e983a67b6 --- /dev/null +++ b/meta/recipes-devtools/gcc/gcc/0005-CVE-2021-42574.patch @@ -0,0 +1,575 @@ +From bef32d4a28595e933f24fef378cf052a30b674a7 Mon Sep 17 00:00:00 2001 +From: David Malcolm +Date: Tue, 2 Nov 2021 15:45:22 -0400 +Subject: [PATCH] libcpp: capture and underline ranges in -Wbidi-chars= + [PR103026] +MIME-Version: 1.0 +Content-Type: text/plain; charset=utf8 +Content-Transfer-Encoding: 8bit + +This patch converts the bidi::vec to use a struct so that we can +capture location_t values for the bidirectional control characters. + +Before: + + Wbidi-chars-1.c: In function âmainâ: + Wbidi-chars-1.c:6:43: warning: unpaired UTF-8 bidirectional control character detected [-Wbidi-chars=] + 6 | /* } if (isAdmin) begin admins only */ + | ^ + Wbidi-chars-1.c:9:28: warning: unpaired UTF-8 bidirectional control character detected [-Wbidi-chars=] + 9 | /* end admins only { */ + | ^ + +After: + + Wbidi-chars-1.c: In function âmainâ: + Wbidi-chars-1.c:6:43: warning: unpaired UTF-8 bidirectional control characters detected [-Wbidi-chars=] + 6 | /* } if (isAdmin) begin admins only */ + | ~~~~~~~~ ~~~~~~~~ ^ + | | | | + | | | end of bidirectional context + | U+202E (RIGHT-TO-LEFT OVERRIDE) U+2066 (LEFT-TO-RIGHT ISOLATE) + Wbidi-chars-1.c:9:28: warning: unpaired UTF-8 bidirectional control characters detected [-Wbidi-chars=] + 9 | /* end admins only { */ + | ~~~~~~~~ ~~~~~~~~ ^ + | | | | + | | | end of bidirectional context + | | U+2066 (LEFT-TO-RIGHT ISOLATE) + | U+202E (RIGHT-TO-LEFT OVERRIDE) + +Signed-off-by: David Malcolm + +gcc/testsuite/ChangeLog: + PR preprocessor/103026 + * c-c++-common/Wbidi-chars-ranges.c: New test. + +libcpp/ChangeLog: + PR preprocessor/103026 + * lex.c (struct bidi::context): New. + (bidi::vec): Convert to a vec of context rather than unsigned + char. + (bidi::ctx_at): Rename to... + (bidi::pop_kind_at): ...this and reimplement for above change. + (bidi::current_ctx): Update for change to vec. + (bidi::current_ctx_ucn_p): Likewise. + (bidi::current_ctx_loc): New. + (bidi::on_char): Update for usage of context struct. Add "loc" + param and pass it when pushing contexts. + (get_location_for_byte_range_in_cur_line): New. + (get_bidi_utf8): Rename to... + (get_bidi_utf8_1): ...this, reintroducing... + (get_bidi_utf8): ...as a wrapper, setting *OUT when the result is + not NONE. + (get_bidi_ucn): Rename to... + (get_bidi_ucn_1): ...this, reintroducing... + (get_bidi_ucn): ...as a wrapper, setting *OUT when the result is + not NONE. + (class unpaired_bidi_rich_location): New. + (maybe_warn_bidi_on_close): Use unpaired_bidi_rich_location when + reporting on unpaired bidi chars. Split into singular vs plural + spellings. + (maybe_warn_bidi_on_char): Pass in a location_t rather than a + const uchar * and use it when emitting warnings, and when calling + bidi::on_char. + (_cpp_skip_block_comment): Capture location when kind is not NONE + and pass it to maybe_warn_bidi_on_char. + (skip_line_comment): Likewise. + (forms_identifier_p): Likewise. + (lex_raw_string): Likewise. + (lex_string): Likewise. + +Signed-off-by: David Malcolm + +CVE: CVE-2021-42574 +Upstream-Status: Backport [https://gcc.gnu.org/git/gitweb.cgi?p=gcc.git;h=bef32d4a28595e933f24fef378cf052a30b674a7] +Signed-off-by: Pgowda + +--- + .../c-c++-common/Wbidi-chars-ranges.c | 54 ++++ + libcpp/lex.c | 251 ++++++++++++++---- + 2 files changed, 257 insertions(+), 48 deletions(-) + create mode 100644 gcc/testsuite/c-c++-common/Wbidi-chars-ranges.c + +diff --git a/gcc/testsuite/c-c++-common/Wbidi-chars-ranges.c b/gcc/testsuite/c-c++-common/Wbidi-chars-ranges.c +--- a/gcc/testsuite/c-c++-common/Wbidi-chars-ranges.c 1969-12-31 16:00:00.000000000 -0800 ++++ b/gcc/testsuite/c-c++-common/Wbidi-chars-ranges.c 2021-12-25 01:39:55.116281847 -0800 +@@ -0,0 +1,54 @@ ++/* PR preprocessor/103026 */ ++/* { dg-do compile } */ ++/* { dg-options "-Wbidi-chars=unpaired -fdiagnostics-show-caret" } */ ++/* Verify that we escape and underline pertinent bidirectional ++ control characters when quoting the source. */ ++ ++int test_unpaired_bidi () { ++ int isAdmin = 0; ++ /*‮ } ⁦if (isAdmin)⁩ ⁦ begin admins only */ ++/* { dg-warning "bidirectional" "" { target *-*-* } .-1 } */ ++#if 0 ++ { dg-begin-multiline-output "" } ++ /* } if (isAdmin) begin admins only */ ++ ~~~~~~~~ ~~~~~~~~ ^ ++ | | | ++ | | end of bidirectional context ++ U+202E (RIGHT-TO-LEFT OVERRIDE) U+2066 (LEFT-TO-RIGHT ISOLATE) ++ { dg-end-multiline-output "" } ++#endif ++ ++ __builtin_printf("You are an admin.\n"); ++ /* end admins only ‮ { ⁦*/ ++/* { dg-warning "bidirectional" "" { target *-*-* } .-1 } */ ++#if 0 ++ { dg-begin-multiline-output "" } ++ /* end admins only { */ ++ ~~~~~~~~ ~~~~~~~~ ^ ++ | | | ++ | | end of bidirectional context ++ | U+2066 (LEFT-TO-RIGHT ISOLATE) ++ U+202E (RIGHT-TO-LEFT OVERRIDE) ++ { dg-end-multiline-output "" } ++#endif ++ ++ return 0; ++} ++ ++int LRE_‪_PDF_\u202c; ++/* { dg-warning "mismatch" "" { target *-*-* } .-1 } */ ++#if 0 ++ { dg-begin-multiline-output "" } ++ int LRE__PDF_\u202c; ++ ~~~~~~~~ ^~~~~~ ++ { dg-end-multiline-output "" } ++#endif ++ ++const char *s1 = "LRE_‪_PDF_\u202c"; ++/* { dg-warning "mismatch" "" { target *-*-* } .-1 } */ ++#if 0 ++ { dg-begin-multiline-output "" } ++ const char *s1 = "LRE__PDF_\u202c"; ++ ~~~~~~~~ ^~~~~~ ++ { dg-end-multiline-output "" } ++#endif +diff --git a/libcpp/lex.c b/libcpp/lex.c +--- a/libcpp/lex.c 2021-12-25 01:41:16.522868808 -0800 ++++ b/libcpp/lex.c 2021-12-25 06:28:58.530680302 -0800 +@@ -1172,11 +1172,34 @@ namespace bidi { + /* All the UTF-8 encodings of bidi characters start with E2. */ + constexpr uchar utf8_start = 0xe2; + ++ struct context ++ { ++ context () {} ++ context (location_t loc, kind k, bool pdf, bool ucn) ++ : m_loc (loc), m_kind (k), m_pdf (pdf), m_ucn (ucn) ++ { ++ } ++ ++ kind get_pop_kind () const ++ { ++ return m_pdf ? kind::PDF : kind::PDI; ++ } ++ bool ucn_p () const ++ { ++ return m_ucn; ++ } ++ ++ location_t m_loc; ++ kind m_kind; ++ unsigned m_pdf : 1; ++ unsigned m_ucn : 1; ++ }; ++ + /* A vector holding currently open bidi contexts. We use a char for + each context, its LSB is 1 if it represents a PDF context, 0 if it + represents a PDI context. The next bit is 1 if this context was open + by a bidi character written as a UCN, and 0 when it was UTF-8. */ +- semi_embedded_vec vec; ++ semi_embedded_vec vec; + + /* Close the whole comment/identifier/string literal/character constant + context. */ +@@ -1193,19 +1216,19 @@ namespace bidi { + vec.truncate (len - 1); + } + +- /* Return the context of the Ith element. */ +- kind ctx_at (unsigned int i) ++ /* Return the pop kind of the context of the Ith element. */ ++ kind pop_kind_at (unsigned int i) + { +- return (vec[i] & 1) ? kind::PDF : kind::PDI; ++ return vec[i].get_pop_kind (); + } + +- /* Return which context is currently opened. */ ++ /* Return the pop kind of the context that is currently opened. */ + kind current_ctx () + { + unsigned int len = vec.count (); + if (len == 0) + return kind::NONE; +- return ctx_at (len - 1); ++ return vec[len - 1].get_pop_kind (); + } + + /* Return true if the current context comes from a UCN origin, that is, +@@ -1214,11 +1237,19 @@ namespace bidi { + { + unsigned int len = vec.count (); + gcc_checking_assert (len > 0); +- return (vec[len - 1] >> 1) & 1; ++ return vec[len - 1].m_ucn; + } + +- /* We've read a bidi char, update the current vector as necessary. */ +- void on_char (kind k, bool ucn_p) ++ location_t current_ctx_loc () ++ { ++ unsigned int len = vec.count (); ++ gcc_checking_assert (len > 0); ++ return vec[len - 1].m_loc; ++ } ++ ++ /* We've read a bidi char, update the current vector as necessary. ++ LOC is only valid when K is not kind::NONE. */ ++ void on_char (kind k, bool ucn_p, location_t loc) + { + switch (k) + { +@@ -1226,12 +1257,12 @@ namespace bidi { + case kind::RLE: + case kind::LRO: + case kind::RLO: +- vec.push (ucn_p ? 3u : 1u); ++ vec.push (context (loc, k, true, ucn_p)); + break; + case kind::LRI: + case kind::RLI: + case kind::FSI: +- vec.push (ucn_p ? 2u : 0u); ++ vec.push (context (loc, k, false, ucn_p)); + break; + /* PDF terminates the scope of the last LRE, RLE, LRO, or RLO + whose scope has not yet been terminated. */ +@@ -1245,7 +1276,7 @@ namespace bidi { + yet been terminated. */ + case kind::PDI: + for (int i = vec.count () - 1; i >= 0; --i) +- if (ctx_at (i) == kind::PDI) ++ if (pop_kind_at (i) == kind::PDI) + { + vec.truncate (i); + break; +@@ -1295,10 +1326,47 @@ namespace bidi { + } + } + ++/* Get location_t for the range of bytes [START, START + NUM_BYTES) ++ within the current line in FILE, with the caret at START. */ ++ ++static location_t ++get_location_for_byte_range_in_cur_line (cpp_reader *pfile, ++ const unsigned char *const start, ++ size_t num_bytes) ++{ ++ gcc_checking_assert (num_bytes > 0); ++ ++ /* CPP_BUF_COLUMN and linemap_position_for_column both refer ++ to offsets in bytes, but CPP_BUF_COLUMN is 0-based, ++ whereas linemap_position_for_column is 1-based. */ ++ ++ /* Get 0-based offsets within the line. */ ++ size_t start_offset = CPP_BUF_COLUMN (pfile->buffer, start); ++ size_t end_offset = start_offset + num_bytes - 1; ++ ++ /* Now convert to location_t, where "columns" are 1-based byte offsets. */ ++ location_t start_loc = linemap_position_for_column (pfile->line_table, ++ start_offset + 1); ++ location_t end_loc = linemap_position_for_column (pfile->line_table, ++ end_offset + 1); ++ ++ if (start_loc == end_loc) ++ return start_loc; ++ ++ source_range src_range; ++ src_range.m_start = start_loc; ++ src_range.m_finish = end_loc; ++ location_t combined_loc = COMBINE_LOCATION_DATA (pfile->line_table, ++ start_loc, ++ src_range, ++ NULL); ++ return combined_loc; ++} ++ + /* Parse a sequence of 3 bytes starting with P and return its bidi code. */ + + static bidi::kind +-get_bidi_utf8 (const unsigned char *const p) ++get_bidi_utf8_1 (const unsigned char *const p) + { + gcc_checking_assert (p[0] == bidi::utf8_start); + +@@ -1340,10 +1408,25 @@ get_bidi_utf8 (const unsigned char *cons + return bidi::kind::NONE; + } + ++/* Parse a sequence of 3 bytes starting with P and return its bidi code. ++ If the kind is not NONE, write the location to *OUT.*/ ++ ++static bidi::kind ++get_bidi_utf8 (cpp_reader *pfile, const unsigned char *const p, location_t *out) ++{ ++ bidi::kind result = get_bidi_utf8_1 (p); ++ if (result != bidi::kind::NONE) ++ { ++ /* We have a sequence of 3 bytes starting at P. */ ++ *out = get_location_for_byte_range_in_cur_line (pfile, p, 3); ++ } ++ return result; ++} ++ + /* Parse a UCN where P points just past \u or \U and return its bidi code. */ + + static bidi::kind +-get_bidi_ucn (const unsigned char *p, bool is_U) ++get_bidi_ucn_1 (const unsigned char *p, bool is_U) + { + /* 6.4.3 Universal Character Names + \u hex-quad +@@ -1412,6 +1495,62 @@ get_bidi_ucn (const unsigned char *p, bo + return bidi::kind::NONE; + } + ++/* Parse a UCN where P points just past \u or \U and return its bidi code. ++ If the kind is not NONE, write the location to *OUT.*/ ++ ++static bidi::kind ++get_bidi_ucn (cpp_reader *pfile, const unsigned char *p, bool is_U, ++ location_t *out) ++{ ++ bidi::kind result = get_bidi_ucn_1 (p, is_U); ++ if (result != bidi::kind::NONE) ++ { ++ const unsigned char *start = p - 2; ++ size_t num_bytes = 2 + (is_U ? 8 : 4); ++ *out = get_location_for_byte_range_in_cur_line (pfile, start, num_bytes); ++ } ++ return result; ++} ++ ++/* Subclass of rich_location for reporting on unpaired UTF-8 ++ bidirectional control character(s). ++ Escape the source lines on output, and show all unclosed ++ bidi context, labelling everything. */ ++ ++class unpaired_bidi_rich_location : public rich_location ++{ ++ public: ++ class custom_range_label : public range_label ++ { ++ public: ++ label_text get_text (unsigned range_idx) const FINAL OVERRIDE ++ { ++ /* range 0 is the primary location; each subsequent range i + 1 ++ is for bidi::vec[i]. */ ++ if (range_idx > 0) ++ { ++ const bidi::context &ctxt (bidi::vec[range_idx - 1]); ++ return label_text::borrow (bidi::to_str (ctxt.m_kind)); ++ } ++ else ++ return label_text::borrow (_("end of bidirectional context")); ++ } ++ }; ++ ++ unpaired_bidi_rich_location (cpp_reader *pfile, location_t loc) ++ : rich_location (pfile->line_table, loc, &m_custom_label) ++ { ++ set_escape_on_output (true); ++ for (unsigned i = 0; i < bidi::vec.count (); i++) ++ add_range (bidi::vec[i].m_loc, ++ SHOW_RANGE_WITHOUT_CARET, ++ &m_custom_label); ++ } ++ ++ private: ++ custom_range_label m_custom_label; ++}; ++ + /* We're closing a bidi context, that is, we've encountered a newline, + are closing a C-style comment, or are at the end of a string literal, + character constant, or identifier. Warn if this context was not +@@ -1427,11 +1566,17 @@ maybe_warn_bidi_on_close (cpp_reader *pf + const location_t loc + = linemap_position_for_column (pfile->line_table, + CPP_BUF_COLUMN (pfile->buffer, p)); +- rich_location rich_loc (pfile->line_table, loc); +- rich_loc.set_escape_on_output (true); +- cpp_warning_at (pfile, CPP_W_BIDIRECTIONAL, &rich_loc, +- "unpaired UTF-8 bidirectional control character " +- "detected"); ++ unpaired_bidi_rich_location rich_loc (pfile, loc); ++ /* cpp_callbacks doesn't yet have a way to handle singular vs plural ++ forms of a diagnostic, so fake it for now. */ ++ if (bidi::vec.count () > 1) ++ cpp_warning_at (pfile, CPP_W_BIDIRECTIONAL, &rich_loc, ++ "unpaired UTF-8 bidirectional control characters " ++ "detected"); ++ else ++ cpp_warning_at (pfile, CPP_W_BIDIRECTIONAL, &rich_loc, ++ "unpaired UTF-8 bidirectional control character " ++ "detected"); + } + /* We're done with this context. */ + bidi::on_close (); +@@ -1439,12 +1584,13 @@ maybe_warn_bidi_on_close (cpp_reader *pf + + /* We're at the beginning or in the middle of an identifier/comment/string + literal/character constant. Warn if we've encountered a bidi character. +- KIND says which bidi character it was; P points to it in the character +- stream. UCN_P is true iff this bidi character was written as a UCN. */ ++ KIND says which bidi control character it was; UCN_P is true iff this bidi ++ control character was written as a UCN. LOC is the location of the ++ character, but is only valid if KIND != bidi::kind::NONE. */ + + static void +-maybe_warn_bidi_on_char (cpp_reader *pfile, const uchar *p, bidi::kind kind, +- bool ucn_p) ++maybe_warn_bidi_on_char (cpp_reader *pfile, bidi::kind kind, ++ bool ucn_p, location_t loc) + { + if (__builtin_expect (kind == bidi::kind::NONE, 1)) + return; +@@ -1453,9 +1599,6 @@ maybe_warn_bidi_on_char (cpp_reader *pfi + + if (warn_bidi != bidirectional_none) + { +- const location_t loc +- = linemap_position_for_column (pfile->line_table, +- CPP_BUF_COLUMN (pfile->buffer, p)); + rich_location rich_loc (pfile->line_table, loc); + rich_loc.set_escape_on_output (true); + +@@ -1467,9 +1610,12 @@ maybe_warn_bidi_on_char (cpp_reader *pfi + { + if (warn_bidi == bidirectional_unpaired + && bidi::current_ctx_ucn_p () != ucn_p) +- cpp_warning_at (pfile, CPP_W_BIDIRECTIONAL, &rich_loc, +- "UTF-8 vs UCN mismatch when closing " +- "a context by \"%s\"", bidi::to_str (kind)); ++ { ++ rich_loc.add_range (bidi::current_ctx_loc ()); ++ cpp_warning_at (pfile, CPP_W_BIDIRECTIONAL, &rich_loc, ++ "UTF-8 vs UCN mismatch when closing " ++ "a context by \"%s\"", bidi::to_str (kind)); ++ } + } + else if (warn_bidi == bidirectional_any) + { +@@ -1484,7 +1630,7 @@ maybe_warn_bidi_on_char (cpp_reader *pfi + } + } + /* We're done with this context. */ +- bidi::on_char (kind, ucn_p); ++ bidi::on_char (kind, ucn_p, loc); + } + + /* Skip a C-style block comment. We find the end of the comment by +@@ -1552,8 +1698,9 @@ _cpp_skip_block_comment (cpp_reader *pfi + a bidirectional control character. */ + else if (__builtin_expect (c == bidi::utf8_start, 0) && warn_bidi_p) + { +- bidi::kind kind = get_bidi_utf8 (cur - 1); +- maybe_warn_bidi_on_char (pfile, cur, kind, /*ucn_p=*/false); ++ location_t loc; ++ bidi::kind kind = get_bidi_utf8 (pfile, cur - 1, &loc); ++ maybe_warn_bidi_on_char (pfile, kind, /*ucn_p=*/false, loc); + } + } + +@@ -1586,9 +1733,9 @@ skip_line_comment (cpp_reader *pfile) + { + if (__builtin_expect (*buffer->cur == bidi::utf8_start, 0)) + { +- bidi::kind kind = get_bidi_utf8 (buffer->cur); +- maybe_warn_bidi_on_char (pfile, buffer->cur, kind, +- /*ucn_p=*/false); ++ location_t loc; ++ bidi::kind kind = get_bidi_utf8 (pfile, buffer->cur, &loc); ++ maybe_warn_bidi_on_char (pfile, kind, /*ucn_p=*/false, loc); + } + buffer->cur++; + } +@@ -1734,9 +1881,9 @@ forms_identifier_p (cpp_reader *pfile, i + if (__builtin_expect (*buffer->cur == bidi::utf8_start, 0) + && warn_bidi_p) + { +- bidi::kind kind = get_bidi_utf8 (buffer->cur); +- maybe_warn_bidi_on_char (pfile, buffer->cur, kind, +- /*ucn_p=*/false); ++ location_t loc; ++ bidi::kind kind = get_bidi_utf8 (pfile, buffer->cur, &loc); ++ maybe_warn_bidi_on_char (pfile, kind, /*ucn_p=*/false, loc); + } + if (_cpp_valid_utf8 (pfile, &buffer->cur, buffer->rlimit, 1 + !first, + state, &s)) +@@ -1748,10 +1895,12 @@ forms_identifier_p (cpp_reader *pfile, i + buffer->cur += 2; + if (warn_bidi_p) + { +- bidi::kind kind = get_bidi_ucn (buffer->cur, +- buffer->cur[-1] == 'U'); +- maybe_warn_bidi_on_char (pfile, buffer->cur, kind, +- /*ucn_p=*/true); ++ location_t loc; ++ bidi::kind kind = get_bidi_ucn (pfile, ++ buffer->cur, ++ buffer->cur[-1] == 'U', ++ &loc); ++ maybe_warn_bidi_on_char (pfile, kind, /*ucn_p=*/true, loc); + } + if (_cpp_valid_ucn (pfile, &buffer->cur, buffer->rlimit, 1 + !first, + state, &s, NULL, NULL)) +@@ -2327,12 +2476,15 @@ lex_raw_string (cpp_reader *pfile, cpp_t + } + else if (__builtin_expect ((unsigned char) c == bidi::utf8_start, 0) + && warn_bidi_p) +- maybe_warn_bidi_on_char (pfile, pos - 1, get_bidi_utf8 (pos - 1), +- /*ucn_p=*/false); ++ { ++ location_t loc; ++ bidi::kind kind = get_bidi_utf8 (pfile, cur - 1, &loc); ++ maybe_warn_bidi_on_char (pfile, kind, /*ucn_p=*/false, loc); ++ } + } + + if (warn_bidi_p) +- maybe_warn_bidi_on_close (pfile, pos); ++ maybe_warn_bidi_on_close (pfile, cur); + + if (CPP_OPTION (pfile, user_literals)) + { +@@ -2438,8 +2590,10 @@ lex_string (cpp_reader *pfile, cpp_token + { + if ((cur[0] == 'u' || cur[0] == 'U') && warn_bidi_p) + { +- bidi::kind kind = get_bidi_ucn (cur + 1, cur[0] == 'U'); +- maybe_warn_bidi_on_char (pfile, cur, kind, /*ucn_p=*/true); ++ location_t loc; ++ bidi::kind kind = get_bidi_ucn (pfile, cur + 1, cur[0] == 'U', ++ &loc); ++ maybe_warn_bidi_on_char (pfile, kind, /*ucn_p=*/true, loc); + } + cur++; + } +@@ -2467,8 +2621,9 @@ lex_string (cpp_reader *pfile, cpp_token + saw_NUL = true; + else if (__builtin_expect (c == bidi::utf8_start, 0) && warn_bidi_p) + { +- bidi::kind kind = get_bidi_utf8 (cur - 1); +- maybe_warn_bidi_on_char (pfile, cur - 1, kind, /*ucn_p=*/false); ++ location_t loc; ++ bidi::kind kind = get_bidi_utf8 (pfile, cur - 1, &loc); ++ maybe_warn_bidi_on_char (pfile, kind, /*ucn_p=*/false, loc); + } + } + From patchwork Tue Jan 11 14:32:50 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Mittal, Anuj" X-Patchwork-Id: 2257 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id B0C45C433FE for ; Tue, 11 Jan 2022 14:33:15 +0000 (UTC) Received: from mga05.intel.com (mga05.intel.com [192.55.52.43]) by mx.groups.io with SMTP id smtpd.web12.7795.1641911594309733958 for ; Tue, 11 Jan 2022 06:33:15 -0800 Authentication-Results: mx.groups.io; dkim=fail reason="unable to parse pub key" header.i=@intel.com header.s=intel header.b=Q8kI70/3; spf=pass (domain: intel.com, ip: 192.55.52.43, mailfrom: anuj.mittal@intel.com) DKIM-Signature: v=1; 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11 Jan 2022 06:33:12 -0800 From: Anuj Mittal To: openembedded-core@lists.openembedded.org Subject: [hardknott][PATCH 6/9] busybox: backport patches to fix CVEs Date: Tue, 11 Jan 2022 22:32:50 +0800 Message-Id: <33f6fb263edd7dd0f5f97f1cf02f63978dbfba09.1641911316.git.anuj.mittal@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: References: MIME-Version: 1.0 List-Id: X-Webhook-Received: from li982-79.members.linode.com [45.33.32.79] by aws-us-west-2-korg-lkml-1.web.codeaurora.org with HTTPS for ; Tue, 11 Jan 2022 14:33:15 -0000 X-Groupsio-URL: https://lists.openembedded.org/g/openembedded-core/message/160407 From: Chen Qi Backport patches to fix the following CVEs: CVE-2021-42373 CVE-2021-42378 CVE-2021-42379 CVE-2021-42380 CVE-2021-42381 CVE-2021-42382 CVE-2021-42383 CVE-2021-42384 CVE-2021-42385 CVE-2021-42386 Signed-off-by: Chen Qi Signed-off-by: Anuj Mittal --- .../busybox/busybox/0001-awk-fix-CVEs.patch | 3266 +++++++++++++++++ .../0002-man-fix-segfault-in-man-1.patch | 30 + meta/recipes-core/busybox/busybox_1.33.2.bb | 2 + 3 files changed, 3298 insertions(+) create mode 100644 meta/recipes-core/busybox/busybox/0001-awk-fix-CVEs.patch create mode 100644 meta/recipes-core/busybox/busybox/0002-man-fix-segfault-in-man-1.patch diff --git a/meta/recipes-core/busybox/busybox/0001-awk-fix-CVEs.patch b/meta/recipes-core/busybox/busybox/0001-awk-fix-CVEs.patch new file mode 100644 index 0000000000..c07b53ebfd --- /dev/null +++ b/meta/recipes-core/busybox/busybox/0001-awk-fix-CVEs.patch @@ -0,0 +1,3266 @@ +From cf542caeed195af05fa6205341f829ccee53f8c2 Mon Sep 17 00:00:00 2001 +From: Chen Qi +Date: Tue, 4 Jan 2022 17:48:03 -0800 +Subject: [PATCH] awk: fix CVEs + +The awk CVEs is hard to be separated, thus we use the following method +to format the current patch. +git rev-list --reverse 1_33_2..1_34_1 -- editors/awk.c | xargs git cherry-pick +git reset HEAD~66 && git add . && git commit + +CVE: CVE-2021-42378 +CVE: CVE-2021-42379 +CVE: CVE-2021-42380 +CVE: CVE-2021-42381 +CVE: CVE-2021-42382 +CVE: CVE-2021-42383 +CVE: CVE-2021-42384 +CVE: CVE-2021-42385 +CVE: CVE-2021-42386 + +Upstream-Status: Backport + +Signed-off-by: Chen Qi +--- + editors/awk.c | 2060 +++++++++++++++++++++++----------------- + testsuite/awk.tests | 62 +- + testsuite/printf.tests | 5 + + 3 files changed, 1264 insertions(+), 863 deletions(-) + +diff --git a/editors/awk.c b/editors/awk.c +index 2c15f9e4e..f6314ac72 100644 +--- a/editors/awk.c ++++ b/editors/awk.c +@@ -66,6 +66,8 @@ + #endif + #ifndef debug_printf_parse + # define debug_printf_parse(...) (fprintf(stderr, __VA_ARGS__)) ++#else ++# define debug_parse_print_tc(...) ((void)0) + #endif + + +@@ -91,7 +93,6 @@ enum { + }; + + #define MAXVARFMT 240 +-#define MINNVBLOCK 64 + + /* variable flags */ + #define VF_NUMBER 0x0001 /* 1 = primary type is number */ +@@ -101,7 +102,7 @@ enum { + #define VF_USER 0x0200 /* 1 = user input (may be numeric string) */ + #define VF_SPECIAL 0x0400 /* 1 = requires extra handling when changed */ + #define VF_WALK 0x0800 /* 1 = variable has alloc'd x.walker list */ +-#define VF_FSTR 0x1000 /* 1 = var::string points to fstring buffer */ ++#define VF_FSTR 0x1000 /* 1 = don't free() var::string (not malloced, or is owned by something else) */ + #define VF_CHILD 0x2000 /* 1 = function arg; x.parent points to source */ + #define VF_DIRTY 0x4000 /* 1 = variable was set explicitly */ + +@@ -118,8 +119,8 @@ typedef struct walker_list { + /* Variable */ + typedef struct var_s { + unsigned type; /* flags */ +- double number; + char *string; ++ double number; + union { + int aidx; /* func arg idx (for compilation stage) */ + struct xhash_s *array; /* array ptr */ +@@ -138,6 +139,7 @@ typedef struct chain_s { + /* Function */ + typedef struct func_s { + unsigned nargs; ++ smallint defined; + struct chain_s body; + } func; + +@@ -177,7 +179,7 @@ typedef struct node_s { + struct node_s *n; + var *v; + int aidx; +- char *new_progname; ++ const char *new_progname; + regex_t *re; + } l; + union { +@@ -190,91 +192,120 @@ typedef struct node_s { + } a; + } node; + +-/* Block of temporary variables */ +-typedef struct nvblock_s { +- int size; +- var *pos; +- struct nvblock_s *prev; +- struct nvblock_s *next; +- var nv[]; +-} nvblock; +- + typedef struct tsplitter_s { + node n; + regex_t re[2]; + } tsplitter; + + /* simple token classes */ +-/* Order and hex values are very important!!! See next_token() */ +-#define TC_SEQSTART (1 << 0) /* ( */ +-#define TC_SEQTERM (1 << 1) /* ) */ +-#define TC_REGEXP (1 << 2) /* /.../ */ +-#define TC_OUTRDR (1 << 3) /* | > >> */ +-#define TC_UOPPOST (1 << 4) /* unary postfix operator */ +-#define TC_UOPPRE1 (1 << 5) /* unary prefix operator */ +-#define TC_BINOPX (1 << 6) /* two-opnd operator */ +-#define TC_IN (1 << 7) +-#define TC_COMMA (1 << 8) +-#define TC_PIPE (1 << 9) /* input redirection pipe */ +-#define TC_UOPPRE2 (1 << 10) /* unary prefix operator */ +-#define TC_ARRTERM (1 << 11) /* ] */ +-#define TC_GRPSTART (1 << 12) /* { */ +-#define TC_GRPTERM (1 << 13) /* } */ +-#define TC_SEMICOL (1 << 14) +-#define TC_NEWLINE (1 << 15) +-#define TC_STATX (1 << 16) /* ctl statement (for, next...) */ +-#define TC_WHILE (1 << 17) +-#define TC_ELSE (1 << 18) +-#define TC_BUILTIN (1 << 19) ++/* order and hex values are very important!!! See next_token() */ ++#define TC_LPAREN (1 << 0) /* ( */ ++#define TC_RPAREN (1 << 1) /* ) */ ++#define TC_REGEXP (1 << 2) /* /.../ */ ++#define TC_OUTRDR (1 << 3) /* | > >> */ ++#define TC_UOPPOST (1 << 4) /* unary postfix operator ++ -- */ ++#define TC_UOPPRE1 (1 << 5) /* unary prefix operator ++ -- $ */ ++#define TC_BINOPX (1 << 6) /* two-opnd operator */ ++#define TC_IN (1 << 7) /* 'in' */ ++#define TC_COMMA (1 << 8) /* , */ ++#define TC_PIPE (1 << 9) /* input redirection pipe | */ ++#define TC_UOPPRE2 (1 << 10) /* unary prefix operator + - ! */ ++#define TC_ARRTERM (1 << 11) /* ] */ ++#define TC_LBRACE (1 << 12) /* { */ ++#define TC_RBRACE (1 << 13) /* } */ ++#define TC_SEMICOL (1 << 14) /* ; */ ++#define TC_NEWLINE (1 << 15) ++#define TC_STATX (1 << 16) /* ctl statement (for, next...) */ ++#define TC_WHILE (1 << 17) /* 'while' */ ++#define TC_ELSE (1 << 18) /* 'else' */ ++#define TC_BUILTIN (1 << 19) + /* This costs ~50 bytes of code. + * A separate class to support deprecated "length" form. If we don't need that + * (i.e. if we demand that only "length()" with () is valid), then TC_LENGTH + * can be merged with TC_BUILTIN: + */ +-#define TC_LENGTH (1 << 20) +-#define TC_GETLINE (1 << 21) +-#define TC_FUNCDECL (1 << 22) /* 'function' 'func' */ +-#define TC_BEGIN (1 << 23) +-#define TC_END (1 << 24) +-#define TC_EOF (1 << 25) +-#define TC_VARIABLE (1 << 26) +-#define TC_ARRAY (1 << 27) +-#define TC_FUNCTION (1 << 28) +-#define TC_STRING (1 << 29) +-#define TC_NUMBER (1 << 30) +- +-#define TC_UOPPRE (TC_UOPPRE1 | TC_UOPPRE2) +- +-/* combined token classes */ +-#define TC_BINOP (TC_BINOPX | TC_COMMA | TC_PIPE | TC_IN) +-//#define TC_UNARYOP (TC_UOPPRE | TC_UOPPOST) +-#define TC_OPERAND (TC_VARIABLE | TC_ARRAY | TC_FUNCTION \ +- | TC_BUILTIN | TC_LENGTH | TC_GETLINE \ +- | TC_SEQSTART | TC_STRING | TC_NUMBER) +- +-#define TC_STATEMNT (TC_STATX | TC_WHILE) +-#define TC_OPTERM (TC_SEMICOL | TC_NEWLINE) ++#define TC_LENGTH (1 << 20) /* 'length' */ ++#define TC_GETLINE (1 << 21) /* 'getline' */ ++#define TC_FUNCDECL (1 << 22) /* 'function' 'func' */ ++#define TC_BEGIN (1 << 23) /* 'BEGIN' */ ++#define TC_END (1 << 24) /* 'END' */ ++#define TC_EOF (1 << 25) ++#define TC_VARIABLE (1 << 26) /* name */ ++#define TC_ARRAY (1 << 27) /* name[ */ ++#define TC_FUNCTION (1 << 28) /* name( */ ++#define TC_STRING (1 << 29) /* "..." */ ++#define TC_NUMBER (1 << 30) ++ ++#ifndef debug_parse_print_tc ++static void debug_parse_print_tc(uint32_t n) ++{ ++ if (n & TC_LPAREN ) debug_printf_parse(" LPAREN" ); ++ if (n & TC_RPAREN ) debug_printf_parse(" RPAREN" ); ++ if (n & TC_REGEXP ) debug_printf_parse(" REGEXP" ); ++ if (n & TC_OUTRDR ) debug_printf_parse(" OUTRDR" ); ++ if (n & TC_UOPPOST ) debug_printf_parse(" UOPPOST" ); ++ if (n & TC_UOPPRE1 ) debug_printf_parse(" UOPPRE1" ); ++ if (n & TC_BINOPX ) debug_printf_parse(" BINOPX" ); ++ if (n & TC_IN ) debug_printf_parse(" IN" ); ++ if (n & TC_COMMA ) debug_printf_parse(" COMMA" ); ++ if (n & TC_PIPE ) debug_printf_parse(" PIPE" ); ++ if (n & TC_UOPPRE2 ) debug_printf_parse(" UOPPRE2" ); ++ if (n & TC_ARRTERM ) debug_printf_parse(" ARRTERM" ); ++ if (n & TC_LBRACE ) debug_printf_parse(" LBRACE" ); ++ if (n & TC_RBRACE ) debug_printf_parse(" RBRACE" ); ++ if (n & TC_SEMICOL ) debug_printf_parse(" SEMICOL" ); ++ if (n & TC_NEWLINE ) debug_printf_parse(" NEWLINE" ); ++ if (n & TC_STATX ) debug_printf_parse(" STATX" ); ++ if (n & TC_WHILE ) debug_printf_parse(" WHILE" ); ++ if (n & TC_ELSE ) debug_printf_parse(" ELSE" ); ++ if (n & TC_BUILTIN ) debug_printf_parse(" BUILTIN" ); ++ if (n & TC_LENGTH ) debug_printf_parse(" LENGTH" ); ++ if (n & TC_GETLINE ) debug_printf_parse(" GETLINE" ); ++ if (n & TC_FUNCDECL) debug_printf_parse(" FUNCDECL"); ++ if (n & TC_BEGIN ) debug_printf_parse(" BEGIN" ); ++ if (n & TC_END ) debug_printf_parse(" END" ); ++ if (n & TC_EOF ) debug_printf_parse(" EOF" ); ++ if (n & TC_VARIABLE) debug_printf_parse(" VARIABLE"); ++ if (n & TC_ARRAY ) debug_printf_parse(" ARRAY" ); ++ if (n & TC_FUNCTION) debug_printf_parse(" FUNCTION"); ++ if (n & TC_STRING ) debug_printf_parse(" STRING" ); ++ if (n & TC_NUMBER ) debug_printf_parse(" NUMBER" ); ++} ++#endif ++ ++/* combined token classes ("token [class] sets") */ ++#define TS_UOPPRE (TC_UOPPRE1 | TC_UOPPRE2) ++ ++#define TS_BINOP (TC_BINOPX | TC_COMMA | TC_PIPE | TC_IN) ++//#define TS_UNARYOP (TS_UOPPRE | TC_UOPPOST) ++#define TS_OPERAND (TC_VARIABLE | TC_ARRAY | TC_FUNCTION \ ++ | TC_BUILTIN | TC_LENGTH | TC_GETLINE \ ++ | TC_LPAREN | TC_STRING | TC_NUMBER) ++ ++#define TS_LVALUE (TC_VARIABLE | TC_ARRAY) ++#define TS_STATEMNT (TC_STATX | TC_WHILE) + + /* word tokens, cannot mean something else if not expected */ +-#define TC_WORD (TC_IN | TC_STATEMNT | TC_ELSE \ +- | TC_BUILTIN | TC_LENGTH | TC_GETLINE \ +- | TC_FUNCDECL | TC_BEGIN | TC_END) ++#define TS_WORD (TC_IN | TS_STATEMNT | TC_ELSE \ ++ | TC_BUILTIN | TC_LENGTH | TC_GETLINE \ ++ | TC_FUNCDECL | TC_BEGIN | TC_END) + + /* discard newlines after these */ +-#define TC_NOTERM (TC_COMMA | TC_GRPSTART | TC_GRPTERM \ +- | TC_BINOP | TC_OPTERM) ++#define TS_NOTERM (TS_BINOP | TC_COMMA | TC_LBRACE | TC_RBRACE \ ++ | TC_SEMICOL | TC_NEWLINE) + + /* what can expression begin with */ +-#define TC_OPSEQ (TC_OPERAND | TC_UOPPRE | TC_REGEXP) ++#define TS_OPSEQ (TS_OPERAND | TS_UOPPRE | TC_REGEXP) + /* what can group begin with */ +-#define TC_GRPSEQ (TC_OPSEQ | TC_OPTERM | TC_STATEMNT | TC_GRPSTART) ++#define TS_GRPSEQ (TS_OPSEQ | TS_STATEMNT \ ++ | TC_SEMICOL | TC_NEWLINE | TC_LBRACE) + +-/* if previous token class is CONCAT1 and next is CONCAT2, concatenation */ ++/* if previous token class is CONCAT_L and next is CONCAT_R, concatenation */ + /* operator is inserted between them */ +-#define TC_CONCAT1 (TC_VARIABLE | TC_ARRTERM | TC_SEQTERM \ ++#define TS_CONCAT_L (TC_VARIABLE | TC_ARRTERM | TC_RPAREN \ + | TC_STRING | TC_NUMBER | TC_UOPPOST \ + | TC_LENGTH) +-#define TC_CONCAT2 (TC_OPERAND | TC_UOPPRE) ++#define TS_CONCAT_R (TS_OPERAND | TS_UOPPRE) + + #define OF_RES1 0x010000 + #define OF_RES2 0x020000 +@@ -284,13 +315,12 @@ typedef struct tsplitter_s { + #define OF_CHECKED 0x200000 + #define OF_REQUIRED 0x400000 + +- + /* combined operator flags */ + #define xx 0 + #define xV OF_RES2 + #define xS (OF_RES2 | OF_STR2) + #define Vx OF_RES1 +-#define Rx (OF_RES1 | OF_NUM1 | OF_REQUIRED) ++#define Rx OF_REQUIRED + #define VV (OF_RES1 | OF_RES2) + #define Nx (OF_RES1 | OF_NUM1) + #define NV (OF_RES1 | OF_NUM1 | OF_RES2) +@@ -302,8 +332,7 @@ typedef struct tsplitter_s { + #define OPNMASK 0x007F + + /* operator priority is a highest byte (even: r->l, odd: l->r grouping) +- * For builtins it has different meaning: n n s3 s2 s1 v3 v2 v1, +- * n - min. number of args, vN - resolve Nth arg to var, sN - resolve to string ++ * (for builtins it has different meaning) + */ + #undef P + #undef PRIMASK +@@ -313,10 +342,8 @@ typedef struct tsplitter_s { + #define PRIMASK2 0x7E000000 + + /* Operation classes */ +- + #define SHIFT_TIL_THIS 0x0600 + #define RECUR_FROM_THIS 0x1000 +- + enum { + OC_DELETE = 0x0100, OC_EXEC = 0x0200, OC_NEWSOURCE = 0x0300, + OC_PRINT = 0x0400, OC_PRINTF = 0x0500, OC_WALKINIT = 0x0600, +@@ -358,8 +385,8 @@ enum { + #define NTCC '\377' + + static const char tokenlist[] ALIGN1 = +- "\1(" NTC /* TC_SEQSTART */ +- "\1)" NTC /* TC_SEQTERM */ ++ "\1(" NTC /* TC_LPAREN */ ++ "\1)" NTC /* TC_RPAREN */ + "\1/" NTC /* TC_REGEXP */ + "\2>>" "\1>" "\1|" NTC /* TC_OUTRDR */ + "\2++" "\2--" NTC /* TC_UOPPOST */ +@@ -376,8 +403,8 @@ static const char tokenlist[] ALIGN1 = + "\1|" NTC /* TC_PIPE */ + "\1+" "\1-" "\1!" NTC /* TC_UOPPRE2 */ + "\1]" NTC /* TC_ARRTERM */ +- "\1{" NTC /* TC_GRPSTART */ +- "\1}" NTC /* TC_GRPTERM */ ++ "\1{" NTC /* TC_LBRACE */ ++ "\1}" NTC /* TC_RBRACE */ + "\1;" NTC /* TC_SEMICOL */ + "\1\n" NTC /* TC_NEWLINE */ + "\2if" "\2do" "\3for" "\5break" /* TC_STATX */ +@@ -391,7 +418,7 @@ static const char tokenlist[] ALIGN1 = + "\5close" "\6system" "\6fflush" "\5atan2" + "\3cos" "\3exp" "\3int" "\3log" + "\4rand" "\3sin" "\4sqrt" "\5srand" +- "\6gensub" "\4gsub" "\5index" /* "\6length" was here */ ++ "\6gensub" "\4gsub" "\5index" /* "\6length" was here */ + "\5match" "\5split" "\7sprintf" "\3sub" + "\6substr" "\7systime" "\10strftime" "\6mktime" + "\7tolower" "\7toupper" NTC +@@ -403,25 +430,32 @@ static const char tokenlist[] ALIGN1 = + /* compiler adds trailing "\0" */ + ; + +-#define OC_B OC_BUILTIN +- + static const uint32_t tokeninfo[] ALIGN4 = { + 0, + 0, +- OC_REGEXP, ++#define TI_REGEXP OC_REGEXP ++ TI_REGEXP, + xS|'a', xS|'w', xS|'|', + OC_UNARY|xV|P(9)|'p', OC_UNARY|xV|P(9)|'m', +- OC_UNARY|xV|P(9)|'P', OC_UNARY|xV|P(9)|'M', OC_FIELD|xV|P(5), ++#define TI_PREINC (OC_UNARY|xV|P(9)|'P') ++#define TI_PREDEC (OC_UNARY|xV|P(9)|'M') ++ TI_PREINC, TI_PREDEC, OC_FIELD|xV|P(5), + OC_COMPARE|VV|P(39)|5, OC_MOVE|VV|P(74), OC_REPLACE|NV|P(74)|'+', OC_REPLACE|NV|P(74)|'-', + OC_REPLACE|NV|P(74)|'*', OC_REPLACE|NV|P(74)|'/', OC_REPLACE|NV|P(74)|'%', OC_REPLACE|NV|P(74)|'&', + OC_BINARY|NV|P(29)|'+', OC_BINARY|NV|P(29)|'-', OC_REPLACE|NV|P(74)|'&', OC_BINARY|NV|P(15)|'&', + OC_BINARY|NV|P(25)|'/', OC_BINARY|NV|P(25)|'%', OC_BINARY|NV|P(15)|'&', OC_BINARY|NV|P(25)|'*', + OC_COMPARE|VV|P(39)|4, OC_COMPARE|VV|P(39)|3, OC_COMPARE|VV|P(39)|0, OC_COMPARE|VV|P(39)|1, +- OC_COMPARE|VV|P(39)|2, OC_MATCH|Sx|P(45)|'!', OC_MATCH|Sx|P(45)|'~', OC_LAND|Vx|P(55), +- OC_LOR|Vx|P(59), OC_TERNARY|Vx|P(64)|'?', OC_COLON|xx|P(67)|':', +- OC_IN|SV|P(49), /* TC_IN */ +- OC_COMMA|SS|P(80), +- OC_PGETLINE|SV|P(37), ++#define TI_LESS (OC_COMPARE|VV|P(39)|2) ++ TI_LESS, OC_MATCH|Sx|P(45)|'!', OC_MATCH|Sx|P(45)|'~', OC_LAND|Vx|P(55), ++#define TI_TERNARY (OC_TERNARY|Vx|P(64)|'?') ++#define TI_COLON (OC_COLON|xx|P(67)|':') ++ OC_LOR|Vx|P(59), TI_TERNARY, TI_COLON, ++#define TI_IN (OC_IN|SV|P(49)) ++ TI_IN, ++#define TI_COMMA (OC_COMMA|SS|P(80)) ++ TI_COMMA, ++#define TI_PGETLINE (OC_PGETLINE|SV|P(37)) ++ TI_PGETLINE, + OC_UNARY|xV|P(19)|'+', OC_UNARY|xV|P(19)|'-', OC_UNARY|xV|P(19)|'!', + 0, /* ] */ + 0, +@@ -434,20 +468,45 @@ static const uint32_t tokeninfo[] ALIGN4 = { + OC_RETURN|Vx, OC_EXIT|Nx, + ST_WHILE, + 0, /* else */ +- OC_B|B_an|P(0x83), OC_B|B_co|P(0x41), OC_B|B_ls|P(0x83), OC_B|B_or|P(0x83), +- OC_B|B_rs|P(0x83), OC_B|B_xo|P(0x83), +- OC_FBLTIN|Sx|F_cl, OC_FBLTIN|Sx|F_sy, OC_FBLTIN|Sx|F_ff, OC_B|B_a2|P(0x83), +- OC_FBLTIN|Nx|F_co, OC_FBLTIN|Nx|F_ex, OC_FBLTIN|Nx|F_in, OC_FBLTIN|Nx|F_lg, +- OC_FBLTIN|F_rn, OC_FBLTIN|Nx|F_si, OC_FBLTIN|Nx|F_sq, OC_FBLTIN|Nx|F_sr, +- OC_B|B_ge|P(0xd6), OC_B|B_gs|P(0xb6), OC_B|B_ix|P(0x9b), /* OC_FBLTIN|Sx|F_le, was here */ +- OC_B|B_ma|P(0x89), OC_B|B_sp|P(0x8b), OC_SPRINTF, OC_B|B_su|P(0xb6), +- OC_B|B_ss|P(0x8f), OC_FBLTIN|F_ti, OC_B|B_ti|P(0x0b), OC_B|B_mt|P(0x0b), +- OC_B|B_lo|P(0x49), OC_B|B_up|P(0x49), +- OC_FBLTIN|Sx|F_le, /* TC_LENGTH */ +- OC_GETLINE|SV|P(0), +- 0, 0, +- 0, +- 0 /* TC_END */ ++// OC_B's are builtins with enforced minimum number of arguments (two upper bits). ++// Highest byte bit pattern: nn s3s2s1 v3v2v1 ++// nn - min. number of args, sN - resolve Nth arg to string, vN - resolve to var ++// OC_F's are builtins with zero or one argument. ++// |Rx| enforces that arg is present for: system, close, cos, sin, exp, int, log, sqrt ++// Check for no args is present in builtins' code (not in this table): rand, systime ++// Have one _optional_ arg: fflush, srand, length ++#define OC_B OC_BUILTIN ++#define OC_F OC_FBLTIN ++#define A1 P(0x40) /*one arg*/ ++#define A2 P(0x80) /*two args*/ ++#define A3 P(0xc0) /*three args*/ ++#define __v P(1) ++#define _vv P(3) ++#define __s__v P(9) ++#define __s_vv P(0x0b) ++#define __svvv P(0x0f) ++#define _ss_vv P(0x1b) ++#define _s_vv_ P(0x16) ++#define ss_vv_ P(0x36) ++ OC_B|B_an|_vv|A2, OC_B|B_co|__v|A1, OC_B|B_ls|_vv|A2, OC_B|B_or|_vv|A2, // and compl lshift or ++ OC_B|B_rs|_vv|A2, OC_B|B_xo|_vv|A2, // rshift xor ++ OC_F|F_cl|Sx|Rx, OC_F|F_sy|Sx|Rx, OC_F|F_ff|Sx, OC_B|B_a2|_vv|A2, // close system fflush atan2 ++ OC_F|F_co|Nx|Rx, OC_F|F_ex|Nx|Rx, OC_F|F_in|Nx|Rx, OC_F|F_lg|Nx|Rx, // cos exp int log ++ OC_F|F_rn, OC_F|F_si|Nx|Rx, OC_F|F_sq|Nx|Rx, OC_F|F_sr|Nx, // rand sin sqrt srand ++ OC_B|B_ge|_s_vv_|A3,OC_B|B_gs|ss_vv_|A2,OC_B|B_ix|_ss_vv|A2, // gensub gsub index /*length was here*/ ++ OC_B|B_ma|__s__v|A2,OC_B|B_sp|__s_vv|A2,OC_SPRINTF, OC_B|B_su|ss_vv_|A2,// match split sprintf sub ++ OC_B|B_ss|__svvv|A2,OC_F|F_ti, OC_B|B_ti|__s_vv, OC_B|B_mt|__s_vv, // substr systime strftime mktime ++ OC_B|B_lo|__s__v|A1,OC_B|B_up|__s__v|A1, // tolower toupper ++ OC_F|F_le|Sx, // length ++ OC_GETLINE|SV, // getline ++ 0, 0, // func function ++ 0, // BEGIN ++ 0 // END ++#undef A1 ++#undef A2 ++#undef A3 ++#undef OC_B ++#undef OC_F + }; + + /* internal variable names and their initial values */ +@@ -488,21 +547,29 @@ struct globals { + chain *seq; + node *break_ptr, *continue_ptr; + rstream *iF; +- xhash *vhash, *ahash, *fdhash, *fnhash; ++ xhash *ahash; /* argument names, used only while parsing function bodies */ ++ xhash *fnhash; /* function names, used only in parsing stage */ ++ xhash *vhash; /* variables and arrays */ ++ //xhash *fdhash; /* file objects, used only in execution stage */ ++ //we are reusing ahash as fdhash, via define (see later) + const char *g_progname; + int g_lineno; + int nfields; + int maxfields; /* used in fsrealloc() only */ + var *Fields; +- nvblock *g_cb; + char *g_pos; +- char *g_buf; ++ char g_saved_ch; + smallint icase; + smallint exiting; + smallint nextrec; + smallint nextfile; + smallint is_f0_split; + smallint t_rollback; ++ ++ /* former statics from various functions */ ++ smallint next_token__concat_inserted; ++ uint32_t next_token__save_tclass; ++ uint32_t next_token__save_info; + }; + struct globals2 { + uint32_t t_info; /* often used */ +@@ -515,32 +582,35 @@ struct globals2 { + /* former statics from various functions */ + char *split_f0__fstrings; + +- uint32_t next_token__save_tclass; +- uint32_t next_token__save_info; +- uint32_t next_token__ltclass; +- smallint next_token__concat_inserted; +- +- smallint next_input_file__files_happen; + rstream next_input_file__rsm; ++ smallint next_input_file__files_happen; ++ ++ smalluint exitcode; + +- var *evaluate__fnargs; + unsigned evaluate__seed; ++ var *evaluate__fnargs; + regex_t evaluate__sreg; + +- var ptest__v; ++ var ptest__tmpvar; ++ var awk_printf__tmpvar; ++ var as_regex__tmpvar; ++ var exit__tmpvar; ++ var main__tmpvar; + + tsplitter exec_builtin__tspl; + + /* biggest and least used members go last */ + tsplitter fsplitter, rsplitter; ++ ++ char g_buf[MAXVARFMT + 1]; + }; + #define G1 (ptr_to_globals[-1]) + #define G (*(struct globals2 *)ptr_to_globals) + /* For debug. nm --size-sort awk.o | grep -vi ' [tr] ' */ +-/*char G1size[sizeof(G1)]; - 0x74 */ +-/*char Gsize[sizeof(G)]; - 0x1c4 */ ++//char G1size[sizeof(G1)]; // 0x70 ++//char Gsize[sizeof(G)]; // 0x2f8 + /* Trying to keep most of members accessible with short offsets: */ +-/*char Gofs_seed[offsetof(struct globals2, evaluate__seed)]; - 0x90 */ ++//char Gofs_seed[offsetof(struct globals2, evaluate__seed)]; // 0x7c + #define t_double (G1.t_double ) + #define beginseq (G1.beginseq ) + #define mainseq (G1.mainseq ) +@@ -549,18 +619,20 @@ struct globals2 { + #define break_ptr (G1.break_ptr ) + #define continue_ptr (G1.continue_ptr) + #define iF (G1.iF ) +-#define vhash (G1.vhash ) + #define ahash (G1.ahash ) +-#define fdhash (G1.fdhash ) + #define fnhash (G1.fnhash ) ++#define vhash (G1.vhash ) ++#define fdhash ahash ++//^^^^^^^^^^^^^^^^^^ ahash is cleared after every function parsing, ++// and ends up empty after parsing phase. Thus, we can simply reuse it ++// for fdhash in execution stage. + #define g_progname (G1.g_progname ) + #define g_lineno (G1.g_lineno ) + #define nfields (G1.nfields ) + #define maxfields (G1.maxfields ) + #define Fields (G1.Fields ) +-#define g_cb (G1.g_cb ) + #define g_pos (G1.g_pos ) +-#define g_buf (G1.g_buf ) ++#define g_saved_ch (G1.g_saved_ch ) + #define icase (G1.icase ) + #define exiting (G1.exiting ) + #define nextrec (G1.nextrec ) +@@ -574,25 +646,13 @@ struct globals2 { + #define intvar (G.intvar ) + #define fsplitter (G.fsplitter ) + #define rsplitter (G.rsplitter ) ++#define g_buf (G.g_buf ) + #define INIT_G() do { \ + SET_PTR_TO_GLOBALS((char*)xzalloc(sizeof(G1)+sizeof(G)) + sizeof(G1)); \ +- G.next_token__ltclass = TC_OPTERM; \ ++ t_tclass = TC_NEWLINE; \ + G.evaluate__seed = 1; \ + } while (0) + +- +-/* function prototypes */ +-static void handle_special(var *); +-static node *parse_expr(uint32_t); +-static void chain_group(void); +-static var *evaluate(node *, var *); +-static rstream *next_input_file(void); +-static int fmt_num(char *, int, const char *, double, int); +-static int awk_exit(int) NORETURN; +- +-/* ---- error handling ---- */ +- +-static const char EMSG_INTERNAL_ERROR[] ALIGN1 = "Internal error"; + static const char EMSG_UNEXP_EOS[] ALIGN1 = "Unexpected end of string"; + static const char EMSG_UNEXP_TOKEN[] ALIGN1 = "Unexpected token"; + static const char EMSG_DIV_BY_ZERO[] ALIGN1 = "Division by zero"; +@@ -604,10 +664,7 @@ static const char EMSG_UNDEF_FUNC[] ALIGN1 = "Call to undefined function"; + static const char EMSG_NO_MATH[] ALIGN1 = "Math support is not compiled in"; + static const char EMSG_NEGATIVE_FIELD[] ALIGN1 = "Access to negative field"; + +-static void zero_out_var(var *vp) +-{ +- memset(vp, 0, sizeof(*vp)); +-} ++static int awk_exit(void) NORETURN; + + static void syntax_error(const char *message) NORETURN; + static void syntax_error(const char *message) +@@ -638,12 +695,40 @@ static xhash *hash_init(void) + return newhash; + } + ++static void hash_clear(xhash *hash) ++{ ++ unsigned i; ++ hash_item *hi, *thi; ++ ++ for (i = 0; i < hash->csize; i++) { ++ hi = hash->items[i]; ++ while (hi) { ++ thi = hi; ++ hi = hi->next; ++//FIXME: this assumes that it's a hash of *variables*: ++ free(thi->data.v.string); ++ free(thi); ++ } ++ hash->items[i] = NULL; ++ } ++ hash->glen = hash->nel = 0; ++} ++ ++#if 0 //UNUSED ++static void hash_free(xhash *hash) ++{ ++ hash_clear(hash); ++ free(hash->items); ++ free(hash); ++} ++#endif ++ + /* find item in hash, return ptr to data, NULL if not found */ +-static void *hash_search(xhash *hash, const char *name) ++static NOINLINE void *hash_search3(xhash *hash, const char *name, unsigned idx) + { + hash_item *hi; + +- hi = hash->items[hashidx(name) % hash->csize]; ++ hi = hash->items[idx % hash->csize]; + while (hi) { + if (strcmp(hi->name, name) == 0) + return &hi->data; +@@ -652,6 +737,11 @@ static void *hash_search(xhash *hash, const char *name) + return NULL; + } + ++static void *hash_search(xhash *hash, const char *name) ++{ ++ return hash_search3(hash, name, hashidx(name)); ++} ++ + /* grow hash if it becomes too big */ + static void hash_rebuild(xhash *hash) + { +@@ -687,16 +777,17 @@ static void *hash_find(xhash *hash, const char *name) + unsigned idx; + int l; + +- hi = hash_search(hash, name); ++ idx = hashidx(name); ++ hi = hash_search3(hash, name, idx); + if (!hi) { +- if (++hash->nel / hash->csize > 10) ++ if (++hash->nel > hash->csize * 8) + hash_rebuild(hash); + + l = strlen(name) + 1; + hi = xzalloc(sizeof(*hi) + l); + strcpy(hi->name, name); + +- idx = hashidx(name) % hash->csize; ++ idx = idx % hash->csize; + hi->next = hash->items[idx]; + hash->items[idx] = hi; + hash->glen += l; +@@ -731,7 +822,7 @@ static void hash_remove(xhash *hash, const char *name) + + static char *skip_spaces(char *p) + { +- while (1) { ++ for (;;) { + if (*p == '\\' && p[1] == '\n') { + p++; + t_lineno++; +@@ -747,8 +838,10 @@ static char *skip_spaces(char *p) + static char *nextword(char **s) + { + char *p = *s; +- while (*(*s)++ != '\0') ++ char *q = p; ++ while (*q++ != '\0') + continue; ++ *s = q; + return p; + } + +@@ -811,10 +904,27 @@ static double my_strtod(char **pp) + + /* -------- working with variables (set/get/copy/etc) -------- */ + +-static xhash *iamarray(var *v) ++static void fmt_num(const char *format, double n) + { +- var *a = v; ++ if (n == (long long)n) { ++ snprintf(g_buf, MAXVARFMT, "%lld", (long long)n); ++ } else { ++ const char *s = format; ++ char c; ++ ++ do { c = *s; } while (c && *++s); ++ if (strchr("diouxX", c)) { ++ snprintf(g_buf, MAXVARFMT, format, (int)n); ++ } else if (strchr("eEfFgGaA", c)) { ++ snprintf(g_buf, MAXVARFMT, format, n); ++ } else { ++ syntax_error(EMSG_INV_FMT); ++ } ++ } ++} + ++static xhash *iamarray(var *a) ++{ + while (a->type & VF_CHILD) + a = a->x.parent; + +@@ -825,23 +935,7 @@ static xhash *iamarray(var *v) + return a->x.array; + } + +-static void clear_array(xhash *array) +-{ +- unsigned i; +- hash_item *hi, *thi; +- +- for (i = 0; i < array->csize; i++) { +- hi = array->items[i]; +- while (hi) { +- thi = hi; +- hi = hi->next; +- free(thi->data.v.string); +- free(thi); +- } +- array->items[i] = NULL; +- } +- array->glen = array->nel = 0; +-} ++#define clear_array(array) hash_clear(array) + + /* clear a variable */ + static var *clrvar(var *v) +@@ -855,6 +949,8 @@ static var *clrvar(var *v) + return v; + } + ++static void handle_special(var *); ++ + /* assign string value to variable */ + static var *setvar_p(var *v, char *value) + { +@@ -901,7 +997,7 @@ static const char *getvar_s(var *v) + { + /* if v is numeric and has no cached string, convert it to string */ + if ((v->type & (VF_NUMBER | VF_CACHED)) == VF_NUMBER) { +- fmt_num(g_buf, MAXVARFMT, getvar_s(intvar[CONVFMT]), v->number, TRUE); ++ fmt_num(getvar_s(intvar[CONVFMT]), v->number); + v->string = xstrdup(g_buf); + v->type |= VF_CACHED; + } +@@ -920,6 +1016,7 @@ static double getvar_i(var *v) + v->number = my_strtod(&s); + debug_printf_eval("%f (s:'%s')\n", v->number, s); + if (v->type & VF_USER) { ++//TODO: skip_spaces() also skips backslash+newline, is it intended here? + s = skip_spaces(s); + if (*s != '\0') + v->type &= ~VF_USER; +@@ -981,94 +1078,28 @@ static int istrue(var *v) + return (v->string && v->string[0]); + } + +-/* temporary variables allocator. Last allocated should be first freed */ +-static var *nvalloc(int n) +-{ +- nvblock *pb = NULL; +- var *v, *r; +- int size; +- +- while (g_cb) { +- pb = g_cb; +- if ((g_cb->pos - g_cb->nv) + n <= g_cb->size) +- break; +- g_cb = g_cb->next; +- } +- +- if (!g_cb) { +- size = (n <= MINNVBLOCK) ? MINNVBLOCK : n; +- g_cb = xzalloc(sizeof(nvblock) + size * sizeof(var)); +- g_cb->size = size; +- g_cb->pos = g_cb->nv; +- g_cb->prev = pb; +- /*g_cb->next = NULL; - xzalloc did it */ +- if (pb) +- pb->next = g_cb; +- } +- +- v = r = g_cb->pos; +- g_cb->pos += n; +- +- while (v < g_cb->pos) { +- v->type = 0; +- v->string = NULL; +- v++; +- } +- +- return r; +-} +- +-static void nvfree(var *v) +-{ +- var *p; +- +- if (v < g_cb->nv || v >= g_cb->pos) +- syntax_error(EMSG_INTERNAL_ERROR); +- +- for (p = v; p < g_cb->pos; p++) { +- if ((p->type & (VF_ARRAY | VF_CHILD)) == VF_ARRAY) { +- clear_array(iamarray(p)); +- free(p->x.array->items); +- free(p->x.array); +- } +- if (p->type & VF_WALK) { +- walker_list *n; +- walker_list *w = p->x.walker; +- debug_printf_walker("nvfree: freeing walker @%p\n", &p->x.walker); +- p->x.walker = NULL; +- while (w) { +- n = w->prev; +- debug_printf_walker(" free(%p)\n", w); +- free(w); +- w = n; +- } +- } +- clrvar(p); +- } +- +- g_cb->pos = v; +- while (g_cb->prev && g_cb->pos == g_cb->nv) { +- g_cb = g_cb->prev; +- } +-} +- + /* ------- awk program text parsing ------- */ + +-/* Parse next token pointed by global pos, place results into global ttt. +- * If token isn't expected, give away. Return token class ++/* Parse next token pointed by global pos, place results into global t_XYZ variables. ++ * If token isn't expected, print error message and die. ++ * Return token class (also store it in t_tclass). + */ + static uint32_t next_token(uint32_t expected) + { +-#define concat_inserted (G.next_token__concat_inserted) +-#define save_tclass (G.next_token__save_tclass) +-#define save_info (G.next_token__save_info) +-/* Initialized to TC_OPTERM: */ +-#define ltclass (G.next_token__ltclass) ++#define concat_inserted (G1.next_token__concat_inserted) ++#define save_tclass (G1.next_token__save_tclass) ++#define save_info (G1.next_token__save_info) + +- char *p, *s; ++ char *p; + const char *tl; +- uint32_t tc; + const uint32_t *ti; ++ uint32_t tc, last_token_class; ++ ++ last_token_class = t_tclass; /* t_tclass is initialized to TC_NEWLINE */ ++ ++ debug_printf_parse("%s() expected(%x):", __func__, expected); ++ debug_parse_print_tc(expected); ++ debug_printf_parse("\n"); + + if (t_rollback) { + debug_printf_parse("%s: using rolled-back token\n", __func__); +@@ -1080,6 +1111,10 @@ static uint32_t next_token(uint32_t expected) + t_info = save_info; + } else { + p = g_pos; ++ if (g_saved_ch != '\0') { ++ *p = g_saved_ch; ++ g_saved_ch = '\0'; ++ } + readnext: + p = skip_spaces(p); + g_lineno = t_lineno; +@@ -1087,15 +1122,12 @@ static uint32_t next_token(uint32_t expected) + while (*p != '\n' && *p != '\0') + p++; + +- if (*p == '\n') +- t_lineno++; +- + if (*p == '\0') { + tc = TC_EOF; + debug_printf_parse("%s: token found: TC_EOF\n", __func__); + } else if (*p == '\"') { + /* it's a string */ +- t_string = s = ++p; ++ char *s = t_string = ++p; + while (*p != '\"') { + char *pp; + if (*p == '\0' || *p == '\n') +@@ -1110,7 +1142,7 @@ static uint32_t next_token(uint32_t expected) + debug_printf_parse("%s: token found:'%s' TC_STRING\n", __func__, t_string); + } else if ((expected & TC_REGEXP) && *p == '/') { + /* it's regexp */ +- t_string = s = ++p; ++ char *s = t_string = ++p; + while (*p != '/') { + if (*p == '\0' || *p == '\n') + syntax_error(EMSG_UNEXP_EOS); +@@ -1141,6 +1173,11 @@ static uint32_t next_token(uint32_t expected) + tc = TC_NUMBER; + debug_printf_parse("%s: token found:%f TC_NUMBER\n", __func__, t_double); + } else { ++ char *end_of_name; ++ ++ if (*p == '\n') ++ t_lineno++; ++ + /* search for something known */ + tl = tokenlist; + tc = 0x00000001; +@@ -1155,9 +1192,9 @@ static uint32_t next_token(uint32_t expected) + * token matches, + * and it's not a longer word, + */ +- if ((tc & (expected | TC_WORD | TC_NEWLINE)) ++ if ((tc & (expected | TS_WORD | TC_NEWLINE)) + && strncmp(p, tl, l) == 0 +- && !((tc & TC_WORD) && isalnum_(p[l])) ++ && !((tc & TS_WORD) && isalnum_(p[l])) + ) { + /* then this is what we are looking for */ + t_info = *ti; +@@ -1174,67 +1211,94 @@ static uint32_t next_token(uint32_t expected) + if (!isalnum_(*p)) + syntax_error(EMSG_UNEXP_TOKEN); /* no */ + /* yes */ +- t_string = --p; +- while (isalnum_(*++p)) { +- p[-1] = *p; +- } +- p[-1] = '\0'; +- tc = TC_VARIABLE; +- /* also consume whitespace between functionname and bracket */ +- if (!(expected & TC_VARIABLE) || (expected & TC_ARRAY)) ++ t_string = p; ++ while (isalnum_(*p)) ++ p++; ++ end_of_name = p; ++ ++ if (last_token_class == TC_FUNCDECL) ++ /* eat space in "function FUNC (...) {...}" declaration */ + p = skip_spaces(p); ++ else if (expected & TC_ARRAY) { ++ /* eat space between array name and [ */ ++ char *s = skip_spaces(p); ++ if (*s == '[') /* array ref, not just a name? */ ++ p = s; ++ } ++ /* else: do NOT consume whitespace after variable name! ++ * gawk allows definition "function FUNC (p) {...}" - note space, ++ * but disallows the call "FUNC (p)" because it isn't one - ++ * expression "v (a)" should NOT be parsed as TC_FUNCTION: ++ * it is a valid concatenation if "v" is a variable, ++ * not a function name (and type of name is not known at parse time). ++ */ ++ + if (*p == '(') { ++ p++; + tc = TC_FUNCTION; + debug_printf_parse("%s: token found:'%s' TC_FUNCTION\n", __func__, t_string); ++ } else if (*p == '[') { ++ p++; ++ tc = TC_ARRAY; ++ debug_printf_parse("%s: token found:'%s' TC_ARRAY\n", __func__, t_string); + } else { +- if (*p == '[') { +- p++; +- tc = TC_ARRAY; +- debug_printf_parse("%s: token found:'%s' TC_ARRAY\n", __func__, t_string); +- } else +- debug_printf_parse("%s: token found:'%s' TC_VARIABLE\n", __func__, t_string); ++ tc = TC_VARIABLE; ++ debug_printf_parse("%s: token found:'%s' TC_VARIABLE\n", __func__, t_string); ++ if (end_of_name == p) { ++ /* there is no space for trailing NUL in t_string! ++ * We need to save the char we are going to NUL. ++ * (we'll use it in future call to next_token()) ++ */ ++ g_saved_ch = *end_of_name; ++// especially pathological example is V="abc"; V.2 - it's V concatenated to .2 ++// (it evaluates to "abc0.2"). Because of this case, we can't simply cache ++// '.' and analyze it later: we also have to *store it back* in next ++// next_token(), in order to give my_strtod() the undamaged ".2" string. ++ } + } ++ *end_of_name = '\0'; /* terminate t_string */ + } + token_found: + g_pos = p; + + /* skipping newlines in some cases */ +- if ((ltclass & TC_NOTERM) && (tc & TC_NEWLINE)) ++ if ((last_token_class & TS_NOTERM) && (tc & TC_NEWLINE)) + goto readnext; + + /* insert concatenation operator when needed */ +- debug_printf_parse("%s: %x %x %x concat_inserted?\n", __func__, +- (ltclass & TC_CONCAT1), (tc & TC_CONCAT2), (expected & TC_BINOP)); +- if ((ltclass & TC_CONCAT1) && (tc & TC_CONCAT2) && (expected & TC_BINOP) +- && !(ltclass == TC_LENGTH && tc == TC_SEQSTART) /* but not for "length(..." */ ++ debug_printf_parse("%s: concat_inserted if all nonzero: %x %x %x %x\n", __func__, ++ (last_token_class & TS_CONCAT_L), (tc & TS_CONCAT_R), (expected & TS_BINOP), ++ !(last_token_class == TC_LENGTH && tc == TC_LPAREN)); ++ if ((last_token_class & TS_CONCAT_L) && (tc & TS_CONCAT_R) && (expected & TS_BINOP) ++ && !(last_token_class == TC_LENGTH && tc == TC_LPAREN) /* but not for "length(..." */ + ) { + concat_inserted = TRUE; + save_tclass = tc; + save_info = t_info; +- tc = TC_BINOP; ++ tc = TC_BINOPX; + t_info = OC_CONCAT | SS | P(35); + } + +- debug_printf_parse("%s: t_tclass=tc=%x\n", __func__, t_tclass); + t_tclass = tc; ++ debug_printf_parse("%s: t_tclass=tc=%x\n", __func__, tc); + } +- ltclass = t_tclass; +- + /* Are we ready for this? */ +- if (!(ltclass & expected)) { +- syntax_error((ltclass & (TC_NEWLINE | TC_EOF)) ? ++ if (!(t_tclass & expected)) { ++ syntax_error((last_token_class & (TC_NEWLINE | TC_EOF)) ? + EMSG_UNEXP_EOS : EMSG_UNEXP_TOKEN); + } + +- debug_printf_parse("%s: returning, ltclass:%x t_double:%f\n", __func__, ltclass, t_double); +- return ltclass; ++ debug_printf_parse("%s: returning, t_double:%f t_tclass:", __func__, t_double); ++ debug_parse_print_tc(t_tclass); ++ debug_printf_parse("\n"); ++ ++ return t_tclass; + #undef concat_inserted + #undef save_tclass + #undef save_info +-#undef ltclass + } + +-static void rollback_token(void) ++static ALWAYS_INLINE void rollback_token(void) + { + t_rollback = TRUE; + } +@@ -1251,169 +1315,188 @@ static node *new_node(uint32_t info) + + static void mk_re_node(const char *s, node *n, regex_t *re) + { +- n->info = OC_REGEXP; ++ n->info = TI_REGEXP; + n->l.re = re; + n->r.ire = re + 1; + xregcomp(re, s, REG_EXTENDED); + xregcomp(re + 1, s, REG_EXTENDED | REG_ICASE); + } + +-static node *condition(void) ++static node *parse_expr(uint32_t); ++ ++static node *parse_lrparen_list(void) + { +- next_token(TC_SEQSTART); +- return parse_expr(TC_SEQTERM); ++ next_token(TC_LPAREN); ++ return parse_expr(TC_RPAREN); + } + + /* parse expression terminated by given argument, return ptr + * to built subtree. Terminator is eaten by parse_expr */ +-static node *parse_expr(uint32_t iexp) ++static node *parse_expr(uint32_t term_tc) + { + node sn; + node *cn = &sn; + node *vn, *glptr; +- uint32_t tc, xtc; ++ uint32_t tc, expected_tc; + var *v; + +- debug_printf_parse("%s(%x)\n", __func__, iexp); ++ debug_printf_parse("%s() term_tc(%x):", __func__, term_tc); ++ debug_parse_print_tc(term_tc); ++ debug_printf_parse("\n"); + + sn.info = PRIMASK; + sn.r.n = sn.a.n = glptr = NULL; +- xtc = TC_OPERAND | TC_UOPPRE | TC_REGEXP | iexp; ++ expected_tc = TS_OPERAND | TS_UOPPRE | TC_REGEXP | term_tc; + +- while (!((tc = next_token(xtc)) & iexp)) { ++ while (!((tc = next_token(expected_tc)) & term_tc)) { + +- if (glptr && (t_info == (OC_COMPARE | VV | P(39) | 2))) { ++ if (glptr && (t_info == TI_LESS)) { + /* input redirection (<) attached to glptr node */ + debug_printf_parse("%s: input redir\n", __func__); + cn = glptr->l.n = new_node(OC_CONCAT | SS | P(37)); + cn->a.n = glptr; +- xtc = TC_OPERAND | TC_UOPPRE; ++ expected_tc = TS_OPERAND | TS_UOPPRE; + glptr = NULL; +- +- } else if (tc & (TC_BINOP | TC_UOPPOST)) { +- debug_printf_parse("%s: TC_BINOP | TC_UOPPOST tc:%x\n", __func__, tc); ++ continue; ++ } ++ if (tc & (TS_BINOP | TC_UOPPOST)) { ++ debug_printf_parse("%s: TS_BINOP | TC_UOPPOST tc:%x\n", __func__, tc); + /* for binary and postfix-unary operators, jump back over + * previous operators with higher priority */ + vn = cn; + while (((t_info & PRIMASK) > (vn->a.n->info & PRIMASK2)) +- || ((t_info == vn->info) && ((t_info & OPCLSMASK) == OC_COLON)) ++ || ((t_info == vn->info) && t_info == TI_COLON) + ) { + vn = vn->a.n; + if (!vn->a.n) syntax_error(EMSG_UNEXP_TOKEN); + } +- if ((t_info & OPCLSMASK) == OC_TERNARY) ++ if (t_info == TI_TERNARY) ++//TODO: why? + t_info += P(6); + cn = vn->a.n->r.n = new_node(t_info); + cn->a.n = vn->a.n; +- if (tc & TC_BINOP) { ++ if (tc & TS_BINOP) { + cn->l.n = vn; +- xtc = TC_OPERAND | TC_UOPPRE | TC_REGEXP; +- if ((t_info & OPCLSMASK) == OC_PGETLINE) { ++//FIXME: this is the place to detect and reject assignments to non-lvalues. ++//Currently we allow "assignments" to consts and temporaries, nonsense like this: ++// awk 'BEGIN { "qwe" = 1 }' ++// awk 'BEGIN { 7 *= 7 }' ++// awk 'BEGIN { length("qwe") = 1 }' ++// awk 'BEGIN { (1+1) += 3 }' ++ expected_tc = TS_OPERAND | TS_UOPPRE | TC_REGEXP; ++ if (t_info == TI_PGETLINE) { + /* it's a pipe */ + next_token(TC_GETLINE); + /* give maximum priority to this pipe */ + cn->info &= ~PRIMASK; +- xtc = TC_OPERAND | TC_UOPPRE | TC_BINOP | iexp; ++ expected_tc = TS_OPERAND | TS_UOPPRE | TS_BINOP | term_tc; + } + } else { + cn->r.n = vn; +- xtc = TC_OPERAND | TC_UOPPRE | TC_BINOP | iexp; ++ expected_tc = TS_OPERAND | TS_UOPPRE | TS_BINOP | term_tc; + } + vn->a.n = cn; ++ continue; ++ } + +- } else { +- debug_printf_parse("%s: other\n", __func__); +- /* for operands and prefix-unary operators, attach them +- * to last node */ +- vn = cn; +- cn = vn->r.n = new_node(t_info); +- cn->a.n = vn; +- xtc = TC_OPERAND | TC_UOPPRE | TC_REGEXP; +- if (tc & (TC_OPERAND | TC_REGEXP)) { +- debug_printf_parse("%s: TC_OPERAND | TC_REGEXP\n", __func__); +- xtc = TC_UOPPRE | TC_UOPPOST | TC_BINOP | TC_OPERAND | iexp; +- /* one should be very careful with switch on tclass - +- * only simple tclasses should be used! */ +- switch (tc) { +- case TC_VARIABLE: +- case TC_ARRAY: +- debug_printf_parse("%s: TC_VARIABLE | TC_ARRAY\n", __func__); +- cn->info = OC_VAR; +- v = hash_search(ahash, t_string); +- if (v != NULL) { +- cn->info = OC_FNARG; +- cn->l.aidx = v->x.aidx; +- } else { +- cn->l.v = newvar(t_string); +- } +- if (tc & TC_ARRAY) { +- cn->info |= xS; +- cn->r.n = parse_expr(TC_ARRTERM); +- } +- break; ++ debug_printf_parse("%s: other, t_info:%x\n", __func__, t_info); ++ /* for operands and prefix-unary operators, attach them ++ * to last node */ ++ vn = cn; ++ cn = vn->r.n = new_node(t_info); ++ cn->a.n = vn; + +- case TC_NUMBER: +- case TC_STRING: +- debug_printf_parse("%s: TC_NUMBER | TC_STRING\n", __func__); +- cn->info = OC_VAR; +- v = cn->l.v = xzalloc(sizeof(var)); +- if (tc & TC_NUMBER) +- setvar_i(v, t_double); +- else { +- setvar_s(v, t_string); +- xtc &= ~TC_UOPPOST; /* "str"++ is not allowed */ +- } +- break; ++ expected_tc = TS_OPERAND | TS_UOPPRE | TC_REGEXP; ++ if (t_info == TI_PREINC || t_info == TI_PREDEC) ++ expected_tc = TS_LVALUE | TC_UOPPRE1; + +- case TC_REGEXP: +- debug_printf_parse("%s: TC_REGEXP\n", __func__); +- mk_re_node(t_string, cn, xzalloc(sizeof(regex_t)*2)); +- break; ++ if (!(tc & (TS_OPERAND | TC_REGEXP))) ++ continue; + +- case TC_FUNCTION: +- debug_printf_parse("%s: TC_FUNCTION\n", __func__); +- cn->info = OC_FUNC; +- cn->r.f = newfunc(t_string); +- cn->l.n = condition(); +- break; ++ debug_printf_parse("%s: TS_OPERAND | TC_REGEXP\n", __func__); ++ expected_tc = TS_UOPPRE | TC_UOPPOST | TS_BINOP | TS_OPERAND | term_tc; ++ /* one should be very careful with switch on tclass - ++ * only simple tclasses should be used (TC_xyz, not TS_xyz) */ ++ switch (tc) { ++ case TC_VARIABLE: ++ case TC_ARRAY: ++ debug_printf_parse("%s: TC_VARIABLE | TC_ARRAY\n", __func__); ++ cn->info = OC_VAR; ++ v = hash_search(ahash, t_string); ++ if (v != NULL) { ++ cn->info = OC_FNARG; ++ cn->l.aidx = v->x.aidx; ++ } else { ++ cn->l.v = newvar(t_string); ++ } ++ if (tc & TC_ARRAY) { ++ cn->info |= xS; ++ cn->r.n = parse_expr(TC_ARRTERM); ++ } ++ break; + +- case TC_SEQSTART: +- debug_printf_parse("%s: TC_SEQSTART\n", __func__); +- cn = vn->r.n = parse_expr(TC_SEQTERM); +- if (!cn) +- syntax_error("Empty sequence"); +- cn->a.n = vn; +- break; ++ case TC_NUMBER: ++ case TC_STRING: ++ debug_printf_parse("%s: TC_NUMBER | TC_STRING\n", __func__); ++ cn->info = OC_VAR; ++ v = cn->l.v = xzalloc(sizeof(var)); ++ if (tc & TC_NUMBER) ++ setvar_i(v, t_double); ++ else { ++ setvar_s(v, t_string); ++ expected_tc &= ~TC_UOPPOST; /* "str"++ is not allowed */ ++ } ++ break; + +- case TC_GETLINE: +- debug_printf_parse("%s: TC_GETLINE\n", __func__); +- glptr = cn; +- xtc = TC_OPERAND | TC_UOPPRE | TC_BINOP | iexp; +- break; ++ case TC_REGEXP: ++ debug_printf_parse("%s: TC_REGEXP\n", __func__); ++ mk_re_node(t_string, cn, xzalloc(sizeof(regex_t)*2)); ++ break; + +- case TC_BUILTIN: +- debug_printf_parse("%s: TC_BUILTIN\n", __func__); +- cn->l.n = condition(); +- break; ++ case TC_FUNCTION: ++ debug_printf_parse("%s: TC_FUNCTION\n", __func__); ++ cn->info = OC_FUNC; ++ cn->r.f = newfunc(t_string); ++ cn->l.n = parse_expr(TC_RPAREN); ++ break; + +- case TC_LENGTH: +- debug_printf_parse("%s: TC_LENGTH\n", __func__); +- next_token(TC_SEQSTART /* length(...) */ +- | TC_OPTERM /* length; (or newline)*/ +- | TC_GRPTERM /* length } */ +- | TC_BINOPX /* length NUM */ +- | TC_COMMA /* print length, 1 */ +- ); +- rollback_token(); +- if (t_tclass & TC_SEQSTART) { +- /* It was a "(" token. Handle just like TC_BUILTIN */ +- cn->l.n = condition(); +- } +- break; +- } ++ case TC_LPAREN: ++ debug_printf_parse("%s: TC_LPAREN\n", __func__); ++ cn = vn->r.n = parse_expr(TC_RPAREN); ++ if (!cn) ++ syntax_error("Empty sequence"); ++ cn->a.n = vn; ++ break; ++ ++ case TC_GETLINE: ++ debug_printf_parse("%s: TC_GETLINE\n", __func__); ++ glptr = cn; ++ expected_tc = TS_OPERAND | TS_UOPPRE | TS_BINOP | term_tc; ++ break; ++ ++ case TC_BUILTIN: ++ debug_printf_parse("%s: TC_BUILTIN\n", __func__); ++ cn->l.n = parse_lrparen_list(); ++ break; ++ ++ case TC_LENGTH: ++ debug_printf_parse("%s: TC_LENGTH\n", __func__); ++ tc = next_token(TC_LPAREN /* length(...) */ ++ | TC_SEMICOL /* length; */ ++ | TC_NEWLINE /* length */ ++ | TC_RBRACE /* length } */ ++ | TC_BINOPX /* length NUM */ ++ | TC_COMMA /* print length, 1 */ ++ ); ++ if (tc != TC_LPAREN) ++ rollback_token(); ++ else { ++ /* It was a "(" token. Handle just like TC_BUILTIN */ ++ cn->l.n = parse_expr(TC_RPAREN); + } ++ break; + } +- } ++ } /* while() */ + + debug_printf_parse("%s() returns %p\n", __func__, sn.r.n); + return sn.r.n; +@@ -1430,7 +1513,7 @@ static node *chain_node(uint32_t info) + if (seq->programname != g_progname) { + seq->programname = g_progname; + n = chain_node(OC_NEWSOURCE); +- n->l.new_progname = xstrdup(g_progname); ++ n->l.new_progname = g_progname; + } + + n = seq->last; +@@ -1446,14 +1529,16 @@ static void chain_expr(uint32_t info) + + n = chain_node(info); + +- n->l.n = parse_expr(TC_OPTERM | TC_GRPTERM); ++ n->l.n = parse_expr(TC_SEMICOL | TC_NEWLINE | TC_RBRACE); + if ((info & OF_REQUIRED) && !n->l.n) + syntax_error(EMSG_TOO_FEW_ARGS); + +- if (t_tclass & TC_GRPTERM) ++ if (t_tclass & TC_RBRACE) + rollback_token(); + } + ++static void chain_group(void); ++ + static node *chain_loop(node *nn) + { + node *n, *n2, *save_brk, *save_cont; +@@ -1477,207 +1562,284 @@ static node *chain_loop(node *nn) + return n; + } + ++static void chain_until_rbrace(void) ++{ ++ uint32_t tc; ++ while ((tc = next_token(TS_GRPSEQ | TC_RBRACE)) != TC_RBRACE) { ++ debug_printf_parse("%s: !TC_RBRACE\n", __func__); ++ if (tc == TC_NEWLINE) ++ continue; ++ rollback_token(); ++ chain_group(); ++ } ++ debug_printf_parse("%s: TC_RBRACE\n", __func__); ++} ++ + /* parse group and attach it to chain */ + static void chain_group(void) + { +- uint32_t c; ++ uint32_t tc; + node *n, *n2, *n3; + + do { +- c = next_token(TC_GRPSEQ); +- } while (c & TC_NEWLINE); +- +- if (c & TC_GRPSTART) { +- debug_printf_parse("%s: TC_GRPSTART\n", __func__); +- while (next_token(TC_GRPSEQ | TC_GRPTERM) != TC_GRPTERM) { +- debug_printf_parse("%s: !TC_GRPTERM\n", __func__); +- if (t_tclass & TC_NEWLINE) +- continue; +- rollback_token(); +- chain_group(); +- } +- debug_printf_parse("%s: TC_GRPTERM\n", __func__); +- } else if (c & (TC_OPSEQ | TC_OPTERM)) { +- debug_printf_parse("%s: TC_OPSEQ | TC_OPTERM\n", __func__); ++ tc = next_token(TS_GRPSEQ); ++ } while (tc == TC_NEWLINE); ++ ++ if (tc == TC_LBRACE) { ++ debug_printf_parse("%s: TC_LBRACE\n", __func__); ++ chain_until_rbrace(); ++ return; ++ } ++ if (tc & (TS_OPSEQ | TC_SEMICOL)) { ++ debug_printf_parse("%s: TS_OPSEQ | TC_SEMICOL\n", __func__); + rollback_token(); + chain_expr(OC_EXEC | Vx); +- } else { +- /* TC_STATEMNT */ +- debug_printf_parse("%s: TC_STATEMNT(?)\n", __func__); +- switch (t_info & OPCLSMASK) { +- case ST_IF: +- debug_printf_parse("%s: ST_IF\n", __func__); +- n = chain_node(OC_BR | Vx); +- n->l.n = condition(); ++ return; ++ } ++ ++ /* TS_STATEMNT */ ++ debug_printf_parse("%s: TS_STATEMNT(?)\n", __func__); ++ switch (t_info & OPCLSMASK) { ++ case ST_IF: ++ debug_printf_parse("%s: ST_IF\n", __func__); ++ n = chain_node(OC_BR | Vx); ++ n->l.n = parse_lrparen_list(); ++ chain_group(); ++ n2 = chain_node(OC_EXEC); ++ n->r.n = seq->last; ++ if (next_token(TS_GRPSEQ | TC_RBRACE | TC_ELSE) == TC_ELSE) { + chain_group(); +- n2 = chain_node(OC_EXEC); +- n->r.n = seq->last; +- if (next_token(TC_GRPSEQ | TC_GRPTERM | TC_ELSE) == TC_ELSE) { +- chain_group(); +- n2->a.n = seq->last; +- } else { +- rollback_token(); +- } +- break; ++ n2->a.n = seq->last; ++ } else { ++ rollback_token(); ++ } ++ break; + +- case ST_WHILE: +- debug_printf_parse("%s: ST_WHILE\n", __func__); +- n2 = condition(); +- n = chain_loop(NULL); +- n->l.n = n2; +- break; ++ case ST_WHILE: ++ debug_printf_parse("%s: ST_WHILE\n", __func__); ++ n2 = parse_lrparen_list(); ++ n = chain_loop(NULL); ++ n->l.n = n2; ++ break; + +- case ST_DO: +- debug_printf_parse("%s: ST_DO\n", __func__); +- n2 = chain_node(OC_EXEC); +- n = chain_loop(NULL); +- n2->a.n = n->a.n; +- next_token(TC_WHILE); +- n->l.n = condition(); +- break; ++ case ST_DO: ++ debug_printf_parse("%s: ST_DO\n", __func__); ++ n2 = chain_node(OC_EXEC); ++ n = chain_loop(NULL); ++ n2->a.n = n->a.n; ++ next_token(TC_WHILE); ++ n->l.n = parse_lrparen_list(); ++ break; + +- case ST_FOR: +- debug_printf_parse("%s: ST_FOR\n", __func__); +- next_token(TC_SEQSTART); +- n2 = parse_expr(TC_SEMICOL | TC_SEQTERM); +- if (t_tclass & TC_SEQTERM) { /* for-in */ +- if (!n2 || (n2->info & OPCLSMASK) != OC_IN) +- syntax_error(EMSG_UNEXP_TOKEN); +- n = chain_node(OC_WALKINIT | VV); +- n->l.n = n2->l.n; +- n->r.n = n2->r.n; +- n = chain_loop(NULL); +- n->info = OC_WALKNEXT | Vx; +- n->l.n = n2->l.n; +- } else { /* for (;;) */ +- n = chain_node(OC_EXEC | Vx); +- n->l.n = n2; +- n2 = parse_expr(TC_SEMICOL); +- n3 = parse_expr(TC_SEQTERM); +- n = chain_loop(n3); +- n->l.n = n2; +- if (!n2) +- n->info = OC_EXEC; +- } +- break; ++ case ST_FOR: ++ debug_printf_parse("%s: ST_FOR\n", __func__); ++ next_token(TC_LPAREN); ++ n2 = parse_expr(TC_SEMICOL | TC_RPAREN); ++ if (t_tclass & TC_RPAREN) { /* for (I in ARRAY) */ ++ if (!n2 || n2->info != TI_IN) ++ syntax_error(EMSG_UNEXP_TOKEN); ++ n = chain_node(OC_WALKINIT | VV); ++ n->l.n = n2->l.n; ++ n->r.n = n2->r.n; ++ n = chain_loop(NULL); ++ n->info = OC_WALKNEXT | Vx; ++ n->l.n = n2->l.n; ++ } else { /* for (;;) */ ++ n = chain_node(OC_EXEC | Vx); ++ n->l.n = n2; ++ n2 = parse_expr(TC_SEMICOL); ++ n3 = parse_expr(TC_RPAREN); ++ n = chain_loop(n3); ++ n->l.n = n2; ++ if (!n2) ++ n->info = OC_EXEC; ++ } ++ break; + +- case OC_PRINT: +- case OC_PRINTF: +- debug_printf_parse("%s: OC_PRINT[F]\n", __func__); +- n = chain_node(t_info); +- n->l.n = parse_expr(TC_OPTERM | TC_OUTRDR | TC_GRPTERM); +- if (t_tclass & TC_OUTRDR) { +- n->info |= t_info; +- n->r.n = parse_expr(TC_OPTERM | TC_GRPTERM); +- } +- if (t_tclass & TC_GRPTERM) +- rollback_token(); +- break; ++ case OC_PRINT: ++ case OC_PRINTF: ++ debug_printf_parse("%s: OC_PRINT[F]\n", __func__); ++ n = chain_node(t_info); ++ n->l.n = parse_expr(TC_SEMICOL | TC_NEWLINE | TC_OUTRDR | TC_RBRACE); ++ if (t_tclass & TC_OUTRDR) { ++ n->info |= t_info; ++ n->r.n = parse_expr(TC_SEMICOL | TC_NEWLINE | TC_RBRACE); ++ } ++ if (t_tclass & TC_RBRACE) ++ rollback_token(); ++ break; + +- case OC_BREAK: +- debug_printf_parse("%s: OC_BREAK\n", __func__); +- n = chain_node(OC_EXEC); +- n->a.n = break_ptr; +- chain_expr(t_info); +- break; ++ case OC_BREAK: ++ debug_printf_parse("%s: OC_BREAK\n", __func__); ++ n = chain_node(OC_EXEC); ++ if (!break_ptr) ++ syntax_error("'break' not in a loop"); ++ n->a.n = break_ptr; ++ chain_expr(t_info); ++ break; + +- case OC_CONTINUE: +- debug_printf_parse("%s: OC_CONTINUE\n", __func__); +- n = chain_node(OC_EXEC); +- n->a.n = continue_ptr; +- chain_expr(t_info); +- break; ++ case OC_CONTINUE: ++ debug_printf_parse("%s: OC_CONTINUE\n", __func__); ++ n = chain_node(OC_EXEC); ++ if (!continue_ptr) ++ syntax_error("'continue' not in a loop"); ++ n->a.n = continue_ptr; ++ chain_expr(t_info); ++ break; + +- /* delete, next, nextfile, return, exit */ +- default: +- debug_printf_parse("%s: default\n", __func__); +- chain_expr(t_info); +- } ++ /* delete, next, nextfile, return, exit */ ++ default: ++ debug_printf_parse("%s: default\n", __func__); ++ chain_expr(t_info); + } + } + + static void parse_program(char *p) + { +- uint32_t tclass; +- node *cn; +- func *f; +- var *v; ++ debug_printf_parse("%s()\n", __func__); + + g_pos = p; + t_lineno = 1; +- while ((tclass = next_token(TC_EOF | TC_OPSEQ | TC_GRPSTART | +- TC_OPTERM | TC_BEGIN | TC_END | TC_FUNCDECL)) != TC_EOF) { ++ for (;;) { ++ uint32_t tclass; + +- if (tclass & TC_OPTERM) { +- debug_printf_parse("%s: TC_OPTERM\n", __func__); ++ tclass = next_token(TS_OPSEQ | TC_LBRACE | TC_BEGIN | TC_END | TC_FUNCDECL ++ | TC_EOF | TC_NEWLINE /* but not TC_SEMICOL */); ++ got_tok: ++ if (tclass == TC_EOF) { ++ debug_printf_parse("%s: TC_EOF\n", __func__); ++ break; ++ } ++ if (tclass == TC_NEWLINE) { ++ debug_printf_parse("%s: TC_NEWLINE\n", __func__); + continue; + } +- +- seq = &mainseq; +- if (tclass & TC_BEGIN) { ++ if (tclass == TC_BEGIN) { + debug_printf_parse("%s: TC_BEGIN\n", __func__); + seq = &beginseq; +- chain_group(); +- } else if (tclass & TC_END) { ++ /* ensure there is no newline between BEGIN and { */ ++ next_token(TC_LBRACE); ++ chain_until_rbrace(); ++ goto next_tok; ++ } ++ if (tclass == TC_END) { + debug_printf_parse("%s: TC_END\n", __func__); + seq = &endseq; +- chain_group(); +- } else if (tclass & TC_FUNCDECL) { ++ /* ensure there is no newline between END and { */ ++ next_token(TC_LBRACE); ++ chain_until_rbrace(); ++ goto next_tok; ++ } ++ if (tclass == TC_FUNCDECL) { ++ func *f; ++ + debug_printf_parse("%s: TC_FUNCDECL\n", __func__); + next_token(TC_FUNCTION); +- g_pos++; + f = newfunc(t_string); +- f->body.first = NULL; +- f->nargs = 0; +- /* Match func arg list: a comma sep list of >= 0 args, and a close paren */ +- while (next_token(TC_VARIABLE | TC_SEQTERM | TC_COMMA)) { +- /* Either an empty arg list, or trailing comma from prev iter +- * must be followed by an arg */ +- if (f->nargs == 0 && t_tclass == TC_SEQTERM) +- break; +- +- /* TC_SEQSTART/TC_COMMA must be followed by TC_VARIABLE */ +- if (t_tclass != TC_VARIABLE) ++ if (f->defined) ++ syntax_error("Duplicate function"); ++ f->defined = 1; ++ //f->body.first = NULL; - already is ++ //f->nargs = 0; - already is ++ /* func arg list: comma sep list of args, and a close paren */ ++ for (;;) { ++ var *v; ++ if (next_token(TC_VARIABLE | TC_RPAREN) == TC_RPAREN) { ++ if (f->nargs == 0) ++ break; /* func() is ok */ ++ /* func(a,) is not ok */ + syntax_error(EMSG_UNEXP_TOKEN); +- ++ } + v = findvar(ahash, t_string); + v->x.aidx = f->nargs++; +- + /* Arg followed either by end of arg list or 1 comma */ +- if (next_token(TC_COMMA | TC_SEQTERM) & TC_SEQTERM) ++ if (next_token(TC_COMMA | TC_RPAREN) == TC_RPAREN) + break; +- if (t_tclass != TC_COMMA) +- syntax_error(EMSG_UNEXP_TOKEN); ++ /* it was a comma, we ate it */ + } + seq = &f->body; +- chain_group(); +- clear_array(ahash); +- } else if (tclass & TC_OPSEQ) { +- debug_printf_parse("%s: TC_OPSEQ\n", __func__); ++ /* ensure there is { after "func F(...)" - but newlines are allowed */ ++ while (next_token(TC_LBRACE | TC_NEWLINE) == TC_NEWLINE) ++ continue; ++ chain_until_rbrace(); ++ hash_clear(ahash); ++ goto next_tok; ++ } ++ seq = &mainseq; ++ if (tclass & TS_OPSEQ) { ++ node *cn; ++ ++ debug_printf_parse("%s: TS_OPSEQ\n", __func__); + rollback_token(); + cn = chain_node(OC_TEST); +- cn->l.n = parse_expr(TC_OPTERM | TC_EOF | TC_GRPSTART); +- if (t_tclass & TC_GRPSTART) { +- debug_printf_parse("%s: TC_GRPSTART\n", __func__); +- rollback_token(); +- chain_group(); ++ cn->l.n = parse_expr(TC_SEMICOL | TC_NEWLINE | TC_EOF | TC_LBRACE); ++ if (t_tclass == TC_LBRACE) { ++ debug_printf_parse("%s: TC_LBRACE\n", __func__); ++ chain_until_rbrace(); + } else { +- debug_printf_parse("%s: !TC_GRPSTART\n", __func__); ++ /* no action, assume default "{ print }" */ ++ debug_printf_parse("%s: !TC_LBRACE\n", __func__); + chain_node(OC_PRINT); + } + cn->r.n = mainseq.last; +- } else /* if (tclass & TC_GRPSTART) */ { +- debug_printf_parse("%s: TC_GRPSTART(?)\n", __func__); +- rollback_token(); +- chain_group(); ++ goto next_tok; + } +- } +- debug_printf_parse("%s: TC_EOF\n", __func__); ++ /* tclass == TC_LBRACE */ ++ debug_printf_parse("%s: TC_LBRACE(?)\n", __func__); ++ chain_until_rbrace(); ++ next_tok: ++ /* Same as next_token() at the top of the loop, + TC_SEMICOL */ ++ tclass = next_token(TS_OPSEQ | TC_LBRACE | TC_BEGIN | TC_END | TC_FUNCDECL ++ | TC_EOF | TC_NEWLINE | TC_SEMICOL); ++ /* gawk allows many newlines, but does not allow more than one semicolon: ++ * BEGIN {...};; ++ * would complain "each rule must have a pattern or an action part". ++ * Same message for ++ * ; BEGIN {...} ++ */ ++ if (tclass != TC_SEMICOL) ++ goto got_tok; /* use this token */ ++ /* else: loop back - ate the semicolon, get and use _next_ token */ ++ } /* for (;;) */ + } + +- + /* -------- program execution part -------- */ + ++/* temporary variables allocator */ ++static var *nvalloc(int sz) ++{ ++ return xzalloc(sz * sizeof(var)); ++} ++ ++static void nvfree(var *v, int sz) ++{ ++ var *p = v; ++ ++ while (--sz >= 0) { ++ if ((p->type & (VF_ARRAY | VF_CHILD)) == VF_ARRAY) { ++ clear_array(iamarray(p)); ++ free(p->x.array->items); ++ free(p->x.array); ++ } ++ if (p->type & VF_WALK) { ++ walker_list *n; ++ walker_list *w = p->x.walker; ++ debug_printf_walker("nvfree: freeing walker @%p\n", &p->x.walker); ++ p->x.walker = NULL; ++ while (w) { ++ n = w->prev; ++ debug_printf_walker(" free(%p)\n", w); ++ free(w); ++ w = n; ++ } ++ } ++ clrvar(p); ++ p++; ++ } ++ ++ free(v); ++} ++ + static node *mk_splitter(const char *s, tsplitter *spl) + { + regex_t *re, *ire; +@@ -1686,7 +1848,7 @@ static node *mk_splitter(const char *s, tsplitter *spl) + re = &spl->re[0]; + ire = &spl->re[1]; + n = &spl->n; +- if ((n->info & OPCLSMASK) == OC_REGEXP) { ++ if (n->info == TI_REGEXP) { + regfree(re); + regfree(ire); // TODO: nuke ire, use re+1? + } +@@ -1699,21 +1861,28 @@ static node *mk_splitter(const char *s, tsplitter *spl) + return n; + } + +-/* use node as a regular expression. Supplied with node ptr and regex_t ++static var *evaluate(node *, var *); ++ ++/* Use node as a regular expression. Supplied with node ptr and regex_t + * storage space. Return ptr to regex (if result points to preg, it should +- * be later regfree'd manually ++ * be later regfree'd manually). + */ + static regex_t *as_regex(node *op, regex_t *preg) + { + int cflags; +- var *v; + const char *s; + +- if ((op->info & OPCLSMASK) == OC_REGEXP) { ++ if (op->info == TI_REGEXP) { + return icase ? op->r.ire : op->l.re; + } +- v = nvalloc(1); +- s = getvar_s(evaluate(op, v)); ++ ++ //tmpvar = nvalloc(1); ++#define TMPVAR (&G.as_regex__tmpvar) ++ // We use a single "static" tmpvar (instead of on-stack or malloced one) ++ // to decrease memory consumption in deeply-recursive awk programs. ++ // The rule to work safely is to never call evaluate() while our static ++ // TMPVAR's value is still needed. ++ s = getvar_s(evaluate(op, TMPVAR)); + + cflags = icase ? REG_EXTENDED | REG_ICASE : REG_EXTENDED; + /* Testcase where REG_EXTENDED fails (unpaired '{'): +@@ -1725,7 +1894,8 @@ static regex_t *as_regex(node *op, regex_t *preg) + cflags &= ~REG_EXTENDED; + xregcomp(preg, s, cflags); + } +- nvfree(v); ++ //nvfree(tmpvar, 1); ++#undef TMPVAR + return preg; + } + +@@ -1745,12 +1915,22 @@ static char* qrealloc(char *b, int n, int *size) + /* resize field storage space */ + static void fsrealloc(int size) + { +- int i; ++ int i, newsize; + + if (size >= maxfields) { ++ /* Sanity cap, easier than catering for overflows */ ++ if (size > 0xffffff) ++ bb_die_memory_exhausted(); ++ + i = maxfields; + maxfields = size + 16; +- Fields = xrealloc(Fields, maxfields * sizeof(Fields[0])); ++ ++ newsize = maxfields * sizeof(Fields[0]); ++ debug_printf_eval("fsrealloc: xrealloc(%p, %u)\n", Fields, newsize); ++ Fields = xrealloc(Fields, newsize); ++ debug_printf_eval("fsrealloc: Fields=%p..%p\n", Fields, (char*)Fields + newsize - 1); ++ /* ^^^ did Fields[] move? debug aid for L.v getting "upstaged" by R.v in evaluate() */ ++ + for (; i < maxfields; i++) { + Fields[i].type = VF_SPECIAL; + Fields[i].string = NULL; +@@ -1802,13 +1982,13 @@ static int awk_split(const char *s, node *spl, char **slist) + c[2] = '\n'; + + n = 0; +- if ((spl->info & OPCLSMASK) == OC_REGEXP) { /* regex split */ ++ if (spl->info == TI_REGEXP) { /* regex split */ + if (!*s) + return n; /* "": zero fields */ + n++; /* at least one field will be there */ + do { + int l; +- regmatch_t pmatch[2]; // TODO: why [2]? [1] is enough... ++ regmatch_t pmatch[1]; + + l = strcspn(s, c+2); /* len till next NUL or \n */ + if (regexec1_nonempty(icase ? spl->r.ire : spl->l.re, s, pmatch) == 0 +@@ -1969,7 +2149,7 @@ static node *nextarg(node **pn) + node *n; + + n = *pn; +- if (n && (n->info & OPCLSMASK) == OC_COMMA) { ++ if (n && n->info == TI_COMMA) { + *pn = n->r.n; + n = n->l.n; + } else { +@@ -2000,8 +2180,7 @@ static void hashwalk_init(var *v, xhash *array) + for (i = 0; i < array->csize; i++) { + hi = array->items[i]; + while (hi) { +- strcpy(w->end, hi->name); +- nextword(&w->end); ++ w->end = stpcpy(w->end, hi->name) + 1; + hi = hi->next; + } + } +@@ -2027,15 +2206,18 @@ static int hashwalk_next(var *v) + /* evaluate node, return 1 when result is true, 0 otherwise */ + static int ptest(node *pattern) + { +- /* ptest__v is "static": to save stack space? */ +- return istrue(evaluate(pattern, &G.ptest__v)); ++ // We use a single "static" tmpvar (instead of on-stack or malloced one) ++ // to decrease memory consumption in deeply-recursive awk programs. ++ // The rule to work safely is to never call evaluate() while our static ++ // TMPVAR's value is still needed. ++ return istrue(evaluate(pattern, &G.ptest__tmpvar)); + } + + /* read next record from stream rsm into a variable v */ + static int awk_getline(rstream *rsm, var *v) + { + char *b; +- regmatch_t pmatch[2]; // TODO: why [2]? [1] is enough... ++ regmatch_t pmatch[1]; + int size, a, p, pp = 0; + int fd, so, eo, r, rp; + char c, *m, *s; +@@ -2061,7 +2243,7 @@ static int awk_getline(rstream *rsm, var *v) + so = eo = p; + r = 1; + if (p > 0) { +- if ((rsplitter.n.info & OPCLSMASK) == OC_REGEXP) { ++ if (rsplitter.n.info == TI_REGEXP) { + if (regexec(icase ? rsplitter.n.r.ire : rsplitter.n.l.re, + b, 1, pmatch, 0) == 0) { + so = pmatch[0].rm_so; +@@ -2133,82 +2315,126 @@ static int awk_getline(rstream *rsm, var *v) + return r; + } + +-static int fmt_num(char *b, int size, const char *format, double n, int int_as_int) +-{ +- int r = 0; +- char c; +- const char *s = format; +- +- if (int_as_int && n == (long long)n) { +- r = snprintf(b, size, "%lld", (long long)n); +- } else { +- do { c = *s; } while (c && *++s); +- if (strchr("diouxX", c)) { +- r = snprintf(b, size, format, (int)n); +- } else if (strchr("eEfgG", c)) { +- r = snprintf(b, size, format, n); +- } else { +- syntax_error(EMSG_INV_FMT); +- } +- } +- return r; +-} +- + /* formatted output into an allocated buffer, return ptr to buffer */ +-static char *awk_printf(node *n) ++#if !ENABLE_FEATURE_AWK_GNU_EXTENSIONS ++# define awk_printf(a, b) awk_printf(a) ++#endif ++static char *awk_printf(node *n, size_t *len) + { +- char *b = NULL; +- char *fmt, *s, *f; +- const char *s1; +- int i, j, incr, bsize; +- char c, c1; +- var *v, *arg; +- +- v = nvalloc(1); +- fmt = f = xstrdup(getvar_s(evaluate(nextarg(&n), v))); +- ++ char *b; ++ char *fmt, *f; ++ size_t i; ++ ++ //tmpvar = nvalloc(1); ++#define TMPVAR (&G.awk_printf__tmpvar) ++ // We use a single "static" tmpvar (instead of on-stack or malloced one) ++ // to decrease memory consumption in deeply-recursive awk programs. ++ // The rule to work safely is to never call evaluate() while our static ++ // TMPVAR's value is still needed. ++ fmt = f = xstrdup(getvar_s(evaluate(nextarg(&n), TMPVAR))); ++ // ^^^^^^^^^ here we immediately strdup() the value, so the later call ++ // to evaluate() potentially recursing into another awk_printf() can't ++ // mangle the value. ++ ++ b = NULL; + i = 0; +- while (*f) { ++ while (1) { /* "print one format spec" loop */ ++ char *s; ++ char c; ++ char sv; ++ var *arg; ++ size_t slen; ++ ++ /* Find end of the next format spec, or end of line */ + s = f; +- while (*f && (*f != '%' || *++f == '%')) +- f++; +- while (*f && !isalpha(*f)) { +- if (*f == '*') +- syntax_error("%*x formats are not supported"); ++ while (1) { ++ c = *f; ++ if (!c) /* no percent chars found at all */ ++ goto nul; + f++; ++ if (c == '%') ++ break; + } +- +- incr = (f - s) + MAXVARFMT; +- b = qrealloc(b, incr + i, &bsize); ++ /* we are past % in "....%..." */ + c = *f; +- if (c != '\0') ++ if (!c) /* "....%" */ ++ goto nul; ++ if (c == '%') { /* "....%%...." */ ++ slen = f - s; ++ s = xstrndup(s, slen); + f++; +- c1 = *f; ++ goto append; /* print "....%" part verbatim */ ++ } ++ while (1) { ++ if (isalpha(c)) ++ break; ++ if (c == '*') ++ syntax_error("%*x formats are not supported"); ++ c = *++f; ++ if (!c) { /* "....%...." and no letter found after % */ ++ /* Example: awk 'BEGIN { printf "^^^%^^^\n"; }' */ ++ nul: ++ slen = f - s; ++ goto tail; /* print remaining string, exit loop */ ++ } ++ } ++ /* we are at A in "....%...A..." */ ++ ++ arg = evaluate(nextarg(&n), TMPVAR); ++ ++ /* Result can be arbitrarily long. Example: ++ * printf "%99999s", "BOOM" ++ */ ++ sv = *++f; + *f = '\0'; +- arg = evaluate(nextarg(&n), v); +- +- j = i; +- if (c == 'c' || !c) { +- i += sprintf(b+i, s, is_numeric(arg) ? +- (char)getvar_i(arg) : *getvar_s(arg)); +- } else if (c == 's') { +- s1 = getvar_s(arg); +- b = qrealloc(b, incr+i+strlen(s1), &bsize); +- i += sprintf(b+i, s, s1); ++ if (c == 'c') { ++ char cc = is_numeric(arg) ? getvar_i(arg) : *getvar_s(arg); ++ char *r = xasprintf(s, cc ? cc : '^' /* else strlen will be wrong */); ++ slen = strlen(r); ++ if (cc == '\0') /* if cc is NUL, re-format the string with it */ ++ sprintf(r, s, cc); ++ s = r; + } else { +- i += fmt_num(b+i, incr, s, getvar_i(arg), FALSE); ++ if (c == 's') { ++ s = xasprintf(s, getvar_s(arg)); ++ } else { ++ double d = getvar_i(arg); ++ if (strchr("diouxX", c)) { ++//TODO: make it wider here (%x -> %llx etc)? ++ s = xasprintf(s, (int)d); ++ } else if (strchr("eEfFgGaA", c)) { ++ s = xasprintf(s, d); ++ } else { ++//TODO: GNU Awk 5.0.1: printf "%W" prints "%W", does not error out ++ syntax_error(EMSG_INV_FMT); ++ } ++ } ++ slen = strlen(s); + } +- *f = c1; +- +- /* if there was an error while sprintf, return value is negative */ +- if (i < j) +- i = j; ++ *f = sv; ++ append: ++ if (i == 0) { ++ b = s; ++ i = slen; ++ continue; ++ } ++ tail: ++ b = xrealloc(b, i + slen + 1); ++ strcpy(b + i, s); ++ i += slen; ++ if (!c) /* s is NOT allocated and this is the last part of string? */ ++ break; ++ free(s); + } + + free(fmt); +- nvfree(v); +- b = xrealloc(b, i + 1); +- b[i] = '\0'; ++ //nvfree(tmpvar, 1); ++#undef TMPVAR ++ ++#if ENABLE_FEATURE_AWK_GNU_EXTENSIONS ++ if (len) ++ *len = i; ++#endif + return b; + } + +@@ -2338,33 +2564,59 @@ static NOINLINE int do_mktime(const char *ds) + return mktime(&then); + } + ++/* Reduce stack usage in exec_builtin() by keeping match() code separate */ ++static NOINLINE var *do_match(node *an1, const char *as0) ++{ ++ regmatch_t pmatch[1]; ++ regex_t sreg, *re; ++ int n, start, len; ++ ++ re = as_regex(an1, &sreg); ++ n = regexec(re, as0, 1, pmatch, 0); ++ if (re == &sreg) ++ regfree(re); ++ start = 0; ++ len = -1; ++ if (n == 0) { ++ start = pmatch[0].rm_so + 1; ++ len = pmatch[0].rm_eo - pmatch[0].rm_so; ++ } ++ setvar_i(newvar("RLENGTH"), len); ++ return setvar_i(newvar("RSTART"), start); ++} ++ ++/* Reduce stack usage in evaluate() by keeping builtins' code separate */ + static NOINLINE var *exec_builtin(node *op, var *res) + { + #define tspl (G.exec_builtin__tspl) + +- var *tv; ++ var *tmpvars; + node *an[4]; + var *av[4]; + const char *as[4]; +- regmatch_t pmatch[2]; +- regex_t sreg, *re; + node *spl; + uint32_t isr, info; + int nargs; + time_t tt; + int i, l, ll, n; + +- tv = nvalloc(4); ++ tmpvars = nvalloc(4); ++#define TMPVAR0 (tmpvars) ++#define TMPVAR1 (tmpvars + 1) ++#define TMPVAR2 (tmpvars + 2) ++#define TMPVAR3 (tmpvars + 3) ++#define TMPVAR(i) (tmpvars + (i)) + isr = info = op->info; + op = op->l.n; + + av[2] = av[3] = NULL; + for (i = 0; i < 4 && op; i++) { + an[i] = nextarg(&op); +- if (isr & 0x09000000) +- av[i] = evaluate(an[i], &tv[i]); +- if (isr & 0x08000000) +- as[i] = getvar_s(av[i]); ++ if (isr & 0x09000000) { ++ av[i] = evaluate(an[i], TMPVAR(i)); ++ if (isr & 0x08000000) ++ as[i] = getvar_s(av[i]); ++ } + isr >>= 1; + } + +@@ -2386,8 +2638,8 @@ static NOINLINE var *exec_builtin(node *op, var *res) + char *s, *s1; + + if (nargs > 2) { +- spl = (an[2]->info & OPCLSMASK) == OC_REGEXP ? +- an[2] : mk_splitter(getvar_s(evaluate(an[2], &tv[2])), &tspl); ++ spl = (an[2]->info == TI_REGEXP) ? an[2] ++ : mk_splitter(getvar_s(evaluate(an[2], TMPVAR2)), &tspl); + } else { + spl = &fsplitter.n; + } +@@ -2501,20 +2753,7 @@ static NOINLINE var *exec_builtin(node *op, var *res) + break; + + case B_ma: +- re = as_regex(an[1], &sreg); +- n = regexec(re, as[0], 1, pmatch, 0); +- if (n == 0) { +- pmatch[0].rm_so++; +- pmatch[0].rm_eo++; +- } else { +- pmatch[0].rm_so = 0; +- pmatch[0].rm_eo = -1; +- } +- setvar_i(newvar("RSTART"), pmatch[0].rm_so); +- setvar_i(newvar("RLENGTH"), pmatch[0].rm_eo - pmatch[0].rm_so); +- setvar_i(res, pmatch[0].rm_so); +- if (re == &sreg) +- regfree(re); ++ res = do_match(an[1], as[0]); + break; + + case B_ge: +@@ -2530,14 +2769,79 @@ static NOINLINE var *exec_builtin(node *op, var *res) + break; + } + +- nvfree(tv); ++ nvfree(tmpvars, 4); ++#undef TMPVAR0 ++#undef TMPVAR1 ++#undef TMPVAR2 ++#undef TMPVAR3 ++#undef TMPVAR ++ + return res; + #undef tspl + } + ++/* if expr looks like "var=value", perform assignment and return 1, ++ * otherwise return 0 */ ++static int is_assignment(const char *expr) ++{ ++ char *exprc, *val; ++ ++ val = (char*)endofname(expr); ++ if (val == (char*)expr || *val != '=') { ++ return FALSE; ++ } ++ ++ exprc = xstrdup(expr); ++ val = exprc + (val - expr); ++ *val++ = '\0'; ++ ++ unescape_string_in_place(val); ++ setvar_u(newvar(exprc), val); ++ free(exprc); ++ return TRUE; ++} ++ ++/* switch to next input file */ ++static rstream *next_input_file(void) ++{ ++#define rsm (G.next_input_file__rsm) ++#define files_happen (G.next_input_file__files_happen) ++ ++ const char *fname, *ind; ++ ++ if (rsm.F) ++ fclose(rsm.F); ++ rsm.F = NULL; ++ rsm.pos = rsm.adv = 0; ++ ++ for (;;) { ++ if (getvar_i(intvar[ARGIND])+1 >= getvar_i(intvar[ARGC])) { ++ if (files_happen) ++ return NULL; ++ fname = "-"; ++ rsm.F = stdin; ++ break; ++ } ++ ind = getvar_s(incvar(intvar[ARGIND])); ++ fname = getvar_s(findvar(iamarray(intvar[ARGV]), ind)); ++ if (fname && *fname && !is_assignment(fname)) { ++ rsm.F = xfopen_stdin(fname); ++ break; ++ } ++ } ++ ++ files_happen = TRUE; ++ setvar_s(intvar[FILENAME], fname); ++ return &rsm; ++#undef rsm ++#undef files_happen ++} ++ + /* + * Evaluate node - the heart of the program. Supplied with subtree +- * and place where to store result. returns ptr to result. ++ * and "res" variable to assign the result to if we evaluate an expression. ++ * If node refers to e.g. a variable or a field, no assignment happens. ++ * Return ptr to the result (which may or may not be the "res" variable!) + */ + #define XC(n) ((n) >> 8) + +@@ -2549,14 +2853,16 @@ static var *evaluate(node *op, var *res) + #define seed (G.evaluate__seed) + #define sreg (G.evaluate__sreg) + +- var *v1; ++ var *tmpvars; + + if (!op) + return setvar_s(res, NULL); + + debug_printf_eval("entered %s()\n", __func__); + +- v1 = nvalloc(2); ++ tmpvars = nvalloc(2); ++#define TMPVAR0 (tmpvars) ++#define TMPVAR1 (tmpvars + 1) + + while (op) { + struct { +@@ -2578,48 +2884,35 @@ static var *evaluate(node *op, var *res) + op1 = op->l.n; + debug_printf_eval("opinfo:%08x opn:%08x\n", opinfo, opn); + +- /* "delete" is special: +- * "delete array[var--]" must evaluate index expr only once, +- * must not evaluate it in "execute inevitable things" part. +- */ +- if (XC(opinfo & OPCLSMASK) == XC(OC_DELETE)) { +- uint32_t info = op1->info & OPCLSMASK; +- var *v; +- +- debug_printf_eval("DELETE\n"); +- if (info == OC_VAR) { +- v = op1->l.v; +- } else if (info == OC_FNARG) { +- v = &fnargs[op1->l.aidx]; +- } else { +- syntax_error(EMSG_NOT_ARRAY); ++ /* execute inevitable things */ ++ if (opinfo & OF_RES1) { ++ if ((opinfo & OF_REQUIRED) && !op1) ++ syntax_error(EMSG_TOO_FEW_ARGS); ++ L.v = evaluate(op1, TMPVAR0); ++ if (opinfo & OF_STR1) { ++ L.s = getvar_s(L.v); ++ debug_printf_eval("L.s:'%s'\n", L.s); + } +- if (op1->r.n) { /* array ref? */ +- const char *s; +- s = getvar_s(evaluate(op1->r.n, v1)); +- hash_remove(iamarray(v), s); +- } else { +- clear_array(iamarray(v)); ++ if (opinfo & OF_NUM1) { ++ L_d = getvar_i(L.v); ++ debug_printf_eval("L_d:%f\n", L_d); + } +- goto next; + } +- +- /* execute inevitable things */ +- if (opinfo & OF_RES1) +- L.v = evaluate(op1, v1); +- if (opinfo & OF_RES2) +- R.v = evaluate(op->r.n, v1+1); +- if (opinfo & OF_STR1) { +- L.s = getvar_s(L.v); +- debug_printf_eval("L.s:'%s'\n", L.s); +- } +- if (opinfo & OF_STR2) { +- R.s = getvar_s(R.v); +- debug_printf_eval("R.s:'%s'\n", R.s); +- } +- if (opinfo & OF_NUM1) { +- L_d = getvar_i(L.v); +- debug_printf_eval("L_d:%f\n", L_d); ++ /* NB: Must get string/numeric values of L (done above) ++ * _before_ evaluate()'ing R.v: if both L and R are $NNNs, ++ * and right one is large, then L.v points to Fields[NNN1], ++ * second evaluate() reallocates and moves (!) Fields[], ++ * R.v points to Fields[NNN2] but L.v now points to freed mem! ++ * (Seen trying to evaluate "$444 $44444") ++ */ ++ if (opinfo & OF_RES2) { ++ R.v = evaluate(op->r.n, TMPVAR1); ++ //TODO: L.v may be invalid now, set L.v to NULL to catch bugs? ++ //L.v = NULL; ++ if (opinfo & OF_STR2) { ++ R.s = getvar_s(R.v); ++ debug_printf_eval("R.s:'%s'\n", R.s); ++ } + } + + debug_printf_eval("switch(0x%x)\n", XC(opinfo & OPCLSMASK)); +@@ -2629,7 +2922,8 @@ static var *evaluate(node *op, var *res) + + /* test pattern */ + case XC( OC_TEST ): +- if ((op1->info & OPCLSMASK) == OC_COMMA) { ++ debug_printf_eval("TEST\n"); ++ if (op1->info == TI_COMMA) { + /* it's range pattern */ + if ((opinfo & OF_CHECKED) || ptest(op1->l.n)) { + op->info |= OF_CHECKED; +@@ -2646,25 +2940,32 @@ static var *evaluate(node *op, var *res) + + /* just evaluate an expression, also used as unconditional jump */ + case XC( OC_EXEC ): ++ debug_printf_eval("EXEC\n"); + break; + + /* branch, used in if-else and various loops */ + case XC( OC_BR ): ++ debug_printf_eval("BR\n"); + op = istrue(L.v) ? op->a.n : op->r.n; + break; + + /* initialize for-in loop */ + case XC( OC_WALKINIT ): ++ debug_printf_eval("WALKINIT\n"); + hashwalk_init(L.v, iamarray(R.v)); + break; + + /* get next array item */ + case XC( OC_WALKNEXT ): ++ debug_printf_eval("WALKNEXT\n"); + op = hashwalk_next(L.v) ? op->a.n : op->r.n; + break; + + case XC( OC_PRINT ): +- case XC( OC_PRINTF ): { ++ debug_printf_eval("PRINT /\n"); ++ case XC( OC_PRINTF ): ++ debug_printf_eval("PRINTF\n"); ++ { + FILE *F = stdout; + + if (op->r.n) { +@@ -2682,55 +2983,94 @@ static var *evaluate(node *op, var *res) + F = rsm->F; + } + ++ /* Can't just check 'opinfo == OC_PRINT' here, parser ORs ++ * additional bits to opinfos of print/printf with redirects ++ */ + if ((opinfo & OPCLSMASK) == OC_PRINT) { + if (!op1) { + fputs(getvar_s(intvar[F0]), F); + } else { +- while (op1) { +- var *v = evaluate(nextarg(&op1), v1); ++ for (;;) { ++ var *v = evaluate(nextarg(&op1), TMPVAR0); + if (v->type & VF_NUMBER) { +- fmt_num(g_buf, MAXVARFMT, getvar_s(intvar[OFMT]), +- getvar_i(v), TRUE); ++ fmt_num(getvar_s(intvar[OFMT]), ++ getvar_i(v)); + fputs(g_buf, F); + } else { + fputs(getvar_s(v), F); + } +- +- if (op1) +- fputs(getvar_s(intvar[OFS]), F); ++ if (!op1) ++ break; ++ fputs(getvar_s(intvar[OFS]), F); + } + } + fputs(getvar_s(intvar[ORS]), F); +- +- } else { /* OC_PRINTF */ +- char *s = awk_printf(op1); ++ } else { /* PRINTF */ ++ IF_FEATURE_AWK_GNU_EXTENSIONS(size_t len;) ++ char *s = awk_printf(op1, &len); ++#if ENABLE_FEATURE_AWK_GNU_EXTENSIONS ++ fwrite(s, len, 1, F); ++#else + fputs(s, F); ++#endif + free(s); + } + fflush(F); + break; + } + +- /* case XC( OC_DELETE ): - moved to happen before arg evaluation */ ++ case XC( OC_DELETE ): ++ debug_printf_eval("DELETE\n"); ++ { ++ /* "delete" is special: ++ * "delete array[var--]" must evaluate index expr only once. ++ */ ++ uint32_t info = op1->info & OPCLSMASK; ++ var *v; ++ ++ if (info == OC_VAR) { ++ v = op1->l.v; ++ } else if (info == OC_FNARG) { ++ v = &fnargs[op1->l.aidx]; ++ } else { ++ syntax_error(EMSG_NOT_ARRAY); ++ } ++ if (op1->r.n) { /* array ref? */ ++ const char *s; ++ s = getvar_s(evaluate(op1->r.n, TMPVAR0)); ++ hash_remove(iamarray(v), s); ++ } else { ++ clear_array(iamarray(v)); ++ } ++ break; ++ } + + case XC( OC_NEWSOURCE ): ++ debug_printf_eval("NEWSOURCE\n"); + g_progname = op->l.new_progname; + break; + + case XC( OC_RETURN ): ++ debug_printf_eval("RETURN\n"); + copyvar(res, L.v); + break; + + case XC( OC_NEXTFILE ): ++ debug_printf_eval("NEXTFILE\n"); + nextfile = TRUE; + case XC( OC_NEXT ): ++ debug_printf_eval("NEXT\n"); + nextrec = TRUE; + case XC( OC_DONE ): ++ debug_printf_eval("DONE\n"); + clrvar(res); + break; + + case XC( OC_EXIT ): +- awk_exit(L_d); ++ debug_printf_eval("EXIT\n"); ++ if (op1) ++ G.exitcode = (int)L_d; ++ awk_exit(); + + /* -- recursive node type -- */ + +@@ -2749,15 +3089,18 @@ static var *evaluate(node *op, var *res) + break; + + case XC( OC_IN ): ++ debug_printf_eval("IN\n"); + setvar_i(res, hash_search(iamarray(R.v), L.s) ? 1 : 0); + break; + + case XC( OC_REGEXP ): ++ debug_printf_eval("REGEXP\n"); + op1 = op; + L.s = getvar_s(intvar[F0]); + goto re_cont; + + case XC( OC_MATCH ): ++ debug_printf_eval("MATCH\n"); + op1 = op->r.n; + re_cont: + { +@@ -2772,61 +3115,80 @@ static var *evaluate(node *op, var *res) + case XC( OC_MOVE ): + debug_printf_eval("MOVE\n"); + /* if source is a temporary string, jusk relink it to dest */ +-//Disabled: if R.v is numeric but happens to have cached R.v->string, +-//then L.v ends up being a string, which is wrong +-// if (R.v == v1+1 && R.v->string) { +-// res = setvar_p(L.v, R.v->string); +-// R.v->string = NULL; +-// } else { ++ if (R.v == TMPVAR1 ++ && !(R.v->type & VF_NUMBER) ++ /* Why check !NUMBER? if R.v is a number but has cached R.v->string, ++ * L.v ends up a string, which is wrong */ ++ /*&& R.v->string - always not NULL (right?) */ ++ ) { ++ res = setvar_p(L.v, R.v->string); /* avoids strdup */ ++ R.v->string = NULL; ++ } else { + res = copyvar(L.v, R.v); +-// } ++ } + break; + + case XC( OC_TERNARY ): +- if ((op->r.n->info & OPCLSMASK) != OC_COLON) ++ debug_printf_eval("TERNARY\n"); ++ if (op->r.n->info != TI_COLON) + syntax_error(EMSG_POSSIBLE_ERROR); + res = evaluate(istrue(L.v) ? op->r.n->l.n : op->r.n->r.n, res); + break; + + case XC( OC_FUNC ): { +- var *vbeg, *v; ++ var *argvars, *sv_fnargs; + const char *sv_progname; ++ int nargs, i; + +- /* The body might be empty, still has to eval the args */ +- if (!op->r.n->info && !op->r.f->body.first) ++ debug_printf_eval("FUNC\n"); ++ ++ if (!op->r.f->defined) + syntax_error(EMSG_UNDEF_FUNC); + +- vbeg = v = nvalloc(op->r.f->nargs + 1); ++ /* The body might be empty, still has to eval the args */ ++ nargs = op->r.f->nargs; ++ argvars = nvalloc(nargs); ++ i = 0; + while (op1) { +- var *arg = evaluate(nextarg(&op1), v1); +- copyvar(v, arg); +- v->type |= VF_CHILD; +- v->x.parent = arg; +- if (++v - vbeg >= op->r.f->nargs) +- break; ++ var *arg = evaluate(nextarg(&op1), TMPVAR0); ++ if (i == nargs) { ++ /* call with more arguments than function takes. ++ * (gawk warns: "warning: function 'f' called with more arguments than declared"). ++ * They are still evaluated, but discarded: */ ++ clrvar(arg); ++ continue; ++ } ++ copyvar(&argvars[i], arg); ++ argvars[i].type |= VF_CHILD; ++ argvars[i].x.parent = arg; ++ i++; + } + +- v = fnargs; +- fnargs = vbeg; ++ sv_fnargs = fnargs; + sv_progname = g_progname; + ++ fnargs = argvars; + res = evaluate(op->r.f->body.first, res); ++ nvfree(argvars, nargs); + + g_progname = sv_progname; +- nvfree(fnargs); +- fnargs = v; ++ fnargs = sv_fnargs; + + break; + } + + case XC( OC_GETLINE ): +- case XC( OC_PGETLINE ): { ++ debug_printf_eval("GETLINE /\n"); ++ case XC( OC_PGETLINE ): ++ debug_printf_eval("PGETLINE\n"); ++ { + rstream *rsm; + int i; + + if (op1) { + rsm = newfile(L.s); + if (!rsm->F) { ++ /* NB: can't use "opinfo == TI_PGETLINE", would break "cmd" | getline */ + if ((opinfo & OPCLSMASK) == OC_PGETLINE) { + rsm->F = popen(L.s, "r"); + rsm->is_pipe = TRUE; +@@ -2861,16 +3223,34 @@ static var *evaluate(node *op, var *res) + /* simple builtins */ + case XC( OC_FBLTIN ): { + double R_d = R_d; /* for compiler */ ++ debug_printf_eval("FBLTIN\n"); ++ ++ if (op1 && op1->info == TI_COMMA) ++ /* Simple builtins take one arg maximum */ ++ syntax_error("Too many arguments"); + + switch (opn) { + case F_in: + R_d = (long long)L_d; + break; + +- case F_rn: +- R_d = (double)rand() / (double)RAND_MAX; ++ case F_rn: /*rand*/ ++ if (op1) ++ syntax_error("Too many arguments"); ++ { ++#if RAND_MAX >= 0x7fffffff ++ uint32_t u = ((uint32_t)rand() << 16) ^ rand(); ++ uint64_t v = ((uint64_t)rand() << 32) | u; ++ /* the above shift+or is optimized out on 32-bit arches */ ++# if RAND_MAX > 0x7fffffff ++ v &= 0x7fffffffffffffffULL; ++# endif ++ R_d = (double)v / 0x8000000000000000ULL; ++#else ++# error Not implemented for this value of RAND_MAX ++#endif + break; +- ++ } + case F_co: + if (ENABLE_FEATURE_AWK_LIBM) { + R_d = cos(L_d); +@@ -2910,7 +3290,9 @@ static var *evaluate(node *op, var *res) + srand(seed); + break; + +- case F_ti: ++ case F_ti: /*systime*/ ++ if (op1) ++ syntax_error("Too many arguments"); + R_d = time(NULL); + break; + +@@ -2949,7 +3331,7 @@ static var *evaluate(node *op, var *res) + rstream *rsm; + int err = 0; + rsm = (rstream *)hash_search(fdhash, L.s); +- debug_printf_eval("OC_FBLTIN F_cl rsm:%p\n", rsm); ++ debug_printf_eval("OC_FBLTIN close: op1:%p s:'%s' rsm:%p\n", op1, L.s, rsm); + if (rsm) { + debug_printf_eval("OC_FBLTIN F_cl " + "rsm->is_pipe:%d, ->F:%p\n", +@@ -2960,6 +3342,11 @@ static var *evaluate(node *op, var *res) + */ + if (rsm->F) + err = rsm->is_pipe ? pclose(rsm->F) : fclose(rsm->F); ++//TODO: fix this case: ++// $ awk 'BEGIN { print close(""); print ERRNO }' ++// -1 ++// close of redirection that was never opened ++// (we print 0, 0) + free(rsm->buffer); + hash_remove(fdhash, L.s); + } +@@ -2974,14 +3361,18 @@ static var *evaluate(node *op, var *res) + } + + case XC( OC_BUILTIN ): ++ debug_printf_eval("BUILTIN\n"); + res = exec_builtin(op, res); + break; + + case XC( OC_SPRINTF ): +- setvar_p(res, awk_printf(op1)); ++ debug_printf_eval("SPRINTF\n"); ++ setvar_p(res, awk_printf(op1, NULL)); + break; + +- case XC( OC_UNARY ): { ++ case XC( OC_UNARY ): ++ debug_printf_eval("UNARY\n"); ++ { + double Ld, R_d; + + Ld = R_d = getvar_i(R.v); +@@ -3011,7 +3402,9 @@ static var *evaluate(node *op, var *res) + break; + } + +- case XC( OC_FIELD ): { ++ case XC( OC_FIELD ): ++ debug_printf_eval("FIELD\n"); ++ { + int i = (int)getvar_i(R.v); + if (i < 0) + syntax_error(EMSG_NEGATIVE_FIELD); +@@ -3028,26 +3421,33 @@ static var *evaluate(node *op, var *res) + + /* concatenation (" ") and index joining (",") */ + case XC( OC_CONCAT ): ++ debug_printf_eval("CONCAT /\n"); + case XC( OC_COMMA ): { + const char *sep = ""; +- if ((opinfo & OPCLSMASK) == OC_COMMA) ++ debug_printf_eval("COMMA\n"); ++ if (opinfo == TI_COMMA) + sep = getvar_s(intvar[SUBSEP]); + setvar_p(res, xasprintf("%s%s%s", L.s, sep, R.s)); + break; + } + + case XC( OC_LAND ): ++ debug_printf_eval("LAND\n"); + setvar_i(res, istrue(L.v) ? ptest(op->r.n) : 0); + break; + + case XC( OC_LOR ): ++ debug_printf_eval("LOR\n"); + setvar_i(res, istrue(L.v) ? 1 : ptest(op->r.n)); + break; + + case XC( OC_BINARY ): +- case XC( OC_REPLACE ): { ++ debug_printf_eval("BINARY /\n"); ++ case XC( OC_REPLACE ): ++ debug_printf_eval("REPLACE\n"); ++ { + double R_d = getvar_i(R.v); +- debug_printf_eval("BINARY/REPLACE: R_d:%f opn:%c\n", R_d, opn); ++ debug_printf_eval("R_d:%f opn:%c\n", R_d, opn); + switch (opn) { + case '+': + L_d += R_d; +@@ -3083,6 +3483,7 @@ static var *evaluate(node *op, var *res) + case XC( OC_COMPARE ): { + int i = i; /* for compiler */ + double Ld; ++ debug_printf_eval("COMPARE\n"); + + if (is_numeric(L.v) && is_numeric(R.v)) { + Ld = getvar_i(L.v) - getvar_i(R.v); +@@ -3109,7 +3510,7 @@ static var *evaluate(node *op, var *res) + default: + syntax_error(EMSG_POSSIBLE_ERROR); + } /* switch */ +- next: ++ + if ((opinfo & OPCLSMASK) <= SHIFT_TIL_THIS) + op = op->a.n; + if ((opinfo & OPCLSMASK) >= RECUR_FROM_THIS) +@@ -3118,7 +3519,10 @@ static var *evaluate(node *op, var *res) + break; + } /* while (op) */ + +- nvfree(v1); ++ nvfree(tmpvars, 2); ++#undef TMPVAR0 ++#undef TMPVAR1 ++ + debug_printf_eval("returning from %s(): %p\n", __func__, res); + return res; + #undef fnargs +@@ -3126,25 +3530,21 @@ static var *evaluate(node *op, var *res) + #undef sreg + } + +- + /* -------- main & co. -------- */ + +-static int awk_exit(int r) ++static int awk_exit(void) + { +- var tv; + unsigned i; +- hash_item *hi; +- +- zero_out_var(&tv); + + if (!exiting) { + exiting = TRUE; + nextrec = FALSE; +- evaluate(endseq.first, &tv); ++ evaluate(endseq.first, &G.exit__tmpvar); + } + + /* waiting for children */ + for (i = 0; i < fdhash->csize; i++) { ++ hash_item *hi; + hi = fdhash->items[i]; + while (hi) { + if (hi->data.rs.F && hi->data.rs.is_pipe) +@@ -3153,65 +3553,7 @@ static int awk_exit(int r) + } + } + +- exit(r); +-} +- +-/* if expr looks like "var=value", perform assignment and return 1, +- * otherwise return 0 */ +-static int is_assignment(const char *expr) +-{ +- char *exprc, *val; +- +- if (!isalnum_(*expr) || (val = strchr(expr, '=')) == NULL) { +- return FALSE; +- } +- +- exprc = xstrdup(expr); +- val = exprc + (val - expr); +- *val++ = '\0'; +- +- unescape_string_in_place(val); +- setvar_u(newvar(exprc), val); +- free(exprc); +- return TRUE; +-} +- +-/* switch to next input file */ +-static rstream *next_input_file(void) +-{ +-#define rsm (G.next_input_file__rsm) +-#define files_happen (G.next_input_file__files_happen) +- +- FILE *F; +- const char *fname, *ind; +- +- if (rsm.F) +- fclose(rsm.F); +- rsm.F = NULL; +- rsm.pos = rsm.adv = 0; +- +- for (;;) { +- if (getvar_i(intvar[ARGIND])+1 >= getvar_i(intvar[ARGC])) { +- if (files_happen) +- return NULL; +- fname = "-"; +- F = stdin; +- break; +- } +- ind = getvar_s(incvar(intvar[ARGIND])); +- fname = getvar_s(findvar(iamarray(intvar[ARGV]), ind)); +- if (fname && *fname && !is_assignment(fname)) { +- F = xfopen_stdin(fname); +- break; +- } +- } +- +- files_happen = TRUE; +- setvar_s(intvar[FILENAME], fname); +- rsm.F = F; +- return &rsm; +-#undef rsm +-#undef files_happen ++ exit(G.exitcode); + } + + int awk_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; +@@ -3224,12 +3566,7 @@ int awk_main(int argc UNUSED_PARAM, char **argv) + #if ENABLE_FEATURE_AWK_GNU_EXTENSIONS + llist_t *list_e = NULL; + #endif +- int i, j; +- var *v; +- var tv; +- char **envp; +- char *vnames = (char *)vNames; /* cheat */ +- char *vvalues = (char *)vValues; ++ int i; + + INIT_G(); + +@@ -3238,48 +3575,43 @@ int awk_main(int argc UNUSED_PARAM, char **argv) + if (ENABLE_LOCALE_SUPPORT) + setlocale(LC_NUMERIC, "C"); + +- zero_out_var(&tv); +- +- /* allocate global buffer */ +- g_buf = xmalloc(MAXVARFMT + 1); +- +- vhash = hash_init(); +- ahash = hash_init(); +- fdhash = hash_init(); +- fnhash = hash_init(); +- + /* initialize variables */ +- for (i = 0; *vnames; i++) { +- intvar[i] = v = newvar(nextword(&vnames)); +- if (*vvalues != '\377') +- setvar_s(v, nextword(&vvalues)); +- else +- setvar_i(v, 0); +- +- if (*vnames == '*') { +- v->type |= VF_SPECIAL; +- vnames++; ++ vhash = hash_init(); ++ { ++ char *vnames = (char *)vNames; /* cheat */ ++ char *vvalues = (char *)vValues; ++ for (i = 0; *vnames; i++) { ++ var *v; ++ intvar[i] = v = newvar(nextword(&vnames)); ++ if (*vvalues != '\377') ++ setvar_s(v, nextword(&vvalues)); ++ else ++ setvar_i(v, 0); ++ ++ if (*vnames == '*') { ++ v->type |= VF_SPECIAL; ++ vnames++; ++ } + } + } + + handle_special(intvar[FS]); + handle_special(intvar[RS]); + +- newfile("/dev/stdin")->F = stdin; +- newfile("/dev/stdout")->F = stdout; +- newfile("/dev/stderr")->F = stderr; +- + /* Huh, people report that sometimes environ is NULL. Oh well. */ +- if (environ) for (envp = environ; *envp; envp++) { +- /* environ is writable, thus we don't strdup it needlessly */ +- char *s = *envp; +- char *s1 = strchr(s, '='); +- if (s1) { +- *s1 = '\0'; +- /* Both findvar and setvar_u take const char* +- * as 2nd arg -> environment is not trashed */ +- setvar_u(findvar(iamarray(intvar[ENVIRON]), s), s1 + 1); +- *s1 = '='; ++ if (environ) { ++ char **envp; ++ for (envp = environ; *envp; envp++) { ++ /* environ is writable, thus we don't strdup it needlessly */ ++ char *s = *envp; ++ char *s1 = strchr(s, '='); ++ if (s1) { ++ *s1 = '\0'; ++ /* Both findvar and setvar_u take const char* ++ * as 2nd arg -> environment is not trashed */ ++ setvar_u(findvar(iamarray(intvar[ENVIRON]), s), s1 + 1); ++ *s1 = '='; ++ } + } + } + opt = getopt32(argv, OPTSTR_AWK, &opt_F, &list_v, &list_f, IF_FEATURE_AWK_GNU_EXTENSIONS(&list_e,) NULL); +@@ -3295,20 +3627,19 @@ int awk_main(int argc UNUSED_PARAM, char **argv) + if (!is_assignment(llist_pop(&list_v))) + bb_show_usage(); + } ++ ++ /* Parse all supplied programs */ ++ fnhash = hash_init(); ++ ahash = hash_init(); + while (list_f) { +- char *s = NULL; +- FILE *from_file; ++ int fd; ++ char *s; + + g_progname = llist_pop(&list_f); +- from_file = xfopen_stdin(g_progname); +- /* one byte is reserved for some trick in next_token */ +- for (i = j = 1; j > 0; i += j) { +- s = xrealloc(s, i + 4096); +- j = fread(s + i, 1, 4094, from_file); +- } +- s[i] = '\0'; +- fclose(from_file); +- parse_program(s + 1); ++ fd = xopen_stdin(g_progname); ++ s = xmalloc_read(fd, NULL); /* it's NUL-terminated */ ++ close(fd); ++ parse_program(s); + free(s); + } + g_progname = "cmd. line"; +@@ -3317,11 +3648,23 @@ int awk_main(int argc UNUSED_PARAM, char **argv) + parse_program(llist_pop(&list_e)); + } + #endif ++//FIXME: preserve order of -e and -f ++//TODO: implement -i LIBRARY and -E FILE too, they are easy-ish + if (!(opt & (OPT_f | OPT_e))) { + if (!*argv) + bb_show_usage(); + parse_program(*argv++); + } ++ /* Free unused parse structures */ ++ //hash_free(fnhash); // ~250 bytes when empty, used only for function names ++ //^^^^^^^^^^^^^^^^^ does not work, hash_clear() inside SEGVs ++ // (IOW: hash_clear() assumes it's a hash of variables. fnhash is not). ++ free(fnhash->items); ++ free(fnhash); ++ fnhash = NULL; // debug ++ //hash_free(ahash); // empty after parsing, will reuse as fdhash instead of freeing ++ ++ /* Parsing done, on to executing */ + + /* fill in ARGV array */ + setari_u(intvar[ARGV], 0, "awk"); +@@ -3330,9 +3673,14 @@ int awk_main(int argc UNUSED_PARAM, char **argv) + setari_u(intvar[ARGV], ++i, *argv++); + setvar_i(intvar[ARGC], i + 1); + +- evaluate(beginseq.first, &tv); ++ //fdhash = ahash; // done via define ++ newfile("/dev/stdin")->F = stdin; ++ newfile("/dev/stdout")->F = stdout; ++ newfile("/dev/stderr")->F = stderr; ++ ++ evaluate(beginseq.first, &G.main__tmpvar); + if (!mainseq.first && !endseq.first) +- awk_exit(EXIT_SUCCESS); ++ awk_exit(); + + /* input file could already be opened in BEGIN block */ + if (!iF) +@@ -3347,7 +3695,7 @@ int awk_main(int argc UNUSED_PARAM, char **argv) + nextrec = FALSE; + incvar(intvar[NR]); + incvar(intvar[FNR]); +- evaluate(mainseq.first, &tv); ++ evaluate(mainseq.first, &G.main__tmpvar); + + if (nextfile) + break; +@@ -3359,6 +3707,6 @@ int awk_main(int argc UNUSED_PARAM, char **argv) + iF = next_input_file(); + } + +- awk_exit(EXIT_SUCCESS); ++ awk_exit(); + /*return 0;*/ + } +diff --git a/testsuite/awk.tests b/testsuite/awk.tests +index 92c83d719..4a7a01245 100755 +--- a/testsuite/awk.tests ++++ b/testsuite/awk.tests +@@ -44,6 +44,16 @@ testing "awk handles empty function f(arg){}" \ + "L1\n\nL2\n\n" \ + "" "" + ++prg=' ++function empty_fun(){} ++END {empty_fun() ++ print "Ok" ++}' ++testing "awk handles empty function f(){}" \ ++ "awk '$prg'" \ ++ "Ok\n" \ ++ "" "" ++ + prg=' + function outer_fun() { + return 1 +@@ -71,6 +81,23 @@ testing "awk properly handles undefined function" \ + "L1\n\nawk: cmd. line:5: Call to undefined function\n" \ + "" "" + ++prg=' ++BEGIN { ++ v=1 ++ a=2 ++ print v (a) ++}' ++testing "awk 'v (a)' is not a function call, it is a concatenation" \ ++ "awk '$prg' 2>&1" \ ++ "12\n" \ ++ "" "" ++ ++prg='func f(){print"F"};func g(){print"G"};BEGIN{f(g(),g())}' ++testing "awk unused function args are evaluated" \ ++ "awk '$prg' 2>&1" \ ++ "G\nG\nF\n" \ ++ "" "" ++ + + optional DESKTOP + testing "awk hex const 1" "awk '{ print or(0xffffffff,1) }'" "4294967295\n" "" "\n" +@@ -352,19 +379,14 @@ testing "awk -e and ARGC" \ + "" + SKIP= + +-# The examples are in fact not valid awk programs (break/continue +-# can only be used inside loops). +-# But we do accept them outside of loops. +-# We had a bug with misparsing "break ; else" sequence. +-# Test that *that* bug is fixed, using simplest possible scripts: + testing "awk break" \ + "awk -f - 2>&1; echo \$?" \ +- "0\n" \ ++ "awk: -:1: 'break' not in a loop\n1\n" \ + "" \ + 'BEGIN { if (1) break; else a = 1 }' + testing "awk continue" \ + "awk -f - 2>&1; echo \$?" \ +- "0\n" \ ++ "awk: -:1: 'continue' not in a loop\n1\n" \ + "" \ + 'BEGIN { if (1) continue; else a = 1 }' + +@@ -383,6 +405,11 @@ testing "awk errors on missing delete arg" \ + "awk -e '{delete}' 2>&1" "awk: cmd. line:1: Too few arguments\n" "" "" + SKIP= + ++optional FEATURE_AWK_GNU_EXTENSIONS ++testing "awk printf('%c') can output NUL" \ ++ "awk '{printf(\"hello%c null\n\", 0)}'" "hello\0 null\n" "" "\n" ++SKIP= ++ + # testing "description" "command" "result" "infile" "stdin" + testing 'awk negative field access' \ + 'awk 2>&1 -- '\''{ $(-1) }'\' \ +@@ -413,4 +440,25 @@ testing 'awk $NF is empty' \ + '' \ + 'a=====123=' + ++testing "awk exit N propagates through END's exit" \ ++ "awk 'BEGIN { exit 42 } END { exit }'; echo \$?" \ ++ "42\n" \ ++ '' '' ++ ++testing "awk print + redirect" \ ++ "awk 'BEGIN { print \"STDERR %s\" >\"/dev/stderr\" }' 2>&1" \ ++ "STDERR %s\n" \ ++ '' '' ++ ++testing "awk \"cmd\" | getline" \ ++ "awk 'BEGIN { \"echo HELLO\" | getline; print }'" \ ++ "HELLO\n" \ ++ '' '' ++ ++# printf %% should print one % (had a bug where it didn't) ++testing 'awk printf %% prints one %' \ ++ "awk 'BEGIN { printf \"%%\n\" }'" \ ++ "%\n" \ ++ '' '' ++ + exit $FAILCOUNT +diff --git a/testsuite/printf.tests b/testsuite/printf.tests +index 34a65926e..050edef71 100755 +--- a/testsuite/printf.tests ++++ b/testsuite/printf.tests +@@ -79,6 +79,11 @@ testing "printf understands %Ld" \ + "-5\n""0\n" \ + "" "" + ++testing "printf understands %%" \ ++ "${bb}printf '%%\n' 2>&1; echo \$?" \ ++ "%\n""0\n" \ ++ "" "" ++ + testing "printf handles positive numbers for %d" \ + "${bb}printf '%d\n' 3 +3 ' 3' ' +3' 2>&1; echo \$?" \ + "3\n"\ +-- +2.33.0 + diff --git a/meta/recipes-core/busybox/busybox/0002-man-fix-segfault-in-man-1.patch b/meta/recipes-core/busybox/busybox/0002-man-fix-segfault-in-man-1.patch new file mode 100644 index 0000000000..4a930b7b6f --- /dev/null +++ b/meta/recipes-core/busybox/busybox/0002-man-fix-segfault-in-man-1.patch @@ -0,0 +1,30 @@ +From 4975cace9bf96bfde174f8bb5cc4068d2ea294d4 Mon Sep 17 00:00:00 2001 +From: Denys Vlasenko +Date: Tue, 15 Jun 2021 14:47:46 +0200 +Subject: [PATCH] man: fix segfault in "man 1" + +function old new delta +man_main 942 954 +12 + +Signed-off-by: Denys Vlasenko + +Upstream-Status: Backport [4d4fc5ca5ee4f] +CVE: CVE-2021-42373 +Signed-off-by: Chen Qi +--- + miscutils/man.c | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +diff --git a/miscutils/man.c b/miscutils/man.c +index 722f6641e..d319e8bba 100644 +--- a/miscutils/man.c ++++ b/miscutils/man.c +@@ -324,7 +324,7 @@ int man_main(int argc UNUSED_PARAM, char **argv) + + /* is 1st ARG a SECTION? */ + sec_list = conf_sec_list; +- if (is_section_name(conf_sec_list, *argv)) { ++ if (is_section_name(conf_sec_list, *argv) && argv[1]) { + /* yes */ + sec_list = *argv++; + } diff --git a/meta/recipes-core/busybox/busybox_1.33.2.bb b/meta/recipes-core/busybox/busybox_1.33.2.bb index 44c83ab83c..4a0d3b4556 100644 --- a/meta/recipes-core/busybox/busybox_1.33.2.bb +++ b/meta/recipes-core/busybox/busybox_1.33.2.bb @@ -48,6 +48,8 @@ SRC_URI = "https://busybox.net/downloads/busybox-${PV}.tar.bz2;name=tarball \ file://0001-sysctl-ignore-EIO-of-stable_secret-below-proc-sys-ne.patch \ file://0001-gen_build_files-Use-C-locale-when-calling-sed-on-glo.patch \ file://0001-mktemp-add-tmpdir-option.patch \ + file://0001-awk-fix-CVEs.patch \ + file://0002-man-fix-segfault-in-man-1.patch \ " SRC_URI_append_libc-musl = " file://musl.cfg " From patchwork Tue Jan 11 14:32:51 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Mittal, Anuj" X-Patchwork-Id: 2252 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8E942C4332F for ; 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X-IronPort-AV: E=McAfee;i="6200,9189,10223"; a="329839023" X-IronPort-AV: E=Sophos;i="5.88,279,1635231600"; d="scan'208";a="329839023" Received: from orsmga004.jf.intel.com ([10.7.209.38]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Jan 2022 06:33:15 -0800 X-IronPort-AV: E=Sophos;i="5.88,279,1635231600"; d="scan'208";a="623086456" Received: from wongkye-mobl3.gar.corp.intel.com (HELO anmitta2-mobl3.intel.com) ([10.213.137.187]) by orsmga004-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Jan 2022 06:33:13 -0800 From: Anuj Mittal To: openembedded-core@lists.openembedded.org Subject: [hardknott][PATCH 7/9] glibc: Backport fix for CVE-2021-43396 Date: Tue, 11 Jan 2022 22:32:51 +0800 Message-Id: <0b7e120bc3b40c0b150dd878d64bfe0ffdac79d9.1641911316.git.anuj.mittal@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: References: MIME-Version: 1.0 List-Id: X-Webhook-Received: from li982-79.members.linode.com [45.33.32.79] by aws-us-west-2-korg-lkml-1.web.codeaurora.org with HTTPS for ; Tue, 11 Jan 2022 14:33:16 -0000 X-Groupsio-URL: https://lists.openembedded.org/g/openembedded-core/message/160408 From: Pgowda Backport the fix for CVE-2021-43396. It is disputed that this is a security issue. (From OE-Core rev: e8de9b01c6b305b2498c5f942397a49ae2af0cde) Signed-off-by: pgowda Signed-off-by: Anuj Mittal --- .../glibc/glibc/0031-CVE-2021-43396.patch | 182 ++++++++++++++++++ meta/recipes-core/glibc/glibc_2.33.bb | 1 + 2 files changed, 183 insertions(+) create mode 100644 meta/recipes-core/glibc/glibc/0031-CVE-2021-43396.patch diff --git a/meta/recipes-core/glibc/glibc/0031-CVE-2021-43396.patch b/meta/recipes-core/glibc/glibc/0031-CVE-2021-43396.patch new file mode 100644 index 0000000000..72fd68b302 --- /dev/null +++ b/meta/recipes-core/glibc/glibc/0031-CVE-2021-43396.patch @@ -0,0 +1,182 @@ +From ff012870b2c02a62598c04daa1e54632e020fd7d Mon Sep 17 00:00:00 2001 +From: Nikita Popov +Date: Tue, 2 Nov 2021 13:21:42 +0500 +Subject: [PATCH] gconv: Do not emit spurious NUL character in ISO-2022-JP-3 + (bug 28524) + +Bugfix 27256 has introduced another issue: +In conversion from ISO-2022-JP-3 encoding, it is possible +to force iconv to emit extra NUL character on internal state reset. +To do this, it is sufficient to feed iconv with escape sequence +which switches active character set. +The simplified check 'data->__statep->__count != ASCII_set' +introduced by the aforementioned bugfix picks that case and +behaves as if '\0' character has been queued thus emitting it. + +To eliminate this issue, these steps are taken: +* Restore original condition +'(data->__statep->__count & ~7) != ASCII_set'. +It is necessary since bits 0-2 may contain +number of buffered input characters. +* Check that queued character is not NUL. +Similar step is taken for main conversion loop. + +Bundled test case follows following logic: +* Try to convert ISO-2022-JP-3 escape sequence +switching active character set +* Reset internal state by providing NULL as input buffer +* Ensure that nothing has been converted. + +Signed-off-by: Nikita Popov + +CVE: CVE-2021-43396 +Upstream-Status: Backport [ff012870b2c02a62598c04daa1e54632e020fd7d] +--- + iconvdata/Makefile | 5 +++- + iconvdata/bug-iconv15.c | 60 +++++++++++++++++++++++++++++++++++++++ + iconvdata/iso-2022-jp-3.c | 28 ++++++++++++------ + 3 files changed, 84 insertions(+), 9 deletions(-) + create mode 100644 iconvdata/bug-iconv15.c + +diff --git a/iconvdata/bug-iconv15.c b/iconvdata/bug-iconv15.c +new file mode 100644 +--- /dev/null ++++ b/iconvdata/bug-iconv15.c +@@ -0,0 +1,60 @@ ++/* Bug 28524: Conversion from ISO-2022-JP-3 with iconv ++ may emit spurious NUL character on state reset. ++ Copyright (C) The GNU Toolchain Authors. ++ This file is part of the GNU C Library. ++ ++ The GNU C Library is free software; you can redistribute it and/or ++ modify it under the terms of the GNU Lesser General Public ++ License as published by the Free Software Foundation; either ++ version 2.1 of the License, or (at your option) any later version. ++ ++ The GNU C Library is distributed in the hope that it will be useful, ++ but WITHOUT ANY WARRANTY; without even the implied warranty of ++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU ++ Lesser General Public License for more details. ++ ++ You should have received a copy of the GNU Lesser General Public ++ License along with the GNU C Library; if not, see ++ . */ ++ ++#include ++#include ++#include ++ ++static int ++do_test (void) ++{ ++ char in[] = "\x1b(I"; ++ char *inbuf = in; ++ size_t inleft = sizeof (in) - 1; ++ char out[1]; ++ char *outbuf = out; ++ size_t outleft = sizeof (out); ++ iconv_t cd; ++ ++ cd = iconv_open ("UTF8", "ISO-2022-JP-3"); ++ TEST_VERIFY_EXIT (cd != (iconv_t) -1); ++ ++ /* First call to iconv should alter internal state. ++ Now, JISX0201_Kana_set is selected and ++ state value != ASCII_set. */ ++ TEST_VERIFY (iconv (cd, &inbuf, &inleft, &outbuf, &outleft) != (size_t) -1); ++ ++ /* No bytes should have been added to ++ the output buffer at this point. */ ++ TEST_VERIFY (outbuf == out); ++ TEST_VERIFY (outleft == sizeof (out)); ++ ++ /* Second call shall emit spurious NUL character in unpatched glibc. */ ++ TEST_VERIFY (iconv (cd, NULL, NULL, &outbuf, &outleft) != (size_t) -1); ++ ++ /* No characters are expected to be produced. */ ++ TEST_VERIFY (outbuf == out); ++ TEST_VERIFY (outleft == sizeof (out)); ++ ++ TEST_VERIFY_EXIT (iconv_close (cd) != -1); ++ ++ return 0; ++} ++ ++#include +diff --git a/iconvdata/iso-2022-jp-3.c b/iconvdata/iso-2022-jp-3.c +--- a/iconvdata/iso-2022-jp-3.c ++++ b/iconvdata/iso-2022-jp-3.c +@@ -1,5 +1,6 @@ + /* Conversion module for ISO-2022-JP-3. + Copyright (C) 1998-2021 Free Software Foundation, Inc. ++ Copyright (C) The GNU Toolchain Authors. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper , 1998, + and Bruno Haible , 2002. +@@ -81,20 +82,31 @@ enum + the output state to the initial state. This has to be done during the + flushing. */ + #define EMIT_SHIFT_TO_INIT \ +- if (data->__statep->__count != ASCII_set) \ ++ if ((data->__statep->__count & ~7) != ASCII_set) \ + { \ + if (FROM_DIRECTION) \ + { \ +- if (__glibc_likely (outbuf + 4 <= outend)) \ ++ uint32_t ch = data->__statep->__count >> 6; \ ++ \ ++ if (__glibc_unlikely (ch != 0)) \ + { \ +- /* Write out the last character. */ \ +- *((uint32_t *) outbuf) = data->__statep->__count >> 6; \ +- outbuf += sizeof (uint32_t); \ +- data->__statep->__count = ASCII_set; \ ++ if (__glibc_likely (outbuf + 4 <= outend)) \ ++ { \ ++ /* Write out the last character. */ \ ++ put32u (outbuf, ch); \ ++ outbuf += 4; \ ++ data->__statep->__count &= 7; \ ++ data->__statep->__count |= ASCII_set; \ ++ } \ ++ else \ ++ /* We don't have enough room in the output buffer. */ \ ++ status = __GCONV_FULL_OUTPUT; \ + } \ + else \ +- /* We don't have enough room in the output buffer. */ \ +- status = __GCONV_FULL_OUTPUT; \ ++ { \ ++ data->__statep->__count &= 7; \ ++ data->__statep->__count |= ASCII_set; \ ++ } \ + } \ + else \ + { \ +diff --git a/iconvdata/Makefile b/iconvdata/Makefile +--- a/iconvdata/Makefile ++++ b/iconvdata/Makefile +@@ -1,4 +1,5 @@ + # Copyright (C) 1997-2021 Free Software Foundation, Inc. ++# Copyright (C) The GNU Toolchain Authors. + # This file is part of the GNU C Library. + + # The GNU C Library is free software; you can redistribute it and/or +@@ -74,7 +75,7 @@ ifeq (yes,$(build-shared)) + tests = bug-iconv1 bug-iconv2 tst-loading tst-e2big tst-iconv4 bug-iconv4 \ + tst-iconv6 bug-iconv5 bug-iconv6 tst-iconv7 bug-iconv8 bug-iconv9 \ + bug-iconv10 bug-iconv11 bug-iconv12 tst-iconv-big5-hkscs-to-2ucs4 \ +- bug-iconv13 bug-iconv14 ++ bug-iconv13 bug-iconv14 bug-iconv15 + ifeq ($(have-thread-library),yes) + tests += bug-iconv3 + endif +@@ -324,6 +325,8 @@ $(objpfx)bug-iconv12.out: $(objpfx)gconv + $(addprefix $(objpfx),$(modules.so)) + $(objpfx)bug-iconv14.out: $(objpfx)gconv-modules \ + $(addprefix $(objpfx),$(modules.so)) ++$(objpfx)bug-iconv15.out: $(addprefix $(objpfx), $(gconv-modules)) \ ++ $(addprefix $(objpfx),$(modules.so)) + + $(objpfx)iconv-test.out: run-iconv-test.sh $(objpfx)gconv-modules \ + $(addprefix $(objpfx),$(modules.so)) \ diff --git a/meta/recipes-core/glibc/glibc_2.33.bb b/meta/recipes-core/glibc/glibc_2.33.bb index a1e9eb3a16..b7736359b1 100644 --- a/meta/recipes-core/glibc/glibc_2.33.bb +++ b/meta/recipes-core/glibc/glibc_2.33.bb @@ -56,6 +56,7 @@ SRC_URI = "${GLIBC_GIT_URI};branch=${SRCBRANCH};name=glibc \ file://0028-readlib-Add-OECORE_KNOWN_INTERPRETER_NAMES-to-known-.patch \ file://0029-wordsize.h-Unify-the-header-between-arm-and-aarch64.patch \ file://0030-powerpc-Do-not-ask-compiler-for-finding-arch.patch \ + file://0031-CVE-2021-43396.patch \ " S = "${WORKDIR}/git" B = "${WORKDIR}/build-${TARGET_SYS}" From patchwork Tue Jan 11 14:32:52 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Mittal, Anuj" X-Patchwork-Id: 2256 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 95420C4167E for ; Tue, 11 Jan 2022 14:33:19 +0000 (UTC) Received: from mga05.intel.com (mga05.intel.com [192.55.52.43]) by mx.groups.io with SMTP id smtpd.web12.7795.1641911594309733958 for ; Tue, 11 Jan 2022 06:33:19 -0800 Authentication-Results: mx.groups.io; dkim=fail reason="unable to parse pub key" header.i=@intel.com header.s=intel header.b=nhGPFC+Y; spf=pass (domain: intel.com, ip: 192.55.52.43, mailfrom: anuj.mittal@intel.com) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1641911598; x=1673447598; h=from:to:subject:date:message-id:in-reply-to:references: mime-version:content-transfer-encoding; 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Tue, 11 Jan 2022 14:33:19 -0000 X-Groupsio-URL: https://lists.openembedded.org/g/openembedded-core/message/160412 From: Pgowda This patch backports the AArch32 support for Arm's Neoverse N2 CPU. Upstream-Status: Backport [https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff;h=d7e8411f6a333d4054894ad3b23f23415a525230] Signed-off-by: pgowda Signed-off-by: Anuj Mittal --- meta/recipes-devtools/gcc/gcc-10.2.inc | 1 + .../gcc/0038-arm-neoverse-n2-support.patch | 88 +++++++++++++++++++ 2 files changed, 89 insertions(+) create mode 100644 meta/recipes-devtools/gcc/gcc/0038-arm-neoverse-n2-support.patch diff --git a/meta/recipes-devtools/gcc/gcc-10.2.inc b/meta/recipes-devtools/gcc/gcc-10.2.inc index 656c43258c..e7e3395c55 100644 --- a/meta/recipes-devtools/gcc/gcc-10.2.inc +++ b/meta/recipes-devtools/gcc/gcc-10.2.inc @@ -74,6 +74,7 @@ SRC_URI = "\ file://0002-CVE-2021-35465.patch \ file://0003-CVE-2021-35465.patch \ file://0004-CVE-2021-35465.patch \ + file://0038-arm-neoverse-n2-support.patch \ file://0039-arm64-neoverse-n2-support.patch \ file://0001-CVE-2021-42574.patch \ file://0002-CVE-2021-42574.patch \ diff --git a/meta/recipes-devtools/gcc/gcc/0038-arm-neoverse-n2-support.patch b/meta/recipes-devtools/gcc/gcc/0038-arm-neoverse-n2-support.patch new file mode 100644 index 0000000000..3e42266b81 --- /dev/null +++ b/meta/recipes-devtools/gcc/gcc/0038-arm-neoverse-n2-support.patch @@ -0,0 +1,88 @@ +From d7e8411f6a333d4054894ad3b23f23415a525230 Mon Sep 17 00:00:00 2001 +From: Alex Coplan +Date: Fri, 2 Oct 2020 16:06:15 +0100 +Subject: [PATCH] arm: Add support for Neoverse N2 CPU + +This patch backports the AArch32 support for Arm's Neoverse N2 CPU to +GCC 10. + +gcc/ChangeLog: + + * config/arm/arm-cpus.in (neoverse-n2): New. + * config/arm/arm-tables.opt: Regenerate. + * config/arm/arm-tune.md: Regenerate. + * doc/invoke.texi: Document support for Neoverse N2. + +Upstream-Status: Backport [https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff;h=d7e8411f6a333d4054894ad3b23f23415a525230] + +Signed-off-by: pgowda +--- + gcc/config/arm/arm-cpus.in | 12 ++++++++++++ + gcc/config/arm/arm-tables.opt | 3 +++ + gcc/config/arm/arm-tune.md | 5 +++-- + gcc/doc/invoke.texi | 6 +++--- + 4 files changed, 21 insertions(+), 5 deletions(-) + +diff --git a/gcc/config/arm/arm-cpus.in b/gcc/config/arm/arm-cpus.in +--- a/gcc/config/arm/arm-cpus.in 2021-12-20 20:24:59.912159845 -0800 ++++ b/gcc/config/arm/arm-cpus.in 2021-12-20 21:00:04.417003845 -0800 +@@ -1481,6 +1481,18 @@ begin cpu cortex-a76.cortex-a55 + costs cortex_a57 + end cpu cortex-a76.cortex-a55 + ++# Armv8.5 A-profile Architecture Processors ++begin cpu neoverse-n2 ++ cname neoversen2 ++ tune for cortex-a57 ++ tune flags LDSCHED ++ architecture armv8.5-a+fp16+bf16+i8mm ++ option crypto add FP_ARMv8 CRYPTO ++ costs cortex_a57 ++ vendor 41 ++ part 0xd49 ++end cpu neoverse-n2 ++ + # V8 M-profile implementations. + begin cpu cortex-m23 + cname cortexm23 +diff --git a/gcc/config/arm/arm-tables.opt b/gcc/config/arm/arm-tables.opt +--- a/gcc/config/arm/arm-tables.opt 2020-07-22 23:35:54.688795958 -0700 ++++ b/gcc/config/arm/arm-tables.opt 2021-12-20 21:00:04.421003776 -0800 +@@ -253,6 +253,9 @@ EnumValue + Enum(processor_type) String(cortex-m23) Value( TARGET_CPU_cortexm23) + + EnumValue ++Enum(processor_type) String(neoverse-n2) Value( TARGET_CPU_neoversen2) ++ ++EnumValue + Enum(processor_type) String(cortex-m33) Value( TARGET_CPU_cortexm33) + + EnumValue +diff --git a/gcc/config/arm/arm-tune.md b/gcc/config/arm/arm-tune.md +--- a/gcc/config/arm/arm-tune.md 2020-07-22 23:35:54.684795913 -0700 ++++ b/gcc/config/arm/arm-tune.md 2021-12-20 21:02:44.630260284 -0800 +@@ -46,6 +46,6 @@ + cortexa73cortexa53,cortexa55,cortexa75, + cortexa76,cortexa76ae,cortexa77, + neoversen1,cortexa75cortexa55,cortexa76cortexa55, +- cortexm23,cortexm33,cortexm35p, +- cortexm55,cortexr52" ++ neoversen2,cortexm23,cortexm33, ++ cortexm35p,cortexm55,cortexr52" + (const (symbol_ref "((enum attr_tune) arm_tune)"))) +diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi +--- a/gcc/doc/invoke.texi 2021-12-20 20:24:59.916159782 -0800 ++++ b/gcc/doc/invoke.texi 2021-12-20 21:03:41.337290704 -0800 +@@ -18857,9 +18857,9 @@ Permissible names are: @samp{arm7tdmi}, + @samp{cortex-m35p}, @samp{cortex-m55}, + @samp{cortex-m1.small-multiply}, @samp{cortex-m0.small-multiply}, + @samp{cortex-m0plus.small-multiply}, @samp{exynos-m1}, @samp{marvell-pj4}, +-@samp{neoverse-n1}, @samp{xscale}, @samp{iwmmxt}, @samp{iwmmxt2}, +-@samp{ep9312}, @samp{fa526}, @samp{fa626}, @samp{fa606te}, @samp{fa626te}, +-@samp{fmp626}, @samp{fa726te}, @samp{xgene1}. ++@samp{neoverse-n1}, @samp{neoverse-n2}, @samp{xscale}, @samp{iwmmxt}, ++@samp{iwmmxt2}, @samp{ep9312}, @samp{fa526}, @samp{fa626}, @samp{fa606te}, ++@samp{fa626te}, @samp{fmp626}, @samp{fa726te}, @samp{xgene1}. + + Additionally, this option can specify that GCC should tune the performance + of the code for a big.LITTLE system. Permissible names are: From patchwork Tue Jan 11 14:32:53 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Mittal, Anuj" X-Patchwork-Id: 2254 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9943EC43219 for ; Tue, 11 Jan 2022 14:33:20 +0000 (UTC) Received: from mga05.intel.com (mga05.intel.com [192.55.52.43]) by mx.groups.io with SMTP id smtpd.web10.7912.1641911599396811250 for ; Tue, 11 Jan 2022 06:33:19 -0800 Authentication-Results: mx.groups.io; dkim=fail reason="unable to parse pub key" header.i=@intel.com header.s=intel header.b=RcGXj/4a; spf=pass (domain: intel.com, ip: 192.55.52.43, mailfrom: anuj.mittal@intel.com) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1641911599; x=1673447599; h=from:to:subject:date:message-id:in-reply-to:references: mime-version:content-transfer-encoding; bh=/IDBcixvwByMo+WF71vm8gxRRDL+U9XFjkVo4+waiBY=; b=RcGXj/4aaMbWw1bhkon4kHui6rocuEbjWKrIPUMzxooavz//D+C+2BRg vgEKKKZ+255VbIFpTGtnh1BruMxmj+3susugNtPUs3kjqfI3CH2IKnFdL OVn73NseLOD07FgWx3AQ6hRkJdU6Ii3iYvMifM9dgmsqHr+D/6aMCoPQw 2gajp6EmMtqXx3i7HP3AwwQIfdkSZEAgFAfzpVfLspb5sy1y1dtl+IeSI uniQ+5ih8sQB/5pvFgFDicaAZtErJLIbathDQh/sUxH4JNjszSuoWB8OI MGtdAbmnbZtoZjoQjp7UcLG02yP9+YhMFNr6A0yaK1jVhXRUWUjO4XQ6g w==; X-IronPort-AV: E=McAfee;i="6200,9189,10223"; a="329839041" X-IronPort-AV: E=Sophos;i="5.88,279,1635231600"; d="scan'208";a="329839041" Received: from orsmga004.jf.intel.com ([10.7.209.38]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Jan 2022 06:33:18 -0800 X-IronPort-AV: E=Sophos;i="5.88,279,1635231600"; d="scan'208";a="623086472" Received: from wongkye-mobl3.gar.corp.intel.com (HELO anmitta2-mobl3.intel.com) ([10.213.137.187]) by orsmga004-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Jan 2022 06:33:17 -0800 From: Anuj Mittal To: openembedded-core@lists.openembedded.org Subject: [hardknott][PATCH 9/9] python3-pyelftools: fix the override syntax Date: Tue, 11 Jan 2022 22:32:53 +0800 Message-Id: <7e569186820163d731cbb14f8c25ce6a2cc45dc9.1641911316.git.anuj.mittal@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: References: MIME-Version: 1.0 List-Id: X-Webhook-Received: from li982-79.members.linode.com [45.33.32.79] by aws-us-west-2-korg-lkml-1.web.codeaurora.org with HTTPS for ; Tue, 11 Jan 2022 14:33:20 -0000 X-Groupsio-URL: https://lists.openembedded.org/g/openembedded-core/message/160413 An earlier patch cherry-picked from master used : for override. Change it to use _ for hardknott. Signed-off-by: Anuj Mittal --- meta/recipes-devtools/python/python3-pyelftools_0.27.bb | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/meta/recipes-devtools/python/python3-pyelftools_0.27.bb b/meta/recipes-devtools/python/python3-pyelftools_0.27.bb index e2d0e18277..f8b9d420a5 100644 --- a/meta/recipes-devtools/python/python3-pyelftools_0.27.bb +++ b/meta/recipes-devtools/python/python3-pyelftools_0.27.bb @@ -12,4 +12,4 @@ inherit pypi setuptools3 BBCLASSEXTEND = "native" -RDEPENDS:${PN} += "${PYTHON_PN}-debugger ${PYTHON_PN}-pprint" +RDEPENDS_${PN} += "${PYTHON_PN}-debugger ${PYTHON_PN}-pprint"