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	FSF:1.1.1;
locks; strict;
comment	@# @;


1.1
date	2023.07.30.05.21.28;	author mrg;	state Exp;
branches
	1.1.1.1;
next	;
commitid	tk6nV4mbc9nVEMyE;

1.1.1.1
date	2023.07.30.05.21.28;	author mrg;	state Exp;
branches;
next	1.1.1.2;
commitid	tk6nV4mbc9nVEMyE;

1.1.1.2
date	2025.09.13.23.45.57;	author mrg;	state Exp;
branches;
next	;
commitid	KwhwN4krNWa6XBaG;


desc
@@


1.1
log
@Initial revision
@
text
@#!/bin/sh

# Copyright (C) 2020 Free Software Foundation, Inc.
#
# This file is part of GCC.
#
# GCC is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3, or (at your option)
# any later version.
#
# GCC 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GCC; see the file COPYING.  If not, write to
# the Free Software Foundation, 51 Franklin Street, Fifth Floor,
# Boston, MA 02110-1301, USA.

COMMIT_MSG_FILE=$1
COMMIT_SOURCE=$2
SHA1=$3

# We might be on a branch before the file was added.
if ! [ -x contrib/mklog.py ]; then exit 0; fi

# Can't do anything if $COMMIT_MSG_FILE isn't a file.
if ! [ -f "$COMMIT_MSG_FILE" ]; then exit 0; fi

# Don't do anything unless requested to.
if [ -z "$GCC_FORCE_MKLOG" ]; then exit 0; fi

if [ -z "$COMMIT_SOURCE" ] || [ $COMMIT_SOURCE = template ]; then
    # No source or "template" means new commit.
    cmd="diff --cached"

elif [ $COMMIT_SOURCE = message ]; then
    # "message" means -m; assume a new commit if there are any changes staged.
    if ! git diff --cached --quiet; then
	cmd="diff --cached"
    else
	cmd="diff --cached HEAD^"
    fi

elif [ $COMMIT_SOURCE = commit ]; then
    # The message of an existing commit.  If it's HEAD, assume --amend;
    # otherwise, assume a new commit with -C.
    if [ $SHA1 = HEAD ]; then
	cmd="diff --cached HEAD^"
	if [ "$(git config gcc-config.mklog-hook-type)" = "smart-amend" ]; then
	    # Check if the existing message still describes the staged changes.
	    f=$(mktemp /tmp/git-commit.XXXXXX) || exit 1
	    git log -1 --pretty=email HEAD > $f
	    printf '\n---\n\n' >> $f
	    git $cmd >> $f
	    if contrib/gcc-changelog/git_email.py "$f" >/dev/null 2>&1; then
		# Existing commit message is still OK for amended commit.
		rm $f
		exit 0
	    fi
	    rm $f
	fi
    else
	cmd="diff --cached"
    fi
else
    # Do nothing for merge or squash.
    exit 0
fi

# Save diff to a file if requested.
DIFF_FILE=$(git config gcc-config.diff-file)
if ! [ -z "$DIFF_FILE" ]; then
    tee="tee $DIFF_FILE"
else
    tee="cat"
fi

git $cmd | $tee | git gcc-mklog $GCC_MKLOG_ARGS -c "$COMMIT_MSG_FILE"
@


1.1.1.1
log
@initial import of GCC 12.3.0.

major changes in GCC 11 included:

- The default mode for C++ is now -std=gnu++17 instead of -std=gnu++14.
- When building GCC itself, the host compiler must now support C++11,
  rather than C++98.
- Some short options of the gcov tool have been renamed: -i to -j and
  -j to -H.
- ThreadSanitizer improvements.
- Introduce Hardware-assisted AddressSanitizer support.
- For targets that produce DWARF debugging information GCC now defaults
  to DWARF version 5. This can produce up to 25% more compact debug
  information compared to earlier versions.
- Many optimisations.
- The existing malloc attribute has been extended so that it can be
  used to identify allocator/deallocator API pairs. A pair of new
  -Wmismatched-dealloc and -Wmismatched-new-delete warnings are added.
- Other new warnings:
  -Wsizeof-array-div, enabled by -Wall, warns about divisions of two
    sizeof operators when the first one is applied to an array and the
    divisor does not equal the size of the array element.
  -Wstringop-overread, enabled by default, warns about calls to string
    functions reading past the end of the arrays passed to them as
    arguments.
  -Wtsan, enabled by default, warns about unsupported features in
    ThreadSanitizer (currently std::atomic_thread_fence).
- Enchanced warnings:
  -Wfree-nonheap-object detects many more instances of calls to
    deallocation functions with pointers not returned from a dynamic
    memory allocation function.
  -Wmaybe-uninitialized diagnoses passing pointers or references to
    uninitialized memory to functions taking const-qualified arguments.
  -Wuninitialized detects reads from uninitialized dynamically
    allocated memory.
  -Warray-parameter warns about functions with inconsistent array forms.
  -Wvla-parameter warns about functions with inconsistent VLA forms.
- Several new features from the upcoming C2X revision of the ISO C
  standard are supported with -std=c2x and -std=gnu2x.
- Several C++20 features have been implemented.
- The C++ front end has experimental support for some of the upcoming
  C++23 draft.
- Several new C++ warnings.
- Enhanced Arm, AArch64, x86, and RISC-V CPU support.
- The implementation of how program state is tracked within
  -fanalyzer has been completely rewritten with many enhancements.

see https://gcc.gnu.org/gcc-11/changes.html for a full list.

major changes in GCC 12 include:

- An ABI incompatibility between C and C++ when passing or returning
  by value certain aggregates containing zero width bit-fields has
  been discovered on various targets. x86-64, ARM and AArch64
  will always ignore them (so there is a C ABI incompatibility
  between GCC 11 and earlier with GCC 12 or later), PowerPC64 ELFv2
  always take them into account (so there is a C++ ABI
  incompatibility, GCC 4.4 and earlier compatible with GCC 12 or
  later, incompatible with GCC 4.5 through GCC 11). RISC-V has
  changed the handling of these already starting with GCC 10. As
  the ABI requires, MIPS takes them into account handling function
  return values so there is a C++ ABI incompatibility with GCC 4.5
  through 11.
- STABS: Support for emitting the STABS debugging format is
  deprecated and will be removed in the next release. All ports now
  default to emit DWARF (version 2 or later) debugging info or are
  obsoleted.
- Vectorization is enabled at -O2 which is now equivalent to the
  original -O2 -ftree-vectorize -fvect-cost-model=very-cheap.
- GCC now supports the ShadowCallStack sanitizer.
- Support for __builtin_shufflevector compatible with the clang
  language extension was added.
- Support for attribute unavailable was added.
- Support for __builtin_dynamic_object_size compatible with the
  clang language extension was added.
- New warnings:
  -Wbidi-chars warns about potentially misleading UTF-8
    bidirectional control characters.
  -Warray-compare warns about comparisons between two operands of
    array type.
- Some new features from the upcoming C2X revision of the ISO C
  standard are supported with -std=c2x and -std=gnu2x.
- Several C++23 features have been implemented.
- Many C++ enhancements across warnings and -f options.

see https://gcc.gnu.org/gcc-12/changes.html for a full list.
@
text
@@


1.1.1.2
log
@initial import of GCC 14.3.0.

major changes in GCC 13:
- improved sanitizer
- zstd debug info compression
- LTO improvements
- SARIF based diagnostic support
- new warnings: -Wxor-used-as-pow, -Wenum-int-mismatch, -Wself-move,
  -Wdangling-reference
- many new -Wanalyzer* specific warnings
- enhanced warnings: -Wpessimizing-move, -Wredundant-move
- new attributes to mark file descriptors, c++23 "assume"
- several C23 features added
- several C++23 features added
- many new features for Arm, x86, RISC-V

major changes in GCC 14:
- more strict C99 or newer support
- ia64* marked deprecated (but seemingly still in GCC 15.)
- several new hardening features
- support for "hardbool", which can have user supplied values of true/false
- explicit support for stack scrubbing upon function exit
- better auto-vectorisation support
- added clang-compatible __has_feature and __has_extension
- more C23, including -std=c23
- several C++26 features added
- better diagnostics in C++ templates
- new warnings: -Wnrvo, Welaborated-enum-base
- many new features for Arm, x86, RISC-V
- possible ABI breaking change for SPARC64 and small structures with arrays
  of floats.
@
text
@d3 1
a3 1
# Copyright (C) 2020-2024 Free Software Foundation, Inc.
d35 1
a35 1
if [ -z "$COMMIT_SOURCE" ] || [ "$COMMIT_SOURCE" = template ]; then
d39 1
a39 1
elif [ "$COMMIT_SOURCE" = message ]; then
d47 1
a47 1
elif [ "$COMMIT_SOURCE" = commit ]; then
d50 1
a50 1
    if [ "$SHA1" = HEAD ]; then
d55 3
a57 3
	    git log -1 --pretty=email HEAD > "$f"
	    printf '\n---\n\n' >> "$f"
	    git $cmd >> "$f"
d60 1
a60 1
		rm "$f"
d63 1
a63 1
	    rm "$f"
d75 1
a75 1
if [ -n "$DIFF_FILE" ]; then
d81 1
a81 1
git $cmd | $tee | git gcc-mklog -c "$COMMIT_MSG_FILE"
@