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bf9688e623
When passed a pointer to a zero-sized struct, the access attribute without the third argument misleads -Wstringop-overflow diagnostics to think that a function is writing 1 byte into the zero-sized structs. The attribute doesn't add that much value in this context, so drop it completely for _FORTIFY_SOURCE=3. Resolves: BZ #31383 Signed-off-by: Siddhesh Poyarekar <siddhesh@sourceware.org> Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
317 lines
6.9 KiB
Makefile
317 lines
6.9 KiB
Makefile
# Copyright (C) 1992-2024 Free Software Foundation, Inc.
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# This file is part of the GNU C Library.
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# The GNU C Library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2.1 of the License, or (at your option) any later version.
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# The GNU C Library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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# You should have received a copy of the GNU Lesser General Public
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# License along with the GNU C Library; if not, see
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# <https://www.gnu.org/licenses/>.
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#
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# Sub-makefile for I/O portion of the library.
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#
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subdir := io
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include ../Makeconfig
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headers := \
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bits/fcntl.h \
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bits/fcntl2.h \
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bits/poll.h \
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bits/poll2.h \
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bits/stat.h \
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bits/statfs.h \
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bits/statvfs.h \
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bits/statx-generic.h \
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bits/statx.h \
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bits/types/struct_statx.h \
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bits/types/struct_statx_timestamp.h \
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fcntl.h \
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fts.h \
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ftw.h \
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poll.h \
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sys/fcntl.h \
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sys/poll.h \
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sys/sendfile.h \
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sys/stat.h \
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sys/statfs.h \
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sys/statvfs.h \
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sys/vfs.h \
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utime.h \
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# headers
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routines := \
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access \
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chdir \
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chmod \
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chown \
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close \
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close_range \
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closefrom \
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copy_file_range \
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creat \
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creat64 \
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dup \
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dup2 \
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dup3 \
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euidaccess \
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faccessat \
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fchdir \
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fchmod \
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fchmodat \
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fchown \
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fchownat \
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fcntl \
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fcntl64 \
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file_change_detection \
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flock \
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fstat \
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fstat64 \
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fstatat \
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fstatat64 \
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fstatfs \
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fstatfs64 \
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fstatvfs \
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fstatvfs64 \
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fts \
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fts64 \
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fts64-time64 \
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ftw \
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ftw64 \
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ftw64-time64 \
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futimens \
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getcwd \
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getdirname \
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getwd \
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isatty \
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lchmod \
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lchown \
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link \
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linkat \
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lockf \
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lockf64 \
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lseek \
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lseek64 \
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lstat \
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lstat64 \
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mkdir \
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mkdirat \
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mkfifo \
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mkfifoat \
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mknod \
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mknodat \
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open \
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open64 \
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open64_2 \
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open_2 \
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openat \
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openat64 \
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openat64_2 \
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openat_2 \
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pipe \
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pipe2 \
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poll \
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posix_fadvise \
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posix_fadvise64 \
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posix_fallocate \
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posix_fallocate64 \
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ppoll \
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read \
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readlink \
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readlinkat \
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rmdir \
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sendfile \
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sendfile64 \
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stat \
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stat64 \
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statfs \
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statfs64 \
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statvfs \
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statvfs64 \
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statx \
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symlink \
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symlinkat \
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ttyname \
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ttyname_r \
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umask \
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unlink \
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unlinkat \
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utime \
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utimensat \
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write \
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# routines
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# Exclude fortified routines from being built with _FORTIFY_SOURCE
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routines_no_fortify += \
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getcwd \
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getwd \
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open \
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open64 \
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openat \
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openat64 \
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poll \
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ppoll \
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read \
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readlink \
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readlinkat \
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ttyname_r \
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# routines_no_fortify
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others := \
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pwd \
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# others
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test-srcs := \
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ftwtest \
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ftwtest-time64 \
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# test-srcs
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tests := \
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bug-ftw1 \
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bug-ftw2 \
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bug-ftw3 \
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bug-ftw4 \
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bug-ftw5 \
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test-lfs \
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test-stat \
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test-stat2 \
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test-utime \
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tst-close_range \
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tst-closefrom \
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tst-copy_file_range \
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tst-faccessat \
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tst-fchmodat \
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tst-fchownat \
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tst-fcntl \
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tst-fcntl-lock \
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tst-fcntl-lock-lfs \
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tst-fstatat \
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tst-fts \
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tst-fts-lfs \
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tst-ftw-bz26353 \
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tst-ftw-bz28126 \
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tst-ftw-lnk \
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tst-futimens \
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tst-futimes \
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tst-futimesat \
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tst-getcwd \
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tst-getcwd-abspath \
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tst-lchmod \
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tst-linkat \
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tst-lockf \
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tst-lutimes \
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tst-mkdirat \
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tst-mkfifoat \
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tst-mknodat \
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tst-open-tmpfile \
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tst-openat \
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tst-posix_fallocate \
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tst-posix_fallocate64 \
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tst-read-zero \
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tst-readlinkat \
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tst-renameat \
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tst-stat \
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tst-stat-lfs \
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tst-statvfs \
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tst-symlinkat \
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tst-ttyname_r \
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tst-unlinkat \
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tst-utime \
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tst-utimensat \
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tst-utimes \
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# tests
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tests-time64 := \
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tst-fcntl-time64 \
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tst-fts-time64 \
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tst-futimens-time64 \
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tst-futimes-time64\
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tst-futimesat-time64 \
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tst-lchmod-time64 \
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tst-lutimes-time64 \
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tst-stat-time64 \
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tst-utime-time64 \
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tst-utimensat-time64 \
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tst-utimes-time64 \
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# tests-time64
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# Likewise for statx, but we do not need static linking here.
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tests-internal += \
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tst-file_change_detection \
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tst-statx \
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# tests-internal
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tests-static += \
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tst-statx \
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# tests-static
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ifeq ($(run-built-tests),yes)
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tests-special += \
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$(objpfx)ftwtest-time64.out \
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$(objpfx)ftwtest.out \
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# tests-special
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endif
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include ../Rules
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CFLAGS-open.c += -fexceptions -fasynchronous-unwind-tables $(config-cflags-wno-ignored-attributes)
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CFLAGS-openat.c += $(config-cflags-wno-ignored-attributes)
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CFLAGS-open64.c += -fexceptions -fasynchronous-unwind-tables
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CFLAGS-creat.c += -fexceptions -fasynchronous-unwind-tables
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CFLAGS-creat64.c += -fexceptions -fasynchronous-unwind-tables
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CFLAGS-fcntl.c += -fexceptions -fasynchronous-unwind-tables $(config-cflags-wno-ignored-attributes)
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CFLAGS-fcntl64.c += -fexceptions -fasynchronous-unwind-tables $(config-cflags-wno-ignored-attributes)
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CFLAGS-poll.c += -fexceptions -fasynchronous-unwind-tables
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CFLAGS-ppoll.c += -fexceptions -fasynchronous-unwind-tables
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CFLAGS-lockf.c += -fexceptions -fasynchronous-unwind-tables
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CFLAGS-lockf64.c += -fexceptions -fasynchronous-unwind-tables $(config-cflags-wno-ignored-attributes)
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CFLAGS-statfs.c += -fexceptions
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CFLAGS-fstatfs.c += -fexceptions
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CFLAGS-statvfs.c += -fexceptions $(config-cflags-wno-ignored-attributes)
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CFLAGS-fstatvfs.c += -fexceptions $(config-cflags-wno-ignored-attributes)
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CFLAGS-fts.c += -Wno-uninitialized $(uses-callbacks) -fexceptions
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CFLAGS-fts64.c += -Wno-uninitialized $(uses-callbacks) -fexceptions
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CFLAGS-fts64-time64.c += -Wno-uninitialized $(uses-callbacks) -fexceptions
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CFLAGS-ftw.c += $(uses-callbacks) -fexceptions
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CFLAGS-ftw64.c += $(uses-callbacks) -fexceptions
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CFLAGS-ftw64-time64.c += $(uses-callbacks) -fexceptions
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CFLAGS-posix_fallocate.c += -fexceptions
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CFLAGS-posix_fallocate64.c += -fexceptions
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CFLAGS-fallocate.c += -fexceptions
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CFLAGS-fallocate64.c += -fexceptions
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CFLAGS-read.c += -fexceptions -fasynchronous-unwind-tables $(config-cflags-wno-ignored-attributes)
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CFLAGS-write.c += -fexceptions -fasynchronous-unwind-tables $(config-cflags-wno-ignored-attributes)
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CFLAGS-close.c += -fexceptions -fasynchronous-unwind-tables
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CFLAGS-lseek64.c += $(config-cflags-wno-ignored-attributes)
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CFLAGS-tst-read-zero.c += $(no-fortify-source),-D_FORTIFY_SOURCE=$(supported-fortify)
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CFLAGS-test-stat.c += -D_FILE_OFFSET_BITS=64 -D_LARGEFILE64_SOURCE
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CFLAGS-test-lfs.c += -D_LARGEFILE64_SOURCE
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CFLAGS-tst-lchmod.c += -D_FILE_OFFSET_BITS=64
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test-stat2-ARGS = Makefile . $(objpfx)test-stat2
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tst-statvfs-ARGS = $(objpfx)tst-statvfs tst-statvfs.c /tmp
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tst-open-tmpfile-ARGS = --test-dir=$(objpfx)
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CFLAGS-ftwtest-time64.c += -D_TIME_BITS=64 -D_FILE_OFFSET_BITS=64
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ifeq ($(run-built-tests),yes)
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$(objpfx)ftwtest.out: ftwtest-sh $(objpfx)ftwtest
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$(SHELL) $< $(common-objpfx) '$(test-program-cmd)' > $@; \
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$(evaluate-test)
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$(objpfx)ftwtest-time64.out: ftwtest-sh $(objpfx)ftwtest-time64
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$(SHELL) $< $(common-objpfx) '$(test-program-cmd)' > $@; \
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$(evaluate-test)
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endif
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