mirror/glibc
2
0
Fork 0
mirror of git://sourceware.org/git/glibc.git synced 2025-04-06 14:10:30 +08:00
Code Issues Packages Projects Releases Wiki Activity
glibc/misc
History
Jonathan Wakely 8a9a593115 Add alloc_align attribute to memalign et al 
GCC 4.9.0 added the alloc_align attribute to say that a function
argument specifies the alignment of the returned pointer. Clang supports
the attribute too. Using the attribute can allow a compiler to generate
better code if it knows the returned pointer has a minimum alignment.
See https://gcc.gnu.org/PR60092 for more details.

GCC implicitly knows the semantics of aligned_alloc and posix_memalign,
but not the obsolete memalign. As a result, GCC generates worse code
when memalign is used, compared to aligned_alloc.  Clang knows about
aligned_alloc and memalign, but not posix_memalign.

This change adds a new __attribute_alloc_align__ macro to <sys/cdefs.h>
and then uses it on memalign (where it helps GCC) and aligned_alloc
(where GCC and Clang already know the semantics, but it doesn't hurt)
and xposix_memalign. It can't be used on posix_memalign because that
doesn't return a pointer (the allocated pointer is returned via a void**
parameter instead).

Unlike the alloc_size attribute, alloc_align only allows a single
argument. That means the new __attribute_alloc_align__ macro doesn't
really need to be used with double parentheses to protect a comma
between its arguments. For consistency with __attribute_alloc_size__
this patch defines it the same way, so that double parentheses are
required.

Signed-off-by: Jonathan Wakely <jwakely@redhat.com>

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Tested-by: Carlos O'Donell <carlos@redhat.com>
2021-10-21 00:19:20 +01:00
..
bits
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
sys
Add alloc_align attribute to memalign et al
2021-10-21 00:19:20 +01:00
acct.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
allocate_once.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
ar.h
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
brk.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
bug18240.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
bug-hsearch1.c
…
chflags.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
chroot.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
daemon.c
Remove internal usage of extensible stat functions
2020-09-11 14:35:32 -03:00
dirname.c
Remove "Contributed by" lines
2021-09-03 22:06:44 +05:30
efgcvt_r-template.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
efgcvt_r.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
efgcvt-dbl-macros.h
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
efgcvt-ldbl-macros.h
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
efgcvt-template.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
efgcvt.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
err.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
err.h
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
error.c
nptl: Move pthread_setcancelstate into libc
2021-04-21 19:49:50 +02:00
error.h
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
fchflags.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
fd_to_filename.c
misc: use _fitoa_word to implement __fd_to_filename.
2021-05-07 13:54:36 -03:00
fdatasync.c
Add hidden prototypes for fsync, fdatasync
2021-06-22 09:51:14 +02:00
fgetxattr.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
flistxattr.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
fremovexattr.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
fsetxattr.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
fstab.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
fstab.h
Remove pre-ISO C support
2012-01-07 23:57:22 -05:00
fsync.c
Add hidden prototypes for fsync, fdatasync
2021-06-22 09:51:14 +02:00
ftruncate64.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
ftruncate.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
futimes.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
futimesat.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
getauxval.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
getclktck.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
getdomain.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
getdtsz.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
gethostid.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
gethostname.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
getloadavg.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
getpagesize.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
getpass.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
getsysstats.c
misc: Add __get_nprocs_sched
2021-09-27 09:13:06 -03:00
getttyent.c
Fix -Os getc_unlocked linknamespace, localplt issues (bug 15105, bug 19463).
2018-02-21 18:01:11 +00:00
getusershell.c
Remove internal usage of extensible stat functions
2020-09-11 14:35:32 -03:00
getxattr.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
gtty.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
hsearch_r.c
Remove "Contributed by" lines
2021-09-03 22:06:44 +05:30
hsearch.c
Remove "Contributed by" lines
2021-09-03 22:06:44 +05:30
ifunc-impl-list.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
init-misc.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
insremque.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
ioctl.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
lgetxattr.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
libgen.h
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
listxattr.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
llistxattr.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
lremovexattr.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
lsearch.c
Remove "Contributed by" lines
2021-09-03 22:06:44 +05:30
lsetxattr.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
lutimes.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
madvise.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
makedev.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
Makefile
Move malloc hooks into a compat DSO
2021-07-22 18:37:59 +05:30
mincore.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
mkdtemp.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
mkostemp64.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
mkostemp.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
mkostemps64.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
mkostemps.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
mkstemp64.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
mkstemp.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
mkstemps64.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
mkstemps.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
mktemp.c
nptl: Move sem_close, sem_open into libc
2021-05-05 17:19:38 +02:00
mlock.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
mlockall.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
mmap64.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
mmap.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
mntent_r.c
mntent: Use __putc_unlocked instead of fputc_unlocked
2021-01-08 21:02:12 +05:30
mntent.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
mntent.h
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
mprotect.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
msync.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
munlock.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
munlockall.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
munmap.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
preadv2.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
preadv64.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
preadv64v2.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
preadv.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
pselect.c
Remove "Contributed by" lines
2021-09-03 22:06:44 +05:30
ptrace.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
pwritev2.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
pwritev64.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
pwritev64v2.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
pwritev.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
qefgcvt_r.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
qefgcvt.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
readv.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
reboot.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
regexp.c
Remove "Contributed by" lines
2021-09-03 22:06:44 +05:30
regexp.h
Remove "Contributed by" lines
2021-09-03 22:06:44 +05:30
remap_file_pages.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
removexattr.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
revoke.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
sbrk.c
Use hidden visibility for early static PIE code
2021-01-21 15:55:01 +00:00
search.h
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
select.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
setdomain.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
setegid.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
seteuid.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
sethostid.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
sethostname.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
setregid.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
setreuid.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
setxattr.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
sgtty.h
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
single_threaded.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
sstk.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
stab.h
…
stty.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
swapoff.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
swapon.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
sync.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
syncfs.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
syscall.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
syscall.h
…
sysexits.h
…
syslog.c
misc: syslog: Use static const for AF_UNIX address
2021-04-15 11:32:40 -03:00
syslog.h
…
truncate64.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
truncate.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
tsearch.c
Remove "Contributed by" lines
2021-09-03 22:06:44 +05:30
tst-allocate_once.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
tst-atomic-long.c
Remove "Contributed by" lines
2021-09-03 22:06:44 +05:30
tst-atomic.c
Remove "Contributed by" lines
2021-09-03 22:06:44 +05:30
tst-dbl-efgcvt.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
tst-dirname.c
Remove "Contributed by" lines
2021-09-03 22:06:44 +05:30
tst-efgcvt-template.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
tst-empty.c
Move all tests out of the csu subdirectory
2016-12-21 11:52:19 +01:00
tst-error1.c
Split DIAG_* macros to new header libc-diag.h.
2017-02-25 09:59:46 -05:00
tst-fd_to_filename.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
tst-fdset.c
Remove "Contributed by" lines
2021-09-03 22:06:44 +05:30
tst-gethostid.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
tst-hsearch.c
Modify several tests to use test-skeleton.c
2014-11-05 15:24:08 +05:30
tst-insremque.c
…
tst-ioctl-time64.c
misc: Add time64 alias for ioctl
2021-07-21 11:58:09 +02:00
tst-ioctl.c
misc: Add time64 alias for ioctl
2021-07-21 11:58:09 +02:00
tst-ldbl-efgcvt.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
tst-ldbl-error.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
tst-ldbl-warn.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
tst-makedev.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
tst-mntent2.c
Fix warning in misc/tst-mntent2.c.
2014-12-16 10:27:16 +01:00
tst-mntent-autofs.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
tst-mntent-blank-corrupt.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
tst-mntent-blank-passno.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
tst-mntent-escape.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
tst-mntent.c
Remove "Contributed by" lines
2021-09-03 22:06:44 +05:30
tst-preadvwritev2-common.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
tst-preadvwritev2.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
tst-preadvwritev64.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
tst-preadvwritev64v2.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
tst-preadvwritev-common.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
tst-preadvwritev.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
tst-pselect-time64.c
y2038: Add test coverage
2021-06-15 10:42:11 -03:00
tst-pselect.c
linux: Only use 64-bit syscall if required for pselect
2021-06-22 12:09:52 -03:00
tst-select-time64.c
y2038: Add test coverage
2021-06-15 10:42:11 -03:00
tst-select.c
linux: Only use 64-bit syscall if required for select
2021-06-22 12:09:52 -03:00
tst-syscalls.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
tst-tsearch.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
tst-warn-wide.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
ttyent.h
Remove pre-ISO C support
2012-01-07 23:57:22 -05:00
ttyslot.c
As a minor cleanup remove the (r)index defines from include/string.h as
2017-02-06 18:15:18 +00:00
ualarm.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
unwind-link.c
Implement <unwind-link.h> for dynamically loading the libgcc_s unwinder
2021-03-01 15:58:01 +01:00
usleep.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
ustat.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
utimes.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
Versions
Implement <unwind-link.h> for dynamically loading the libgcc_s unwinder
2021-03-01 15:58:01 +01:00
vhangup.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00
writev.c
Update copyright dates with scripts/update-copyrights
2021-01-02 12:17:34 -08:00