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| author | H.J. Lu <hjl.tools@gmail.com> | 2021-05-23 09:15:52 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2021-05-24 07:42:12 -0700 |
| commit | 79aec841029c160a85f46564f8bad132af008e30 (patch) | |
| tree | af636da51359f8ff5d18d700b51067e1196b37c0 /malloc/malloc.c | |
| parent | 1b992204f68af851e905c16016756fd4421e1934 (diff) | |
| download | glibc-79aec841029c160a85f46564f8bad132af008e30.zip glibc-79aec841029c160a85f46564f8bad132af008e30.tar.gz glibc-79aec841029c160a85f46564f8bad132af008e30.tar.bz2 | |
Properly check stack alignment [BZ #27901]
1. Replace
if ((((uintptr_t) &_d) & (__alignof (double) - 1)) != 0)
which may be optimized out by compiler, with
int
__attribute__ ((weak, noclone, noinline))
is_aligned (void *p, int align)
{
return (((uintptr_t) p) & (align - 1)) != 0;
}
2. Add TEST_STACK_ALIGN_INIT to TEST_STACK_ALIGN.
3. Add a common TEST_STACK_ALIGN_INIT to check 16-byte stack alignment
for both i386 and x86-64.
4. Update powerpc to use TEST_STACK_ALIGN_INIT.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Diffstat (limited to 'malloc/malloc.c')
0 files changed, 0 insertions, 0 deletions