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| author |   Adhemerval Zanella <azanella@linux.vnet.ibm.com> | 2013-06-12 10:21:22 -0500 |
|---|---|---|
| committer | Adhemerval Zanella <azanella@linux.vnet.ibm.com> | 2013-06-12 10:21:22 -0500 |
| commit | 6a97b62a5b4f18aea849d6f4d8de58d1469d2521 (patch) | |
| tree | 0fdb35cb468bdb040fd3a1f01b4ddcc70b0f30dd /sysdeps/wordsize-32 | |
| parent | Make more libm tests condition exceptions tests with math-tests.h. (diff) | |
| download | glibc-6a97b62a5b4f18aea849d6f4d8de58d1469d2521.tar.gz glibc-6a97b62a5b4f18aea849d6f4d8de58d1469d2521.tar.bz2 glibc-6a97b62a5b4f18aea849d6f4d8de58d1469d2521.zip | |
Fix unsafe compiler optimization
GCC 4.8 enables -ftree-loop-distribute-patterns at -O3 by default and
this optimization may transform loops into memset/memmove calls. Without
proper handling this may generate unexpected PLT calls on GLIBC.
This patch fixes by create memset/memmove alias to internal GLIBC
__GI_memset/__GI_memmove symbols.
Diffstat (limited to 'sysdeps/wordsize-32')
| -rw-r--r-- | sysdeps/wordsize-32/symbol-hacks.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sysdeps/wordsize-32/symbol-hacks.h b/sysdeps/wordsize-32/symbol-hacks.h index 52ac5c1e0a..202a8070de 100644 --- a/sysdeps/wordsize-32/symbol-hacks.h +++ b/sysdeps/wordsize-32/symbol-hacks.h @@ -16,6 +16,8 @@ License along with the GNU C Library; if not, see <http://www.gnu.org/licenses/>. */ +#include_next "symbol-hacks.h" + /* A very dirty trick: gcc emits references to __divdi3, __udivdi3, __moddi3, and __umoddi3. These functions are exported and therefore we get PLTs. Unnecessarily so. Changing gcc is a big |