On Mon, Nov 11, 2013 at 03:01:53PM +0100, Dodji Seketeli wrote:
> Since a couple of days I am seeing failure on the tests above on my
> Fedora system. The errors look like:
>
> FAIL: c-c++-common/asan/memcmp-1.c -O0 output pattern test, is
> =================================================================
> ==21832==ERROR: AddressSanitizer: stack-buffer-overflow on address
> 0x7fff75df96f4 at pc 0x7f98ecbab68b bp 0x7fff75df96b0 sp 0x7fff75df95b8
> READ of size 6 at 0x7fff75df96f4 thread T0
> #0 0x7f98ecbab68a in __interceptor_memcmp
> /home/dodji/git/gcc/master/libsanitizer/asan/asan_interceptors.cc:295
> (discriminator 7)
> #1 0x7f98ecbb6393 in __asan_report_error
> /home/dodji/git/gcc/master/libsanitizer/asan/asan_report.cc:774
> (discriminator 9)
> #2 0x7f98ecbab6d0 in __interceptor_memcmp
> /home/dodji/git/gcc/master/libsanitizer/asan/asan_interceptors.cc:295
> (discriminator 7)
> #3 0x400b0a in main
> /home/dodji/git/gcc/master/gcc/testsuite/c-c++-common/asan/memcmp-1.c:14
That looks like a bug in libasan, __asan_report_error doesn't call memcmp
again. So something is wrong with getting proper backtrace it seems.
Jakub
