http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55521
--- Comment #15 from Jack Howarth <howarth at nitro dot med.uc.edu> 2012-12-02 02:57:46 UTC --- Patch to switch libsanitizer on darwin from mach_override to mac interpose functions submitted to gcc-patches at http://gcc.gnu.org/ml/gcc-patches/2012-12/msg00055.html.