http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55289
--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> 2012-11-13 13:23:28 UTC --- > You can find these files in.. > > http://llvm.org/svn/llvm-project/compiler-rt/branches/release_32/lib/interception/mach_override/ With this files I have been able to do a clean bootstrap at revision 193472 on x86_64-apple-darwin10. However, first, I have to supply the lib path for libasan when using -faddress-sanitizer: -L/opt/gcc/gcc4.8w/lib -lasan; second, the executable fails to run with: dyld: Symbol not found: _CFStringCreateCopy Referenced from: /opt/gcc/gcc4.8w/lib/libasan.0.dylib Expected in: flat namespace in /opt/gcc/gcc4.8w/lib/libasan.0.dylib Trace/BPT trap Looking at the web, it seems to be a known issue with darwin, but I have been unable to understand how it can be fixed. Indeed I also see pr55291.