https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61407
--- Comment #39 from Lawrence Velázquez <larryv at macports dot org> --- (In reply to Lawrence Velázquez from comment #38) > 2) You should report this bug upstream. > > http://compiler-rt.llvm.org On second thought, they probably won't accept it because the patch is invalid. sanitizer_mac.cc explicitly defines _DARWIN_USE_64_BIT_INODE, which result in 64-bit dirents on all platforms that AddressSanitizer supports (Snow Leopard and newer). The correct fix is to disable the AddressSanitizer build entirely on platforms that don't support 64-bit inodes (Leopard and older).