https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63939
--- Comment #22 from howarth at bromo dot med.uc.edu --- At r217817 on x86_64-apple-darwin14, without llvm-symbolizer in the path but with https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63534#c50 applied, I still see failures for... FAIL: c-c++-common/asan/null-deref-1.c -O1 output pattern test, is ASAN:SIGSEGV FAIL: c-c++-common/asan/null-deref-1.c -O2 output pattern test, is ASAN:SIGSEGV FAIL: c-c++-common/asan/null-deref-1.c -O3 -fomit-frame-pointer output pattern test, is ASAN:SIGSEGV FAIL: c-c++-common/asan/null-deref-1.c -O3 -g output pattern test, is ASAN:SIGSEGV FAIL: c-c++-common/asan/null-deref-1.c -Os output pattern test, is ASAN:SIGSEGV FAIL: c-c++-common/asan/null-deref-1.c -O2 -flto -flto-partition=none output pattern test, is ASAN:SIGSEGV FAIL: c-c++-common/asan/null-deref-1.c -O2 -flto output pattern test, is ASAN:SIGSEGV as well as the unpatched c-c++-common/asan/strlen-overflow-1.c failures.