https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80953
--- Comment #27 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot Uni-Bielefeld.DE> --- > --- Comment #26 from Jakub Jelinek <jakub at gcc dot gnu.org> --- > Try -fno-delayed-branch then? The debug info and unwind info for delayed > slots > isn't really well defined... For a quick check, I just tried it on c-c++-common/asan/heap-overflow-1.c at -O0 #0 0x11258 in main /vol/gcc/src/hg/trunk/local/gcc/testsuite/c-c++-common/asan/heap-overflow-1.c:21 vs. -O1: #0 0x1121c in main /vol/gcc/src/hg/trunk/local/gcc/testsuite/c-c++-common/asan/heap-overflow-1.c:24 -fno-delayed-branch made no difference.