https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91795
Martin Liška <marxin at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution|--- |INVALID --- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> --- I bet you are using clang and not gcc. Can you please run: $ gcc --version It's because we do not support unsigned-integer-overflow as a -fsanitize option.