https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84212
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> --- Wstringop-overflow C ObjC C++ ObjC++ Warning Alias(Wstringop-overflow=, 2, 0) Warn about buffer overflow in string manipulation functions like memcpy and strcpy. LTO is missing in the list of supported FEs. All middle-end warning also need that.