https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63406
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> --- I'd say it would still be worthwhile, if it was just a matter of XFAILing a few testcases, because the number of false positives is more important, if the warning is too unreliable, people just will ignore it completely. And people can combine it with -fsanitize=undefined, Fortran -fbounds-check etc.
