https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67496
--- Comment #8 from Dominique d'Humieres <dominiq at lps dot ens.fr> --- > If yes, the problem might well be in ubsan, unless it has been fixed > in 7.0.0. I'll look into this. I have instrumented the trunk (7.0) and indeed the bug has not been fixed. Although my understanding of C is quite shallow, I cannot see what's wrong with the gfortran code, hence my question about a false positive.
