https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81986
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> --- (In reply to Vittorio Zecca from comment #2) > I do not know if this is a libgfortran or a sanitizer bug. > > What I do know is that changing string.c:199 from > > t = - n; > > into > > t = -(GFC_UINTEGER_LARGEST)n; This is of course the right fix, negation of smallest signed number is UB in C, while it is well defined when the negation is performed in corresponding unsigned type.
