https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65089
--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> --- (In reply to Jerry DeLisle from comment #8) > True, fortran strings are not generally NULL terminated. However, for > internal representation between Frontend and library we try to do so for > safety. Evidently missed one or don't have it in this case. Still odd that > my manual, so to speak, 'for' loop is finding a NULL and counting the > correct length. I will do some more digging, probably something "obvious". > Just not seeing it yet. Has libgfortran been compiled with -fsanitize=address, or just the testcase? If the for loop is in the library that has not been instrumented, it is obvious why it doesn't trigger, while if you call strlen there and it is emitted as a library call, then it is intercepted by libasan and thus is instrumented. And the global variable (string literal) strlen is called on resides in the executable and is instrumented there.
