https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63814
--- Comment #8 from Dominique d'Humieres <dominiq at lps dot ens.fr> --- > So, is this compile time failure or runtime failure (or both for two tests)? If gcc is configured without --enable-checking=release (default checking for trunk), it is a compile problem. If gcc is configured with --enable-checking=release, it is a runtime problem.