https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119011
--- Comment #14 from Vincent Lefèvre <vincent-gcc at vinc17 dot net> --- (In reply to Jakub Jelinek from comment #4) > If you want to compare against all ones time_t, just use ~(time_t)0 or > similar. This one is a bad idea as it may have issues with signed types (when not in two's completed) but *also* on unsigned integer types of rank less than int. If you know the name of the type, say time_t, then just compare to (time_t)-1.
