https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66773
--- Comment #17 from Vincent Lefèvre <vincent-gcc at vinc17 dot net> ---
(In reply to Segher Boessenkool from comment #15)
> A much better fix is
>
> void f1(long s, unsigned long u) { unsigned long su = s; if (su == u) g(); }
But what if s is some arbitrary integer type, e.g. that comes from a library?
Even using uintmax_t may be insufficient. For instance, GCC has __uint128.
> Still much better is to not mixed signedness in types at all.
One does not necessarily have the choice. The signedness of some types is not
specified.
