https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66773

--- Comment #22 from Vincent Lefèvre <vincent-gcc at vinc17 dot net> ---
(In reply to Segher Boessenkool from comment #21)
> If, as I said, the user uses explicit casts, that's not good.  Much better
> already is to use implicit casts, as I said;

There's no such thing as implicit casts. Casts are always explicit.

> and much better than that is
> to fix the problems at the root (use proper types everywhere), as I said.

This will not necessarily solve the problem, because the size and/or the
signedness of a type may be unknown (the signedness can be detected with a
macro, but there's no way to change the sign of a type).

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