[Bug c/60194] -Wformat should also warn when using %d (instead of %u) for unsigned arguments

[eblake at redhat dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60194

Eric Blake <eblake at redhat dot com> changed:

           What    |Removed                     |Added
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                 CC|                            |eblake at redhat dot com

--- Comment #5 from Eric Blake <eblake at redhat dot com> ---
See also bug 65446 for a possible hole in the -Wformat-signedness
implementation, when dealing with integer promotion.