[Bug c/118112] Unhelpful "too many arguments to function" error message (especially w/ C23)

[rguenth at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118112

--- Comment #10 from Richard Biener <rguenth at gcc dot gnu.org> ---
Can we show the location of the type declaration if there's no fndecl to point
to?  Or the location of the member declaration when there's no separate
type declaration?

I suppose a correct but non-portable (to pre-C23) fix would be

 typedef int (*IFP)(...);

?