[Bug c++/59931] Wrong wording of diagnostic about imaginary "member function type"

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59931

--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to frankhb1989 from comment #0)
> The member 'C::f' here should have type 'void ()'(if it makes
> sense),

I don't think so, that would produce an even worse diagnostic if you tried to
convert 't' to a void (*)():

a.cc:6:21: error: cannot convert 'C::f' from type 'void ()' to type  'void
(*()'
   void (*pf)() = f;
                  ^
That would be worse, because void() to void(*)() _is_ a valid conversion, so we
really don't want to imply 'f' has that type and then have to say an apparently
valid conversion wasn't possible.