[Bug c++/17693] use typedef name in diagnostic

[manu at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17693

--- Comment #2 from Manuel López-Ibáñez <manu at gcc dot gnu.org> 2011-10-22 14:14:18 UTC ---
GCC 4.7 does away with the typedefs completely:

pr17693.cc: In instantiation of ‘void A::g() [with T = int]’:
pr17693.cc:13:16:   required from here
pr17693.cc:8:5: error: ‘a’ is not a member of ‘int’
pr17693.cc: In instantiation of ‘void B::f(T, U) [with T = int; U = char]’:
pr17693.cc:32:35:   required from here
pr17693.cc:27:5: error: invalid conversion from ‘char’ to ‘void*’
[-fpermissive]
pr17693.cc:21:8: error:   initializing argument 1 of ‘void B::g(void*,
B::mysize_t)’ [-fpermissive]

which in this case doesn't look so bad, but with very deeply nested stuff, it
probably looks awful.