[Bug debug/47510] DW_TAG_typedef can have children when designating a naming typedef

["rguenth at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510

--- Comment #5 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-03-15 16:24:27 UTC ---
(In reply to comment #4)
> This is because G++ generates struct F<int>::C.  The instantiated
> F<int>::C a typedef.  No anonymous struct is generated inside F<int>.
> What is generated is really the same as for:
> 
> template<typename T>
> class F
> {
>   struct C {int i};
>   C a;
> };
> F<int> f;
> 
> I guess we could try hard to trick the dwarf emitter into describing
> debug information for a typedef and an anonymous code that is actually
> not generated (instantiated), but would that be really worth it?

See also PR47939.  Yes, debug info consumers expect typedefs to be available
if they are used in source.