[Bug c++/50418] nested class typedef with same name and pointing to parent class typedef

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50418

--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> 2011-09-15 
12:17:48 UTC ---
[basic.scope.class]
A name N used in a class S shall refer to the same declaration
in its context and when re-evaluated in the completed scope of
S. No diagnostic is required for a violation of this rule.


Which implies the program is ill-formed.