[Bug c++/46206] using typedef-name error with typedef name hiding struct name

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46206

--- Comment #2 from Paolo Carlini <paolo.carlini at oracle dot com> ---
The difference is that in the first case the TYPE_DECL Bar is regenerated and
the DECL_IMPLICIT_TYPEDEF_P bit is lost, the true value set earlier by
create_implicit_typedef is lost.