[Bug c++/70635] [4.9/5/6 Regression] ICE on (and rejects) valid code on x86_64-linux-gnu: Segmentation fault (program cc1plus)

[paolo.carlini at oracle dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70635

--- Comment #2 from Paolo Carlini <paolo.carlini at oracle dot com> ---
It's an infinite recursion affecting the same_type_p call at parser.c:25125
which I added in that patch.