[Bug c++/115806] [12/13/14/15 Regression] No error for member enum redefinition in class template (even after instantiation)

[simartin at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115806

--- Comment #4 from Simon Martin <simartin at gcc dot gnu.org> ---
This started to fail with
https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff;h=557831a91df947b447fc9fd94ecad02470a3c86a