[Bug c++/127944] Unintialized member copy not diagnosed in constant expression

[namark at disroot dot org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=127944

--- Comment #2 from namark <namark at disroot dot org> ---
This one was in the suggestions and sounded similar
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120088 
but it's a union.