[Bug c++/118078] [12/13/14/15 Regression] GCC crashes on incorrect code with -std=c++20 since r10-4719

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118078

--- Comment #3 from Simon Martin <simartin at gcc dot gnu.org> ---
Thanks for the report. I'm currently testing a patch that leverages
TYPE_BEING_DEFINED instead or looking at current_class_type.