[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]

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

--- Comment #4 from Simon Martin <simartin at gcc dot gnu.org> ---
Patch submitted in
https://gcc.gnu.org/pipermail/gcc-patches/2024-December/672144.html