[Bug c++/91405] [concepts] internal compiler error: in synthesize_implicit_template_parm, at cp/parser.c:41206

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91405

--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> ---
It was fixed by r276764