https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107460
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
<source>: In instantiation of 'Event::Event(EventCat, auto:1) [with auto:1 =
int]':
<source>:38:32: required from here
<source>:30:30: internal compiler error: tree check: expected enumeral_type,
have record_type in tsubst_copy, at cp/pt.cc:17024
30 | boundsCheck<EventCat>(a_category, kEventCat_Min); // using
"EventCat::kEventCat_Min" instead of just "kEventCat_Min" makes this not fail
| ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
