https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103365
Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Summary|[12 Regression] ICE in |ICE in |register_scoped_attribute, |register_scoped_attribute, |at attribs.c:390 |at attribs.c:390 Status|UNCONFIRMED |NEW Keywords| |ice-on-valid-code Last reconfirmed| |2021-11-22 Ever confirmed|0 |1 Component|c |middle-end --- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> --- #pragma GCC diagnostic ignored_attributes "n::_a" There is a check to make sure the attribute isn't named __a__ but the assert only checks that the attribute starts with _. Note you can also reproduce the ICE with the following option passed to GCC: -Wno-attributes=n::_a Confirmed, not a regression as the warning option is new.