https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92837
Bug ID: 92837 Summary: ICE on syntax error in requires clause, in cp_parser_constraint_primary_expression Product: gcc Version: 10.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: arthur.j.odwyer at gmail dot com Target Milestone: --- Bug 92439 may be related. cat >test.cc <<EOF template<class> concept A = true; template<class T> requires (A<T> int EOF g++ -std=c++2a test.cc test.cc:2:29: internal compiler error: in cp_parser_constraint_primary_expression, at cp/parser.c:27319 3 | template<class T> requires (A<T> int | ^~~~ Please submit a full bug report, with preprocessed source if appropriate. See <https://gcc.gnu.org/bugs/> for instructions.