https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100003
Bug ID: 100003 Summary: internal compiler error: in merge_exception_specifiers Product: gcc Version: 11.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: mpolacek at gcc dot gnu.org Target Milestone: --- The directive here is important: # 9 "" 3 template <typename T> struct S { bool foo(); S() noexcept(foo()); }; template<typename T> S<T>::S() noexcept(T::value) {} $ ./cc1plus -quiet q.C :13:49: internal compiler error: in merge_exception_specifiers, at cp/typeck2.c:2420 0xe1e274 merge_exception_specifiers(tree_node*, tree_node*) /home/mpolacek/src/gcc/gcc/cp/typeck2.c:2420 0xdef11c merge_types(tree_node*, tree_node*) /home/mpolacek/src/gcc/gcc/cp/typeck.c:890 0xb14e18 duplicate_decls(tree_node*, tree_node*, bool, bool) /home/mpolacek/src/gcc/gcc/cp/decl.c:2339 0xb3a380 grokfndecl /home/mpolacek/src/gcc/gcc/cp/decl.c:10143 0xb468b3 grokdeclarator(cp_declarator const*, cp_decl_specifier_seq*, decl_context, int, tree_node**) /home/mpolacek/src/gcc/gcc/cp/decl.c:13903 0xb54ba2 start_function(cp_decl_specifier_seq*, cp_declarator const*, tree_node*) /home/mpolacek/src/gcc/gcc/cp/decl.c:16838 0xcb0635 cp_parser_function_definition_from_specifiers_and_declarator /home/mpolacek/src/gcc/gcc/cp/parser.c:29904 0xc9f847 cp_parser_init_declarator /home/mpolacek/src/gcc/gcc/cp/parser.c:21634 0xcb1f58 cp_parser_single_declaration /home/mpolacek/src/gcc/gcc/cp/parser.c:30528 0xcb0bdd cp_parser_template_declaration_after_parameters /home/mpolacek/src/gcc/gcc/cp/parser.c:30100 0xcb1b51 cp_parser_explicit_template_declaration /home/mpolacek/src/gcc/gcc/cp/parser.c:30366 0xcb1bab cp_parser_template_declaration_after_export /home/mpolacek/src/gcc/gcc/cp/parser.c:30385 0xc95af6 cp_parser_template_declaration /home/mpolacek/src/gcc/gcc/cp/parser.c:16594 0xc913c4 cp_parser_declaration /home/mpolacek/src/gcc/gcc/cp/parser.c:14070 0xc917d7 cp_parser_toplevel_declaration /home/mpolacek/src/gcc/gcc/cp/parser.c:14168 0xc7d11f cp_parser_translation_unit /home/mpolacek/src/gcc/gcc/cp/parser.c:4942 0xce022a c_parse_file() /home/mpolacek/src/gcc/gcc/cp/parser.c:45268 0xea2d8e c_common_parse_file() /home/mpolacek/src/gcc/gcc/c-family/c-opts.c:1218