https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107321
Bug ID: 107321 Summary: [10/11/12/13 Regression] ICE in strip_array_types, at tree.cc:7284 Product: gcc Version: 13.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: gs...@t-online.de Target Milestone: --- Started with r10 between 20191103 and 20191110: $ cat z1.cc template <typename A, typename... T> void f (T... b) { bool operator == (A x, A y) = default; } $ gcc-13-20221016 -c z1.cc -std=c++2a z1.cc: In function 'void f(T ...)': z1.cc:4:29: warning: declaration of 'bool operator==(A, A)' has 'extern' and is initialized 4 | bool operator == (A x, A y) = default; | ^ z1.cc:4:33: internal compiler error: Segmentation fault 4 | bool operator == (A x, A y) = default; | ^~~~~~~ 0xe7a2ff crash_signal ../../gcc/toplev.cc:314 0x110aee0 strip_array_types(tree_node*) ../../gcc/tree.cc:7284 0x957988 cp_type_quals(tree_node const*) ../../gcc/cp/typeck.cc:11451 0x94f713 cp_build_qualified_type(tree_node*, int, int) ../../gcc/cp/tree.cc:1378 0x9595d6 same_type_ignoring_top_level_qualifiers_p(tree_node*, tree_node*) ../../gcc/cp/typeck.cc:1745 0x85a805 early_check_defaulted_comparison ../../gcc/cp/method.cc:1227 0x85a805 defaultable_fn_check(tree_node*) ../../gcc/cp/method.cc:3433 0x815f28 cp_finish_decl(tree_node*, tree_node*, bool, tree_node*, int) ../../gcc/cp/decl.cc:8247 0x8de9e4 cp_parser_init_declarator ../../gcc/cp/parser.cc:22895 0x8baca2 cp_parser_simple_declaration ../../gcc/cp/parser.cc:15284 0x8bc569 cp_parser_declaration_statement ../../gcc/cp/parser.cc:14365 0x8bcb5b cp_parser_statement ../../gcc/cp/parser.cc:12436 0x8bdb24 cp_parser_statement_seq_opt ../../gcc/cp/parser.cc:12853 0x8bdbdf cp_parser_compound_statement ../../gcc/cp/parser.cc:12805 0x8ddb08 cp_parser_function_body ../../gcc/cp/parser.cc:25179 0x8ddb08 cp_parser_ctor_initializer_opt_and_function_body ../../gcc/cp/parser.cc:25230 0x8ddfc6 cp_parser_function_definition_after_declarator ../../gcc/cp/parser.cc:31387 0x8df149 cp_parser_function_definition_from_specifiers_and_declarator ../../gcc/cp/parser.cc:31304 0x8df149 cp_parser_init_declarator ../../gcc/cp/parser.cc:22633 0x8e1f43 cp_parser_single_declaration ../../gcc/cp/parser.cc:31903