https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105725
Bug ID: 105725 Summary: [ICE] segfault with `-Wmismatched-tags` Product: gcc Version: 12.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: tim at klingt dot org Target Milestone: --- possibly a duplicate of 103703, but the backtrace is slightly different, so i'd file a separate ticket for it: cwise gave me: ``` template <class T> class T::QPrivateSignal ``` stack trace ``` 0xd8e7d3 crash_signal ../../src/gcc/toplev.cc:322 0x7f59c77a051f ??? ./signal/../sysdeps/unix/sysv/linux/x86_64/libc_sigaction.c:0 0x7ba59e class_decl_loc_t::add(cp_parser*, unsigned int, tag_types, tree_node*, bool, bool) ../../src/gcc/cp/parser.cc:33489 0x7e44ba cp_parser_elaborated_type_specifier ../../src/gcc/cp/parser.cc:20659 0x7c8972 cp_parser_type_specifier ../../src/gcc/cp/parser.cc:19370 0x7d8e90 cp_parser_type_specifier_seq ../../src/gcc/cp/parser.cc:24349 0x7d7214 cp_parser_type_id_1 ../../src/gcc/cp/parser.cc:24149 0x7d9fb3 cp_parser_template_type_arg ../../src/gcc/cp/parser.cc:24257 0x7da119 cp_parser_template_argument ../../src/gcc/cp/parser.cc:18799 0x7da119 cp_parser_template_argument_list ../../src/gcc/cp/parser.cc:18723 0x7da119 cp_parser_enclosed_template_argument_list ../../src/gcc/cp/parser.cc:32029 0x7db50f cp_parser_template_id ../../src/gcc/cp/parser.cc:18262 0x7dbcc9 cp_parser_class_name ../../src/gcc/cp/parser.cc:25698 0x7d386e cp_parser_qualifying_entity ../../src/gcc/cp/parser.cc:7116 0x7d386e cp_parser_nested_name_specifier_opt ../../src/gcc/cp/parser.cc:6798 0x7eaa4c cp_parser_simple_type_specifier ../../src/gcc/cp/parser.cc:19761 0x7c89d5 cp_parser_type_specifier ../../src/gcc/cp/parser.cc:19420 0x7d8e90 cp_parser_type_specifier_seq ../../src/gcc/cp/parser.cc:24349 0x7d7214 cp_parser_type_id_1 ../../src/gcc/cp/parser.cc:24149 0x7d9fb3 cp_parser_template_type_arg ../../src/gcc/cp/parser.cc:24257 ```