https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93639
--- Comment #4 from raphael grimm <raphael.grimm at kit dot edu> --- Created attachment 47835 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=47835&action=edit reduced to 11 lines and no includes http://coliru.stacked-crooked.com/a/be3bbfdf6a59b45e on g++ (GCC) 9.2.0 output: main.cpp:8:26: internal compiler error: Segmentation fault 8 | using type = B<a.cstr>; | ^ 0xb5c5ff crash_signal ../.././gcc/toplev.c:326 0x5cb5c3 resolve_args ../.././gcc/cp/call.c:4350 0x5da0c7 build_new_function_call(tree_node*, vec<tree_node*, va_gc, vl_embed>**, int) ../.././gcc/cp/call.c:4469 0x6bbeaf do_class_deduction ../.././gcc/cp/pt.c:27497 0x6bbeaf do_auto_deduction(tree_node*, tree_node*, tree_node*, int, auto_deduction_context, tree_node*, int) ../.././gcc/cp/pt.c:27556 0x6c492d convert_template_argument ../.././gcc/cp/pt.c:8086 0x6c492d convert_template_argument ../.././gcc/cp/pt.c:7859 0x6cf795 coerce_template_parms ../.././gcc/cp/pt.c:8589 0x6d0b2a lookup_template_class_1 ../.././gcc/cp/pt.c:9399 0x6d0b2a lookup_template_class(tree_node*, tree_node*, tree_node*, tree_node*, int, int) ../.././gcc/cp/pt.c:9769 0x6ebe5d finish_template_type(tree_node*, tree_node*, int) ../.././gcc/cp/semantics.c:3312 0x6929c5 cp_parser_template_id ../.././gcc/cp/parser.c:16481 0x692b07 cp_parser_class_name ../.././gcc/cp/parser.c:23276 0x695790 cp_parser_qualifying_entity ../.././gcc/cp/parser.c:6696 0x695790 cp_parser_nested_name_specifier_opt ../.././gcc/cp/parser.c:6382 0x6931f5 cp_parser_simple_type_specifier ../.././gcc/cp/parser.c:17839 0x68a1a5 cp_parser_type_specifier ../.././gcc/cp/parser.c:17507 0x69d118 cp_parser_type_specifier_seq ../.././gcc/cp/parser.c:21985 0x69a4b4 cp_parser_type_id_1 ../.././gcc/cp/parser.c:21814 0x69e902 cp_parser_type_id ../.././gcc/cp/parser.c:21893 Please submit a full bug report, with preprocessed source if appropriate. Please include the complete backtrace with any bug report. See <https://gcc.gnu.org/bugs/> for instructions.
