[Bug c++/109300] New: [13 Regression] ICE in cp_finish_decl, at cp/decl.cc:8279

["gscfq@t-online.de" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109300

            Bug ID: 109300
           Summary: [13 Regression] ICE in cp_finish_decl, at
                    cp/decl.cc:8279
           Product: gcc
           Version: 13.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: gscfq@t-online.de
  Target Milestone: ---

Started between 20230226 and 20230312 :


$ cat z1.cc
template<typename T>
auto x = [](){ x<int>(); };


$ gcc-13-20230326 -c z1.cc
z1.cc: In instantiation of 'auto x<int>':
z1.cc:2:16:   required from here
z1.cc:2:6: internal compiler error: in cp_finish_decl, at cp/decl.cc:8279
    2 | auto x = [](){ x<int>(); };
      |      ^
0x7a8893 cp_finish_decl(tree_node*, tree_node*, bool, tree_node*, int)
        ../../gcc/cp/decl.cc:8279
0x899b2a instantiate_body
        ../../gcc/cp/pt.cc:26799
0x89aa6f instantiate_decl(tree_node*, bool, bool)
        ../../gcc/cp/pt.cc:27121
0x7b210a maybe_instantiate_decl(tree_node*)
        ../../gcc/cp/decl2.cc:5448
0x7b2c62 mark_used(tree_node*, int)
        ../../gcc/cp/decl2.cc:5747
0x8cc5c3 finish_id_expression_1
        ../../gcc/cp/semantics.cc:4269
0x8cc5c3 finish_id_expression(tree_node*, tree_node*, tree_node*, cp_id_kind*,
bool, bool, bool*, bool, bool, bool, bool, char const**, unsigned int)
        ../../gcc/cp/semantics.cc:4411
0x853ecf cp_parser_primary_expression
        ../../gcc/cp/parser.cc:6149
0x856e76 cp_parser_postfix_expression
        ../../gcc/cp/parser.cc:7777
0x86a60f cp_parser_unary_expression
        ../../gcc/cp/parser.cc:9141
0x83e79f cp_parser_cast_expression
        ../../gcc/cp/parser.cc:10045
0x83f07f cp_parser_binary_expression
        ../../gcc/cp/parser.cc:10147
0x83fa74 cp_parser_assignment_expression
        ../../gcc/cp/parser.cc:10490
0x8411b2 cp_parser_expression
        ../../gcc/cp/parser.cc:10660
0x844837 cp_parser_expression_statement
        ../../gcc/cp/parser.cc:12816
0x851cbc cp_parser_statement
        ../../gcc/cp/parser.cc:12596
0x852d54 cp_parser_statement_seq_opt
        ../../gcc/cp/parser.cc:12967
0x852e0f cp_parser_compound_statement
        ../../gcc/cp/parser.cc:12919
0x853967 cp_parser_function_body
        ../../gcc/cp/parser.cc:25335
0x853967 cp_parser_lambda_body
        ../../gcc/cp/parser.cc:11837