[Bug c++/101449] New: [modules] internal compiler error: in cxx_eval_call_expression

[ensadc at mailnesia dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101449

            Bug ID: 101449
           Summary: [modules] internal compiler error: in
                    cxx_eval_call_expression
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: ensadc at mailnesia dot com
  Target Milestone: ---

$ cat str.cpp
export module str;

export struct str {
    constexpr str() {
        ptr = new char[42];
    }
    constexpr ~str() { delete[] ptr; }

    const char* ptr = nullptr;
};

export constexpr str get_str() { return str{}; }

$ cat main.cpp
import str;

int main() {
    str a = get_str();
}

$ g++ -std=c++2b -fmodules-ts str.cpp main.cpp
main.cpp: In function ‘int main()’:
main.cpp:4:21:   in ‘constexpr’ expansion of ‘get_str@str()()’
main.cpp:4:21: internal compiler error: in cxx_eval_call_expression, at
cp/constexpr.c:2742
    4 |     str a = get_str();
      |                     ^
0x652ee9 cxx_eval_call_expression
        ../../gcc/gcc/cp/constexpr.c:2742
0x9e54f1 cxx_eval_constant_expression
        ../../gcc/gcc/cp/constexpr.c:6250
0x9e8829 cxx_eval_outermost_constant_expr
        ../../gcc/gcc/cp/constexpr.c:7282
0x9ed921 maybe_constant_value(tree_node*, tree_node*, bool)
        ../../gcc/gcc/cp/constexpr.c:7556
0xa20665 cp_fully_fold(tree_node*)
        ../../gcc/gcc/cp/cp-gimplify.c:2146
0xa207f4 cp_fully_fold(tree_node*)
        ../../gcc/gcc/cp/cp-gimplify.c:2140
0xa207f4 cp_fully_fold_init(tree_node*)
        ../../gcc/gcc/cp/cp-gimplify.c:2167
0xc16e03 store_init_value(tree_node*, tree_node*, vec<tree_node*, va_gc,
vl_embed>**, int)
        ../../gcc/gcc/cp/typeck2.c:816
0xa3a300 check_initializer
        ../../gcc/gcc/cp/decl.c:7169
0xa5dfd0 cp_finish_decl(tree_node*, tree_node*, bool, tree_node*, int)
        ../../gcc/gcc/cp/decl.c:8103
0xb4a89f cp_parser_init_declarator
        ../../gcc/gcc/cp/parser.c:22258
0xb2608d cp_parser_simple_declaration
        ../../gcc/gcc/cp/parser.c:14801
0xb27d69 cp_parser_declaration_statement
        ../../gcc/gcc/cp/parser.c:13936
0xb28743 cp_parser_statement
        ../../gcc/gcc/cp/parser.c:12066
0xb2904e cp_parser_statement_seq_opt
        ../../gcc/gcc/cp/parser.c:12433
0xb29128 cp_parser_compound_statement
        ../../gcc/gcc/cp/parser.c:12382
0xb48ff0 cp_parser_function_body
        ../../gcc/gcc/cp/parser.c:24448
0xb48ff0 cp_parser_ctor_initializer_opt_and_function_body
        ../../gcc/gcc/cp/parser.c:24499
0xb49aea cp_parser_function_definition_after_declarator
        ../../gcc/gcc/cp/parser.c:30572
0xb4ac96 cp_parser_function_definition_from_specifiers_and_declarator
        ../../gcc/gcc/cp/parser.c:30488
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Please include the complete backtrace with any bug report.
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