[Bug c++/98295] New: [9/10/11 Regression] ICE in verify_ctor_sanity, at cp/constexpr.c:4312

[gscfq@t-online.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98295

            Bug ID: 98295
           Summary: [9/10/11 Regression] ICE in verify_ctor_sanity, at
                    cp/constexpr.c:4312
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: gscfq@t-online.de
  Target Milestone: ---

Affects versions down to r7 :


$ cat z1.cc
struct A { constexpr A(); };
void f ()
{
  A b[2][3];
  [b] {};
}


$ g++-11-20201213 -c z1.cc
z1.cc: In function 'void f()':
z1.cc:5:3: internal compiler error: in verify_ctor_sanity, at
cp/constexpr.c:4312
    5 |   [b] {};
      |   ^~~~~~
0x67c29d verify_ctor_sanity
        ../../gcc/cp/constexpr.c:4306
0x689c3c cxx_eval_bare_aggregate
        ../../gcc/cp/constexpr.c:4342
0x681259 cxx_eval_constant_expression
        ../../gcc/cp/constexpr.c:6574
0x682adc cxx_eval_array_reference
        ../../gcc/cp/constexpr.c:3763
0x682adc cxx_eval_constant_expression
        ../../gcc/cp/constexpr.c:6498
0x681041 cxx_eval_array_reference
        ../../gcc/cp/constexpr.c:3659
0x681041 cxx_eval_constant_expression
        ../../gcc/cp/constexpr.c:6498
0x6833cd cxx_eval_constant_expression
        ../../gcc/cp/constexpr.c:6205
0x68a33a cxx_eval_vec_init_1
        ../../gcc/cp/constexpr.c:4548
0x68a417 cxx_eval_vec_init_1
        ../../gcc/cp/constexpr.c:4524
0x681d76 cxx_eval_vec_init
        ../../gcc/cp/constexpr.c:4599
0x681d76 cxx_eval_constant_expression
        ../../gcc/cp/constexpr.c:6584
0x683eab cxx_eval_outermost_constant_expr
        ../../gcc/cp/constexpr.c:7126
0x686e7f maybe_constant_init_1
        ../../gcc/cp/constexpr.c:7578
0x7db5ce massage_init_elt
        ../../gcc/cp/typeck2.c:1309
0x7da80f process_init_constructor_record
        ../../gcc/cp/typeck2.c:1528
0x7da80f process_init_constructor
        ../../gcc/cp/typeck2.c:1806
0x7da80f digest_init_r
        ../../gcc/cp/typeck2.c:1195
0x7a0e36 finish_compound_literal(tree_node*, tree_node*, int, fcl_t)
        ../../gcc/cp/semantics.c:3001
0x6f1074 build_lambda_object(tree_node*)
        ../../gcc/cp/lambda.c:118