[Bug c++/104647] New: [9/10/11/12 Regression] ICE in get_or_insert_ctor_field, at cp/constexpr.cc:3705

[Bug c++/104647] New: [9/10/11/12 Regression] ICE in get_or_insert_ctor_field, at cp/constexpr.cc:3705

[gscfq@t-online.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104647

            Bug ID: 104647
           Summary: [9/10/11/12 Regression] ICE in
                    get_or_insert_ctor_field, at cp/constexpr.cc:3705
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: gscfq@t-online.de
  Target Milestone: ---

Seems to have started between 20181104 and 20181111 :
(gcc configured with --enable-checking=yes)


$ cat z1.cc
struct A { int i; int f(); };
typedef int A::*MemPtr;
typedef int (A::*MemFuncPtr)();
struct B { MemPtr a[3]; MemFuncPtr b[3]; };
template <B> struct X {};
template <typename T>
typedef X<B{{}, { MemFuncPtr{ nullptr }}}> XB;


$ cat z2.cc
struct A { int i; int f(); };
typedef int A::*MemPtr;
typedef int (A::*MemFuncPtr)();
struct B { MemPtr a[3]; MemFuncPtr b[3]; };
template <B> struct X {};
template <typename T>
typedef X<B{{}, { MemFuncPtr{ 0 }}}> XB;


$ cat za1.cc
struct A typedef *MemPtr;
typedef (A::*MemFuncPtr) ();
struct B { int *b; MemFuncPtr c; };
template <B<B{{}, MemFuncPtr {nullptr}};


$ g++-12-20220220 -c z1.cc -std=c++20   # or -std=c++2a
z1.cc:7:41: internal compiler error: Segmentation fault
    7 | typedef X<B{{}, { MemFuncPtr{ nullptr }}}> XB;
      |                                         ^
0x10ca74f crash_signal
        ../../gcc/toplev.cc:322
0x76d8b2 get_or_insert_ctor_field
        ../../gcc/cp/constexpr.cc:3705
0x784b33 cxx_eval_bare_aggregate
        ../../gcc/cp/constexpr.cc:4825
0x774b40 cxx_eval_constant_expression
        ../../gcc/cp/constexpr.cc:7110
0x779ec3 cxx_eval_outermost_constant_expr
        ../../gcc/cp/constexpr.cc:7706
0x77f270 fold_non_dependent_expr_template
        ../../gcc/cp/constexpr.cc:8065
0x77f7a4 fold_non_dependent_init(tree_node*, int, bool, tree_node*)
        ../../gcc/cp/constexpr.cc:8143
0xa59638 massage_init_elt
        ../../gcc/cp/typeck2.cc:1437
0xa599d4 process_init_constructor_array
        ../../gcc/cp/typeck2.cc:1502
0xa57c9a process_init_constructor
        ../../gcc/cp/typeck2.cc:1917
0xa57c9a digest_init_r
        ../../gcc/cp/typeck2.cc:1325
0xa59627 massage_init_elt
        ../../gcc/cp/typeck2.cc:1434
0xa5811b process_init_constructor_record
        ../../gcc/cp/typeck2.cc:1651
0xa5811b process_init_constructor
        ../../gcc/cp/typeck2.cc:1920
0xa5811b digest_init_r
        ../../gcc/cp/typeck2.cc:1325
0x9ddc3e finish_compound_literal(tree_node*, tree_node*, int, fcl_t)
        ../../gcc/cp/semantics.cc:3220
0x8fd33b cp_parser_functional_cast
        ../../gcc/cp/parser.cc:31832
0x91195d cp_parser_postfix_expression
        ../../gcc/cp/parser.cc:7578
0x928a01 cp_parser_unary_expression
        ../../gcc/cp/parser.cc:9035
0x8f63df cp_parser_cast_expression
        ../../gcc/cp/parser.cc:9939

[Bug c++/104647] [9/10/11/12 Regression] ICE in get_or_insert_ctor_field, at cp/constexpr.cc:3705

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104647

Marek Polacek <mpolacek at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
                 CC|                            |mpolacek at gcc dot gnu.org
     Ever confirmed|0                           |1
   Last reconfirmed|                            |2022-02-22

--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Confirmed.

[Bug c++/104647] [9/10/11/12 Regression] ICE in get_or_insert_ctor_field, at cp/constexpr.cc:3705

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104647

Marek Polacek <mpolacek at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |9.5

[Bug c++/104647] [9/10/11/12 Regression] ICE in get_or_insert_ctor_field, at cp/constexpr.cc:3705

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104647

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P3                          |P2

[Bug c++/104647] [9/10/11/12 Regression] ICE in get_or_insert_ctor_field, at cp/constexpr.cc:3705 since r9-3836-g4be5c72cf3ea3ee9

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104647

Martin Liška <marxin at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[9/10/11/12 Regression] ICE |[9/10/11/12 Regression] ICE
                   |in                          |in
                   |get_or_insert_ctor_field,   |get_or_insert_ctor_field,
                   |at cp/constexpr.cc:3705     |at cp/constexpr.cc:3705
                   |                            |since
                   |                            |r9-3836-g4be5c72cf3ea3ee9
                 CC|                            |jason at gcc dot gnu.org,
                   |                            |marxin at gcc dot gnu.org

--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
Started with r9-3836-g4be5c72cf3ea3ee9.

[Bug c++/104647] [10/11/12/13 Regression] ICE in get_or_insert_ctor_field, at cp/constexpr.cc:3705 since r9-3836-g4be5c72cf3ea3ee9

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104647

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|9.5                         |10.4

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
GCC 9 branch is being closed

[Bug c++/104647] [10/11/12/13 Regression] ICE in get_or_insert_ctor_field, at cp/constexpr.cc:3705 since r9-3836-g4be5c72cf3ea3ee9

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104647

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|10.4                        |10.5

--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 10.4 is being released, retargeting bugs to GCC 10.5.

[Bug c++/104647] [10/11/12/13 Regression] ICE in get_or_insert_ctor_field, at cp/constexpr.cc:3705 since r9-3836-g4be5c72cf3ea3ee9

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104647

Marek Polacek <mpolacek at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #5 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
This seems to have been fixed by r13-4564.

[Bug c++/104647] [10/11/12/13 Regression] ICE in get_or_insert_ctor_field, at cp/constexpr.cc:3705 since r9-3836-g4be5c72cf3ea3ee9

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104647

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|10.5                        |13.0