[Bug c++/100659] New: [11/12 Regression] ICE in supplement_binding_1, at cp/name-lookup.c:2702

[Bug c++/100659] New: [11/12 Regression] ICE in supplement_binding_1, at cp/name-lookup.c:2702

[gscfq@t-online.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100659

            Bug ID: 100659
           Summary: [11/12 Regression] ICE in supplement_binding_1, at
                    cp/name-lookup.c:2702
           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: ---

Changed between 20201108 and 20201115 :


$ cat z1.cc
template <typename> struct A
{
  A::E::V;
  enum { V };
};


$ g++-12-20210516 -c z1.cc
z1.cc:3:3: warning: access declarations are deprecated in favour of
using-declarations; suggestion: add the 'using' keyword [-Wdeprecated]
    3 |   A::E::V;
      |   ^
z1.cc:4:10: internal compiler error: Segmentation fault
    4 |   enum { V };
      |          ^
0xce3fcf crash_signal
        ../../gcc/toplev.c:327
0x75543c supplement_binding_1
        ../../gcc/cp/name-lookup.c:2702
0x759e06 supplement_binding
        ../../gcc/cp/name-lookup.c:2746
0x759e06 push_class_level_binding_1
        ../../gcc/cp/name-lookup.c:5549
0x759e06 push_class_level_binding(tree_node*, tree_node*)
        ../../gcc/cp/name-lookup.c:5567
0x759f7e pushdecl_class_level(tree_node*)
        ../../gcc/cp/name-lookup.c:5280
0x7eb4d7 finish_member_declaration(tree_node*)
        ../../gcc/cp/semantics.c:3468
0x6dda21 build_enumerator(tree_node*, tree_node*, tree_node*, tree_node*,
unsigned int)
        ../../gcc/cp/decl.c:16323
0x781d79 cp_parser_enumerator_definition
        ../../gcc/cp/parser.c:20284
0x781d79 cp_parser_enumerator_list
        ../../gcc/cp/parser.c:20213
0x781d79 cp_parser_enum_specifier
        ../../gcc/cp/parser.c:20143
0x781d79 cp_parser_type_specifier
        ../../gcc/cp/parser.c:18455
0x782246 cp_parser_decl_specifier_seq
        ../../gcc/cp/parser.c:15086
0x7a560a cp_parser_member_declaration
        ../../gcc/cp/parser.c:26003
0x77f7de cp_parser_member_specification_opt
        ../../gcc/cp/parser.c:25860
0x77f7de cp_parser_class_specifier_1
        ../../gcc/cp/parser.c:24932
0x781750 cp_parser_class_specifier
        ../../gcc/cp/parser.c:25248
0x781750 cp_parser_type_specifier
        ../../gcc/cp/parser.c:18485
0x782246 cp_parser_decl_specifier_seq
        ../../gcc/cp/parser.c:15086
0x7a43f5 cp_parser_single_declaration
        ../../gcc/cp/parser.c:30513

[Bug c++/100659] [11/12 Regression] ICE in supplement_binding_1, at cp/name-lookup.c:2702

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100659

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |11.2

[Bug c++/100659] [11/12 Regression] ICE in supplement_binding_1, at cp/name-lookup.c:2702 since r11-5003-gd50310408f54e380

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100659

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|                            |2021-05-19
     Ever confirmed|0                           |1
            Summary|[11/12 Regression] ICE in   |[11/12 Regression] ICE in
                   |supplement_binding_1, at    |supplement_binding_1, at
                   |cp/name-lookup.c:2702       |cp/name-lookup.c:2702 since
                   |                            |r11-5003-gd50310408f54e380
             Status|UNCONFIRMED                 |NEW
                 CC|                            |jason at gcc dot gnu.org,
                   |                            |marxin at gcc dot gnu.org

--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Confirmed, started with r11-5003-gd50310408f54e380.

[Bug c++/100659] [11/12 Regression] ICE in supplement_binding_1, at cp/name-lookup.c:2702 since r11-5003-gd50310408f54e380

[jason at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100659

Jason Merrill <jason at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Assignee|unassigned at gcc dot gnu.org      |jason at gcc dot gnu.org
             Status|NEW                         |ASSIGNED

[Bug c++/100659] [11/12 Regression] ICE in supplement_binding_1, at cp/name-lookup.c:2702 since r11-5003-gd50310408f54e380

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100659

--- Comment #2 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jason Merrill <jason@gcc.gnu.org>:

https://gcc.gnu.org/g:fe9a6614a16b5ea7f12141c50b6b7de984390ed8

commit r12-932-gfe9a6614a16b5ea7f12141c50b6b7de984390ed8
Author: Jason Merrill <jason@redhat.com>
Date:   Wed May 19 16:40:24 2021 -0400

    c++: ICE with using and enum [PR100659]

    Here the code for 'using enum' is confused by the combination of a
    using-decl and an enum that are not from 'using enum'; this CONST_DECL is
    from the normal unscoped enum scoping.

            PR c++/100659

    gcc/cp/ChangeLog:

            * cp-tree.h (CONST_DECL_USING_P): Check for null TREE_TYPE.

    gcc/testsuite/ChangeLog:

            * g++.dg/parse/access13.C: New test.

[Bug c++/100659] [11/12 Regression] ICE in supplement_binding_1, at cp/name-lookup.c:2702 since r11-5003-gd50310408f54e380

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100659

--- Comment #3 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-11 branch has been updated by Jason Merrill
<jason@gcc.gnu.org>:

https://gcc.gnu.org/g:8b7212ebb80e854c08274228627ce0a3061db6b0

commit r11-8443-g8b7212ebb80e854c08274228627ce0a3061db6b0
Author: Jason Merrill <jason@redhat.com>
Date:   Wed May 19 16:40:24 2021 -0400

    c++: ICE with using and enum [PR100659]

    Here the code for 'using enum' is confused by the combination of a
    using-decl and an enum that are not from 'using enum'; this CONST_DECL is
    from the normal unscoped enum scoping.

            PR c++/100659

    gcc/cp/ChangeLog:

            * cp-tree.h (CONST_DECL_USING_P): Check for null TREE_TYPE.

    gcc/testsuite/ChangeLog:

            * g++.dg/parse/access13.C: New test.

[Bug c++/100659] [11/12 Regression] ICE in supplement_binding_1, at cp/name-lookup.c:2702 since r11-5003-gd50310408f54e380

[jason at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100659

Jason Merrill <jason at gcc dot gnu.org> changed:

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

--- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed for 11.2/12.