[Bug c++/58700] New: [4.8/4.9 Regression] ICE declaring static bit-field

[Bug c++/58700] New: [4.8/4.9 Regression] ICE declaring static bit-field

[reichelt at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58700

            Bug ID: 58700
           Summary: [4.8/4.9 Regression] ICE declaring static bit-field
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: reichelt at gcc dot gnu.org

The following invalid code snippet triggers an ICE since GCC 4.8.0:

=====================
struct A
{
  static int : 4;
};
=====================

bug.cc:3:16: internal compiler error: Segmentation fault
   static int : 4;
                ^
0xb15dff crash_signal
        ../../gcc/gcc/toplev.c:335
0x5831a7 grokdeclarator(cp_declarator const*, cp_decl_specifier_seq*,
decl_context, int, tree_node**)
        ../../gcc/gcc/cp/decl.c:10642
0x617fcd grokbitfield(cp_declarator const*, cp_decl_specifier_seq*, tree_node*,
tree_node*)
        ../../gcc/gcc/cp/decl2.c:1043
0x660ba6 cp_parser_member_declaration
        ../../gcc/gcc/cp/parser.c:20031
0x6402c7 cp_parser_member_specification_opt
        ../../gcc/gcc/cp/parser.c:19726
0x6402c7 cp_parser_class_specifier_1
        ../../gcc/gcc/cp/parser.c:18970
0x6402c7 cp_parser_class_specifier
        ../../gcc/gcc/cp/parser.c:19197
0x6402c7 cp_parser_type_specifier
        ../../gcc/gcc/cp/parser.c:14144
0x65924f cp_parser_decl_specifier_seq
        ../../gcc/gcc/cp/parser.c:11389
0x65fd89 cp_parser_simple_declaration
        ../../gcc/gcc/cp/parser.c:10979
0x643860 cp_parser_block_declaration
        ../../gcc/gcc/cp/parser.c:10928
0x66aaae cp_parser_declaration
        ../../gcc/gcc/cp/parser.c:10825
0x6697ca cp_parser_declaration_seq_opt
        ../../gcc/gcc/cp/parser.c:10711
0x66b0e6 cp_parser_translation_unit
        ../../gcc/gcc/cp/parser.c:3989
0x66b0e6 c_parse_file()
        ../../gcc/gcc/cp/parser.c:30962
0x787f73 c_common_parse_file()
        ../../gcc/gcc/c-family/c-opts.c:1046
Please submit a full bug report, [etc.]

GCC 4.7.x issued a suitable error message instead:

bug.cc:3:16: error: static member '<anonymous>' cannot be a bit-field

[Bug c++/58700] [4.8/4.9 Regression] ICE declaring static bit-field

[reichelt at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58700

Volker Reichelt <reichelt at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |ice-on-invalid-code
      Known to work|                            |4.7.0
   Target Milestone|---                         |4.8.2
      Known to fail|                            |4.8.0, 4.9.0

[Bug c++/58700] [4.8/4.9 Regression] ICE declaring static bit-field

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58700

Paolo Carlini <paolo.carlini at oracle dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2013-10-13
           Assignee|unassigned at gcc dot gnu.org      |paolo.carlini at oracle dot com
     Ever confirmed|0                           |1

--- Comment #1 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Mine.

[Bug c++/58700] [4.8/4.9 Regression] ICE declaring static bit-field

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58700

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|4.8.2                       |4.8.3

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 4.8.2 has been released.

[Bug c++/58700] [4.8/4.9 Regression] ICE declaring static bit-field

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58700

--- Comment #3 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Pending patch here: http://gcc.gnu.org/ml/gcc-patches/2013-10/msg00880.html

[Bug c++/58700] [4.8/4.9 Regression] ICE declaring static bit-field

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58700

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

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

[Bug c++/58700] [4.8/4.9 Regression] ICE declaring static bit-field

[paolo at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58700

--- Comment #4 from paolo at gcc dot gnu.org <paolo at gcc dot gnu.org> ---
Author: paolo
Date: Tue Nov 26 11:31:46 2013
New Revision: 205389

URL: http://gcc.gnu.org/viewcvs?rev=205389&root=gcc&view=rev
Log:
/cp
2013-11-26  Paolo Carlini  <paolo.carlini@oracle.com>

    PR c++/58700
    * decl.c (grokdeclarator): Don't try to pass declarator->id_loc
    to build_lang_decl_loc when declarator is null.

/testsuite
2013-11-26  Paolo Carlini  <paolo.carlini@oracle.com>

    PR c++/58700
    * g++.dg/parse/bitfield4.C: New.

Added:
    trunk/gcc/testsuite/g++.dg/parse/bitfield4.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/decl.c
    trunk/gcc/testsuite/ChangeLog

[Bug c++/58700] [4.8 Regression] ICE declaring static bit-field

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58700

Paolo Carlini <paolo.carlini at oracle dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|---                         |FIXED
           Assignee|paolo.carlini at oracle dot com    |unassigned at gcc dot gnu.org
   Target Milestone|4.8.3                       |4.9.0
            Summary|[4.8/4.9 Regression] ICE    |[4.8 Regression] ICE
                   |declaring static bit-field  |declaring static bit-field

--- Comment #5 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Fixed for 4.9.0.