[Bug c++/46282] New: [4.6 Regression] ICE: SIGSEGV in grokbitfield (decl2.c:1054) in C++0x mode on invalid code

[Bug c++/46282] New: [4.6 Regression] ICE: SIGSEGV in grokbitfield (decl2.c:1054) in C++0x mode on invalid code

[zsojka at seznam dot cz]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46282

           Summary: [4.6 Regression] ICE: SIGSEGV in grokbitfield
                    (decl2.c:1054) in C++0x mode on invalid code
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: minor
          Priority: P3
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: zsojka@seznam.cz


---- testcase.C ----
template<int>
class A
{
  A : i() {}
  int i;
};
--------------------

Related valgrind output:
$ gcc testcase.C -std=c++0x
testcase.C:4:9: error: there are no arguments to 'i' that depend on a template
parameter, so a declaration of 'i' must be available [-fpermissive]
testcase.C:4:9: note: (if you use '-fpermissive', G++ will accept your code,
but allowing the use of an undeclared name is deprecated)
==10499== Invalid read of size 2
==10499==    at 0x55336E: grokbitfield (decl2.c:1054)
==10499==    by 0x59013B: cp_parser_member_declaration (parser.c:17645)
==10499==    by 0x572F13: cp_parser_type_specifier (parser.c:17392)
==10499==    by 0x574787: cp_parser_decl_specifier_seq (parser.c:9890)
==10499==    by 0x58CACA: cp_parser_single_declaration (parser.c:19787)
==10499==    by 0x58D04D: cp_parser_template_declaration_after_export
(parser.c:19700)
==10499==    by 0x591DA9: cp_parser_declaration (parser.c:9369)
==10499==    by 0x5904B9: cp_parser_declaration_seq_opt (parser.c:9299)
==10499==    by 0x592144: c_parse_file (parser.c:3432)
==10499==    by 0x667B69: c_common_parse_file (c-opts.c:1162)
==10499==    by 0x9D42FF: toplev_main (toplev.c:919)
==10499==    by 0x6376BBC: (below main) (in /lib64/libc-2.11.2.so)
==10499==  Address 0x0 is not stack'd, malloc'd or (recently) free'd
==10499== 
testcase.C:4:9: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

Tested revisions:
r166210 - crash
r166153 - OK

[Bug c++/46282] [4.6 Regression] [C++0x] ICE: SIGSEGV in grokbitfield (decl2.c:1054)

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46282

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |ice-on-invalid-code
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2010.11.03 00:25:57
            Summary|[4.6 Regression] ICE:       |[4.6 Regression] [C++0x]
                   |SIGSEGV in grokbitfield     |ICE: SIGSEGV in
                   |(decl2.c:1054) in C++0x     |grokbitfield (decl2.c:1054)
                   |mode on invalid code        |
     Ever Confirmed|0                           |1

[Bug c++/46282] [4.6 Regression] [C++0x] ICE: SIGSEGV in grokbitfield (decl2.c:1054)

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46282

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |4.6.0

[Bug c++/46282] [4.6 Regression] [C++0x] ICE: SIGSEGV in grokbitfield (decl2.c:1054)

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46282

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |error-recovery
           Priority|P3                          |P4
                 CC|                            |jakub at gcc dot gnu.org

[Bug c++/46282] [4.6 Regression] [C++0x] ICE: SIGSEGV in grokbitfield (decl2.c:1054)

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46282

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

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

[Bug c++/46282] [4.6 Regression] [C++0x] ICE: SIGSEGV in grokbitfield (decl2.c:1054)

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46282

--- Comment #1 from Jason Merrill <jason at gcc dot gnu.org> 2011-03-01 22:44:30 UTC ---
Author: jason
Date: Tue Mar  1 22:44:26 2011
New Revision: 170600

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=170600
Log:
    PR c++/46282
    * decl2.c (grokbitfield): Handle type-dependent width.

Added:
    trunk/gcc/testsuite/g++.dg/cpp0x/regress/bitfield-err1.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/decl2.c
    trunk/gcc/testsuite/ChangeLog

[Bug c++/46282] [4.6 Regression] [C++0x] ICE: SIGSEGV in grokbitfield (decl2.c:1054)

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46282

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

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

--- Comment #2 from Jason Merrill <jason at gcc dot gnu.org> 2011-03-01 22:46:57 UTC ---
Fixed.