[Bug c++/51619] New: [c++0x] [4.6/4.7 Regression] ICE with array class member

[Bug c++/51619] New: [c++0x] [4.6/4.7 Regression] ICE with array class member

[reichelt at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51619

             Bug #: 51619
           Summary: [c++0x] [4.6/4.7 Regression] ICE with array class
                    member
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: reichelt@gcc.gnu.org


The following valid code snippet triggers an ICE since GCC 4.6.0 when compiled
with "-std=c++0x":

===================
struct A
{
  virtual ~A();
};

struct B
{ 
  A a[1][1];
};

B b;
===================

bug.cc:11:3:   in constexpr expansion of 'b.B::B()'
bug.cc:11:3: internal compiler error: Segmentation fault
Please submit a full bug report, [etc.]

[Bug c++/51619] [c++0x] [4.6/4.7 Regression] ICE with array class member

[reichelt at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51619

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |ice-on-valid-code
   Target Milestone|---                         |4.6.3

[Bug c++/51619] [c++0x] [4.6/4.7 Regression] ICE with array class member

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51619

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2011-12-19
         AssignedTo|unassigned at gcc dot       |jakub at gcc dot gnu.org
                   |gnu.org                     |
     Ever Confirmed|0                           |1

--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-12-19 10:20:37 UTC ---
Created attachment 26135
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=26135
gcc47-pr51619.patch

Untested fix.

[Bug c++/51619] [c++0x] [4.6/4.7 Regression] ICE with array class member

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51619

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-12-19 15:38:09 UTC ---
Author: jakub
Date: Mon Dec 19 15:38:06 2011
New Revision: 182485

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=182485
Log:
    PR c++/51619
    * semantics.c (cxx_eval_vec_init_1): If init is NULL for
    multidimensional array, just set eltinit to NULL_TREE.

    * g++.dg/cpp0x/pr51619.C: New test.

Added:
    trunk/gcc/testsuite/g++.dg/cpp0x/pr51619.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/semantics.c
    trunk/gcc/testsuite/ChangeLog

[Bug c++/51619] [c++0x] [4.6 Regression] ICE with array class member

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51619

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[c++0x] [4.6/4.7            |[c++0x] [4.6 Regression]
                   |Regression] ICE with array  |ICE with array class member
                   |class member                |

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-12-19 15:48:05 UTC ---
Fixed on the trunk so far.  On the branch the PR49924 changes look very
different between trunk and 4.6, so I wonder what exactly to do.  Perhaps guard
the else if (!init) code with else if (!init && TREE_CODE (elttype) !=
ARRAY_TYPE) instead?

[Bug c++/51619] [c++0x] [4.6 Regression] ICE with array class member

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51619

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|4.6.3                       |4.6.4

--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-03-01 14:38:37 UTC ---
GCC 4.6.3 is being released.

[Bug c++/51619] [c++0x] [4.6 Regression] ICE with array class member

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51619

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED
   Target Milestone|4.6.4                       |4.7.0

--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> 2013-04-12 16:17:45 UTC ---
The 4.6 branch has been closed, fixed in GCC 4.7.0.