[Bug c++/48749] New: internal compiler error: tree check: expected field_decl

[Bug c++/48749] New: internal compiler error: tree check: expected field_decl

[miles at gnu dot org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48749

           Summary: internal compiler error: tree check: expected
                    field_decl
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: miles@gnu.org


Created attachment 24088
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=24088
source code demonstrating bug

Compile the attached code with g++, and:

$ g++-snapshot -c ,barf.i.cc
,barf.i.cc: In member function 'virtual T CylinderMapTex<T>::eval(const
TexCoords&) const':
,barf.i.cc:46:16: internal compiler error: tree check: expected field_decl,
have identifier_node in fixed_type_or_null, at cp/class.c:5885
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-snapshot/README.Bugs> for instructions.

$ g++-snapshot --version
g++ (Debian 20110419-1) 4.7.0 20110419 (experimental) [trunk revision 172699]
Copyright (C) 2011 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Thanks,

-miles

[Bug c++/48749] [4.7 Regression] internal compiler error: tree check: expected field_decl

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48749

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|internal compiler error:    |[4.7 Regression] internal
                   |tree check: expected        |compiler error: tree check:
                   |field_decl                  |expected field_decl

--- Comment #1 from Paolo Carlini <paolo.carlini at oracle dot com> 2011-04-24 13:18:04 UTC ---
Looks like a regression in mainline.

[Bug c++/48749] [4.7 Regression] internal compiler error: tree check: expected field_decl

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48749

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2011.04.24 13:18:23
     Ever Confirmed|0                           |1

[Bug c++/48749] [4.7 Regression] internal compiler error: tree check: expected field_decl

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48749

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Version|unknown                     |4.7.0
   Target Milestone|---                         |4.7.0

[Bug c++/48749] [4.6/4.7 Regression] internal compiler error: tree check: expected field_decl

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48749

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P3                          |P1
                 CC|                            |jakub at gcc dot gnu.org,
                   |                            |jason at gcc dot gnu.org
   Target Milestone|4.7.0                       |4.6.1
            Summary|[4.7 Regression] internal   |[4.6/4.7 Regression]
                   |compiler error: tree check: |internal compiler error:
                   |expected field_decl         |tree check: expected
                   |                            |field_decl

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-05-04 08:54:07 UTC ---
Started with http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=171461
The patch has been backported to 4.6 branch as well and if built with
--enable-checking=yes, it ICEs there the same way.

In:
5880        case COMPONENT_REF:
5881          /* If this component is really a base class reference, then the
field
5882         itself isn't definitive.  */
5883          if (DECL_FIELD_IS_BASE (TREE_OPERAND (instance, 1)))
5884        return RECUR (TREE_OPERAND (instance, 0));
5885          return RECUR (TREE_OPERAND (instance, 1));

instance is a COMPONENT_REF with type Pos, TREE_OPERAND (instance, 0) is
INDIRECT_REF - *coords and TREE_OPERAND (instance, 1) is not FIELD_DECL, but
IDENTIFIER_NODE pos.

[Bug c++/48749] [4.6/4.7 Regression] internal compiler error: tree check: expected field_decl

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48749

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

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

[Bug c++/48749] [4.6/4.7 Regression] internal compiler error: tree check: expected field_decl

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48749

--- Comment #3 from Jason Merrill <jason at gcc dot gnu.org> 2011-05-05 02:20:17 UTC ---
Author: jason
Date: Thu May  5 02:20:12 2011
New Revision: 173412

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=173412
Log:
    PR c++/48749
    * class.c (resolves_to_fixed_type_p): Don't look closely
    in templates.

Added:
    trunk/gcc/testsuite/g++.dg/conversion/base1.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/class.c
    trunk/gcc/testsuite/ChangeLog

[Bug c++/48749] [4.6/4.7 Regression] internal compiler error: tree check: expected field_decl

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48749

--- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> 2011-05-05 02:51:06 UTC ---
Author: jason
Date: Thu May  5 02:51:01 2011
New Revision: 173414

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=173414
Log:
    PR c++/48749
    * class.c (resolves_to_fixed_type_p): Don't look closely
    in templates.

Added:
    branches/gcc-4_6-branch/gcc/testsuite/g++.dg/conversion/base1.C
Modified:
    branches/gcc-4_6-branch/gcc/cp/ChangeLog
    branches/gcc-4_6-branch/gcc/cp/class.c
    branches/gcc-4_6-branch/gcc/testsuite/ChangeLog

[Bug c++/48749] [4.6/4.7 Regression] internal compiler error: tree check: expected field_decl

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48749

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

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

--- Comment #5 from Jason Merrill <jason at gcc dot gnu.org> 2011-05-05 15:03:34 UTC ---
Fixed.