[Bug c++/47904] New: [4.5/4.6 Regression] ICE with DECL_PARM_INDEX (this) in cp_tree_equal

[Bug c++/47904] New: [4.5/4.6 Regression] ICE with DECL_PARM_INDEX (this) in cp_tree_equal

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47904

           Summary: [4.5/4.6 Regression] ICE with DECL_PARM_INDEX (this)
                    in cp_tree_equal
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: jakub@gcc.gnu.org
                CC: jason@gcc.gnu.org


The following testcase ICEs starting with:
http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=149223
- PR40619 fix, both in C++98 and -std=c++0x modes:

template <bool>
struct S
{
};

template <class T>
class U
{
  T t;
  int foo () const
  {
    S <sizeof (t) == 1> s;
    return 1;
  }
  int bar () const
  {
    S <sizeof (t) == 1> s;
    return 1;
  }
};

[Bug c++/47904] [4.5/4.6 Regression] ICE with DECL_PARM_INDEX (this) in cp_tree_equal

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47904

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to work|                            |4.4.5
   Target Milestone|---                         |4.6.0
      Known to fail|                            |4.5.2, 4.6.0

[Bug c++/47904] [4.5/4.6 Regression] ICE with DECL_PARM_INDEX (this) in cp_tree_equal

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47904

--- Comment #1 from Jason Merrill <jason at gcc dot gnu.org> 2011-02-27 08:13:32 UTC ---
Author: jason
Date: Sun Feb 27 08:13:28 2011
New Revision: 170533

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=170533
Log:
    PR c++/47904
    * tree.c (cp_tree_equal): Compare DECL_PARM_LEVEL.
    * pt.c (iterative_hash_template_arg): And hash it.

Added:
    trunk/gcc/testsuite/g++.dg/template/this-targ1.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/pt.c
    trunk/gcc/cp/tree.c
    trunk/gcc/testsuite/ChangeLog

[Bug c++/47904] [4.5 Regression] ICE with DECL_PARM_INDEX (this) in cp_tree_equal

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47904

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2011.02.27 15:14:21
      Known to work|                            |4.6.0
            Summary|[4.5/4.6 Regression] ICE    |[4.5 Regression] ICE with
                   |with DECL_PARM_INDEX (this) |DECL_PARM_INDEX (this) in
                   |in cp_tree_equal            |cp_tree_equal
     Ever Confirmed|0                           |1
      Known to fail|4.6.0                       |

--- Comment #2 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-02-27 15:14:21 UTC ---
Fixed on trunk sofar.

[Bug c++/47904] [4.5 Regression] ICE with DECL_PARM_INDEX (this) in cp_tree_equal

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47904

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|4.6.0                       |4.5.3

[Bug c++/47904] [4.5 Regression] ICE with DECL_PARM_INDEX (this) in cp_tree_equal

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47904

--- Comment #3 from Jason Merrill <jason at gcc dot gnu.org> 2011-02-27 17:11:22 UTC ---
Author: jason
Date: Sun Feb 27 17:11:19 2011
New Revision: 170544

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=170544
Log:
    PR c++/47904
    * tree.c (cp_tree_equal) [PARM_DECL]: Don't crash on
    DECL_ARTIFICIAL parms.

Added:
    branches/gcc-4_5-branch/gcc/testsuite/g++.dg/template/this-targ1.C
Modified:
    branches/gcc-4_5-branch/gcc/cp/ChangeLog
    branches/gcc-4_5-branch/gcc/cp/tree.c
    branches/gcc-4_5-branch/gcc/testsuite/ChangeLog

[Bug c++/47904] [4.5 Regression] ICE with DECL_PARM_INDEX (this) in cp_tree_equal

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47904

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED
   Target Milestone|4.5.3                       |4.6.0

--- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> 2011-02-27 17:11:52 UTC ---
Fixed in 4.5 as well.

[Bug c++/47904] [4.5 Regression] ICE with DECL_PARM_INDEX (this) in cp_tree_equal

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47904

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|4.6.0                       |4.5.3