[Bug c++/27496] New: ICE on broken templated friend

[Bug c++/27496] New: ICE on broken templated friend

[reichelt at gcc dot gnu dot org]

The following invalid code snippet causes an ICE since GCC 3.0:

===================================
template<int> struct A
{
    template<void> friend class X;
};

A<0> a;
===================================

bug.cc:3: error: 'void' is not a valid type for a template constant parameter
bug.cc: In instantiation of 'A<0>':
bug.cc:6:   instantiated from here
bug.cc:3: error: 'void' is not a valid type for a template constant parameter
bug.cc:3: internal compiler error: tree check: expected tree that contains
'decl common' structure, have 'error_mark'  in tsubst_friend_class, at
cp/pt.c:5443
Please submit a full bug report, [etc.]

GCC 2.95.3 wrongly accepted the code.


-- 
           Summary: ICE on broken templated friend
           Product: gcc
           Version: 4.2.0
            Status: UNCONFIRMED
          Keywords: ice-on-invalid-code, error-recovery, monitored
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: reichelt at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27496

[Bug c++/27496] ICE on broken templated friend

[reichelt at gcc dot gnu dot org]

------- Comment #1 from reichelt at gcc dot gnu dot org  2006-05-08 15:38 -------
Testing a patch.


-- 

reichelt at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |reichelt at gcc dot gnu dot
                   |dot org                     |org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27496

[Bug c++/27496] ICE on broken templated friend

[pinskia at gcc dot gnu dot org]

------- Comment #2 from pinskia at gcc dot gnu dot org  2006-05-08 15:46 -------
Confirmed.


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2006-05-08 15:46:05
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27496

[Bug c++/27496] ICE on broken templated friend

[patchapp at dberlin dot org]

------- Comment #3 from patchapp at dberlin dot org  2006-05-09 14:51 -------
Subject: Bug number PR c++/27496

A patch for this bug has been added to the patch tracker.
The mailing list url for the patch is
http://gcc.gnu.org/ml/gcc-patches/2006-05/msg00333.html


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27496

[Bug c++/27496] ICE on broken templated friend

[reichelt at gcc dot gnu dot org]

------- Comment #4 from reichelt at gcc dot gnu dot org  2006-05-15 08:52 -------
Subject: Bug 27496

Author: reichelt
Date: Mon May 15 08:52:29 2006
New Revision: 113776

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=113776
Log:
        PR c++/27496
        * pt.c (tsubst_friend_class): Return early on invalid friend
        declarations.

        * g++.dg/template/void2.C: New test.

Added:
    trunk/gcc/testsuite/g++.dg/template/void2.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/pt.c
    trunk/gcc/testsuite/ChangeLog


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27496

[Bug c++/27496] ICE on broken templated friend

[reichelt at gcc dot gnu dot org]

------- Comment #5 from reichelt at gcc dot gnu dot org  2006-05-15 09:00 -------
Fixed on mainline.


-- 

reichelt at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED
   Target Milestone|---                         |4.2.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27496

[Bug c++/27496] ICE on broken templated friend

[patchapp at dberlin dot org]

------- Comment #6 from patchapp at dberlin dot org  2006-05-15 19:37 -------
Subject: Bug number PR c++/27496

A patch for this bug has been added to the patch tracker.
The mailing list url for the patch is
http://gcc.gnu.org/ml/gcc-patches/2006-05/msg00333.html


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27496