[Bug c++/25856] New: ICE segmentation fault on invalid code

[Bug c++/25856] New: ICE segmentation fault on invalid code

[wouter dot vermaelen at pi dot be]

The following invalid code triggers an 
   internal compiler error: Segmentation fault
I accidentally found this while reducing another testcase with the delta script
(and a faulty check.sh script), so I guess this has little real world
relevance. But still gcc shouldn't crash.

I can reproduce this with SVN version of 2006/01/18. 

---------------------
class A;
template<class T>
}
A::~A()
{
---------------------


-- 
           Summary: ICE segmentation fault on invalid code
           Product: gcc
           Version: 4.2.0
            Status: UNCONFIRMED
          Severity: minor
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: wouter dot vermaelen at pi dot be


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25856

[Bug c++/25856] [4.0/4.1/4.2 regression] ICE defining destructor for incomplete class

[reichelt at gcc dot gnu dot org]

------- Comment #1 from reichelt at gcc dot gnu dot org  2006-01-19 11:41 -------
Confirmed.
Here's something "less" invalid thar also causes an ICE:

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


-- 

reichelt at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |reichelt at gcc dot gnu dot
                   |                            |org
           Severity|minor                       |normal
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
           Keywords|                            |error-recovery, ice-on-
                   |                            |invalid-code, monitored
      Known to fail|                            |4.0.0 4.0.2 4.1.0 4.2.0
      Known to work|                            |3.4.5
   Last reconfirmed|0000-00-00 00:00:00         |2006-01-19 11:41:15
               date|                            |
            Summary|ICE segmentation fault on   |[4.0/4.1/4.2 regression] ICE
                   |invalid code                |defining destructor for
                   |                            |incomplete class
   Target Milestone|---                         |4.0.3


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25856

[Bug c++/25856] [4.0/4.1/4.2 regression] ICE defining destructor for incomplete class

[mmitchel at gcc dot gnu dot org]

-- 

mmitchel at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |mark at codesourcery dot com
                   |dot org                     |
             Status|NEW                         |ASSIGNED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25856

[Bug c++/25856] [4.0/4.1/4.2 regression] ICE defining destructor for incomplete class

[mmitchel at gcc dot gnu dot org]

------- Comment #2 from mmitchel at gcc dot gnu dot org  2006-01-22 00:41 -------
Subject: Bug 25856

Author: mmitchel
Date: Sun Jan 22 00:40:56 2006
New Revision: 110082

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=110082
Log:
        PR c++/25895
        * class.c (build_base_path): Generate a NOP_EXPR instead of a
        COMPONENT_REF if the base and derived classes are at the same
        address.
        PR c++/25856
        * decl.c (begin_destructor_body): Robustify.
        PR c++/25858 
        * parser.c (cp_parser_direct_declarator): Robustify.

        PR c++/25895
        * g++.dg/inherit/conv2.C: New test.
        PR c++/25856
        * g++.dg/parse/dtor7.C: New test.
        PR c++/25858
        * g++.dg/template/crash44.C: New test.

Added:
    branches/gcc-4_0-branch/gcc/testsuite/g++.dg/inherit/conv2.C
    branches/gcc-4_0-branch/gcc/testsuite/g++.dg/parse/dtor7.C
    branches/gcc-4_0-branch/gcc/testsuite/g++.dg/template/crash44.C
Modified:
    branches/gcc-4_0-branch/gcc/cp/ChangeLog
    branches/gcc-4_0-branch/gcc/cp/class.c
    branches/gcc-4_0-branch/gcc/cp/decl.c
    branches/gcc-4_0-branch/gcc/cp/parser.c
    branches/gcc-4_0-branch/gcc/testsuite/ChangeLog


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25856

[Bug c++/25856] [4.0/4.1/4.2 regression] ICE defining destructor for incomplete class

[mmitchel at gcc dot gnu dot org]

------- Comment #3 from mmitchel at gcc dot gnu dot org  2006-01-22 00:42 -------
Subject: Bug 25856

Author: mmitchel
Date: Sun Jan 22 00:41:58 2006
New Revision: 110083

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=110083
Log:
        PR c++/25895
        * class.c (build_base_path): Generate a NOP_EXPR instead of a
        COMPONENT_REF if the base and derived classes are at the same
        address.
        PR c++/25856
        * decl.c (begin_destructor_body): Robustify.
        PR c++/25858 
        * parser.c (cp_parser_direct_declarator): Robustify.

        PR c++/25895
        * g++.dg/inherit/conv2.C: New test.
        PR c++/25856
        * g++.dg/parse/dtor7.C: New test.
        PR c++/25858
        * g++.dg/template/crash44.C: New test.

Added:
    branches/gcc-4_1-branch/gcc/testsuite/g++.dg/inherit/conv2.C
    branches/gcc-4_1-branch/gcc/testsuite/g++.dg/parse/dtor7.C
    branches/gcc-4_1-branch/gcc/testsuite/g++.dg/template/crash44.C
Modified:
    branches/gcc-4_1-branch/gcc/cp/ChangeLog
    branches/gcc-4_1-branch/gcc/cp/class.c
    branches/gcc-4_1-branch/gcc/cp/decl.c
    branches/gcc-4_1-branch/gcc/cp/parser.c
    branches/gcc-4_1-branch/gcc/testsuite/ChangeLog


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25856

[Bug c++/25856] [4.0/4.1/4.2 regression] ICE defining destructor for incomplete class

[mmitchel at gcc dot gnu dot org]

------- Comment #4 from mmitchel at gcc dot gnu dot org  2006-01-22 00:42 -------
Subject: Bug 25856

Author: mmitchel
Date: Sun Jan 22 00:42:40 2006
New Revision: 110084

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=110084
Log:
        PR c++/25895
        * class.c (build_base_path): Generate a NOP_EXPR instead of a
        COMPONENT_REF if the base and derived classes are at the same
        address.
        PR c++/25856
        * decl.c (begin_destructor_body): Robustify.
        PR c++/25858 
        * parser.c (cp_parser_direct_declarator): Robustify.

        PR c++/25895
        * g++.dg/inherit/conv2.C: New test.
        PR c++/25856
        * g++.dg/parse/dtor7.C: New test.
        PR c++/25858
        * g++.dg/template/crash44.C: New test.

Added:
    trunk/gcc/testsuite/g++.dg/inherit/conv2.C
    trunk/gcc/testsuite/g++.dg/parse/dtor7.C
    trunk/gcc/testsuite/g++.dg/template/crash44.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/class.c
    trunk/gcc/cp/decl.c
    trunk/gcc/cp/parser.c
    trunk/gcc/testsuite/ChangeLog


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25856

[Bug c++/25856] [4.0/4.1/4.2 regression] ICE defining destructor for incomplete class

[mmitchel at gcc dot gnu dot org]

------- Comment #5 from mmitchel at gcc dot gnu dot org  2006-01-22 00:52 -------
Fixed in 4.0.3.


-- 

mmitchel at gcc dot gnu dot org changed:

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25856