[Bug c++/35747] New: [4.3/4.4 regression] ICE with undefined variable in statement expression

[Bug c++/35747] New: [4.3/4.4 regression] ICE with undefined variable in statement expression

[reichelt at gcc dot gnu dot org]

The following invalid code snippets triggers an ICE since GCC 4.3.0:

=================================
void foo()
{
  ({ i; ({ i; }); 0; });
}
=================================

bug.cc: In function 'void foo()':
bug.cc:3: error: 'i' was not declared in this scope
gimplification failed:
 <statement_list 0x402277c4
    type <void_type 0x401a94e0 void VOID
        align 8 symtab 0 alias set -1 canonical type 0x401a94e0
        pointer_to_this <pointer_type 0x401a9548>>
    head (nil) tail (nil) stmts
>
bug.cc:3: internal compiler error: gimplification failed
Please submit a full bug report, [etc.]


-- 
           Summary: [4.3/4.4 regression] ICE with undefined variable in
                    statement expression
           Product: gcc
           Version: 4.4.0
            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=35747

[Bug c++/35747] [4.3/4.4 regression] ICE with undefined variable in statement expression

[reichelt at gcc dot gnu dot org]

-- 

reichelt at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |4.3.1


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35747

[Bug c++/35747] [4.3/4.4 regression] ICE with undefined variable in statement expression

[pinskia at gcc dot gnu dot org]

------- Comment #1 from pinskia at gcc dot gnu dot org  2008-03-30 00:52 -------
Confirmed, only happens with the C++ front-end.


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2008-03-30 00:52:26
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35747

[Bug c++/35747] [4.3/4.4 regression] ICE with undefined variable in statement expression

[jakub at gcc dot gnu dot org]

-- 

jakub at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P3                          |P2


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35747

[Bug c++/35747] [4.3/4.4 regression] ICE with undefined variable in statement expression

[jakub at gcc dot gnu dot org]

------- Comment #2 from jakub at gcc dot gnu dot org  2008-04-22 13:12 -------
Apparently missing pop_stmt_list during error handling.


-- 

jakub at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |jakub at gcc dot gnu dot org
                   |dot org                     |
             Status|NEW                         |ASSIGNED
   Last reconfirmed|2008-03-30 00:52:26         |2008-04-22 13:12:19
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35747

[Bug c++/35747] [4.3/4.4 regression] ICE with undefined variable in statement expression

[jakub at gcc dot gnu dot org]

------- Comment #3 from jakub at gcc dot gnu dot org  2008-04-22 22:07 -------
Subject: Bug 35747

Author: jakub
Date: Tue Apr 22 22:06:58 2008
New Revision: 134567

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=134567
Log:
        PR c++/35747
        * semantics.c (finish_stmt_expr): Call pop_stmt_list even if the stmt
        expression is errorneous.

        * g++.dg/ext/stmtexpr13.C: New test.

Added:
    trunk/gcc/testsuite/g++.dg/ext/stmtexpr13.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/semantics.c
    trunk/gcc/testsuite/ChangeLog


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35747

[Bug c++/35747] [4.3/4.4 regression] ICE with undefined variable in statement expression

[jakub at gcc dot gnu dot org]

------- Comment #4 from jakub at gcc dot gnu dot org  2008-04-22 22:15 -------
Subject: Bug 35747

Author: jakub
Date: Tue Apr 22 22:14:25 2008
New Revision: 134568

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=134568
Log:
        PR c++/35747
        * semantics.c (finish_stmt_expr): Call pop_stmt_list even if the stmt
        expression is errorneous.

        * g++.dg/ext/stmtexpr13.C: New test.

Added:
    branches/gcc-4_3-branch/gcc/testsuite/g++.dg/ext/stmtexpr13.C
Modified:
    branches/gcc-4_3-branch/gcc/cp/ChangeLog
    branches/gcc-4_3-branch/gcc/cp/semantics.c
    branches/gcc-4_3-branch/gcc/testsuite/ChangeLog


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35747

[Bug c++/35747] [4.3/4.4 regression] ICE with undefined variable in statement expression

[jakub at gcc dot gnu dot org]

------- Comment #5 from jakub at gcc dot gnu dot org  2008-04-22 22:21 -------
Fixed.


-- 

jakub at gcc dot gnu dot org changed:

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35747