[Bug c++/51223] New: [4.5/4.6/4.7 Regression] ICE with invalid function parameter

[Bug c++/51223] New: [4.5/4.6/4.7 Regression] ICE with invalid function parameter

[reichelt at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51223

             Bug #: 51223
           Summary: [4.5/4.6/4.7 Regression] ICE with invalid function
                    parameter
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: minor
          Priority: P3
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: reichelt@gcc.gnu.org


The following invalid code snippet triggers an ICE since GCC 4.5.0:

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

void bar()
{
  A().foo();
}

A A::foo(void i)
{
  return A();
}
==========================

bug.cc:3:18: error: 'i' has incomplete type
bug.cc:3:19: error: invalid use of 'void'
bug.cc: In function 'void bar()':
bug.cc:8:11: error: call to 'A A::foo(<type error>)' uses the default argument
for parameter 1, which is not yet defined
bug.cc: At global scope:
bug.cc:11:15: error: 'i' has incomplete type
bug.cc:11:16: error: invalid use of 'void'
bug.cc: In function 'void bar()':
bug.cc:8:11: internal compiler error: tree check: expected class 'type', have
'exceptional' (error_mark) in useless_type_conversion_p, at tree-ssa.c:1460
Please submit a full bug report, [etc.]

[Bug c++/51223] [4.5/4.6/4.7 Regression] ICE with invalid function parameter

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51223

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |4.5.4

[Bug c++/51223] [4.5/4.6/4.7 Regression] ICE with invalid function parameter

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51223

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P3                          |P5

[Bug c++/51223] [4.5/4.6/4.7 Regression] ICE with invalid function parameter

[pinskia at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51223

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2012-01-01
                 CC|                            |pinskia at gcc dot gnu.org
     Ever Confirmed|0                           |1

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> 2012-01-01 22:13:38 UTC ---
Confirmed.

[Bug c++/51223] [4.5/4.6/4.7 Regression] ICE with invalid function parameter

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51223

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
         AssignedTo|unassigned at gcc dot       |paolo.carlini at oracle dot
                   |gnu.org                     |com

--- Comment #2 from Paolo Carlini <paolo.carlini at oracle dot com> 2012-01-23 18:40:23 UTC ---
On it.

[Bug c++/51223] [4.5/4.6/4.7 Regression] ICE with invalid function parameter

[paolo at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51223

--- Comment #3 from paolo at gcc dot gnu.org <paolo at gcc dot gnu.org> 2012-01-24 10:39:08 UTC ---
Author: paolo
Date: Tue Jan 24 10:39:03 2012
New Revision: 183472

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=183472
Log:
/cp
2012-01-24  Paolo Carlini  <paolo.carlini@oracle.com>

    PR c++/51223
    * call.c (build_over_call): Check for error_mark_node as
    TREE_VALUE when default arguments are processed.

/testsuite
2012-01-24  Paolo Carlini  <paolo.carlini@oracle.com>

    PR c++/51223
    * g++.dg/parse/crash58.C: New.

Added:
    trunk/gcc/testsuite/g++.dg/parse/crash58.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/call.c
    trunk/gcc/testsuite/ChangeLog

[Bug c++/51223] [4.5/4.6 Regression] ICE with invalid function parameter

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51223

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED
   Target Milestone|4.5.4                       |4.7.0
            Summary|[4.5/4.6/4.7 Regression]    |[4.5/4.6 Regression] ICE
                   |ICE with invalid function   |with invalid function
                   |parameter                   |parameter

--- Comment #4 from Paolo Carlini <paolo.carlini at oracle dot com> 2012-01-24 10:41:00 UTC ---
Fixed for 4.7.0.