From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugs-return-337839-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 4237 invoked by alias); 20 Nov 2010 16:28:16 -0000
Received: (qmail 4225 invoked by uid 22791); 20 Nov 2010 16:28:14 -0000
X-SWARE-Spam-Status: No, hits=-2.8 required=5.0	tests=ALL_TRUSTED,AWL,BAYES_00
X-Spam-Check-By: sourceware.org
Received: from localhost (HELO gcc.gnu.org) (127.0.0.1)    by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Sat, 20 Nov 2010 16:28:08 +0000
From: "janus at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/46581] New: [4.6 Regression] [OOP] segfault in SELECT TYPE with associate-name
X-Bugzilla-Reason: CC
X-Bugzilla-Type: new
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: fortran
X-Bugzilla-Keywords:
X-Bugzilla-Severity: normal
X-Bugzilla-Who: janus at gcc dot gnu.org
X-Bugzilla-Status: UNCONFIRMED
X-Bugzilla-Priority: P3
X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org
X-Bugzilla-Target-Milestone: ---
X-Bugzilla-Changed-Fields:
Message-ID: <bug-46581-4@http.gcc.gnu.org/bugzilla/>
X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/
Auto-Submitted: auto-generated
Content-Type: text/plain; charset="UTF-8"
MIME-Version: 1.0
Date: Sat, 20 Nov 2010 16:30:00 -0000
Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm
Precedence: bulk
List-Id: <gcc-bugs.gcc.gnu.org>
List-Archive: <http://gcc.gnu.org/ml/gcc-bugs/>
List-Post: <mailto:gcc-bugs@gcc.gnu.org>
List-Help: <mailto:gcc-bugs-help@gcc.gnu.org>
Sender: gcc-bugs-owner@gcc.gnu.org
X-SW-Source: 2010-11/txt/msg02572.txt.bz2

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46581

           Summary: [4.6 Regression] [OOP] segfault in SELECT TYPE with
                    associate-name
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: janus@gcc.gnu.org


Reported by Salvatore at http://gcc.gnu.org/ml/fortran/2010-11/msg00290.html.

Reduced test case:


program bug23
  implicit none

  type :: t1
    integer, allocatable :: ja(:)
  end type

  class(t1), allocatable  :: a 

  allocate(a)

  select type (aa=>a)
  type is (t1)
    write(*,*) 'Allocation status: ',allocated(aa%ja)
  end select

end program bug23


This compiles, but fails at runtime with a segfault.

It was working at r166401 (and r166825?), but fails at r166914. Possibly a
regression of r166480.

Note: With 4.5 it fails at runtime with a 'double free' error, after correctly
printing "Allocation status:  F".