From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugs-return-381429-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 14619 invoked by alias); 27 Jan 2012 10:12:30 -0000
Received: (qmail 14608 invoked by uid 22791); 27 Jan 2012 10:12:29 -0000
X-SWARE-Spam-Status: No, hits=-2.9 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; Fri, 27 Jan 2012 10:12:16 +0000
From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/52016] New: [OOP] Polymorphism and elemental: missing diagnostic
Date: Fri, 27 Jan 2012 10:18:00 -0000
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: dominiq at lps dot ens.fr
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-52016-4@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
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: 2012-01/txt/msg03104.txt.bz2

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52016

             Bug #: 52016
           Summary: [OOP] Polymorphism and elemental: missing diagnostic
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: dominiq@lps.ens.fr


This PR is probably a duplicate of pr52013 with a fix before submission (see
http://gcc.gnu.org/ml/fortran/2012-01/msg00224.html ;-).

While investigating why the test in pr50981 comment #23 was yielding an ICE
even with the patch from http://gcc.gnu.org/ml/fortran/2012-01/msg00223.html ,
I reduced the origin of the ICE to the following test

    type t
      integer :: a
    end type t
  type(t), allocatable :: var1, var2(:)
  allocate(var1, var2(2))
  call sub_ctae(var2)
 if (any (var2%a /= 9)) call abort()

contains
  elemental subroutine sub_ctae(y)
    class(t), intent(inout), optional :: y(:) ! <-- invalid and gives an ICE
!    class(t), intent(inout), optional :: y ! <-- valid and works
    if (present(y)) y%a = 9
    if (present(y)) i = 7
  end subroutine sub_ctae
end

which gives

pr50981_4_red.f90: In function 'sub_ctae':
pr50981_4_red.f90:13:0: internal compiler error: in
gfc_conv_descriptor_data_get, at fortran/trans-array.c:147

for an unpatched r183306 and

pr50981_4_red.f90: In function 'MAIN__':
pr50981_4_red.f90:6:0: internal compiler error: in fold_convert_loc, at
fold-const.c:2016

for my patched tree.