From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugs-return-498384-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 76702 invoked by alias); 30 Sep 2015 10:58:40 -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
Received: (qmail 76666 invoked by uid 48); 30 Sep 2015 10:58:36 -0000
From: "arjen.markus895 at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/67779] New: Strange ordering with strings in extended object
Date: Wed, 30 Sep 2015 10:58:00 -0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: new
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: fortran
X-Bugzilla-Version: 4.9.3
X-Bugzilla-Keywords:
X-Bugzilla-Severity: normal
X-Bugzilla-Who: arjen.markus895 at gmail dot com
X-Bugzilla-Status: UNCONFIRMED
X-Bugzilla-Resolution:
X-Bugzilla-Priority: P3
X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org
X-Bugzilla-Target-Milestone: ---
X-Bugzilla-Flags:
X-Bugzilla-Changed-Fields: bug_id short_desc product version bug_status bug_severity priority component assigned_to reporter target_milestone attachments.created
Message-ID: <bug-67779-4@http.gcc.gnu.org/bugzilla/>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: 7bit
X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/
Auto-Submitted: auto-generated
MIME-Version: 1.0
X-SW-Source: 2015-09/txt/msg02362.txt.bz2

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67779

            Bug ID: 67779
           Summary: Strange ordering with strings in extended object
           Product: gcc
           Version: 4.9.3
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: arjen.markus895 at gmail dot com
  Target Milestone: ---

Created attachment 36421
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36421&action=edit
Source file demonstrating the problem

The attached program constructs a small array of integers and strings and then
sorts them. The output is:
 Sorting ...
 Result:
           1
           2
           3
           4
           5
           6
           7
           8
           9
          10
 String = 10         
 String = 1          
 String = 2          
 String = 3          
 String = 4          
 String = 5          
 String = 6          
 String = 7          
 String = 8          
 String = 9           

What is unexpected is the fact that "String = 10" comes before "String = 1". I
have not been able to reduce the code (other than removing the derived type
with integers) and still exhibit the odd ordering. The ten integers show that
the quicksort routine does its job, though. When comparing the strings in a
small program, "String = 10" definitely comes after "String = 1" as I would
expect.