From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugs-return-431192-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 3343 invoked by alias); 6 Oct 2013 15:42:20 -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 3290 invoked by uid 48); 6 Oct 2013 15:42:16 -0000
From: "burnus at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/58226] negative subscript pos at fortran/options.c:1205
Date: Sun, 06 Oct 2013 15:42:00 -0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: fortran
X-Bugzilla-Version: 4.8.2
X-Bugzilla-Keywords:
X-Bugzilla-Severity: normal
X-Bugzilla-Who: burnus at gcc dot gnu.org
X-Bugzilla-Status: NEW
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_status cc
Message-ID: <bug-58226-4-X3krcXeWQA@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-58226-4@http.gcc.gnu.org/bugzilla/>
References: <bug-58226-4@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: 2013-10/txt/msg00336.txt.bz2

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58226

Tobias Burnus <burnus at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|WAITING                     |NEW
                 CC|                            |burnus at gcc dot gnu.org

--- Comment #3 from Tobias Burnus <burnus at gcc dot gnu.org> ---
Also works for me as I have "-mtune=generic -march=x86-64" by default.

Code wise, I think one should do something like the following:

--- options.c   (Revision 203206)
+++ options.c   (Arbeitskopie)
@@ -1139,6 +1139,10 @@ gfc_get_option_string (void)
   size_t len, pos;
   char *result;

+  /* Allocate and return a one-character string with '\0'.  */ 
+  if (!save_decoded_options_count)
+    return = XCNEWVEC (char, 1);
+
   /* Determine required string length.  */

   len = 0;