From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 3092 invoked by alias); 10 Nov 2011 10:01:56 -0000 Received: (qmail 3080 invoked by uid 22791); 10 Nov 2011 10:01:54 -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; Thu, 10 Nov 2011 10:01:41 +0000 From: "burnus at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug fortran/51073] _gfortran_caf_register incorrectly assumes malloc(0) returns non-NULL Date: Thu, 10 Nov 2011 10:14:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: fortran X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: burnus 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: In-Reply-To: References: 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: List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org X-SW-Source: 2011-11/txt/msg01056.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51073 --- Comment #2 from Tobias Burnus 2011-11-10 10:01:36 UTC --- I think the size == 0 issue can only happen for static ("save") coarrays such as integer, save :: caf(1:0)[*] print *, size(caf) end For allocatable coarrays, one always allocates at least a single byte. Thus, it should be done in the front end for performance reasons (size is known at the compile time and it is a rather special case). Regarding the RTEMS failures: I somehow doubt that they are related to this issue. I think there should be no size-zero test case for coarrays.