From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 4090 invoked by alias); 6 Feb 2015 13:33:03 -0000 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 Received: (qmail 27162 invoked by uid 48); 6 Feb 2015 13:32:59 -0000 From: "burnus at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug fortran/64958] Warn if INTENT(IN) is changed by passing to no-intent argument Date: Fri, 06 Feb 2015 13:33:00 -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: 5.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: enhancement 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-Flags: X-Bugzilla-Changed-Fields: cc Message-ID: In-Reply-To: References: 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: 2015-02/txt/msg00571.txt.bz2 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64958 Tobias Burnus changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |burnus at gcc dot gnu.org --- Comment #2 from Tobias Burnus --- How is this supposed to work? I think in general, it is not that simple to test for it. Or do you want to restrict it to scalar numeric intrinsic types - and create a shadow variable? Even that might not work with optimization as we tell the middle end that the variable doesn't change - and it might then in some cases simply optimize the check away.