From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 79487 invoked by alias); 23 Jul 2015 08:03:05 -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 79336 invoked by uid 48); 23 Jul 2015 08:03:00 -0000 From: "glaubitz at physik dot fu-berlin.de" To: gcc-bugs@gcc.gnu.org Subject: [Bug target/66930] [5 Regression]: gengtype.c is miscompiled during stage2 Date: Thu, 23 Jul 2015 08:03:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: target X-Bugzilla-Version: 5.2.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: glaubitz at physik dot fu-berlin.de 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: 5.3 X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: 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: 2015-07/txt/msg01959.txt.bz2 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66930 --- Comment #7 from John Paul Adrian Glaubitz --- (In reply to Kazumoto Kojima from comment #6) > Created attachment 36040 [details] > .i file for gengtype.c > > I've confirmed a miscompile for gengtype.c with -O1 on my 5/6 > compilers. Just for confirmation. Removing -O1 and defaulting to -O2 again lets the current gcc-5 snapshot build past this particular issue. Interesting that this is triggered with -O1 and not -O2. I'd expected that to be the other way around. > BTW, I guess that > > > * Build with -O1 on sh4 (try to work around PR target/66358). > > will open a can of worms :-) What do you mean? Using -O1 will trigger all kinds of bugs? Or is it rather about PR target/66358? Adrian