From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 81C513858D35; Fri, 16 Jun 2023 11:30:59 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 81C513858D35 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1686915059; bh=Y4zBVSSw04w9GBMQprdflHyzhDNiaVpUfUZHwKBAOa4=; h=From:To:Subject:Date:In-Reply-To:References:From; b=WlqMBwqShbXCRhI4sGROFhyYbcOizVVZJVv1pafoo+hpCj8yBLyR42hVmQ0i0oDWZ fisEbJByiMTrRIYGx2nYmFkpkddo739CzaVVNReG/WDEviv79CfrRoJ3OS6mlYhxZI /Tt3OKLt76zF4Cu1Nbwupr2ict4QnP/pJ72Fq384= From: "19373742 at buaa dot edu.cn" To: gcc-bugs@gcc.gnu.org Subject: [Bug middle-end/110281] wrong code with '-O3' Date: Fri, 16 Jun 2023 11:30:59 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: middle-end X-Bugzilla-Version: 11.4.1 X-Bugzilla-Keywords: wrong-code X-Bugzilla-Severity: normal X-Bugzilla-Who: 19373742 at buaa dot edu.cn 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: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 List-Id: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D110281 --- Comment #7 from CTC <19373742 at buaa dot edu.cn> --- (In reply to Jakub Jelinek from comment #6) > That requires detailed analysis nobody performed yet. csmith is known to > generate invalid programs sometimes, especially with some options, and on= ly > such analysis can give definite answers. Though, two independent compile= rs > behaving the same and -fno-strict-aliasing option making it go away is a > strong indication it could very well be a bug in the generated testcase. Thanks very much for your explanation!=