From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id B4AF23858C20; Mon, 14 Aug 2023 09:34:06 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org B4AF23858C20 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1692005646; bh=xhXxelD7zdrB61OrYFV/3MMrxE2pma6Dp1CJ/veDZnY=; h=From:To:Subject:Date:In-Reply-To:References:From; b=tsr9XjXvzamAP+9/YL8bkEYIoaf5I4sjbX60Y39mJBviCQw5xrIPmz6liBC6cYDca 0TQmjPIEzSfm5YlUY+yVPaW0LhVbFT21uRC/i4hfhy/GYzUJfrwgy45zArez1M28gK q9tDBg7gXOb5LhRSW4EDzbVZNEtWvVfxCewuikAA= From: "amonakov at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug middle-end/111009] [12/13/14 regression] -fno-strict-overflow erroneously elides null pointer checks and causes SIGSEGV on perf from linux-6.4.10 Date: Mon, 14 Aug 2023 09:34:05 +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: 14.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: amonakov at gcc dot gnu.org 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: cc 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=3D111009 Alexander Monakov changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |amonakov at gcc dot gnu.org --- Comment #1 from Alexander Monakov --- Triggered by GIMPLE loop invariant motion lifting a_9 =3D &dso_8(D)->maj; across a (dso !=3D NULL) test.=