From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id ECE633858283; Wed, 28 Sep 2022 12:56:08 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org ECE633858283 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1664369768; bh=ARBBfDZFUy2Tv6DjpK/5oFW+xsNf2E/iKJOxIDs+LDE=; h=From:To:Subject:Date:In-Reply-To:References:From; b=f0zo4c0u130xrbQyiqH4Ygu3oOW2WpgE5LJlBb+0TGfJtEP/4fPSbzElsqA+lw8FR FUmiDjBTM3XTO0o0jfayP9VqclHKf9Sxx+OOzK+1oskbJUJ7WqV6w98sMHf4VZru3s Kt/vjlLFeixXT7Tk7L7koSduC8m6ipse7YIx5Jvs= From: "pinskia at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/107066] Field initialized before ctor is mis-optimized away by DSE Date: Wed, 28 Sep 2022 12:56:08 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: tree-optimization X-Bugzilla-Version: unknown X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: pinskia at gcc dot gnu.org X-Bugzilla-Status: RESOLVED X-Bugzilla-Resolution: INVALID 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: resolution bug_status 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=3D107066 Andrew Pinski changed: What |Removed |Added ---------------------------------------------------------------------------- Resolution|--- |INVALID Status|UNCONFIRMED |RESOLVED --- Comment #1 from Andrew Pinski --- You need -fno-lifetime-dse as documented https://gcc.gnu.org/onlinedocs/gcc-12.2.0/gcc/Optimize-Options.html#index-f= lifetime-dse C++ is defined this way otherwise.=