From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugzilla@gcc.gnu.org>
Received: by sourceware.org (Postfix, from userid 48)
	id 82ED4385C413; Fri, 30 Sep 2022 16:55:06 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 82ED4385C413
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org;
	s=default; t=1664556907;
	bh=wYcUXYJ/w2FN1pDXk1wJOX9des1xWPrFJUOyQZb/Biw=;
	h=From:To:Subject:Date:In-Reply-To:References:From;
	b=j/kUCw+jz/f89Tyzwn/wQxWKwcQBRxzvZ9zGr8QnS6ttUkt9vWc4BbRaERug2dZcL
	 WW5w7TSOy5g+yN96oMOdRHat56KcVMWN+V6hqigFnVrn+KG5gKxUVD4X1+JgnchA0b
	 1siBEnKOaMYVTaxeHCn98fFUvABdtcAAPfNsbFp0=
From: "dan at stahlke dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/105329] [12/13 Regression] Bogus restrict
 warning when assigning 1-char string literal to std::string since
 r12-3347-g8af8abfbbace49e6
Date: Fri, 30 Sep 2022 16:55:02 +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: 12.0
X-Bugzilla-Keywords: diagnostic, missed-optimization
X-Bugzilla-Severity: normal
X-Bugzilla-Who: dan at stahlke dot org
X-Bugzilla-Status: NEW
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P2
X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org
X-Bugzilla-Target-Milestone: 12.3
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: cc
Message-ID: <bug-105329-4-mhonx2XXAa@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-105329-4@http.gcc.gnu.org/bugzilla/>
References: <bug-105329-4@http.gcc.gnu.org/bugzilla/>
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: <gcc-bugs.sourceware.org>

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D105329

Dan Stahlke <dan at stahlke dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |dan at stahlke dot org

--- Comment #24 from Dan Stahlke <dan at stahlke dot org> ---
Here is another test case, broken on 12.2 with "-std=3Dc++20 -Wrestrict -O3=
" but
working on trunk and working on 12.2 with -O2 rather than -O3.

#include <string>
#include <tuple> // std::ignore

int main()
{
    std::string s =3D "b";
    std::ignore =3D "a" + std::move(s);
}=