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 1ECAD3858D20; Thu, 28 Mar 2024 20:08:24 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 1ECAD3858D20
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org;
	s=default; t=1711656504;
	bh=T/Lh1FzHEPQmPs4WgxM/xsdrIM4sE3T7dxKZJo6Ek0M=;
	h=From:To:Subject:Date:From;
	b=Q51d+lK9o5upKGstNzoDT9BlnO768ZdiP//QPKgXcSoXt35x47BusBrA5+1isRSGX
	 iVF0qGhzJHsS8Jytb7uEVaUXzDWHqnw8SXW91Zna2lTAGZPytV29nxbsDK8oAF5Xr3
	 tEmS8KFUnh+fL8zK/WpgQwGW9qePgvWJysXELn0s=
From: "dragonroot at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/114525] New: Incorrect code generated when setting a value
 through a pointer-to-member on a ternary returning an object reference
Date: Thu, 28 Mar 2024 20:08:23 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: new
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: c++
X-Bugzilla-Version: 14.0
X-Bugzilla-Keywords: 
X-Bugzilla-Severity: normal
X-Bugzilla-Who: dragonroot at gmail dot com
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: bug_id short_desc product version bug_status
 bug_severity priority component assigned_to reporter target_milestone
Message-ID: <bug-114525-4@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=3D114525

            Bug ID: 114525
           Summary: Incorrect code generated when setting a value through
                    a pointer-to-member on a ternary returning an object
                    reference
           Product: gcc
           Version: 14.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: dragonroot at gmail dot com
  Target Milestone: ---

The following program incorrectly outputs 1 on every GCC I've tried (via
godbolt.org), while every clang version there correctly outputs 2.

=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
#include <stdio.h>

struct Foo
{
  int x;
};

Foo & get( Foo & v )
{
  return v;
}

int main()
{
  Foo v;

  v.x =3D 1;

  bool cond =3D true;

  ( cond ? get( v ) : get( v ) ).*( &Foo::x ) =3D 2;

  // Should output 2, but outputs 1
  printf( "%d\n", v.x );
}
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=