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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	[thread overview]
Message-ID: <bug-114525-4@http.gcc.gnu.org/bugzilla/> (raw)

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114525

            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.

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

struct Foo
{
  int x;
};

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

int main()
{
  Foo v;

  v.x = 1;

  bool cond = true;

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

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

             reply	other threads:[~2024-03-28 20:08 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-03-28 20:08 dragonroot at gmail dot com [this message]
2024-03-28 20:17 ` [Bug c++/114525] " pinskia at gcc dot gnu.org
2024-03-28 20:22 ` [Bug c++/114525] [11/12/13/14 Regression] " pinskia at gcc dot gnu.org
2024-04-02  8:35 ` rguenth at gcc dot gnu.org

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