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// { dg-options "-std=gnu++11" }
// { dg-do compile }
// Copyright (C) 2012-2016 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
// PR libstdc++/55463 Passing rvalue objects to std::mem_fn
#include <functional>
struct X
{
int& func();
char& func_c() const;
short& func_v() volatile;
double& func_cv() const volatile;
int data;
};
struct Y : X { };
using CX = const X;
using CY = const Y;
using X_ptr = X*;
struct smart_ptr
{
X& operator*() const;
};
std::reference_wrapper<X> ref();
std::reference_wrapper<const X> cref();
std::reference_wrapper<Y> yref();
void test01()
{
int& i1 __attribute__((unused)) = std::mem_fn( &X::func )( X() );
int& i2 __attribute__((unused)) = std::mem_fn( &X::func )( Y() );
int& i3 __attribute__((unused)) = std::mem_fn( &X::func )( ref() );
int& i4 __attribute__((unused)) = std::mem_fn( &X::func )( yref() );
int& i5 __attribute__((unused)) = std::mem_fn( &X::func )( X_ptr() );
int& i6 __attribute__((unused)) = std::mem_fn( &X::func )( smart_ptr() );
char& c1 __attribute__((unused)) = std::mem_fn( &X::func_c )( X() );
char& c2 __attribute__((unused)) = std::mem_fn( &X::func_c )( CX() );
char& c3 __attribute__((unused)) = std::mem_fn( &X::func_c )( Y() );
char& c4 __attribute__((unused)) = std::mem_fn( &X::func_c )( ref() );
char& c5 __attribute__((unused)) = std::mem_fn( &X::func_c )( cref() );
char& c6 __attribute__((unused)) = std::mem_fn( &X::func_c )( yref() );
char& c7 __attribute__((unused)) = std::mem_fn( &X::func_c )( X_ptr() );
char& c8 __attribute__((unused)) = std::mem_fn( &X::func_c )( smart_ptr() );
short& s1 __attribute__((unused)) = std::mem_fn( &X::func_v )( X() );
short& s2 __attribute__((unused)) = std::mem_fn( &X::func_v )( Y() );
short& s3 __attribute__((unused)) = std::mem_fn( &X::func_v )( ref() );
short& s4 __attribute__((unused)) = std::mem_fn( &X::func_v )( yref() );
short& s5 __attribute__((unused)) = std::mem_fn( &X::func_v )( X_ptr() );
short& s6 __attribute__((unused)) = std::mem_fn( &X::func_v )( smart_ptr() );
double& d1 __attribute__((unused)) = std::mem_fn( &X::func_cv )( X() );
double& d2 __attribute__((unused)) = std::mem_fn( &X::func_cv )( CX() );
double& d3 __attribute__((unused)) = std::mem_fn( &X::func_cv )( Y() );
double& d4 __attribute__((unused)) = std::mem_fn( &X::func_cv )( ref() );
double& d5 __attribute__((unused)) = std::mem_fn( &X::func_cv )( cref() );
double& d6 __attribute__((unused)) = std::mem_fn( &X::func_cv )( yref() );
double& d7 __attribute__((unused)) = std::mem_fn( &X::func_cv )( X_ptr() );
double& d8 __attribute__((unused))
= std::mem_fn( &X::func_cv )( smart_ptr() );
// [expr.mptr.oper]
// The result of a .* expression whose second operand is a pointer to a
// data member is of the same value category (3.10) as its first operand.
int&& rval __attribute__((unused)) = std::mem_fn( &X::data )( X() );
const int&& crval __attribute__((unused)) = std::mem_fn( &X::data )( CX() );
int&& yrval __attribute__((unused)) = std::mem_fn( &X::data )( Y() );
const int&& ycrval __attribute__((unused)) = std::mem_fn( &X::data )( CY() );
int& val __attribute__((unused)) = std::mem_fn( &X::data )( ref() );
const int& cval __attribute__((unused)) = std::mem_fn( &X::data )( cref() );
int& yval __attribute__((unused)) = std::mem_fn( &X::data )( yref() );
int& pval __attribute__((unused)) = std::mem_fn( &X::data )( X_ptr() );
int& sval __attribute__((unused)) = std::mem_fn( &X::data )( smart_ptr() );
}
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