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// Copyright (C) 2015-2018 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/>.
// { dg-do compile { target c++11 } }
#include <functional>
struct A {
void foo(int) { }
};
void
test01()
{
// PR libstdc++/59768
A a;
auto ref = std::ref(a);
std::__invoke(&A::foo, ref, 100); // lvalue
std::__invoke(&A::foo, std::move(ref), 100); // rvalue
const auto refc = std::ref(a);
std::__invoke(&A::foo, refc, 100); // const lvalue
std::__invoke(&A::foo, std::move(refc), 100); // const rvalue
}
struct B {
int bar = 0;
};
void
test02()
{
B b;
// Invocation through a reference_wrapper means the object is an lvalue.
int* ptr [[gnu::unused]];
auto ref = std::ref(b);
ptr = &std::__invoke(&B::bar, ref);
ptr = &std::__invoke(&B::bar, std::move(ref));
const int* cptr [[gnu::unused]];
auto cref = std::cref(b);
cptr = &std::__invoke(&B::bar, cref);
cptr = &std::__invoke(&B::bar, std::move(cref));
}
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