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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// <functional>
// template<Returnable R, class T> unspecified mem_fn(R T::* pm);
#include <functional>
#include <cassert>
struct A
{
double data_;
};
template <class F>
void
test(F f)
{
{
A a;
f(a) = 5;
assert(a.data_ == 5);
A* ap = &a;
f(ap) = 6;
assert(a.data_ == 6);
const A* cap = ap;
assert(f(cap) == f(ap));
f(cap) = 7;
}
}
int main(int, char**)
{
test(std::mem_fn(&A::data_));
return 0;
}
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