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// The LLVM Compiler Infrastructure
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
// UNSUPPORTED: c++98, c++03, c++11
// XFAIL: gcc-7
// <functional>
// equal_to, not_equal_to, less, et al.
// Test that these types can be constructed w/o an initializer in a constexpr
// context. This is specifically testing
#include <functional>
#include "test_macros.h"
template <class T>
constexpr bool test_constexpr_context() {
std::equal_to<T> eq;
std::not_equal_to<T> neq;
std::less<T> l;
std::less_equal<T> le;
std::greater<T> g;
std::greater_equal<T> ge;
return true;
static_assert(test_constexpr_context<int>(), "");
static_assert(test_constexpr_context<void>(), "");
int main() {