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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, c++14
// <system_error>
// template <class T> constexpr bool is_error_condition_enum_v;
#include <system_error>
#include <type_traits>
#include "test_macros.h"
template <bool Expected, class T>
void
test()
{
static_assert((std::is_error_condition_enum<T>::value == Expected), "");
#if TEST_STD_VER > 14
static_assert((std::is_error_condition_enum_v<T> == Expected), "");
#endif
}
class A {
A();
operator std::error_condition () const { return std::error_condition(); }
};
// Specialize the template for my class
namespace std
{
template <>
struct is_error_condition_enum<A> : public std::true_type {};
}
int main()
{
test<false, void>();
test<false, int>();
test<false, std::nullptr_t>();
test<false, std::string>();
test<true, A>();
}
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