You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
47 lines
1.1 KiB
C++
47 lines
1.1 KiB
C++
//===----------------------------------------------------------------------===//
|
|
//
|
|
// 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 <class T>
|
|
// struct hash
|
|
// : public unary_function<T, size_t>
|
|
// {
|
|
// size_t operator()(T val) const;
|
|
// };
|
|
|
|
#include <system_error>
|
|
#include <cassert>
|
|
#include <type_traits>
|
|
|
|
#include "test_macros.h"
|
|
|
|
void
|
|
test(int i)
|
|
{
|
|
typedef std::error_code T;
|
|
typedef std::hash<T> H;
|
|
static_assert((std::is_same<H::argument_type, T>::value), "" );
|
|
static_assert((std::is_same<H::result_type, std::size_t>::value), "" );
|
|
ASSERT_NOEXCEPT(H()(T()));
|
|
H h;
|
|
T ec(i, std::system_category());
|
|
const std::size_t result = h(ec);
|
|
LIBCPP_ASSERT(result == static_cast<std::size_t>(i));
|
|
((void)result); // Prevent unused warning
|
|
}
|
|
|
|
int main(int, char**)
|
|
{
|
|
test(0);
|
|
test(2);
|
|
test(10);
|
|
|
|
return 0;
|
|
}
|