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// -*- 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
//
//===----------------------------------------------------------------------===//
// Test that _LIBCPP_ALIGNOF acts the same as the C++11 keyword `alignof`, and
// not as the GNU extension `__alignof`. The former returns the minimal required
// alignment for a type, whereas the latter returns the preferred alignment.
//
// See llvm.org/PR39713
#include <type_traits>
#include "test_macros.h"
template <class T>
void test() {
static_assert(_LIBCPP_ALIGNOF(T) == std::alignment_of<T>::value, "");
static_assert(_LIBCPP_ALIGNOF(T) == TEST_ALIGNOF(T), "");
#if TEST_STD_VER >= 11
static_assert(_LIBCPP_ALIGNOF(T) == alignof(T), "");
#endif
#ifdef TEST_COMPILER_CLANG
static_assert(_LIBCPP_ALIGNOF(T) == _Alignof(T), "");
#endif
}
int main() {
test<int>();
test<long long>();
test<double>();
test<long double>();
}
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