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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
//
//===----------------------------------------------------------------------===//
// <array>
// template <class T, size_t N >
// struct array
// Test the size and alignment matches that of an array of a given type.
#include <array>
#include <iterator>
#include <type_traits>
#include <cstddef>
#include "test_macros.h"
template <class T, size_t Size>
struct MyArray {
T elems[Size];
};
template <class T, size_t Size>
void test() {
typedef T CArrayT[Size == 0 ? 1 : Size];
typedef std::array<T, Size> ArrayT;
typedef MyArray<T, Size == 0 ? 1 : Size> MyArrayT;
static_assert(sizeof(ArrayT) == sizeof(CArrayT), "");
static_assert(sizeof(ArrayT) == sizeof(MyArrayT), "");
static_assert(TEST_ALIGNOF(ArrayT) == TEST_ALIGNOF(MyArrayT), "");
#if defined(_LIBCPP_VERSION)
ArrayT a;
((void)a);
static_assert(sizeof(ArrayT) == sizeof(a.__elems_), "");
static_assert(TEST_ALIGNOF(ArrayT) == __alignof__(a.__elems_), "");
#endif
}
template <class T>
void test_type() {
test<T, 1>();
test<T, 42>();
test<T, 0>();
}
struct TEST_ALIGNAS(TEST_ALIGNOF(std::max_align_t) * 2) TestType1 {
};
struct TEST_ALIGNAS(TEST_ALIGNOF(std::max_align_t) * 2) TestType2 {
char data[1000];
};
//static_assert(sizeof(void*) == 4, "");
int main(int, char**) {
test_type<char>();
test_type<int>();
test_type<double>();
test_type<long double>();
test_type<std::max_align_t>();
test_type<TestType1>();
test_type<TestType2>();
return 0;
}
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