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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
//
//===----------------------------------------------------------------------===//
// type_traits
// aligned_union<size_t Len, class ...Types>
// Issue 3034 added:
// The member typedef type shall be a trivial standard-layout type.
#include <type_traits>
#include "test_macros.h"
int main(int, char**)
{
{
typedef std::aligned_union<10, char >::type T1;
#if TEST_STD_VER > 11
ASSERT_SAME_TYPE(T1, std::aligned_union_t<10, char>);
#endif
static_assert(std::is_trivial<T1>::value, "");
static_assert(std::is_standard_layout<T1>::value, "");
static_assert(std::alignment_of<T1>::value == 1, "");
static_assert(sizeof(T1) == 10, "");
}
{
typedef std::aligned_union<10, short >::type T1;
#if TEST_STD_VER > 11
ASSERT_SAME_TYPE(T1, std::aligned_union_t<10, short>);
#endif
static_assert(std::is_trivial<T1>::value, "");
static_assert(std::is_standard_layout<T1>::value, "");
static_assert(std::alignment_of<T1>::value == 2, "");
static_assert(sizeof(T1) == 10, "");
}
{
typedef std::aligned_union<10, int >::type T1;
#if TEST_STD_VER > 11
ASSERT_SAME_TYPE(T1, std::aligned_union_t<10, int>);
#endif
static_assert(std::is_trivial<T1>::value, "");
static_assert(std::is_standard_layout<T1>::value, "");
static_assert(std::alignment_of<T1>::value == 4, "");
static_assert(sizeof(T1) == 12, "");
}
{
typedef std::aligned_union<10, double >::type T1;
#if TEST_STD_VER > 11
ASSERT_SAME_TYPE(T1, std::aligned_union_t<10, double>);
#endif
static_assert(std::is_trivial<T1>::value, "");
static_assert(std::is_standard_layout<T1>::value, "");
static_assert(std::alignment_of<T1>::value == 8, "");
static_assert(sizeof(T1) == 16, "");
}
{
typedef std::aligned_union<10, short, char >::type T1;
#if TEST_STD_VER > 11
ASSERT_SAME_TYPE(T1, std::aligned_union_t<10, short, char>);
#endif
static_assert(std::is_trivial<T1>::value, "");
static_assert(std::is_standard_layout<T1>::value, "");
static_assert(std::alignment_of<T1>::value == 2, "");
static_assert(sizeof(T1) == 10, "");
}
{
typedef std::aligned_union<10, char, short >::type T1;
#if TEST_STD_VER > 11
ASSERT_SAME_TYPE(T1, std::aligned_union_t<10, char, short>);
#endif
static_assert(std::is_trivial<T1>::value, "");
static_assert(std::is_standard_layout<T1>::value, "");
static_assert(std::alignment_of<T1>::value == 2, "");
static_assert(sizeof(T1) == 10, "");
}
{
typedef std::aligned_union<2, int, char, short >::type T1;
#if TEST_STD_VER > 11
ASSERT_SAME_TYPE(T1, std::aligned_union_t<2, int, char, short>);
#endif
static_assert(std::is_trivial<T1>::value, "");
static_assert(std::is_standard_layout<T1>::value, "");
static_assert(std::alignment_of<T1>::value == 4, "");
static_assert(sizeof(T1) == 4, "");
}
{
typedef std::aligned_union<2, char, int, short >::type T1;
#if TEST_STD_VER > 11
ASSERT_SAME_TYPE(T1, std::aligned_union_t<2, char, int, short>);
#endif
static_assert(std::is_trivial<T1>::value, "");
static_assert(std::is_standard_layout<T1>::value, "");
static_assert(std::alignment_of<T1>::value == 4, "");
static_assert(sizeof(T1) == 4, "");
}
{
typedef std::aligned_union<2, char, short, int >::type T1;
#if TEST_STD_VER > 11
ASSERT_SAME_TYPE(T1, std::aligned_union_t<2, char, short, int>);
#endif
static_assert(std::is_trivial<T1>::value, "");
static_assert(std::is_standard_layout<T1>::value, "");
static_assert(std::alignment_of<T1>::value == 4, "");
static_assert(sizeof(T1) == 4, "");
}
return 0;
}
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