| //===----------------------------------------------------------------------===// |
| // |
| // 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 |
| |
| // alignment_of |
| |
| #include <type_traits> |
| #include <cstdint> |
| |
| #include "test_macros.h" |
| |
| template <class T, unsigned A> |
| void test_alignment_of() |
| { |
| const unsigned AlignofResult = TEST_ALIGNOF(T); |
| static_assert( AlignofResult == A, "Golden value does not match result of alignof keyword"); |
| static_assert( std::alignment_of<T>::value == AlignofResult, ""); |
| static_assert( std::alignment_of<T>::value == A, ""); |
| static_assert( std::alignment_of<const T>::value == A, ""); |
| static_assert( std::alignment_of<volatile T>::value == A, ""); |
| static_assert( std::alignment_of<const volatile T>::value == A, ""); |
| #if TEST_STD_VER > 14 |
| static_assert( std::alignment_of_v<T> == A, ""); |
| static_assert( std::alignment_of_v<const T> == A, ""); |
| static_assert( std::alignment_of_v<volatile T> == A, ""); |
| static_assert( std::alignment_of_v<const volatile T> == A, ""); |
| #endif |
| } |
| |
| class Class |
| { |
| public: |
| ~Class(); |
| }; |
| |
| int main(int, char**) |
| { |
| test_alignment_of<int&, 4>(); |
| test_alignment_of<Class, 1>(); |
| test_alignment_of<int*, sizeof(intptr_t)>(); |
| test_alignment_of<const int*, sizeof(intptr_t)>(); |
| test_alignment_of<char[3], 1>(); |
| test_alignment_of<int, 4>(); |
| // The test case below is a hack. It's hard to detect what golden value |
| // we should expect. In most cases it should be 8. But in i386 builds |
| // with Clang >= 8 or GCC >= 8 the value is '4'. |
| test_alignment_of<double, TEST_ALIGNOF(double)>(); |
| #if (defined(__ppc__) && !defined(__ppc64__)) |
| test_alignment_of<bool, 4>(); // 32-bit PPC has four byte bool |
| #else |
| test_alignment_of<bool, 1>(); |
| #endif |
| test_alignment_of<unsigned, 4>(); |
| |
| return 0; |
| } |