| 1 | //===----------------------------------------------------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | // type_traits |
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| 10 | |
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| 11 | // is_standard_layout |
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| 12 | |
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| 13 | #include <type_traits> |
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| 14 | #include "test_macros.h" |
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| 15 | |
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| 16 | template <class T> |
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| 17 | void test_is_standard_layout() |
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| 18 | { |
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| 19 | static_assert( std::is_standard_layout<T>::value, "" ); |
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| 20 | static_assert( std::is_standard_layout<const T>::value, "" ); |
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| 21 | static_assert( std::is_standard_layout<volatile T>::value, "" ); |
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| 22 | static_assert( std::is_standard_layout<const volatile T>::value, "" ); |
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| 23 | #if TEST_STD_VER > 14 |
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| 24 | static_assert( std::is_standard_layout_v<T>, "" ); |
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| 25 | static_assert( std::is_standard_layout_v<const T>, "" ); |
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| 26 | static_assert( std::is_standard_layout_v<volatile T>, "" ); |
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| 27 | static_assert( std::is_standard_layout_v<const volatile T>, "" ); |
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| 28 | #endif |
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| 29 | } |
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| 30 | |
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| 31 | template <class T> |
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| 32 | void test_is_not_standard_layout() |
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| 33 | { |
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| 34 | static_assert(!std::is_standard_layout<T>::value, "" ); |
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| 35 | static_assert(!std::is_standard_layout<const T>::value, "" ); |
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| 36 | static_assert(!std::is_standard_layout<volatile T>::value, "" ); |
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| 37 | static_assert(!std::is_standard_layout<const volatile T>::value, "" ); |
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| 38 | #if TEST_STD_VER > 14 |
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| 39 | static_assert(!std::is_standard_layout_v<T>, "" ); |
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| 40 | static_assert(!std::is_standard_layout_v<const T>, "" ); |
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| 41 | static_assert(!std::is_standard_layout_v<volatile T>, "" ); |
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| 42 | static_assert(!std::is_standard_layout_v<const volatile T>, "" ); |
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| 43 | #endif |
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| 44 | } |
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| 45 | |
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| 46 | template <class T1, class T2> |
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| 47 | struct pair |
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| 48 | { |
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| 49 | T1 first; |
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| 50 | T2 second; |
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| 51 | }; |
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| 52 | |
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| 53 | int main(int, char**) |
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| 54 | { |
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| 55 | test_is_standard_layout<int> (); |
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| 56 | test_is_standard_layout<int[3]> (); |
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| 57 | test_is_standard_layout<pair<int, double> > (); |
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| 58 | |
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| 59 | test_is_not_standard_layout<int&> (); |
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| 60 | |
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| 61 | return 0; |
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| 62 | } |
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| 63 | |
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