| 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 | |
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| 10 | // <type_traits> |
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| 11 | |
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| 12 | // __libcpp_is_constant_evaluated() |
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| 13 | |
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| 14 | // returns false when there's no constant evaluation support from the compiler. |
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| 15 | // as well as when called not in a constexpr context |
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| 16 | |
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| 17 | #include <type_traits> |
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| 18 | #include <cassert> |
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| 19 | |
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| 20 | #include "test_macros.h" |
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| 21 | |
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| 22 | int main (int, char**) { |
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| 23 | ASSERT_SAME_TYPE(decltype(std::__libcpp_is_constant_evaluated()), bool); |
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| 24 | ASSERT_NOEXCEPT(std::__libcpp_is_constant_evaluated()); |
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| 25 | |
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| 26 | #if !defined(_LIBCPP_CXX03_LANG) |
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| 27 | static_assert(std::__libcpp_is_constant_evaluated(), "" ); |
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| 28 | #endif |
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| 29 | |
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| 30 | bool p = std::__libcpp_is_constant_evaluated(); |
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| 31 | assert(!p); |
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| 32 | |
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| 33 | return 0; |
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| 34 | } |
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| 35 | |
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