| 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 | // UNSUPPORTED: c++03, c++11 |
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| 10 | |
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| 11 | // <functional> |
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| 12 | |
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| 13 | // equal_to, not_equal_to, less, et al. |
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| 14 | |
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| 15 | // Test that these types can be constructed w/o an initializer in a constexpr |
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| 16 | // context. This is specifically testing gcc.gnu.org/PR83921 |
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| 17 | |
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| 18 | |
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| 19 | #include <functional> |
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| 20 | #include "test_macros.h" |
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| 21 | |
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| 22 | template <class T> |
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| 23 | constexpr bool test_constexpr_context() { |
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| 24 | std::equal_to<T> eq; |
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| 25 | ((void)eq); |
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| 26 | std::not_equal_to<T> neq; |
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| 27 | ((void)neq); |
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| 28 | std::less<T> l; |
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| 29 | ((void)l); |
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| 30 | std::less_equal<T> le; |
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| 31 | ((void)le); |
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| 32 | std::greater<T> g; |
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| 33 | ((void)g); |
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| 34 | std::greater_equal<T> ge; |
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| 35 | ((void)ge); |
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| 36 | return true; |
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| 37 | } |
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| 38 | |
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| 39 | static_assert(test_constexpr_context<int>(), "" ); |
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| 40 | static_assert(test_constexpr_context<void>(), "" ); |
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| 41 | |
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| 42 | |
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| 43 | int main(int, char**) { |
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| 44 | |
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| 45 | |
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| 46 | return 0; |
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| 47 | } |
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| 48 | |
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