| 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 |
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| 10 | |
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| 11 | // Test that the header `poisoned_hash_helper.h` doesn't include any |
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| 12 | // headers that provide hash<T> specializations. This is required so that the |
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| 13 | // 'test_library_hash_specializations_available()' function returns false |
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| 14 | // by default, unless a STL header providing hash has already been included. |
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| 15 | |
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| 16 | #include "poisoned_hash_helper.h" |
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| 17 | |
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| 18 | #include "test_macros.h" |
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| 19 | |
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| 20 | template <class T, std::size_t = sizeof(T)> |
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| 21 | constexpr bool is_complete_imp(int) { return true; } |
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| 22 | template <class> constexpr bool is_complete_imp(long) { return false; } |
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| 23 | template <class T> constexpr bool is_complete() { return is_complete_imp<T>(0); } |
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| 24 | |
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| 25 | template <class T> struct has_complete_hash { |
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| 26 | enum { value = is_complete<std::hash<T> >() }; |
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| 27 | }; |
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| 28 | |
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| 29 | int main(int, char**) { |
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| 30 | static_assert(LibraryHashTypes::assertTrait<has_complete_hash, false>(), "" ); |
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| 31 | |
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| 32 | return 0; |
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| 33 | } |
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| 34 | |
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