| 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 | // <atomic> |
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| 10 | |
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| 11 | // template <class T> |
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| 12 | // struct atomic; |
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| 13 | |
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| 14 | // This test checks that we static_assert inside std::atomic<T> when T |
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| 15 | // is not trivially copyable, however Clang will sometimes emit additional |
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| 16 | // errors while trying to instantiate the rest of std::atomic<T>. |
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| 17 | // We silence those to make the test more robust. |
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| 18 | // ADDITIONAL_COMPILE_FLAGS: -Xclang -verify-ignore-unexpected=error |
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| 19 | |
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| 20 | #include <atomic> |
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| 21 | |
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| 22 | struct NotTriviallyCopyable { |
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| 23 | explicit NotTriviallyCopyable(int i) : i_(i) { } |
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| 24 | NotTriviallyCopyable(const NotTriviallyCopyable &rhs) : i_(rhs.i_) { } |
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| 25 | int i_; |
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| 26 | }; |
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| 27 | |
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| 28 | void f() { |
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| 29 | NotTriviallyCopyable x(42); |
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| 30 | std::atomic<NotTriviallyCopyable> a(x); // expected-error@*:* {{std::atomic<T> requires that 'T' be a trivially copyable type}} |
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| 31 | } |
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| 32 | |
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