8ab82a2dc3
This is extracted from #94620. While libc++ doesn't have the problem described in that issue, a test case is a good idea to ensure that we don't regress this behavior in the future. This could happen for example if we decide to use `_Complex` in the implementation of `std::complex` while Clang doesn't handle bit_cast with _Complex yet.
37 lines
981 B
C++
37 lines
981 B
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// UNSUPPORTED: c++03, c++11, c++14, c++17
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// Make sure that std::bit_cast works with std::complex. Test case extracted from
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// https://github.com/llvm/llvm-project/issues/94620.
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#include <bit>
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#include <complex>
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template <class T>
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constexpr void test() {
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using Complex = std::complex<T>;
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unsigned char data[sizeof(Complex)] = {0};
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[[maybe_unused]] Complex c = std::bit_cast<Complex>(data);
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}
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constexpr bool test_all() {
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test<float>();
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test<double>();
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test<long double>();
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return true;
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}
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int main(int, char**) {
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test_all();
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static_assert(test_all());
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return 0;
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}
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