b50fea47b6
This is that diff I was aiming for. When transitioning code from coroutines-ts to c++20, it can be useful to add a using declaration to std::experimental pointing to std::coroutine_traits. This permits that use by checking whether lookup in std::experimentl finds a different decl to lookup in std. You still get a warning about std::experimental::coroutine_traits being a thing, just not an error. Reviewed By: ChuanqiXu Differential Revision: https://reviews.llvm.org/D115943
31 lines
787 B
C++
31 lines
787 B
C++
// RUN: %clang_cc1 -verify -std=c++20 -fsyntax-only %s
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#include "Inputs/std-coroutine.h"
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namespace std::experimental {
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using std::coroutine_handle;
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using std::coroutine_traits; // expected-note{{declared here}}
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} // namespace std::experimental
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struct my_awaitable {
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bool await_ready() noexcept;
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void await_suspend(std::coroutine_handle<> coro) noexcept;
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void await_resume() noexcept;
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};
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struct promise_void {
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void get_return_object();
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my_awaitable initial_suspend();
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my_awaitable final_suspend() noexcept;
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void return_void();
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void unhandled_exception();
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};
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template <>
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struct std::coroutine_traits<void> { using promise_type = promise_void; };
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void test() {
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co_return;
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// expected-warning@-1{{support for std::experimental::coroutine_traits will be removed}}
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}
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