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0cc8a63d0c
Fix #78426 C++26 introduced braced initializer lists as template arguments. However, such contexts should be considered invalid for co_await and co_yield. This commit explicitly rules out the possibility of using these exprs in template arguments. --------- Co-authored-by: cor3ntin <corentinjabot@gmail.com>
43 lines
1.3 KiB
C++
43 lines
1.3 KiB
C++
// RUN: %clang_cc1 %s -std=c++20 -fsyntax-only -verify
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#include "Inputs/std-coroutine.h"
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struct MyTask{
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struct promise_type {
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MyTask get_return_object();
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std::suspend_always initial_suspend() { return {}; }
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void unhandled_exception();
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void return_void();
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auto final_suspend() noexcept {
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struct Awaiter {
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bool await_ready() noexcept { return false; }
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std::coroutine_handle<promise_type> await_suspend(std::coroutine_handle<promise_type> h) noexcept;
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void await_resume() noexcept;
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};
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return Awaiter{};
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}
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// The coroutine to resume when we're done.
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std::coroutine_handle<promise_type> resume_when_done;
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};
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};
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MyTask DoSomething() {
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static_assert(__is_same(void, decltype(co_await 0))); // expected-error {{'co_await' cannot be used in an unevaluated context}}
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co_return;
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}
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MyTask DoAnotherthing() {
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static_assert(__is_same(void, decltype(co_yield 0))); // expected-error {{'co_yield' cannot be used in an unevaluated context}}
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co_return;
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}
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template<class>
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struct Task {};
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void BracedInitListCXX26() {
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[]() -> Task<{ co_await 1 }> {}; // expected-error {{'co_await' cannot be used in an unevaluated context}}
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[]() -> Task<{ co_yield 1 }> {}; // expected-error {{'co_yield' cannot be used in an unevaluated context}}
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}
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