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ec117158a3
Now in libcxx and clang, all the coroutine components are defined in std::experimental namespace. And now the coroutine TS is merged into C++20. So in the working draft like N4892, we could find the coroutine components is defined in std namespace instead of std::experimental namespace. And the coroutine support in clang seems to be relatively stable. So I think it may be suitable to move the coroutine component into the experiment namespace now. This patch would make clang lookup coroutine_traits in std namespace first. For the compatibility consideration, clang would lookup in std::experimental namespace if it can't find definitions in std namespace. So the existing codes wouldn't be break after update compiler. And in case the compiler found std::coroutine_traits and std::experimental::coroutine_traits at the same time, it would emit an error for it. The support for looking up std::experimental::coroutine_traits would be removed in Clang16. Reviewed By: lxfind, Quuxplusone Differential Revision: https://reviews.llvm.org/D108696
44 lines
862 B
C++
44 lines
862 B
C++
// RUN: %clang_cc1 -triple x86_64-apple-darwin9 %s -std=c++20 -fsyntax-only -Wall -Wextra -Wuninitialized -fblocks
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#include "Inputs/std-coroutine.h"
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using namespace std;
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struct A {
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bool await_ready() { return true; }
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int await_resume() { return 42; }
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template <typename F>
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void await_suspend(F) {}
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};
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struct coro_t {
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struct promise_type {
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coro_t get_return_object() { return {}; }
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suspend_never initial_suspend() { return {}; }
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suspend_never final_suspend() noexcept { return {}; }
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A yield_value(int) { return {}; }
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void return_void() {}
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static void unhandled_exception() {}
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};
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};
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coro_t f(int n) {
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if (n == 0)
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co_return;
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co_yield 42;
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int x = co_await A{};
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}
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template <class Await>
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coro_t g(int n) {
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if (n == 0)
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co_return;
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co_yield 42;
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int x = co_await Await{};
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}
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int main() {
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f(0);
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g<A>(0);
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}
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