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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
25 lines
728 B
C++
25 lines
728 B
C++
// RUN: c-index-test -test-load-source all -c %s -fsyntax-only -target x86_64-apple-darwin9 -fcoroutines-ts -std=c++1z -I%S/../SemaCXX/Inputs | FileCheck %s
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#include "std-coroutine.h"
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using std::suspend_always;
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using std::suspend_never;
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struct promise_void {
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void get_return_object();
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suspend_always initial_suspend();
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suspend_always 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 CoroutineTestRet() {
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co_return;
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}
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// CHECK: [[@LINE-3]]:25: UnexposedStmt=
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// CHECK-SAME: [[@LINE-4]]:25 - [[@LINE-2]]:2]
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// CHECK: [[@LINE-4]]:3: UnexposedStmt=
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// CHECK-SAME: [[@LINE-5]]:3 - [[@LINE-5]]:12]
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