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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
42 lines
1.2 KiB
C++
42 lines
1.2 KiB
C++
// RUN: %clang_cc1 -triple x86_64-apple-darwin9 %s -std=c++20 \
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// RUN: -fsyntax-only -Wignored-qualifiers -Wno-error=return-type -verify \
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// RUN: -fblocks -Wno-unreachable-code -Wno-unused-value
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// RUN: %clang_cc1 -triple x86_64-apple-darwin9 %s -std=c++20 \
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// RUN: -fsyntax-only -Wignored-qualifiers -Wno-error=return-type -verify \
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// RUN: -fblocks -Wno-unreachable-code -Wno-unused-value \
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// RUN: -DDISABLE_WARNING -Wno-coroutine-missing-unhandled-exception
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#if __has_feature(cxx_exceptions)
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#error This test requires exceptions be disabled
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#endif
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#include "Inputs/std-coroutine.h"
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using std::suspend_always;
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using std::suspend_never;
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#ifndef DISABLE_WARNING
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struct promise_void { // expected-note {{defined here}}
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#else
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struct promise_void {
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#endif
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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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};
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template <typename... T>
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struct std::coroutine_traits<void, T...> { using promise_type = promise_void; };
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#ifndef DISABLE_WARNING
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void test0() { // expected-warning {{'promise_void' is required to declare the member 'unhandled_exception()' when exceptions are enabled}}
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co_return;
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}
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#else
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void test0() { // expected-no-diagnostics
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co_return;
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}
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#endif
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