[libc++][testing] Suppress new warnings about <experimental/coroutine>

[mumbleskates]

Summary

CI is currently failing with new builds of clang due to a warning that std::experimental::coroutine_traits is deprecated, but libc++ does not have <coroutine> yet.

[cjdb]

Seems obviously correct to me, but we should take this as a prod to get <coroutine> done.

[• Quuxplusone]

This looks related to D108696, which is already reverted out of main (thanks @ldionne).
Anyway, surely if we want to give a warning about <experimental/coroutine>, we should do it by putting a #warning directive in libc++'s <experimental/coroutine> itself; there is no reason for the compiler to be warning here, is there?

[mumbleskates]

In D109285#2983988, @Quuxplusone wrote:

This looks related to D108696, which is already reverted out of main (thanks @ldionne).

Is there something we can do to bump the compiler version on the CI then? It's a lot of work to confirm that these are the only failures. It looks like they're failing on Runtimes, MacOS x86_64, and the Apple back-deployment workers.

[Mordante]

In D109285#2984003, @mumbleskates wrote:

In D109285#2983988, @Quuxplusone wrote:

This looks related to D108696, which is already reverted out of main (thanks @ldionne).

Is there something we can do to bump the compiler version on the CI then? It's a lot of work to confirm that these are the only failures. It looks like they're failing on Runtimes, MacOS x86_64, and the Apple back-deployment workers.

I don't see this issue on the CI currently. So it seems Louis' revert fixed the issue.
@mumbleskates If your reviews still have this issue, try rebasing them to the latest main.

[mumbleskates]

Okay looks like this is probably resolved-ish by now.

libcxx/test/libcxx/experimental/language.support/support.coroutines/dialect_support.pass.cpp

 // -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 
 // REQUIRES: fcoroutines-ts
 // ADDITIONAL_COMPILE_FLAGS: -fcoroutines-ts
+// ADDITIONAL_COMPILE_FLAGS: -Wno-coroutine
 
 // A simple "breathing" test that checks that <experimental/coroutine>
 // can be parsed and used in all dialects, including C++03 in order to match
 // Clang's behavior.
 
 #include <experimental/coroutine>
 
 #include "test_macros.h"

libcxx/test/std/experimental/language.support/support.coroutines/coroutine.handle/coroutine.handle.prom/promise.pass.cpp

 // -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 
 // UNSUPPORTED: c++03, c++11
+// ADDITIONAL_COMPILE_FLAGS: -Wno-coroutine
 
 // <experimental/coroutine>
 
 // template <class Promise>
 // struct coroutine_handle<Promise>;
 
 // Promise& promise() const
 

libcxx/test/std/experimental/language.support/support.coroutines/end.to.end/await_result.pass.cpp

 // -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 
 // UNSUPPORTED: c++03, c++11
+// ADDITIONAL_COMPILE_FLAGS: -Wno-coroutine
 
 #include <experimental/coroutine>
 #include <cassert>
 
 #include "test_macros.h"
 
 using namespace std::experimental;
 

libcxx/test/std/experimental/language.support/support.coroutines/end.to.end/bool_await_suspend.pass.cpp

 // -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 
 // UNSUPPORTED: c++03, c++11
+// ADDITIONAL_COMPILE_FLAGS: -Wno-coroutine
 
 // See https://llvm.org/PR33271
 // UNSUPPORTED: ubsan
 
 #include <experimental/coroutine>
 #include <cassert>
 
 #include "test_macros.h"

libcxx/test/std/experimental/language.support/support.coroutines/end.to.end/expected.pass.cpp

 // -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 
 // UNSUPPORTED: c++03, c++11
+// ADDITIONAL_COMPILE_FLAGS: -Wno-coroutine
 
 #include <experimental/coroutine>
 #include <cassert>
 #include <memory>
 
 #include "test_macros.h"
 using namespace std::experimental;
 

libcxx/test/std/experimental/language.support/support.coroutines/end.to.end/fullexpr-dtor.pass.cpp

 // -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 
 // UNSUPPORTED: c++03, c++11
+// ADDITIONAL_COMPILE_FLAGS: -Wno-coroutine
 
 #include <experimental/coroutine>
 #include <cassert>
 
 #include "test_macros.h"
 
 using namespace std::experimental;
 

libcxx/test/std/experimental/language.support/support.coroutines/end.to.end/generator.pass.cpp

 // -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 
 // UNSUPPORTED: c++03, c++11
+// ADDITIONAL_COMPILE_FLAGS: -Wno-coroutine
 
 // See https://llvm.org/PR33271
 // UNSUPPORTED: ubsan
 
 #include <experimental/coroutine>
 #include <vector>
 #include <cassert>
 

libcxx/test/std/experimental/language.support/support.coroutines/end.to.end/go.pass.cpp

 // -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 
 // UNSUPPORTED: c++03, c++11
+// ADDITIONAL_COMPILE_FLAGS: -Wno-coroutine
 
 #include <experimental/coroutine>
 #include <cassert>
 
 #include "test_macros.h"
 
 using namespace std::experimental;
 

libcxx/test/std/experimental/language.support/support.coroutines/end.to.end/multishot_func.pass.cpp

 // -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 
 // UNSUPPORTED: c++03, c++11
+// ADDITIONAL_COMPILE_FLAGS: -Wno-coroutine
 
 #include <experimental/coroutine>
 #include <cassert>
 
 #include "test_macros.h"
 
 using namespace std::experimental;
 

libcxx/test/std/experimental/language.support/support.coroutines/end.to.end/oneshot_func.pass.cpp

 // -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 
 // UNSUPPORTED: c++03, c++11
+// ADDITIONAL_COMPILE_FLAGS: -Wno-coroutine
 
 #include <experimental/coroutine>
 #include <vector>
 #include <cassert>
 
 #include "test_macros.h"
 
 using namespace std::experimental;