WARNING: ThreadSanitizer: data race (pid=1111048)
Write of size 1 at 0x7f89a35fd637 by thread T8:
#0 dart::MyCallbackBlocking(long)::$_0::operator()() const out/ReleaseTSANX64/../../runtime/bin/ffi_test/ffi_test_functions_vmspecific.cc:486:14 (libffi_test_functions.so+0x146d61)
#1 decltype(std::declval<dart::MyCallbackBlocking(long)::$_0&>()()) std::_LIBCPP_ABI_NAMESPACE::__invoke[abi:v15000]<dart::MyCallbackBlocking(long)::$_0&>(dart::MyCallbackBlocking(long)::$_0&) out/ReleaseTSANX64/../../third_party/libcxx/include/__functional/invoke.h:403:23 (libffi_test_functions.so+0x146d61)
#2 void std::_LIBCPP_ABI_NAMESPACE::__invoke_void_return_wrapper<void, true>::__call<dart::MyCallbackBlocking(long)::$_0&>(dart::MyCallbackBlocking(long)::$_0&) out/ReleaseTSANX64/../../third_party/libcxx/include/__functional/invoke.h:488:9 (libffi_test_functions.so+0x146d61)
#3 std::_LIBCPP_ABI_NAMESPACE::__function::__alloc_func<dart::MyCallbackBlocking(long)::$_0, std::_LIBCPP_ABI_NAMESPACE::allocator<dart::MyCallbackBlocking(long)::$_0>, void ()>::operator()[abi:v15000]() out/ReleaseTSANX64/../../third_party/libcxx/include/__functional/function.h:185:16 (libffi_test_functions.so+0x146d61)
#4 std::_LIBCPP_ABI_NAMESPACE::__function::__func<dart::MyCallbackBlocking(long)::$_0, std::_LIBCPP_ABI_NAMESPACE::allocator<dart::MyCallbackBlocking(long)::$_0>, void ()>::operator()() out/ReleaseTSANX64/../../third_party/libcxx/include/__functional/function.h:359:12 (libffi_test_functions.so+0x146d61)
#5 std::_LIBCPP_ABI_NAMESPACE::__function::__value_func<void ()>::operator()[abi:v15000]() const out/ReleaseTSANX64/../../third_party/libcxx/include/__functional/function.h:512:16 (libffi_test_functions.so+0x143662)
#6 std::_LIBCPP_ABI_NAMESPACE::function<void ()>::operator()() const out/ReleaseTSANX64/../../third_party/libcxx/include/__functional/function.h:1187:12 (libffi_test_functions.so+0x143662)
#7 ExecuteCallback out/ReleaseTSANX64/../../runtime/bin/ffi_test/ffi_test_functions_vmspecific.cc:608:3 (libffi_test_functions.so+0x143662)
#8 <null> <null> (0x7f89b978868a)
#9 dart::DartEntry::InvokeFunction(dart::Function const&, dart::Array const&) out/ReleaseTSANX64/../../runtime/vm/dart_entry.cc:37:10 (dart+0x251a831)
#10 dart::DartLibraryCalls::HandleMessage(long, dart::Instance const&) out/ReleaseTSANX64/../../runtime/vm/dart_entry.cc:717:28 (dart+0x251a831)
#11 dart::IsolateMessageHandler::HandleMessage(std::_LIBCPP_ABI_NAMESPACE::unique_ptr<dart::Message, std::_LIBCPP_ABI_NAMESPACE::default_delete<dart::Message>>) out/ReleaseTSANX64/../../runtime/vm/isolate.cc:1425:15 (dart+0x2551c30)
#12 dart::MessageHandler::HandleMessages(dart::MonitorLocker*, bool, bool) out/ReleaseTSANX64/../../runtime/vm/message_handler.cc:238:16 (dart+0x25925cf)
#13 dart::MessageHandler::TaskCallback() out/ReleaseTSANX64/../../runtime/vm/message_handler.cc:457:18 (dart+0x2592c6c)
#14 dart::MessageHandlerTask::Run() out/ReleaseTSANX64/../../runtime/vm/message_handler.cc:31:15 (dart+0x2593423)
#15 dart::ThreadPool::WorkerLoop(dart::ThreadPool::Worker*) out/ReleaseTSANX64/../../runtime/vm/thread_pool.cc:158:15 (dart+0x27856be)
#16 dart::ThreadPool::Worker::Main(unsigned long) out/ReleaseTSANX64/../../runtime/vm/thread_pool.cc:330:9 (dart+0x2785bc7)
#17 dart::ThreadStart(void*) out/ReleaseTSANX64/../../runtime/vm/os_thread_linux.cc:154:5 (dart+0x26a7423)
Previous read of size 1 at 0x7f89a35fd637 by thread T10 (mutexes: write M0):
#0 dart::MyCallbackBlocking(long) out/ReleaseTSANX64/../../runtime/bin/ffi_test/ffi_test_functions_vmspecific.cc:492:11 (libffi_test_functions.so+0x142fb5)
#1 dart::Work2() out/ReleaseTSANX64/../../runtime/bin/ffi_test/ffi_test_functions_vmspecific.cc:537:25 (libffi_test_functions.so+0x1433d4)
#2 decltype(std::declval<void (*)()>()()) std::_LIBCPP_ABI_NAMESPACE::__invoke[abi:v15000]<void (*)()>(void (*&&)()) out/ReleaseTSANX64/../../third_party/libcxx/include/__functional/invoke.h:403:23 (libffi_test_functions.so+0x1462cb)
#3 void std::_LIBCPP_ABI_NAMESPACE::__thread_execute[abi:v15000]<std::_LIBCPP_ABI_NAMESPACE::unique_ptr<std::_LIBCPP_ABI_NAMESPACE::__thread_struct, std::_LIBCPP_ABI_NAMESPACE::default_delete<std::_LIBCPP_ABI_NAMESPACE::__thread_struct>>, void (*)()>(std::_LIBCPP_ABI_NAMESPACE::tuple<std::_LIBCPP_ABI_NAMESPACE::unique_ptr<std::_LIBCPP_ABI_NAMESPACE::__thread_struct, std::_LIBCPP_ABI_NAMESPACE::default_delete<std::_LIBCPP_ABI_NAMESPACE::__thread_struct>>, void (*)()>&, std::_LIBCPP_ABI_NAMESPACE::__tuple_indices<...>) out/ReleaseTSANX64/../../third_party/libcxx/include/thread:284:5 (libffi_test_functions.so+0x1462cb)
#4 void* std::_LIBCPP_ABI_NAMESPACE::__thread_proxy[abi:v15000]<std::_LIBCPP_ABI_NAMESPACE::tuple<std::_LIBCPP_ABI_NAMESPACE::unique_ptr<std::_LIBCPP_ABI_NAMESPACE::__thread_struct, std::_LIBCPP_ABI_NAMESPACE::default_delete<std::_LIBCPP_ABI_NAMESPACE::__thread_struct>>, void (*)()>>(void*) out/ReleaseTSANX64/../../third_party/libcxx/include/thread:295:5 (libffi_test_functions.so+0x1462cb)
python3 tools/test.py -n vm-tsan-linux-release-x64 samples/ffi/async/async_test
