There are a number of HotSpot tests that use the <atomic> standard library header, contrary to HotSpot guidelines and practice. These should be updated to not do so.

./serviceability/jvmti/SuspendWithCurrentThread/libSuspendWithCurrentThread.cpp:#include <atomic>
./serviceability/jvmti/vthread/FollowReferences/libVThreadStackRefTest.cpp:#include <atomic>
./serviceability/jvmti/vthread/GetThreadStateMountedTest/libGetThreadStateMountedTest.cpp:#include <atomic>
./serviceability/jvmti/vthread/InterruptThreadTest/libInterruptThreadTest.cpp:#include <atomic>
./serviceability/jvmti/vthread/RawMonitorTest/libRawMonitorTest.cpp:#include <atomic>
./serviceability/jvmti/vthread/VThreadEventTest/libVThreadEventTest.cpp:#include <atomic>
./serviceability/jvmti/vthread/VThreadUnsupportedTest/libVThreadUnsupportedTest.cpp:#include <atomic>
./vmTestbase/nsk/jdwp/ThreadReference/ForceEarlyReturn/forceEarlyReturn002/libforceEarlyReturn002a.cpp:#include <atomic>
./vmTestbase/nsk/share/jvmti/hotswap/HotSwap.cpp:#include <atomic>