src/hotspot/os/windows/os_windows.cpp

@@ -5234,11 +5234,11 @@
   // that it will take two back-to-back park() calls for the owning
   // thread to block. This has the benefit of forcing a spurious return
   // from the first park() call after an unpark() call which will help
   // shake out uses of park() and unpark() without condition variables.
 
-  if (Atomic::xchg(1, &_Event) >= 0) return;
+  if (Atomic::xchg(&_Event, 1) >= 0) return;
 
   ::SetEvent(_ParkHandle);
 }