--- old/src/hotspot/os/windows/os_windows.cpp	Tue Nov 14 05:34:34 2017
+++ new/src/hotspot/os/windows/os_windows.cpp	Tue Nov 14 05:34:32 2017
@@ -448,6 +448,12 @@
   return (unsigned)os::win32::exit_process_or_thread(os::win32::EPT_THREAD, res);
 }
 
+// Unlike Linux we don't try to handle the initial process
+// thread in any special way - so just report 'false'
+bool os::is_primordial_thread(void) {
+    return false;
+}
+
 static OSThread* create_os_thread(Thread* thread, HANDLE thread_handle,
                                   int thread_id) {
   // Allocate the OSThread object