--- a/test/lib/sun/hotspot/WhiteBox.java	Mon Sep 30 18:02:24 2019 +0200
+++ b/test/lib/sun/hotspot/WhiteBox.java	Mon Sep 30 13:10:11 2019 -0400
@@ -511,6 +511,7 @@
 
   // Safepoint Checking
   public native void assertMatchingSafepointCalls(boolean mutexSafepointValue, boolean attemptedNoSafepointValue);
+  public native void assertSpecialLock(boolean allowVMBlock, boolean safepointCheck);
 
   // Sharing & archiving
   public native String  getDefaultArchivePath();