*** old/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/replacements/ThreadSubstitutions.java	Mon Mar 20 17:39:01 2017
--- new/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/replacements/ThreadSubstitutions.java	Mon Mar 20 17:39:01 2017

*** 43,53 ****
--- 43,56 ----
   * Substitutions for {@link java.lang.Thread} methods.
   */
  @ClassSubstitution(Thread.class)
  public class ThreadSubstitutions {
  
      @MethodSubstitution(isStatic = false)
+     /**
+      * hidden in 9.
+      */
+     @MethodSubstitution(isStatic = false, optional = true)
      public static boolean isInterrupted(final Thread thisObject, boolean clearInterrupted) {
          Word javaThread = CurrentJavaThreadNode.get();
          Object thread = javaThread.readObject(threadObjectOffset(INJECTED_VMCONFIG), JAVA_THREAD_THREAD_OBJECT_LOCATION);
          if (thisObject == thread) {
              Word osThread = javaThread.readWord(osThreadOffset(INJECTED_VMCONFIG), JAVA_THREAD_OSTHREAD_LOCATION);