--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/compiler/6894807/IsInstanceTest.java	Tue Aug 17 22:52:50 2010 -0700
@@ -0,0 +1,44 @@
+/*
+ * @test
+ * @bug 6894807
+ * @summary No ClassCastException for HashAttributeSet constructors if run with -Xcomp
+ * @compile IsInstanceTest.java
+ * @run shell Test6894807.sh
+*/
+
+public class IsInstanceTest {
+
+    public static void main(String[] args) {
+        BaseInterface baseInterfaceImpl = new BaseInterfaceImpl();
+        for (int i = 0; i < 100000; i++) {
+            if (isInstanceOf(baseInterfaceImpl, ExtendedInterface.class)) {
+                System.out.println("Failed at index:" + i);
+                System.out.println("Arch: "+System.getProperty("os.arch", "")+
+                                   " OS: "+System.getProperty("os.name", "")+
+                                   " OSV: "+System.getProperty("os.version", "")+
+                                   " Cores: "+Runtime.getRuntime().availableProcessors()+
+                                   " JVM: "+System.getProperty("java.version", "")+" "+System.getProperty("sun.arch.data.model", ""));
+                break;
+            }
+        }
+        System.out.println("Done!");
+    }
+
+    public static boolean isInstanceOf(BaseInterface baseInterfaceImpl, Class... baseInterfaceClasses) {
+        for (Class baseInterfaceClass : baseInterfaceClasses) {
+            if (baseInterfaceClass.isInstance(baseInterfaceImpl)) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    private interface BaseInterface {
+    }
+
+    private interface ExtendedInterface extends BaseInterface {
+    }
+
+    private static class BaseInterfaceImpl implements BaseInterface {
+    }
+}