diff -r cdffba164671 -r 3e5d28e6de32 src/hotspot/share/prims/jvmtiRedefineClasses.cpp
--- a/src/hotspot/share/prims/jvmtiRedefineClasses.cpp	Mon Aug 20 10:04:00 2018 +0200
+++ b/src/hotspot/share/prims/jvmtiRedefineClasses.cpp	Mon Aug 20 08:25:57 2018 -0400
@@ -136,7 +136,7 @@
     }
 
     oop mirror = JNIHandles::resolve_non_null(_class_defs[i].klass);
-    // classes for primitives and arrays and vm anonymous classes cannot be redefined
+    // classes for primitives and arrays and vm unsafe anonymous classes cannot be redefined
     // check here so following code can assume these classes are InstanceKlass
     if (!is_modifiable_class(mirror)) {
       _res = JVMTI_ERROR_UNMODIFIABLE_CLASS;
@@ -278,8 +278,8 @@
     return false;
   }
 
-  // Cannot redefine or retransform an anonymous class.
-  if (InstanceKlass::cast(k)->is_anonymous()) {
+  // Cannot redefine or retransform an unsafe anonymous class.
+  if (InstanceKlass::cast(k)->is_unsafe_anonymous()) {
     return false;
   }
   return true;
@@ -2650,7 +2650,7 @@
 
     case 0x10:
     // kind: type in extends clause of class or interface declaration
-    //       (including the direct superclass of an anonymous class declaration),
+    //       (including the direct superclass of an unsafe anonymous class declaration),
     //       or in implements clause of interface declaration
     // location: ClassFile