--- old/src/share/vm/opto/arraycopynode.cpp	2015-03-02 11:03:10.023121477 +0100
+++ new/src/share/vm/opto/arraycopynode.cpp	2015-03-02 11:03:09.863250274 +0100
@@ -145,7 +145,6 @@
   Node* in_mem = in(TypeFunc::Memory);
 
   const Type* src_type = phase->type(src);
-  const Type* dest_type = phase->type(dest);
 
   assert(src->is_AddP(), "should be base + off");
   assert(dest->is_AddP(), "should be base + off");
@@ -483,7 +482,9 @@
     return NULL;
   }
 
-  if (in(TypeFunc::Control)->is_top() || in(TypeFunc::Memory)->is_top()) {
+  if (in(TypeFunc::Control)->is_top() || in(TypeFunc::Memory)->is_top() ||
+      phase->type(in(ArrayCopyNode::Src)) == Type::TOP ||
+      phase->type(in(ArrayCopyNode::Dest)) == Type::TOP) {
     return NULL;
   }