--- a/hotspot/src/share/vm/oops/constantPool.cpp	Thu Nov 01 13:05:47 2012 +0100
+++ b/hotspot/src/share/vm/oops/constantPool.cpp	Thu Oct 11 12:25:42 2012 -0400
@@ -1143,16 +1143,21 @@
   int from_oplen = operand_array_length(from_cp->operands());
   int old_oplen  = operand_array_length(to_cp->operands());
   if (from_oplen != 0) {
+    ClassLoaderData* loader_data = to_cp->pool_holder()->class_loader_data();
     // append my operands to the target's operands array
     if (old_oplen == 0) {
-      to_cp->set_operands(from_cp->operands());  // reuse; do not merge
+      // Can't just reuse from_cp's operand list because of deallocation issues
+      int len = from_cp->operands()->length();
+      Array<u2>* new_ops = MetadataFactory::new_array<u2>(loader_data, len, CHECK);
+      Copy::conjoint_memory_atomic(
+          from_cp->operands()->adr_at(0), new_ops->adr_at(0), len * sizeof(u2));
+      to_cp->set_operands(new_ops);
     } else {
       int old_len  = to_cp->operands()->length();
       int from_len = from_cp->operands()->length();
       int old_off  = old_oplen * sizeof(u2);
       int from_off = from_oplen * sizeof(u2);
       // Use the metaspace for the destination constant pool
-      ClassLoaderData* loader_data = to_cp->pool_holder()->class_loader_data();
       Array<u2>* new_operands = MetadataFactory::new_array<u2>(loader_data, old_len + from_len, CHECK);
       int fillp = 0, len = 0;
       // first part of dest