diff -r cd16d587b0fa -r edb5ab0f3fe5 src/share/vm/ci/ciInstance.cpp
--- a/src/share/vm/ci/ciInstance.cpp	Mon Sep 09 19:53:28 2013 +0200
+++ b/src/share/vm/ci/ciInstance.cpp	Tue Sep 10 14:51:48 2013 -0700
@@ -127,6 +127,8 @@
 ciConstant ciInstance::field_value_by_offset(int field_offset) {
   ciInstanceKlass* ik = klass()->as_instance_klass();
   ciField* field = ik->get_field_by_offset(field_offset, false);
+  if (field == NULL)
+    return ciConstant();  // T_ILLEGAL
   return field_value(field);
 }