diff -r c80f6ecb0bb3 -r 5f9eee6b383b hotspot/src/share/vm/classfile/javaClasses.inline.hpp
--- a/hotspot/src/share/vm/classfile/javaClasses.inline.hpp	Tue Mar 15 13:48:21 2016 -0700
+++ b/hotspot/src/share/vm/classfile/javaClasses.inline.hpp	Thu Mar 17 19:04:01 2016 +0000
@@ -171,6 +171,10 @@
 
 
 
+inline bool java_lang_reflect_Module::is_instance(oop obj) {
+  return obj != NULL && is_subclass(obj->klass());
+}
+
 inline int Backtrace::merge_bci_and_version(int bci, int version) {
   // only store u2 for version, checking for overflow.
   if (version > USHRT_MAX || version < 0) version = USHRT_MAX;