--- old/src/hotspot/share/classfile/classLoaderData.inline.hpp	2018-03-02 08:11:51.157059152 -0500
+++ new/src/hotspot/share/classfile/classLoaderData.inline.hpp	2018-03-02 08:11:50.488548324 -0500
@@ -22,6 +22,9 @@
  *
  */
 
+#ifndef SHARE_VM_CLASSFILE_CLASSLOADERDATA_INLINE_HPP
+#define SHARE_VM_CLASSFILE_CLASSLOADERDATA_INLINE_HPP
+
 #include "classfile/classLoaderData.hpp"
 #include "classfile/javaClasses.hpp"
 #include "oops/oop.inline.hpp"
@@ -76,3 +79,5 @@
   assert(count <= _num_array_classes, "Sanity");
   Atomic::sub(count, &_num_array_classes);
 }
+
+#endif // SHARE_VM_CLASSFILE_CLASSLOADERDATA_INLINE_HPP