Symptom:

$ jcmd $PID GC.class_stats ClassName,ClassLoader| grep MyClass
  267 49 MyClass,class loader 0x00007fa7c04182f0a 'jdk/internal/loader/ClassLoaders$AppClassLoader'{0x00000003d249aa00}

The space character is missing between "0x00007fa7c04182f0" and "a"

Fix:

diff -r 13b2c7ac95a5 src/share/vm/classfile/classLoaderData.cpp
--- a/src/share/vm/classfile/classLoaderData.cpp Wed Jun 15 09:48:24 2016 -0400
+++ b/src/share/vm/classfile/classLoaderData.cpp Mon Jun 20 10:05:11 2016 -0700
@@ -1147,7 +1147,7 @@
   if (class_loader() == NULL) {
     out->print("NULL class_loader");
   } else {
- out->print("class loader " INTPTR_FORMAT, p2i(this));
+ out->print("class loader " INTPTR_FORMAT " ", p2i(this));
     class_loader()->print_value_on(out);
   }
 }