--- old/src/hotspot/share/classfile/classFileParser.cpp	2018-06-21 20:19:29.299097670 -0700
+++ new/src/hotspot/share/classfile/classFileParser.cpp	2018-06-21 20:19:28.566731646 -0700
@@ -117,6 +117,8 @@
 
 #define JAVA_11_VERSION                   55
 
+#define JAVA_12_VERSION                   56
+
 void ClassFileParser::set_class_bad_constant_seen(short bad_constant) {
   assert((bad_constant == 19 || bad_constant == 20) && _major_version >= JAVA_9_VERSION,
          "Unexpected bad constant pool entry");