--- old/src/hotspot/share/classfile/classFileParser.cpp	2018-07-26 12:49:50.884500538 -0400
+++ new/src/hotspot/share/classfile/classFileParser.cpp	2018-07-26 12:49:50.259153424 -0400
@@ -3570,6 +3570,9 @@
                          "Nest-host class_info_index %u has bad constant type in class file %s",
                          class_info_index, CHECK);
           _nest_host = class_info_index;
+        } else {
+          // Unknown attribute
+          cfs->skip_u1(attribute_length, CHECK);
         }
       } else {
         // Unknown attribute