--- old/make/hotspot/src/native/dtrace/generateJvmOffsets.cpp	2018-07-17 10:59:46.969239732 -0400
+++ new/make/hotspot/src/native/dtrace/generateJvmOffsets.cpp	2018-07-17 10:59:46.741239740 -0400
@@ -212,7 +212,7 @@
   GEN_VALUE(AccessFlags_NATIVE, JVM_ACC_NATIVE);
   GEN_VALUE(ConstMethod_has_linenumber_table, ConstMethod::_has_linenumber_table);
   GEN_OFFS(AccessFlags, _flags);
-  GEN_OFFS(Symbol, _length);
+  GEN_OFFS(Symbol, _length_and_refcount);
   GEN_OFFS(Symbol, _body);
   printf("\n");