diff -r ae0af9fb3dbb -r cba8afa5cfed src/hotspot/share/oops/instanceKlass.cpp
--- a/src/hotspot/share/oops/instanceKlass.cpp	Mon Oct 21 09:26:14 2019 -0700
+++ b/src/hotspot/share/oops/instanceKlass.cpp	Mon Oct 21 13:13:16 2019 -0400
@@ -2594,7 +2594,7 @@
 
   // Add L as type indicator
   int dest_index = 0;
-  dest[dest_index++] = 'L';
+  dest[dest_index++] = JVM_SIGNATURE_CLASS;
 
   // Add the actual class name
   for (int src_index = 0; src_index < src_length; ) {
@@ -2607,7 +2607,7 @@
   }
 
   // Add the semicolon and the NULL
-  dest[dest_index++] = ';';
+  dest[dest_index++] = JVM_SIGNATURE_ENDCLASS;
   dest[dest_index] = '\0';
   return dest;
 }