diff -r ae0af9fb3dbb -r cba8afa5cfed src/hotspot/share/prims/jvmtiImpl.cpp
--- a/src/hotspot/share/prims/jvmtiImpl.cpp	Mon Oct 21 09:26:14 2019 -0700
+++ b/src/hotspot/share/prims/jvmtiImpl.cpp	Mon Oct 21 13:13:16 2019 -0400
@@ -588,7 +588,8 @@
   assert(klass != NULL, "klass must not be NULL");
 
   int len = (int) strlen(ty_sign);
-  if (ty_sign[0] == 'L' && ty_sign[len-1] == ';') { // Need pure class/interface name
+  if (ty_sign[0] == JVM_SIGNATURE_CLASS &&
+      ty_sign[len-1] == JVM_SIGNATURE_ENDCLASS) { // Need pure class/interface name
     ty_sign++;
     len -= 2;
   }