--- old/src/hotspot/share/classfile/defaultMethods.cpp	2018-10-08 03:01:23.938247709 -0400
+++ new/src/hotspot/share/classfile/defaultMethods.cpp	2018-10-08 03:01:22.370157098 -0400
@@ -474,7 +474,8 @@
 };
 
 Symbol* MethodFamily::generate_no_defaults_message(TRAPS) const {
-  return SymbolTable::new_symbol("No qualifying defaults found", THREAD);
+  Symbol* s = SymbolTable::new_symbol("No qualifying defaults found", CHECK_NULL);
+  return s;
 }
 
 Symbol* MethodFamily::generate_method_message(Symbol *klass_name, Method* method, TRAPS) const {
@@ -487,7 +488,8 @@
   ss.write((const char*)name->bytes(), name->utf8_length());
   ss.write((const char*)signature->bytes(), signature->utf8_length());
   ss.print(" is abstract");
-  return SymbolTable::new_symbol(ss.base(), (int)ss.size(), THREAD);
+  Symbol* s = SymbolTable::new_symbol(ss.base(), (int)ss.size(), CHECK_NULL);
+  return s;
 }
 
 Symbol* MethodFamily::generate_conflicts_message(GrowableArray<Method*>* methods, TRAPS) const {
@@ -502,7 +504,8 @@
     ss.print(".");
     ss.write((const char*)name->bytes(), name->utf8_length());
   }
-  return SymbolTable::new_symbol(ss.base(), (int)ss.size(), THREAD);
+  Symbol* s = SymbolTable::new_symbol(ss.base(), (int)ss.size(), CHECK_NULL);
+  return s;
 }