--- a/src/hotspot/share/libadt/set.cpp	Fri Jul 19 02:40:59 2019 +0000
+++ b/src/hotspot/share/libadt/set.cpp	Tue Jul 16 14:42:36 2019 +0200
@@ -43,7 +43,6 @@
 // The caller must deallocate the string.
 char *Set::setstr() const
 {
-  if( this == NULL ) return os::strdup("{no set}");
   Set &set = clone();           // Virtually copy the basic set.
   set.Sort();                   // Sort elements for in-order retrieval