src/share/classes/java/lang/reflect/Executable.java

*** 324,342 ****
  
              // Otherwise, go to the JVM to get them
              tmp = getParameters0();
  
              // If we get back nothing, then synthesize parameters
!             if (tmp == null)
                  tmp = synthesizeAllParams();
  
              parameters = tmp;
          }
  
          return tmp;
      }
  
      private transient volatile Parameter[] parameters;
  
      private native Parameter[] getParameters0();
  
      /**
--- 324,356 ----
  
              // Otherwise, go to the JVM to get them
              tmp = getParameters0();
  
              // If we get back nothing, then synthesize parameters
!             if (tmp == null) {
!                 hasRealParameterData = false;
                  tmp = synthesizeAllParams();
+             } else {
+                 hasRealParameterData = true;
+             }
  
              parameters = tmp;
          }
  
          return tmp;
      }
  
+     boolean hasRealParameterData() {
+         // If this somehow gets called before parameters gets
+         // initialized, force it into existence.
+         if (parameters == null)
+             privateGetParameters();
+ 
+         return hasRealParameterData;
+     }
+ 
+     private boolean hasRealParameterData;
      private transient volatile Parameter[] parameters;
  
      private native Parameter[] getParameters0();
  
      /**