src/hotspot/share/oops/oop.cpp

rev 50307 : [mq]: cont

@@ -36,10 +36,14 @@
 bool always_do_update_barrier = false;
 
 void oopDesc::print_on(outputStream* st) const {
   if (this == NULL) {
     st->print_cr("NULL");
+  } else if (*((juint*)this) == badHeapWordVal) {
+    st->print("BAD WORD");
+  } else if (*((juint*)this) == badMetaWordVal) {
+    st->print("BAD META WORD");
   } else {
     klass()->oop_print_on(oop(this), st);
   }
 }