src/hotspot/share/runtime/os.cpp

rev 50307 : [mq]: cont

*** 1066,1076 ****
      b->print_on(st);
      return;
    }
  
    if (Universe::heap()->is_in(addr)) {
!     HeapWord* p = Universe::heap()->block_start(addr);
      bool print = false;
      // If we couldn't find it it just may mean that heap wasn't parsable
      // See if we were just given an oop directly
      if (p != NULL && Universe::heap()->block_is_obj(p)) {
        print = true;
--- 1066,1076 ----
      b->print_on(st);
      return;
    }
  
    if (Universe::heap()->is_in(addr)) {
!     HeapWord* p = NULL; // Universe::heap()->block_start(addr);
      bool print = false;
      // If we couldn't find it it just may mean that heap wasn't parsable
      // See if we were just given an oop directly
      if (p != NULL && Universe::heap()->block_is_obj(p)) {
        print = true;
*** 1082,1092 ****
--- 1082,1098 ----
        if (p == (HeapWord*) addr) {
          st->print_cr(INTPTR_FORMAT " is an oop", p2i(addr));
        } else {
          st->print_cr(INTPTR_FORMAT " is pointing into object: " INTPTR_FORMAT, p2i(addr), p2i(p));
        } 
+       if (*((juint*)p) == badHeapWordVal) {
+         st->print_cr(" Bad word");
+       } else if (*((juint*)p) == badMetaWordVal) {
+         st->print_cr(" Bad meta word");
+       } else {
          oop(p)->print_on(st);
+       }
        return;
      }
    } else {
      if (Universe::heap()->is_in_reserved(addr)) {
        st->print_cr(INTPTR_FORMAT " is an unallocated location "