*** old/src/share/vm/gc_implementation/g1/g1BlockOffsetTable.cpp	Wed Jan 15 01:40:48 2014
--- new/src/share/vm/gc_implementation/g1/g1BlockOffsetTable.cpp	Wed Jan 15 01:40:48 2014

*** 446,456 ****
--- 446,456 ----
      return ub;
    }
  
    // Otherwise, find the block start using the table, but taking
    // care (cf block_start_unsafe() above) not to parse any objects/blocks
!   // on the cards themsleves.
!   // on the cards themselves.
    size_t index = _array->index_for(addr);
    assert(_array->address_for_index(index) == addr,
           "arg should be start of card");
  
    HeapWord* q = (HeapWord*)addr;