446     return ub;

   446     return ub;

   447   }

   447   }

   448 

   448 

   449   // Otherwise, find the block start using the table, but taking

   449   // Otherwise, find the block start using the table, but taking

   450   // care (cf block_start_unsafe() above) not to parse any objects/blocks

   450   // care (cf block_start_unsafe() above) not to parse any objects/blocks

   452   size_t index = _array->index_for(addr);

   452   size_t index = _array->index_for(addr);

   453   assert(_array->address_for_index(index) == addr,

   453   assert(_array->address_for_index(index) == addr,

   454          "arg should be start of card");

   454          "arg should be start of card");

   455 

   455 

   456   HeapWord* q = (HeapWord*)addr;

   456   HeapWord* q = (HeapWord*)addr;