238               err_msg("invariant: i: %u hrs_index(): %u", i, hr->hrs_index()));

   238               err_msg("invariant: i: %u hrs_index(): %u", i, hr->hrs_index()));

   239     if (i < length()) {

   239     if (i < length()) {

   240       // Asserts will fire if i is >= _length

   240       // Asserts will fire if i is >= _length

   241       HeapWord* addr = hr->bottom();

   241       HeapWord* addr = hr->bottom();

   242       guarantee(addr_to_region(addr) == hr, "sanity");

   242       guarantee(addr_to_region(addr) == hr, "sanity");

   244     } else {

   243     } else {

   245       guarantee(hr->is_empty(), "sanity");

   244       guarantee(hr->is_empty(), "sanity");

   246       guarantee(!hr->isHumongous(), "sanity");

   245       guarantee(!hr->isHumongous(), "sanity");

   247       // using assert instead of guarantee here since containing_set()

   246       // using assert instead of guarantee here since containing_set()

   248       // is only available in non-product builds.

   247       // is only available in non-product builds.