testmgr_is_poison
if (!testmgr_is_poison(&result[digestsize], TESTMGR_POISON_LEN)) {
if (!testmgr_is_poison(hashstate + statesize,
if (!testmgr_is_poison(result, digestsize)) {
if (!testmgr_is_poison(hashstate + statesize,
!testmgr_is_poison(actual_output + len, TESTMGR_POISON_LEN))