160     block *prevblock;  in deque_pop()  local
179             prevblock = deque->rightblock->leftlink;  in deque_pop()
182             prevblock->rightlink = NULL;  in deque_pop()
183             deque->rightblock = prevblock;  in deque_pop()
196     block *prevblock;  in deque_popleft()  local
217             prevblock = deque->leftblock->rightlink;  in deque_popleft()
219             assert(prevblock != NULL);  in deque_popleft()
220             prevblock->leftlink = NULL;  in deque_popleft()
221             deque->leftblock = prevblock;  in deque_popleft()
454             block *prevblock = deque->rightblock->leftlink;  in _deque_rotate()  local
458             prevblock->rightlink = NULL;  in _deque_rotate()
459             deque->rightblock = prevblock;  in _deque_rotate()
646     block *prevblock;  in deque_clear()  local
696             prevblock = leftblock;  in deque_clear()
699             freeblock(prevblock);  in deque_clear()