tag	line	file	source code
unp	479	ipc/sem.c	struct sem_undo *u, *un = NULL, **up, **unp;
unp	489	ipc/sem.c	for (unp = &sma->undo; (un = *unp); unp = &un->id_next) {
unp	496	ipc/sem.c	*unp = un->id_next;