tree_eventcmp
if (tree_eventcmp(np,
if (tree_eventcmp(stmtnp->u.stmt.np, lhs) != 0)
return (lut_add(root, (void *)enp, (void *)np, (lut_cmp)tree_eventcmp));
lut_lookup(root, (void *)enp, (lut_cmp)tree_eventcmp));
lut_lookup_lhs(root, (void *)enp, (lut_cmp)tree_eventcmp));
if (arg != NULL && tree_eventcmp(serd, (struct node *)arg) != 0)
int tree_eventcmp(struct node *np1, struct node *np2);