stack_op
stack_op(INIT, NULL, stack, &stkptr);
stack_op(INIT, NULL, stack, &stkptr);
stack_op(INIT, NULL, stack, &stkptr);
extern int stack_op(int, char *, char **, char ***);
(void) stack_op(POP, (char *)NULL, stack, stkptr);
(void) stack_op(POP, (char *)NULL, stack, stkptr);
(void) stack_op(POP, (char *)NULL, stack, stkptr);
(void) stack_op(POP, (char *)NULL, stack, stkptr);
if (!stack_op(PUSH, fname, stack, stkptr)) {
(void) stack_op(INIT, NULL, stack, stkptr);