INSTR(op | !!b, w, b);
}
}
- if ((DA(&iv)[DA_LEN(&iv) - 1].op & ~1u) == MPRI_SUB) {
+ if (DA_LEN(&iv) && (DA(&iv)[DA_LEN(&iv) - 1].op & ~1u) == MPRI_SUB) {
mp_drop(r->p);
DA_DESTROY(&iv);
return (-1);
/* --- Wrap up --- */
r->in = DA_LEN(&iv);
- if (!r->s) {
+ if (!r->in)
+ r->iv = 0;
+ else if (!r->s) {
r->iv = xmalloc(r->in * sizeof(mpreduce_instr));
memcpy(r->iv, DA(&iv), r->in * sizeof(mpreduce_instr));
} else {
void mpreduce_destroy(mpreduce *r)
{
mp_drop(r->p);
- xfree(r->iv);
+ if (r->iv) xfree(r->iv);
}
/* --- @mpreduce_dump@ --- *