static char infix_next(struct filter_parse_state *ps)
{
+ if (!ps->infix.cnt)
+ return 0;
+
ps->infix.cnt--;
return ps->infix.string[ps->infix.tail++];
static void infix_advance(struct filter_parse_state *ps)
{
+ if (!ps->infix.cnt)
+ return;
+
ps->infix.cnt--;
ps->infix.tail++;
}
if (elt->op != OP_NOT)
cnt--;
n_normal_preds++;
- WARN_ON_ONCE(cnt < 0);
+ /* all ops should have operands */
+ if (cnt < 0)
+ break;
}
if (cnt != 1 || !n_normal_preds || n_logical_preds >= n_normal_preds) {