Patrick Steinhardt [off-list ref] writes:

+		/*
+		 * We have already checked `last_found`, so there is no need to
+		 * re-check here.
+		 */
+		if (p == last_found && last_found != (void *)1)
+			continue;

Unrelated to the (void *)1 check, shouldn't this be in the beginning of
the loop?

-- 
Cheers,
Toon