#endif
for (i = 0; i < 8; i++)
s->iv[i] = iv[i];
- /* We could initialize s->mm to zero, but why bother? */
+
+ /* Enable the following memset if you're worried about used-uninitialized
+ warnings involving code in isaac_refill from tools like valgrind.
+ Since this buffer is used to accumulate pseudo-random data, there's
+ no harm, and maybe even some benefit, in using it uninitialized. */
+#if AVOID_USED_UNINITIALIZED_WARNINGS
+ memset (s->mm, 0, sizeof s->mm);
+#endif
/* s->c gets used for a data pointer during the seeding phase */
s->a = s->b = s->c = 0;