Tweak the comments
diff --git a/Objects/setobject.c b/Objects/setobject.c
index 2d4d8cd..d638c13 100644
--- a/Objects/setobject.c
+++ b/Objects/setobject.c
@@ -763,7 +763,7 @@
Py_uhash_t hash = 1927868237UL;
setentry *entry;
- /* Make hash(frozenset({0})) distinct from hash(frozenset()) */
+ /* Initial dispersion based on the number of active entries */
hash *= (Py_uhash_t)PySet_GET_SIZE(self) + 1;
/* Xor-in shuffled bits from every entry's hash field because xor is
@@ -790,8 +790,10 @@
/* Disperse patterns arising in nested frozensets */
hash = hash * 69069U + 907133923UL;
+ /* -1 is reserved as an error code */
if (hash == (Py_uhash_t)-1)
hash = 590923713UL;
+
so->hash = hash;
return hash;
}