---

yaml
---
r: 128474
b: refs/heads/auto
c: dcccf82
h: refs/heads/master
v: v3

Author: Gankra

[refs]

@@ -13,7 +13,7 @@ refs/heads/try3: 9387340aab40a73e8424c48fd42f0c521a4875c0
 refs/tags/release-0.3.1: 495bae036dfe5ec6ceafd3312b4dca48741e845b
 refs/tags/release-0.4: e828ea2080499553b97dfe33b3f4d472b4562ad7
 refs/tags/release-0.5: 7e3bcfbf21278251ee936ad53e92e9b719702d73
-refs/heads/auto: 40c45169b7b280bbe27380fc5f1c350d25946ec2
+refs/heads/auto: dcccf824b1096cc596671724ebf42b8d3ed35705
 refs/heads/servo: af82457af293e2a842ba6b7759b70288da276167
 refs/tags/release-0.6: b4ebcfa1812664df5e142f0134a5faea3918544c
 refs/tags/0.1: b19db808c2793fe2976759b85a355c3ad8c8b336

branches/auto/src/libcollections/bitv.rs

@@ -1522,7 +1522,7 @@ impl Set<uint> for BitvSet {
 
     #[inline]
     fn is_disjoint(&self, other: &BitvSet) -> bool {
-        self.intersection(other).count() > 0
+        self.intersection(other).next().is_none()
     }
 
     #[inline]
@@ -2264,6 +2264,24 @@ mod tests {
         assert!(set1.is_subset(&set2)); // { 2 }  { 2, 4 }
     }
 
+    #[test]
+    fn test_bitv_set_is_disjoint() {
+        let a = BitvSet::from_bitv(from_bytes([0b10100010]));
+        let b = BitvSet::from_bitv(from_bytes([0b01000000]));
+        let c = BitvSet::new();
+        let d = BitvSet::from_bitv(from_bytes([0b00110000]));
+
+        assert!(!a.is_disjoint(&d));
+        assert!(!d.is_disjoint(&a));
+
+        assert!(a.is_disjoint(&b))
+        assert!(a.is_disjoint(&c))
+        assert!(b.is_disjoint(&a))
+        assert!(b.is_disjoint(&c))
+        assert!(c.is_disjoint(&a))
+        assert!(c.is_disjoint(&b))
+    }
+
     #[test]
     fn test_bitv_set_intersect_with() {
         // Explicitly 0'ed bits