diff options
Diffstat (limited to 'src/library')
| -rw-r--r-- | src/library/scala/collection/mutable/BitSet.scala | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/src/library/scala/collection/mutable/BitSet.scala b/src/library/scala/collection/mutable/BitSet.scala index 78150b5e88..e92d48cfeb 100644 --- a/src/library/scala/collection/mutable/BitSet.scala +++ b/src/library/scala/collection/mutable/BitSet.scala @@ -121,8 +121,10 @@ class BitSet(protected final var elems: Array[Long]) extends AbstractSet[Int] * @return the bitset itself. */ def &= (other: BitSet): this.type = { - ensureCapacity(other.nwords - 1) - for (i <- 0 until other.nwords) + // Different from other operations: no need to ensure capacity because + // anything beyond the capacity is 0. Since we use other.word which is 0 + // off the end, we also don't need to make sure we stay in bounds there. + for (i <- 0 until nwords) elems(i) = elems(i) & other.word(i) this } |