diff options
| -rw-r--r-- | src/libcollections/bit.rs | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/src/libcollections/bit.rs b/src/libcollections/bit.rs index d9151298a35..ba3e144e628 100644 --- a/src/libcollections/bit.rs +++ b/src/libcollections/bit.rs @@ -210,15 +210,13 @@ impl BitVec { assert_eq!(self.len(), other.len()); // This could theoretically be a `debug_assert!`. assert_eq!(self.storage.len(), other.storage.len()); - let mut changed = false; + let mut changed_bits = 0; for (a, b) in self.blocks_mut().zip(other.blocks()) { let w = op(*a, b); - if *a != w { - changed = true; - *a = w; - } + changed_bits |= *a ^ w; + *a = w; } - changed + changed_bits != 0 } /// Iterator over mutable refs to the underlying blocks of data. |