diff options
| -rw-r--r-- | library/core/src/iter/adapters/zip.rs | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/library/core/src/iter/adapters/zip.rs b/library/core/src/iter/adapters/zip.rs index 98b8dca9614..9f983534520 100644 --- a/library/core/src/iter/adapters/zip.rs +++ b/library/core/src/iter/adapters/zip.rs @@ -198,12 +198,13 @@ where Some((self.a.__iterator_get_unchecked(i), self.b.__iterator_get_unchecked(i))) } } else if A::may_have_side_effect() && self.index < self.a.size() { + let i = self.index; + self.index += 1; // match the base implementation's potential side effects - // SAFETY: we just checked that `self.index` < `self.a.len()` + // SAFETY: we just checked that `i` < `self.a.len()` unsafe { - self.a.__iterator_get_unchecked(self.index); + self.a.__iterator_get_unchecked(i); } - self.index += 1; None } else { None |