diff options
| -rw-r--r-- | src/libcore/iter/sources.rs | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/src/libcore/iter/sources.rs b/src/libcore/iter/sources.rs index da346eaf1db..b988ce73bde 100644 --- a/src/libcore/iter/sources.rs +++ b/src/libcore/iter/sources.rs @@ -12,7 +12,7 @@ use fmt; use marker; use usize; -use super::FusedIterator; +use super::{FusedIterator, TrustedLen}; /// An iterator that repeats an element endlessly. /// @@ -138,6 +138,9 @@ impl<T> ExactSizeIterator for Empty<T> { } } +#[unstable(feature = "trusted_len", issue = "37572")] +unsafe impl<T> TrustedLen for Empty<T> {} + #[unstable(feature = "fused", issue = "35602")] impl<T> FusedIterator for Empty<T> {} @@ -216,6 +219,9 @@ impl<T> ExactSizeIterator for Once<T> { } } +#[unstable(feature = "trusted_len", issue = "37572")] +unsafe impl<T> TrustedLen for Once<T> {} + #[unstable(feature = "fused", issue = "35602")] impl<T> FusedIterator for Once<T> {} |