Add diverging case to TrustedLen doc

rust-lang · Feb 2, 2018 · fa84cc4 · fa84cc4
1 parent f56ebc5
commit fa84cc4
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/src/libcore/iter/traits.rs b/src/libcore/iter/traits.rs
@@ -972,7 +972,8 @@ impl<'a, I: FusedIterator + ?Sized> FusedIterator for &'a mut I {}
 /// The upper bound must only be [`None`] if the actual iterator length is
 /// larger than [`usize::MAX`].
 ///
-/// The iterator must produce exactly the number of elements it reported.
+/// The iterator must produce exactly the number of elements it reported
+/// or diverge before reaching the end.
 ///
 /// # Safety
 ///