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-rw-r--r--src/liballoc/string.rs4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/liballoc/string.rs b/src/liballoc/string.rs
index 3fdcf95ccaa..63f7769fee5 100644
--- a/src/liballoc/string.rs
+++ b/src/liballoc/string.rs
@@ -2377,6 +2377,10 @@ impl Iterator for Drain<'_> {
     fn size_hint(&self) -> (usize, Option<usize>) {
         self.iter.size_hint()
     }
+    #[inline]
+    fn last(mut self) -> Option<char> {
+        self.next_back()
+    }
 }
 
 #[stable(feature = "drain", since = "1.6.0")]