Auto merge of #46581 - tmccombs:drain_filter_drop, r=sfackler

Add Drop impl for linked_list::DrainFilter This is part of #43244. See #43244 (comment)
rust-lang · Dec 9, 2017 · 6537fd1 · 6537fd1
2 parents 61cc23e + cdf1d7d
commit 6537fd1
Showing 1 changed file with 9 additions and 0 deletions.
diff --git a/src/liballoc/linked_list.rs b/src/liballoc/linked_list.rs
@@ -1071,6 +1071,15 @@ impl<'a, T, F> Iterator for DrainFilter<'a, T, F>
     }
 }
 
+#[unstable(feature = "drain_filter", reason = "recently added", issue = "43244")]
+impl<'a, T, F> Drop for DrainFilter<'a, T, F>
+    where F: FnMut(&mut T) -> bool,
+{
+    fn drop(&mut self) {
+        for _ in self { }
+    }
+}
+
 #[unstable(feature = "drain_filter", reason = "recently added", issue = "43244")]
 impl<'a, T: 'a + fmt::Debug, F> fmt::Debug for DrainFilter<'a, T, F>
     where F: FnMut(&mut T) -> bool