Add a debug_assert to Vec::set_len

rust-lang · Jan 14, 2019 · 1fd971c · 1fd971c
1 parent a16e1a7
commit 1fd971c
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/src/liballoc/vec.rs b/src/liballoc/vec.rs
@@ -819,6 +819,8 @@ impl<T> Vec<T> {
     #[inline]
     #[stable(feature = "rust1", since = "1.0.0")]
     pub unsafe fn set_len(&mut self, new_len: usize) {
+        debug_assert!(new_len <= self.capacity());
+
         self.len = new_len;
     }