Fix Vec::map_in_place not doing what is written in the comment

rust-lang · Nov 12, 2014 · 59b3c83 · 59b3c83 · bors · Nov 21, 2014
1 parent e1149f0
commit 59b3c83
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/src/libcollections/vec.rs b/src/libcollections/vec.rs
@@ -1661,7 +1661,10 @@ impl<T> Vec<T> {
             // Create a `Vec` from our `PartialVecZeroSized` and make sure the
             // destructor of the latter will not run. None of this can panic.
             let mut result = Vec::new();
-            unsafe { result.set_len(pv.num_u); }
+            unsafe {
+                result.set_len(pv.num_u);
+                mem::forget(pv);
+            }
             result
         }
     }