1 files changed, 2 insertions, 1 deletions
diff --git a/library/alloc/tests/vec.rs b/library/alloc/tests/vec.rs
index e0271187044..7ebed0d5ca6 100644
--- a/library/alloc/tests/vec.rs
+++ b/library/alloc/tests/vec.rs
@@ -1089,7 +1089,8 @@ fn test_into_iter_drop_allocator() {
         }
 
         unsafe fn deallocate(&self, ptr: NonNull<u8>, layout: Layout) {
-            System.deallocate(ptr, layout)
+            // Safety: Invariants passed to caller.
+            unsafe { System.deallocate(ptr, layout) }
         }
     }