diff options
Diffstat (limited to 'library/alloc/src')
| -rw-r--r-- | library/alloc/src/sync.rs | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/library/alloc/src/sync.rs b/library/alloc/src/sync.rs index 11e7128e677..8eee7cff208 100644 --- a/library/alloc/src/sync.rs +++ b/library/alloc/src/sync.rs @@ -1397,6 +1397,8 @@ impl<T: ?Sized> Arc<T> { /// different types. See [`mem::transmute`][transmute] for more information /// on what restrictions apply in this case. /// + /// The raw pointer must point to a block of memory allocated by the global allocator. + /// /// The user of `from_raw` has to make sure a specific value of `T` is only /// dropped once. /// @@ -1452,7 +1454,8 @@ impl<T: ?Sized> Arc<T> { /// /// The pointer must have been obtained through `Arc::into_raw`, and the /// associated `Arc` instance must be valid (i.e. the strong count must be at - /// least 1) for the duration of this method. + /// least 1) for the duration of this method, and `ptr` must point to a block of memory + /// allocated by the global allocator. /// /// # Examples /// @@ -1486,7 +1489,8 @@ impl<T: ?Sized> Arc<T> { /// /// The pointer must have been obtained through `Arc::into_raw`, and the /// associated `Arc` instance must be valid (i.e. the strong count must be at - /// least 1) when invoking this method. This method can be used to release the final + /// least 1) when invoking this method, and `ptr` must point to a block of memory + /// allocated by the global allocator. This method can be used to release the final /// `Arc` and backing storage, but **should not** be called after the final `Arc` has been /// released. /// |