diff options
Diffstat (limited to 'src/libcore/mem/manually_drop.rs')
| -rw-r--r-- | src/libcore/mem/manually_drop.rs | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/libcore/mem/manually_drop.rs b/src/libcore/mem/manually_drop.rs index 3ad1223e331..bb353993236 100644 --- a/src/libcore/mem/manually_drop.rs +++ b/src/libcore/mem/manually_drop.rs @@ -119,6 +119,8 @@ impl<T: ?Sized> ManuallyDrop<T> { /// This function runs the destructor of the contained value and thus the wrapped value /// now represents uninitialized data. It is up to the user of this method to ensure the /// uninitialized data is not actually used. + /// In particular, this function can only be called called at most once + /// for a given instance of `ManuallyDrop<T>`. /// /// [`ManuallyDrop::into_inner`]: #method.into_inner #[stable(feature = "manually_drop", since = "1.20.0")] |