diff options
| -rw-r--r-- | library/core/src/mem/mod.rs | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/library/core/src/mem/mod.rs b/library/core/src/mem/mod.rs index a02c400557b..37e8d65db6a 100644 --- a/library/core/src/mem/mod.rs +++ b/library/core/src/mem/mod.rs @@ -933,7 +933,8 @@ pub fn drop<T>(_x: T) {} /// ``` #[inline] #[stable(feature = "rust1", since = "1.0.0")] -pub unsafe fn transmute_copy<T, U>(src: &T) -> U { +#[rustc_const_unstable(feature = "const_transmute_copy", issue = "83165")] +pub const unsafe fn transmute_copy<T, U>(src: &T) -> U { // If U has a higher alignment requirement, src may not be suitably aligned. if align_of::<U>() > align_of::<T>() { // SAFETY: `src` is a reference which is guaranteed to be valid for reads. |