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Add missing Send/Sync impls #225

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Feb 13, 2023
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Add missing Send/Sync impls #225

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8 changes: 8 additions & 0 deletions src/cell.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -47,6 +47,10 @@ pub struct Ref<'a, T: ?Sized + 'a> {
value: NonNull<T>,
}

// SAFETY: `Ref<'_, T> acts as a reference.
unsafe impl<'a, T: ?Sized + 'a> Sync for Ref<'a, T> where for<'b> &'b T: Sync {}
unsafe impl<'a, T: ?Sized + 'a> Send for Ref<'a, T> where for<'b> &'b T: Send {}

impl<'a, T: ?Sized> Ref<'a, T> {
/// Makes a new `Ref` for a component of the borrowed data which preserves
/// the existing borrow.
Expand Down Expand Up @@ -143,6 +147,10 @@ pub struct RefMut<'a, T: ?Sized + 'a> {
marker: PhantomData<&'a mut T>,
}

// SAFETY: `RefMut<'_, T> acts as a mutable reference.
unsafe impl<'a, T: ?Sized + 'a> Sync for RefMut<'a, T> where for<'b> &'b mut T: Sync {}
unsafe impl<'a, T: ?Sized + 'a> Send for RefMut<'a, T> where for<'b> &'b mut T: Send {}

impl<'a, T: ?Sized> RefMut<'a, T> {
/// Makes a new `RefMut` for a component of the borrowed data which
/// preserves the existing borrow.
Expand Down