feat(utils): implement Zeroable for RawCell

Author: yvt

src/r3_core/src/utils/rawcell.rs

@@ -1,6 +1,6 @@
 use core::cell::UnsafeCell;
 
-use crate::utils::{Init, ZeroInit};
+use crate::utils::{Init, ZeroInit, Zeroable};
 
 /// Like `UnsafeCell`, but implements `Sync`.
 #[derive(Debug)]
@@ -29,3 +29,6 @@ impl<T: Init> Init for RawCell<T> {
     const INIT: Self = RawCell::new(T::INIT);
 }
 unsafe impl<T: ZeroInit> ZeroInit for RawCell<T> {}
+// FIXME: Derive this when <https://github.com/Lokathor/bytemuck/pull/148> is
+//        merged
+unsafe impl<T: Zeroable> Zeroable for RawCell<T> {}

src/r3_kernel/src/utils/mod.rs

@@ -56,7 +56,7 @@ mod rawcell;
 mod vec;
 pub use self::{aligned_storage::*, freeze::*, int::*, prio_bitmap::*, rawcell::*, vec::*};
 use r3_core::utils::{AllocError, Allocator, ConstAllocator};
-pub use r3_core::utils::{Init, ZeroInit};
+pub use r3_core::utils::{Init, ZeroInit, Zeroable};
 pub(crate) mod panicking;
 
 /// A "type function" producing a type.