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Fix compiler warning

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This commit is contained in:
Jon Gjengset 2018-10-05 14:53:31 -04:00
parent a10769feba
commit 20d3ce0277
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GPG key ID: D64AC9D67176DC71
1 changed files with 4 additions and 4 deletions
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8
src/types/mod.rs
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@ -11,7 +11,7 @@ mod capabilities;
pub use self::capabilities::Capabilities; pub use self::capabilities::Capabilities;
pub struct ZeroCopy<D> { pub struct ZeroCopy<D> {
owned: Box<[u8]>, _owned: Box<[u8]>,
derived: D, derived: D,
} }
@ -35,14 +35,14 @@ impl<D> ZeroCopy<D> {
// the memory pointed to by `owned` now has a stable address (on the heap). // the memory pointed to by `owned` now has a stable address (on the heap).
// even if we move the `Box` (i.e., into `ZeroCopy`), a slice to it will remain valid. // even if we move the `Box` (i.e., into `ZeroCopy`), a slice to it will remain valid.
let owned = owned.into_boxed_slice(); let _owned = owned.into_boxed_slice();
// this is the unsafe part -- the implementor of `derive` must be aware that the reference // this is the unsafe part -- the implementor of `derive` must be aware that the reference
// they are passed is not *really* 'static, but rather the lifetime of `&self`. // they are passed is not *really* 'static, but rather the lifetime of `&self`.
let static_owned_ref: &'static [u8] = mem::transmute(&*owned); let static_owned_ref: &'static [u8] = mem::transmute(&*_owned);
Ok(ZeroCopy { Ok(ZeroCopy {
owned, _owned,
derived: derive(static_owned_ref)?, derived: derive(static_owned_ref)?,
}) })
} }