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rust: Eschew Box<MaybeUninit<T>>::write #1106

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rust: Eschew Box<MaybeUninit<T>>::write #1106

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6 changes: 4 additions & 2 deletions rust/kernel/alloc/box_ext.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -37,8 +37,10 @@ pub trait BoxExt<T>: Sized {

impl<T> BoxExt<T> for Box<T> {
fn new(x: T, flags: Flags) -> Result<Self, AllocError> {
let b = <Self as BoxExt<_>>::new_uninit(flags)?;
Ok(Box::write(b, x))
let mut b = <Self as BoxExt<_>>::new_uninit(flags)?;
b.write(x);
// SAFETY: We just wrote to it.
Ok(unsafe { b.assume_init() })
}

#[cfg(any(test, testlib))]
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