Rollup merge of #125995 - kpreid:const-uninit-stable, r=Nilstrieb · model-checking/verify-rust-std@1632165 (original) (raw)
`@@ -120,12 +120,8 @@ use crate::slice;
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`/// use std::mem::{self, MaybeUninit};
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`///
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`/// let data = {
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/// // Create an uninitialized array of MaybeUninit. The assume_init is
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/// // safe because the type we are claiming to have initialized here is a
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/// // bunch of MaybeUninits, which do not require initialization.
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``
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/// let mut data: [MaybeUninit<Vec>; 1000] = unsafe {
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/// MaybeUninit::uninit().assume_init()
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/// };
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/// // Create an uninitialized array of MaybeUninit.
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/// let mut data: [MaybeUninit<Vec>; 1000] = [const { MaybeUninit::uninit() }; 1000];
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`///
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`` /// // Dropping a MaybeUninit does nothing, so if there is a panic during this loop,
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`/// // we have a memory leak, but there is no memory safety issue.
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`@@ -147,10 +143,8 @@ use crate::slice;
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```` /// ```
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`/// use std::mem::MaybeUninit;
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`///
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/// // Create an uninitialized array of MaybeUninit. The assume_init is
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``
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/// // safe because the type we are claiming to have initialized here is a
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``
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/// // bunch of MaybeUninits, which do not require initialization.
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``
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/// let mut data: [MaybeUninit; 1000] = unsafe { MaybeUninit::uninit().assume_init() };
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/// // Create an uninitialized array of MaybeUninit.
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/// let mut data: [MaybeUninit; 1000] = [const { MaybeUninit::uninit() }; 1000];
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`/// // Count the number of elements we have assigned.
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`/// let mut data_len: usize = 0;
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`///
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`@@ -348,8 +342,7 @@ impl MaybeUninit {
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`#[must_use]
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`#[inline(always)]
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`pub const fn uninit_array() -> [Self; N] {
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// SAFETY: An uninitialized [MaybeUninit<_>; LEN] is valid.
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unsafe { MaybeUninit::<[MaybeUninit; N]>::uninit().assume_init() }
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[const { MaybeUninit::uninit() }; N]
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`}
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``
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`` /// Creates a new MaybeUninit<T> in an uninitialized state, with the memory being
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