15 lines
451 B
Rust
15 lines
451 B
Rust
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// compile-flags: -Zmiri-disable-validation
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use std::mem::MaybeUninit;
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fn main() { unsafe {
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let mut x = MaybeUninit::<i64>::uninit();
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// Put in a ptr.
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x.as_mut_ptr().cast::<&i32>().write_unaligned(&0);
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// Overwrite parts of that pointer with 'uninit' through a Scalar.
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let ptr = x.as_mut_ptr().cast::<i32>();
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*ptr = MaybeUninit::uninit().assume_init();
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// Reading this back should hence work fine.
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let _c = *ptr;
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} }
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