17 lines
579 B
Rust
17 lines
579 B
Rust
//@ check-pass
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use std::ptr;
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static mut BYTE: u8 = 0;
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static mut BYTE_PTR: *mut u8 = ptr::addr_of_mut!(BYTE);
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// This code should remain unsafe because reading from a static mut is *always* unsafe.
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// An unsafe static's ident is a place expression in its own right, so despite the above being safe
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// (it's fine to create raw refs to places!) the following *reads* from the static mut place before
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// derefing it explicitly with the `*` below.
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static mut DEREF_BYTE_PTR: *mut u8 = unsafe { ptr::addr_of_mut!(*BYTE_PTR) };
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fn main() {
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let _ = unsafe { DEREF_BYTE_PTR };
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}
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