18 lines
578 B
Rust
18 lines
578 B
Rust
#![allow(unused_variables)]
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use std::mem;
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pub fn safe(x: &mut i32, y: &mut i32) {} //~ ERROR barrier
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fn main() {
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let mut x = 0;
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let xraw: *mut i32 = unsafe { mem::transmute(&mut x) };
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// We need to apply some tricky to be able to call `safe` with two mutable references
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// with the same tag: We transmute both the fn ptr (to take raw ptrs) and the argument
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// (to be raw, but still have the unique tag).
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let safe_raw: fn(x: *mut i32, y: *mut i32) = unsafe {
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mem::transmute::<fn(&mut i32, &mut i32), _>(safe)
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};
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safe_raw(xraw, xraw);
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}
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