17 lines
437 B
Rust
17 lines
437 B
Rust
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fn foo(x: &mut i32) -> i32 {
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*x = 5;
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unknown_code(&*x);
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*x // must return 5
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}
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fn main() {
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println!("{}", foo(&mut 0));
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}
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// If we replace the `*const` by `&`, my current dev version of miri
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// *does* find the problem, but not for a good reason: It finds it because
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// of barriers, and we shouldn't rely on unknown code using barriers.
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fn unknown_code(x: *const i32) {
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unsafe { *(x as *mut i32) = 7; } //~ ERROR barrier
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}
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