13 lines
336 B
Rust
13 lines
336 B
Rust
fn evil(x: &u32) {
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// mutating shared ref without `UnsafeCell`
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let x : *mut u32 = x as *const _ as *mut _;
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unsafe { *x = 42; }
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}
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fn main() {
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let target = Box::new(42); // has an implicit raw
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let ref_ = &*target;
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evil(ref_); // invalidates shared ref, activates raw
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let _x = *ref_; //~ ERROR is not frozen
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}
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