rust/tests/fail/dangling_pointers/dangling_zst_deref.rs
2022-06-01 10:53:38 -04:00

12 lines
436 B
Rust

// Make sure we find these even with many checks disabled.
// Some optimizations remove ZST accesses, thus masking this UB.
// compile-flags: -Zmir-opt-level=0 -Zmiri-disable-alignment-check -Zmiri-disable-stacked-borrows -Zmiri-disable-validation
fn main() {
let p = {
let b = Box::new(42);
&*b as *const i32 as *const ()
};
let _x = unsafe { *p }; //~ ERROR dereferenced after this allocation got freed
}