src/tools/miri/tests/fail/dangling_pointers/dangling_pointer_project_underscore_match.rs

// Make sure we find these even with many checks disabled.
//@compile-flags: -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 (u8, u8, u8, u8)
    };
    unsafe {
        match (*p).1 {
            //~^ ERROR: out-of-bounds pointer arithmetic
            _ => {}
        }
    }
}