rust/tests/compile-fail/stacked_borrows/unescaped_local.rs

// Make sure we cannot use raw ptrs to access a local that
// we took the direct address of.
fn main() {
    let mut x = 42;
    let raw = &mut x as *mut i32 as usize as *mut i32;
    let _ptr = &mut x;
    unsafe { *raw = 13; } //~ ERROR borrow stack
}