rust/tests/compile-fail/cast_fn_ptr_unsafe2.rs

// just making sure that fn -> unsafe fn casts are handled by rustc so miri doesn't have to
fn main() {
    fn f() {}

    let g = f as fn() as fn(i32) as unsafe fn(i32); //~ERROR: non-primitive cast: `fn()` as `fn(i32)`

    unsafe {
        g(42);
    }
}