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//@ run-pass
#![allow(dead_code)]
// Test that pointers to extern types can be cast from/to usize,
// despite being !Sized.
#![feature(extern_types, sized_hierarchy)]
use std::marker::PointeeSized;
extern "C" {
type A;
}
struct Foo {
x: u8,
tail: A,
}
struct Bar<T: PointeeSized> {
x: u8,
tail: T,
}
#[cfg(target_pointer_width = "32")]
const MAGIC: usize = 0xdeadbeef;
#[cfg(target_pointer_width = "64")]
const MAGIC: usize = 0x12345678deadbeef;
fn main() {
assert_eq!((MAGIC as *const A) as usize, MAGIC);
assert_eq!((MAGIC as *const Foo) as usize, MAGIC);
assert_eq!((MAGIC as *const Bar<A>) as usize, MAGIC);
assert_eq!((MAGIC as *const Bar<Bar<A>>) as usize, MAGIC);
}
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