1 // test that ordinary fat pointer operations work.
3 struct Wrapper<T: ?Sized>(u32, T);
5 struct FatPtrContainer<'a> {
9 fn fat_ptr_project(a: &Wrapper<[u8]>) -> &[u8] {
13 fn fat_ptr_simple(a: &[u8]) -> &[u8] {
17 fn fat_ptr_via_local(a: &[u8]) -> &[u8] {
22 fn fat_ptr_from_struct(s: FatPtrContainer) -> &[u8] {
26 fn fat_ptr_to_struct(a: &[u8]) -> FatPtrContainer {
27 FatPtrContainer { ptr: a }
30 fn fat_ptr_store_to<'a>(a: &'a [u8], b: &mut &'a [u8]) {
34 fn fat_ptr_constant() -> &'static str {
39 let a = Wrapper(4, [7, 6, 5]);
41 let p = fat_ptr_project(&a);
42 let p = fat_ptr_simple(p);
43 let p = fat_ptr_via_local(p);
44 let p = fat_ptr_from_struct(fat_ptr_to_struct(p));
46 let mut target: &[u8] = &[42];
47 fat_ptr_store_to(p, &mut target);
48 assert_eq!(target, &a.1);
50 assert_eq!(fat_ptr_constant(), "HELLO");