2 // test that ordinary fat pointer operations work.
4 struct Wrapper<T: ?Sized>(u32, T);
6 struct FatPtrContainer<'a> {
10 fn fat_ptr_project(a: &Wrapper<[u8]>) -> &[u8] {
14 fn fat_ptr_simple(a: &[u8]) -> &[u8] {
18 fn fat_ptr_via_local(a: &[u8]) -> &[u8] {
23 fn fat_ptr_from_struct(s: FatPtrContainer) -> &[u8] {
27 fn fat_ptr_to_struct(a: &[u8]) -> FatPtrContainer {
28 FatPtrContainer { ptr: a }
31 fn fat_ptr_store_to<'a>(a: &'a [u8], b: &mut &'a [u8]) {
35 fn fat_ptr_constant() -> &'static str {
40 let a = Wrapper(4, [7,6,5]);
42 let p = fat_ptr_project(&a);
43 let p = fat_ptr_simple(p);
44 let p = fat_ptr_via_local(p);
45 let p = fat_ptr_from_struct(fat_ptr_to_struct(p));
47 let mut target : &[u8] = &[42];
48 fat_ptr_store_to(p, &mut target);
49 assert_eq!(target, &a.1);
51 assert_eq!(fat_ptr_constant(), "HELLO");