2 // As dst-struct.rs, but the unsized field is the only field in the struct.
5 struct Fat<T: ?Sized> {
10 fn foo(x: &Fat<[isize]>) {
12 assert_eq!(x.ptr.len(), 3);
14 assert_eq!(x.ptr[1], 2);
17 fn foo2<T:ToBar>(x: &Fat<[T]>) {
20 assert_eq!(x.ptr.len(), 3);
21 assert_eq!(y[0].to_bar(), bar);
22 assert_eq!(x.ptr[1].to_bar(), bar);
25 #[derive(Copy, Clone, PartialEq, Eq, Debug)]
29 fn to_bar(&self) -> Bar;
33 fn to_bar(&self) -> Bar {
39 // With a vec of ints.
40 let f1 = Fat { ptr: [1, 2, 3] };
44 let f3: &Fat<[isize]> = f2;
46 let f4: &Fat<[isize]> = &f1;
48 let f5: &Fat<[isize]> = &Fat { ptr: [1, 2, 3] };
51 // With a vec of Bars.
53 let f1 = Fat { ptr: [bar, bar, bar] };
57 let f3: &Fat<[Bar]> = f2;
59 let f4: &Fat<[Bar]> = &f1;
61 let f5: &Fat<[Bar]> = &Fat { ptr: [bar, bar, bar] };
65 let f5: &mut Fat<[isize]> = &mut Fat { ptr: [1, 2, 3] };
67 assert_eq!(f5.ptr[0], 1);
68 assert_eq!(f5.ptr[1], 34);
69 assert_eq!(f5.ptr[2], 3);
72 let f5: &Fat<[isize]> = &Fat { ptr: [] };
73 assert!(f5.ptr.is_empty());
74 let f5: &Fat<[Bar]> = &Fat { ptr: [] };
75 assert!(f5.ptr.is_empty());