1 // As dst-struct.rs, but the unsized field is the only field in the struct.
3 struct Fat<T: ?Sized> {
8 fn foo(x: &Fat<[isize]>) {
10 assert_eq!(x.ptr.len(), 3);
12 assert_eq!(x.ptr[1], 2);
15 fn foo2<T: ToBar>(x: &Fat<[T]>) {
18 assert_eq!(x.ptr.len(), 3);
19 assert_eq!(y[0].to_bar(), bar);
20 assert_eq!(x.ptr[1].to_bar(), bar);
23 #[derive(Copy, Clone, PartialEq, Eq, Debug)]
27 fn to_bar(&self) -> Bar;
31 fn to_bar(&self) -> Bar {
37 // With a vec of ints.
38 let f1 = Fat { ptr: [1, 2, 3] };
42 let f3: &Fat<[isize]> = f2;
44 let f4: &Fat<[isize]> = &f1;
46 let f5: &Fat<[isize]> = &Fat { ptr: [1, 2, 3] };
49 // With a vec of Bars.
51 let f1 = Fat { ptr: [bar, bar, bar] };
55 let f3: &Fat<[Bar]> = f2;
57 let f4: &Fat<[Bar]> = &f1;
59 let f5: &Fat<[Bar]> = &Fat { ptr: [bar, bar, bar] };
63 let f5: &mut Fat<[isize]> = &mut Fat { ptr: [1, 2, 3] };
65 assert_eq!(f5.ptr[0], 1);
66 assert_eq!(f5.ptr[1], 34);
67 assert_eq!(f5.ptr[2], 3);
70 let f5: &Fat<[isize]> = &Fat { ptr: [] };
71 assert!(f5.ptr.is_empty());
72 let f5: &Fat<[Bar]> = &Fat { ptr: [] };
73 assert!(f5.ptr.is_empty());