2 #![feature(box_syntax)]
4 struct Fat<T: ?Sized> {
11 fn foo(x: &Fat<[isize]>) {
13 assert_eq!(x.ptr.len(), 3);
15 assert_eq!(x.ptr[1], 2);
17 assert_eq!(x.f2, "some str");
20 fn foo2<T:ToBar>(x: &Fat<[T]>) {
23 assert_eq!(x.ptr.len(), 3);
24 assert_eq!(y[0].to_bar(), bar);
25 assert_eq!(x.ptr[1].to_bar(), bar);
27 assert_eq!(x.f2, "some str");
30 fn foo3(x: &Fat<Fat<[isize]>>) {
33 assert_eq!(x.f2, "some str");
34 assert_eq!(x.ptr.f1, 8);
35 assert_eq!(x.ptr.f2, "deep str");
36 assert_eq!(x.ptr.ptr.len(), 3);
38 assert_eq!(x.ptr.ptr[1], 2);
42 #[derive(Copy, Clone, PartialEq, Eq, Debug)]
46 fn to_bar(&self) -> Bar;
50 fn to_bar(&self) -> Bar {
56 // With a vec of ints.
57 let f1 = Fat { f1: 5, f2: "some str", ptr: [1, 2, 3] };
61 let f3: &Fat<[isize]> = f2;
63 let f4: &Fat<[isize]> = &f1;
65 let f5: &Fat<[isize]> = &Fat { f1: 5, f2: "some str", ptr: [1, 2, 3] };
68 // With a vec of Bars.
70 let f1 = Fat { f1: 5, f2: "some str", ptr: [bar, bar, bar] };
74 let f3: &Fat<[Bar]> = f2;
76 let f4: &Fat<[Bar]> = &f1;
78 let f5: &Fat<[Bar]> = &Fat { f1: 5, f2: "some str", ptr: [bar, bar, bar] };
82 let f5: &mut Fat<[isize]> = &mut Fat { f1: 5, f2: "some str", ptr: [1, 2, 3] };
84 assert_eq!(f5.ptr[0], 1);
85 assert_eq!(f5.ptr[1], 34);
86 assert_eq!(f5.ptr[2], 3);
89 let f5: &Fat<[isize]> = &Fat { f1: 5, f2: "some str", ptr: [] };
90 assert!(f5.ptr.is_empty());
91 let f5: &Fat<[Bar]> = &Fat { f1: 5, f2: "some str", ptr: [] };
92 assert!(f5.ptr.is_empty());
95 let f1 = Fat { f1: 5, f2: "some str", ptr: Fat { f1: 8, f2: "deep str", ptr: [1, 2, 3]} };
99 let f3: &Fat<Fat<[isize]>> = f2;
101 let f4: &Fat<Fat<[isize]>> = &f1;
103 let f5: &Fat<Fat<[isize]>> =
104 &Fat { f1: 5, f2: "some str", ptr: Fat { f1: 8, f2: "deep str", ptr: [1, 2, 3]} };
108 let f1 = Box::new([1, 2, 3]);
109 assert_eq!((*f1)[1], 2);
110 let f2: Box<[isize]> = f1;
111 assert_eq!((*f2)[1], 2);
114 let f1 : Box<Fat<[isize; 3]>> = box Fat { f1: 5, f2: "some str", ptr: [1, 2, 3] };
116 let f2 : Box<Fat<[isize]>> = f1;
119 let f3 : Box<Fat<[isize]>> =
120 Box::<Fat<[_; 3]>>::new(Fat { f1: 5, f2: "some str", ptr: [1, 2, 3] });