2 #![allow(type_alias_bounds)]
4 #![allow(unused_features)]
5 #![feature(unsized_tuple_coercion)]
7 type Fat<T: ?Sized> = (isize, &'static str, T);
9 #[derive(Copy, Clone, PartialEq, Eq, Debug)]
12 #[derive(Copy, Clone, PartialEq, Eq)]
18 fn to_bar(&self) -> Bar;
19 fn to_val(&self) -> isize;
23 fn to_bar(&self) -> Bar {
26 fn to_val(&self) -> isize {
31 fn to_bar(&self) -> Bar {
34 fn to_val(&self) -> isize {
40 fn foo(x: &Fat<dyn ToBar>) {
42 assert_eq!(x.1, "some str");
43 assert_eq!(x.2.to_bar(), Bar);
44 assert_eq!(x.2.to_val(), 42);
47 assert_eq!(y.to_bar(), Bar);
48 assert_eq!(y.to_val(), 42);
51 fn bar(x: &dyn ToBar) {
52 assert_eq!(x.to_bar(), Bar);
53 assert_eq!(x.to_val(), 42);
56 fn baz(x: &Fat<Fat<dyn ToBar>>) {
58 assert_eq!(x.1, "some str");
59 assert_eq!((x.2).0, 8);
60 assert_eq!((x.2).1, "deep str");
61 assert_eq!((x.2).2.to_bar(), Bar);
62 assert_eq!((x.2).2.to_val(), 42);
65 assert_eq!(y.to_bar(), Bar);
66 assert_eq!(y.to_val(), 42);
71 let f1 = (5, "some str", Bar1 {f :42});
75 let f3: &Fat<dyn ToBar> = f2;
77 let f4: &Fat<dyn ToBar> = &f1;
79 let f5: &Fat<dyn ToBar> = &(5, "some str", Bar1 {f :42});
83 let f6: &Fat<dyn ToBar> = &(5, "some str", Bar);
84 assert_eq!(f6.2.to_bar(), Bar);
88 let f7: Box<dyn ToBar> = Box::new(Bar1 {f :42});
92 let f1 = (5, "some str", (8, "deep str", Bar1 {f :42}));
96 let f3: &Fat<Fat<dyn ToBar>> = f2;
98 let f4: &Fat<Fat<dyn ToBar>> = &f1;
100 let f5: &Fat<Fat<dyn ToBar>> = &(5, "some str", (8, "deep str", Bar1 {f :42}));