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1 | // Copyright 2014 The Rust Project Developers. See the COPYRIGHT |
2 | // file at the top-level directory of this distribution and at | |
3 | // http://rust-lang.org/COPYRIGHT. | |
4 | // | |
5 | // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or | |
6 | // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license | |
7 | // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your | |
8 | // option. This file may not be copied, modified, or distributed | |
9 | // except according to those terms. | |
10 | ||
11 | // Check that the user gets an errror if they omit a binding from an | |
12 | // object type. | |
13 | ||
14 | pub trait Foo { | |
15 | type A; | |
16 | type B; | |
17 | fn boo(&self) -> <Self as Foo>::A; | |
18 | } | |
19 | ||
20 | struct Bar; | |
21 | ||
22 | impl Foo for isize { | |
23 | type A = usize; | |
24 | type B = char; | |
25 | fn boo(&self) -> usize { | |
26 | 42 | |
27 | } | |
28 | } | |
29 | ||
30 | pub fn main() { | |
62682a34 | 31 | let a = &42isize as &Foo<A=usize, B=char>; |
1a4d82fc | 32 | |
62682a34 | 33 | let b = &42isize as &Foo<A=usize>; |
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34 | //~^ ERROR the value of the associated type `B` (from the trait `Foo`) must be specified |
35 | ||
62682a34 | 36 | let c = &42isize as &Foo<B=char>; |
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37 | //~^ ERROR the value of the associated type `A` (from the trait `Foo`) must be specified |
38 | ||
62682a34 | 39 | let d = &42isize as &Foo; |
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40 | //~^ ERROR the value of the associated type `A` (from the trait `Foo`) must be specified |
41 | //~| ERROR the value of the associated type `B` (from the trait `Foo`) must be specified | |
42 | } |