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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 | // aux-build:crate_a1.rs | |
12 | // aux-build:crate_a2.rs | |
13 | ||
14 | // This tests the extra note reported when a type error deals with | |
15 | // seemingly identical types. | |
16 | // The main use case of this error is when there are two crates | |
17 | // (generally different versions of the same crate) with the same name | |
18 | // causing a type mismatch. Here, we simulate that error using block-scoped | |
19 | // aliased `extern crate` declarations. | |
20 | ||
21 | fn main() { | |
22 | let foo2 = {extern crate crate_a2 as a; a::Foo}; | |
23 | let bar2 = {extern crate crate_a2 as a; a::bar()}; | |
24 | { | |
25 | extern crate crate_a1 as a; | |
26 | a::try_foo(foo2); //~ ERROR mismatched types | |
27 | //~^ HELP run | |
28 | //~^^ NOTE Perhaps two different versions of crate `crate_a1` | |
29 | a::try_bar(bar2); //~ ERROR mismatched types | |
30 | //~^ HELP run | |
31 | //~^^ NOTE Perhaps two different versions of crate `crate_a1` | |
32 | } | |
33 | } |