| // Copyright 2015 The Rust Project Developers. See the COPYRIGHT |
| // file at the top-level directory of this distribution and at |
| // http://rust-lang.org/COPYRIGHT. |
| // |
| // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or |
| // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license |
| // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your |
| // option. This file may not be copied, modified, or distributed |
| // except according to those terms. |
| |
| // Test for a potential corner case in current impl where you have an |
| // auto trait (Magic1) that depends on a normal trait (Magic2) which |
| // in turn depends on the auto trait (Magic1). This was incorrectly |
| // being considered coinductive, but because of the normal trait |
| // interfering, it should not be. |
| |
| #![feature(optin_builtin_traits)] |
| |
| trait Magic1: Magic2 { } |
| impl Magic1 for .. {} |
| |
| trait Magic2 { } |
| impl<T: Magic1> Magic2 for T { } |
| |
| fn is_magic1<T: Magic1>() { } |
| |
| #[derive(Debug)] |
| struct NoClone; |
| |
| fn main() { |
| is_magic1::<NoClone>(); //~ ERROR E0275 |
| } |
