| // Copyright 2016 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. |
| |
| // Regression test for #33344, initial version. This example allowed |
| // arbitrary trait bounds to be synthesized. |
| |
| trait Tweedledum: IntoIterator {} |
| trait Tweedledee: IntoIterator {} |
| |
| impl<T: Tweedledum> Tweedledee for T {} |
| impl<T: Tweedledee> Tweedledum for T {} |
| |
| trait Combo: IntoIterator {} |
| impl<T: Tweedledee + Tweedledum> Combo for T {} |
| |
| fn is_ee<T: Combo>(t: T) { |
| t.into_iter(); |
| } |
| |
| fn main() { |
| is_ee(4); |
| //~^ ERROR overflow evaluating the requirement `_: Tweedle |
| } |
