33 lines
1.0 KiB
Rust
33 lines
1.0 KiB
Rust
// 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
|
|
}
|