rust/src/test/compile-fail/rfc1214-warn-and-error.rs
Niko Matsakis 9c5cfea43d traits: consider whether origin is RFC1214 when caching, ensuring
that the test rfc1214-warn-and-error.rs reports an error
2015-08-12 17:58:57 -04:00

38 lines
1012 B
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 that an RFC1214 warning from an earlier function (`foo`) does
// not suppress an error for the same problem (`WantEq<NotEq>`,
// `NotEq: !Eq`) in a later function (`bar)`. Earlier versions of the
// warning mechanism had an issue due to caching.
#![allow(dead_code)]
#![allow(unused_variables)]
struct WantEq<T:Eq> { t: T }
struct NotEq;
trait Trait<T> { }
fn foo() {
let x: Box<Trait<WantEq<NotEq>>> = loop { };
//~^ WARN E0277
}
fn bar() {
wf::<WantEq<NotEq>>();
//~^ ERROR E0277
}
fn wf<T>() { }
fn main() { }