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Add regression tests for #20763. Fixes #20763.

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This commit is contained in:
Niko Matsakis 2015-01-16 17:22:28 -05:00
parent 1138579bf4
commit fe0868b89b
2 changed files with 59 additions and 0 deletions
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32
src/test/run-pass/issue-20763-1.rs Normal file
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// 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.
trait T0 { type O; }
struct S<A>(A);
impl<A> T0 for S<A> { type O = A; }
trait T1: T0 {
// this looks okay but as we see below, `f` is unusable
fn m0<F: Fn(<Self as T0>::O) -> bool>(self, f: F) -> bool;
}
// complains about the bounds on F here not being required by the trait
impl<A> T1 for S<A> {
fn m0<F: Fn(A) -> bool>(self, f: F) -> bool { f(self.0) }
}
// // complains about mismatched types: <S<A> as T0>::O vs. A
// impl<A> T1 for S<A>
// {
// fn m0<F: Fn(<Self as T0>::O) -> bool>(self, f: F) -> bool { f(self.0) }
// }
fn main() { }

27
src/test/run-pass/issue-20763-2.rs Normal file
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// 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.
trait T0 { type O; }
struct S<A>(A);
impl<A> T0 for S<A> { type O = A; }
trait T1: T0 {
// this looks okay but as we see below, `f` is unusable
fn m0<F: Fn(<Self as T0>::O) -> bool>(self, f: F) -> bool;
}
// complains about mismatched types: <S<A> as T0>::O vs. A
impl<A> T1 for S<A>
{
fn m0<F: Fn(<Self as T0>::O) -> bool>(self, f: F) -> bool { f(self.0) }
}
fn main() { }