/
shadowed-type-parameter.rs
40 lines (30 loc) · 1.15 KB
/
shadowed-type-parameter.rs
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// Copyright 2013 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 shadowed lifetimes generate an error.
#![feature(box_syntax)]
struct Foo<T>(T);
impl<T> Foo<T> {
fn shadow_in_method<T>(&self) {}
//~^ ERROR type parameter `T` shadows another type parameter
fn not_shadow_in_item<U>(&self) {
struct Bar<T, U>(T,U); // not a shadow, separate item
fn foo<T, U>() {} // same
}
}
trait Bar<T> {
fn dummy(&self) -> T;
fn shadow_in_required<T>(&self);
//~^ ERROR type parameter `T` shadows another type parameter
fn shadow_in_provided<T>(&self) {}
//~^ ERROR type parameter `T` shadows another type parameter
fn not_shadow_in_required<U>(&self);
fn not_shadow_in_provided<U>(&self) {}
}
fn main() {}