2594d56e32
into variance inference; fix various bugs in variance inference so that it considers the correct set of constraints; modify infer to consider the results of variance inference for type arguments.
22 lines
690 B
Rust
22 lines
690 B
Rust
// Copyright 2012 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 disallow lifetime parameters that are unused.
|
|
|
|
enum Foo<'a> { //~ ERROR parameter `'a` is never used
|
|
Foo1(Bar<'a>)
|
|
}
|
|
|
|
enum Bar<'a> { //~ ERROR parameter `'a` is never used
|
|
Bar1(Foo<'a>)
|
|
}
|
|
|
|
fn main() {}
|