29 lines
859 B
Rust
29 lines
859 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 Cell is considered invariant with respect to its
|
|
// type.
|
|
|
|
use std::cell::Cell;
|
|
|
|
struct Foo<'a> {
|
|
x: Cell<Option<&'a isize>>,
|
|
}
|
|
|
|
fn use_<'short,'long>(c: Foo<'short>,
|
|
s: &'short isize,
|
|
l: &'long isize,
|
|
_where:Option<&'short &'long ()>) {
|
|
let _: Foo<'long> = c; //~ ERROR mismatched types
|
|
}
|
|
|
|
fn main() {
|
|
}
|