rust/src/test/compile-fail/issue-16401.rs

// Copyright 2014 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.

struct Slice<T> {
    data: *const T,
    len: usize,
}

fn main() {
    match () {
        Slice { data: data, len: len } => (),
        //~^ ERROR mismatched types
        //~| expected type `()`
        //~| found type `Slice<_>`
        //~| expected (), found struct `Slice`
        _ => unreachable!()
    }
}