src/test/compile-fail/trait-object-macro-matcher.rs


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21

// Copyright 2017 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.

// `ty` matcher accepts trait object types

macro_rules! m {
    ($t: ty) => ( let _: $t; )
}

fn main() {
    m!(Copy + Send + 'static); //~ ERROR the trait `std::marker::Copy` cannot be made into an object
    m!('static + Send);
    m!('static +); //~ ERROR at least one non-builtin trait is required for an object type
}