1 // Copyright 2016 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
12 ( $ctx:expr, $( $args:expr),* ) => {
14 //~^ no field `trace` on type `&T`
15 println!( $( $args, )* );
20 // Create a structure.
25 // Generic wrapper calls log! with a structure.
26 fn wrap<T>(context: &T) -> ()
28 log!(context, "entered wrapper");
29 //~^ in this expansion of log!
33 // Create a structure.
34 let x = Foo { trace: true };
35 log!(x, "run started");
36 // Apply a closure which accesses internal fields.
38 log!(x, "run finished");