rust/src/test/ui/run-pass/hygiene/trait_items.rs

// 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.

// ignore-pretty pretty-printing is unhygienic

#![feature(decl_macro)]

macro m($T:ident, $f:ident) {
    pub trait $T {
        fn f(&self) -> u32 { 0 }
        fn $f(&self) -> i32 { 0 }
    }
    impl $T for () {}

    let _: u32 = ().f();
    let _: i32 = ().$f();
}

fn main() {
    m!(T, f);
    let _: i32 = ().f();
}