| // 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. |
| |
| // macro f should not be able to inject a reference to 'n'. |
| |
| macro_rules! f { () => (n) } |
| //~^ ERROR cannot find value `n` in this scope |
| //~| ERROR cannot find value `n` in this scope |
| //~| ERROR cannot find value `n` in this scope |
| //~| ERROR cannot find value `n` in this scope |
| |
| fn main() -> (){ |
| for n in 0..1 { |
| println!("{}", f!()); |
| } |
| |
| if let Some(n) = None { |
| println!("{}", f!()); |
| } |
| |
| if false { |
| } else if let Some(n) = None { |
| println!("{}", f!()); |
| } |
| |
| while let Some(n) = None { |
| println!("{}", f!()); |
| } |
| } |
