36 lines
981 B
Rust
36 lines
981 B
Rust
// 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 unresolved value `n`
|
|
//~| ERROR unresolved value `n`
|
|
//~| ERROR unresolved value `n`
|
|
//~| ERROR unresolved value `n`
|
|
|
|
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!());
|
|
}
|
|
}
|