mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-27 17:24:06 +00:00
27 lines
574 B
Rust
27 lines
574 B
Rust
// 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!());
|
|
}
|
|
}
|