mirror of https://github.com/rust-lang/rust
54 lines
977 B
Rust
54 lines
977 B
Rust
// Macros with def-site hygiene still bring traits into scope.
|
|
// It is not clear whether this is desirable behavior or not.
|
|
// It is also not clear how to prevent it if it is not desirable.
|
|
|
|
//@ check-pass
|
|
|
|
#![feature(decl_macro)]
|
|
#![feature(trait_alias)]
|
|
|
|
mod traits {
|
|
pub trait Trait1 {
|
|
fn simple_import(&self) {}
|
|
}
|
|
pub trait Trait2 {
|
|
fn renamed_import(&self) {}
|
|
}
|
|
pub trait Trait3 {
|
|
fn underscore_import(&self) {}
|
|
}
|
|
pub trait Trait4 {
|
|
fn trait_alias(&self) {}
|
|
}
|
|
|
|
impl Trait1 for () {}
|
|
impl Trait2 for () {}
|
|
impl Trait3 for () {}
|
|
impl Trait4 for () {}
|
|
}
|
|
|
|
macro m1() {
|
|
use traits::Trait1;
|
|
}
|
|
macro m2() {
|
|
use traits::Trait2 as Alias;
|
|
}
|
|
macro m3() {
|
|
use traits::Trait3 as _;
|
|
}
|
|
macro m4() {
|
|
trait Alias = traits::Trait4;
|
|
}
|
|
|
|
fn main() {
|
|
m1!();
|
|
m2!();
|
|
m3!();
|
|
m4!();
|
|
|
|
().simple_import();
|
|
().renamed_import();
|
|
().underscore_import();
|
|
().trait_alias();
|
|
}
|