rust/src/test/run-pass/issue-23808.rs

69 lines
1.6 KiB
Rust
Raw Normal View History

// Copyright 2015 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.
#![feature(associated_consts)]
#![deny(dead_code)]
// use different types / traits to test all combinations
trait Const {
const C: ();
}
trait StaticFn {
fn sfn();
}
struct ConstStruct;
struct StaticFnStruct;
enum ConstEnum {}
enum StaticFnEnum {}
struct AliasedConstStruct;
struct AliasedStaticFnStruct;
enum AliasedConstEnum {}
enum AliasedStaticFnEnum {}
type AliasConstStruct = AliasedConstStruct;
type AliasStaticFnStruct = AliasedStaticFnStruct;
type AliasConstEnum = AliasedConstEnum;
type AliasStaticFnEnum = AliasedStaticFnEnum;
macro_rules! impl_Const {($($T:ident),*) => {$(
impl Const for $T {
const C: () = ();
}
)*}}
macro_rules! impl_StaticFn {($($T:ident),*) => {$(
impl StaticFn for $T {
fn sfn() {}
}
)*}}
impl_Const!(ConstStruct, ConstEnum, AliasedConstStruct, AliasedConstEnum);
impl_StaticFn!(StaticFnStruct, StaticFnEnum, AliasedStaticFnStruct, AliasedStaticFnEnum);
fn main() {
let _ = ConstStruct::C;
let _ = ConstEnum::C;
StaticFnStruct::sfn();
StaticFnEnum::sfn();
let _ = AliasConstStruct::C;
let _ = AliasConstEnum::C;
AliasStaticFnStruct::sfn();
AliasStaticFnEnum::sfn();
}