rust/src/test/run-pass/associated-const-range-match-patterns.rs
Sean Patrick Santos 6665758614 Fix issue where trait-associated consts could cause ICEs in match patterns.
This allows some lookup of trait-associated consts during type-checking,
which may be helpful for future fixes as well.
2015-05-17 15:30:32 -06:00

36 lines
896 B
Rust

// 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)]
struct Foo;
trait HasNum {
const NUM: isize;
}
impl HasNum for Foo {
const NUM: isize = 1;
}
fn main() {
assert!(match 2 {
Foo::NUM ... 3 => true,
_ => false,
});
assert!(match 0 {
-1 ... <Foo as HasNum>::NUM => true,
_ => false,
});
assert!(match 1 {
<Foo as HasNum>::NUM ... <Foo>::NUM => true,
_ => false,
});
}