5c717a6fc2
non-MIR translation is still not supported for these and will happily ICE. This is a [breaking-change] for many uses of slice_patterns.
40 lines
1.2 KiB
Rust
40 lines
1.2 KiB
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.
|
|
|
|
#![feature(slice_patterns)]
|
|
|
|
fn main() {
|
|
let x: Vec<(isize, isize)> = Vec::new();
|
|
let x: &[(isize, isize)] = &x;
|
|
match *x {
|
|
[a, (2, 3), _] => (),
|
|
[(1, 2), (2, 3), b] => (), //~ ERROR unreachable pattern
|
|
_ => ()
|
|
}
|
|
|
|
let x: Vec<String> = vec!["foo".to_string(),
|
|
"bar".to_string(),
|
|
"baz".to_string()];
|
|
let x: &[String] = &x;
|
|
match *x {
|
|
[a, _, _, ..] => { println!("{}", a); }
|
|
[_, _, _, _, _] => { } //~ ERROR unreachable pattern
|
|
_ => { }
|
|
}
|
|
|
|
let x: Vec<char> = vec!('a', 'b', 'c');
|
|
let x: &[char] = &x;
|
|
match *x {
|
|
['a', 'b', 'c', ref _tail..] => {}
|
|
['a', 'b', 'c'] => {} //~ ERROR unreachable pattern
|
|
_ => {}
|
|
}
|
|
}
|