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// Copyright 2012 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)]
enum t { a, b, }
fn main() {
let x = t::a;
match x { t::b => { } } //~ ERROR non-exhaustive patterns: `a` not covered
match true { //~ ERROR non-exhaustive patterns: `false` not covered
true => {}
}
match Some(10) { //~ ERROR non-exhaustive patterns: `Some(_)` not covered
None => {}
}
match (2, 3, 4) { //~ ERROR non-exhaustive patterns: `(_, _, _)` not covered
(_, _, 4) => {}
}
match (t::a, t::a) { //~ ERROR non-exhaustive patterns: `(a, a)` not covered
(t::a, t::b) => {}
(t::b, t::a) => {}
}
match t::a { //~ ERROR non-exhaustive patterns: `b` not covered
t::a => {}
}
// This is exhaustive, though the algorithm got it wrong at one point
match (t::a, t::b) {
(t::a, _) => {}
(_, t::a) => {}
(t::b, t::b) => {}
}
let vec = vec!(Some(42), None, Some(21));
let vec: &[Option<isize>] = &vec;
match *vec { //~ ERROR non-exhaustive patterns: `[]` not covered
[Some(..), None, ref tail..] => {}
[Some(..), Some(..), ref tail..] => {}
[None] => {}
}
let vec = vec!(1);
let vec: &[isize] = &vec;
match *vec {
[_, ref tail..] => (),
[] => ()
}
let vec = vec!(0.5f32);
let vec: &[f32] = &vec;
match *vec { //~ ERROR non-exhaustive patterns: `[_, _, _, _]` not covered
[0.1, 0.2, 0.3] => (),
[0.1, 0.2] => (),
[0.1] => (),
[] => ()
}
let vec = vec!(Some(42), None, Some(21));
let vec: &[Option<isize>] = &vec;
match *vec {
[Some(..), None, ref tail..] => {}
[Some(..), Some(..), ref tail..] => {}
[None, None, ref tail..] => {}
[None, Some(..), ref tail..] => {}
[Some(_)] => {}
[None] => {}
[] => {}
}
}
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