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1 | // Copyright 2012 The Rust Project Developers. See the COPYRIGHT |
2 | // file at the top-level directory of this distribution and at | |
3 | // http://rust-lang.org/COPYRIGHT. | |
4 | // | |
5 | // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or | |
6 | // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license | |
7 | // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your | |
8 | // option. This file may not be copied, modified, or distributed | |
9 | // except according to those terms. | |
10 | ||
11 | enum t { a, b, } | |
12 | ||
13 | fn main() { | |
1a4d82fc JJ |
14 | let x = t::a; |
15 | match x { t::b => { } } //~ ERROR non-exhaustive patterns: `a` not covered | |
16 | match true { //~ ERROR non-exhaustive patterns: `false` not covered | |
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17 | true => {} |
18 | } | |
1a4d82fc JJ |
19 | match Some(10is) { //~ ERROR non-exhaustive patterns: `Some(_)` not covered |
20 | None => {} | |
223e47cc | 21 | } |
1a4d82fc | 22 | match (2is, 3is, 4is) { //~ ERROR non-exhaustive patterns: `(_, _, _)` not covered |
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23 | (_, _, 4) => {} |
24 | } | |
1a4d82fc JJ |
25 | match (t::a, t::a) { //~ ERROR non-exhaustive patterns: `(a, a)` not covered |
26 | (t::a, t::b) => {} | |
27 | (t::b, t::a) => {} | |
223e47cc | 28 | } |
1a4d82fc JJ |
29 | match t::a { //~ ERROR non-exhaustive patterns: `b` not covered |
30 | t::a => {} | |
223e47cc LB |
31 | } |
32 | // This is exhaustive, though the algorithm got it wrong at one point | |
1a4d82fc JJ |
33 | match (t::a, t::b) { |
34 | (t::a, _) => {} | |
35 | (_, t::a) => {} | |
36 | (t::b, t::b) => {} | |
37 | } | |
38 | let vec = vec!(Some(42is), None, Some(21is)); | |
39 | let vec: &[Option<isize>] = vec.as_slice(); | |
40 | match vec { //~ ERROR non-exhaustive patterns: `[]` not covered | |
41 | [Some(..), None, tail..] => {} | |
42 | [Some(..), Some(..), tail..] => {} | |
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43 | [None] => {} |
44 | } | |
1a4d82fc JJ |
45 | let vec = vec!(1is); |
46 | let vec: &[isize] = vec.as_slice(); | |
47 | match vec { | |
48 | [_, tail..] => (), | |
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49 | [] => () |
50 | } | |
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51 | let vec = vec!(0.5f32); |
52 | let vec: &[f32] = vec.as_slice(); | |
53 | match vec { //~ ERROR non-exhaustive patterns: `[_, _, _, _]` not covered | |
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54 | [0.1, 0.2, 0.3] => (), |
55 | [0.1, 0.2] => (), | |
56 | [0.1] => (), | |
57 | [] => () | |
58 | } | |
1a4d82fc JJ |
59 | let vec = vec!(Some(42is), None, Some(21is)); |
60 | let vec: &[Option<isize>] = vec.as_slice(); | |
61 | match vec { | |
62 | [Some(..), None, tail..] => {} | |
63 | [Some(..), Some(..), tail..] => {} | |
64 | [None, None, tail..] => {} | |
65 | [None, Some(..), tail..] => {} | |
223e47cc LB |
66 | [Some(_)] => {} |
67 | [None] => {} | |
68 | [] => {} | |
69 | } | |
70 | } |