2014-02-05 16:33:10 -06:00
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// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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2012-12-08 14:22:43 -06:00
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fn a() -> &[int] {
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Fix incorrect non-exhaustive matching for fixed length vecs
Code like this is fixed now:
```
fn foo(p: [u8, ..4]) {
match p {
[a, b, c, d] => {}
};
}
```
Invalid constructors are not reported as errors yet:
```
fn foo(p: [u8, ..4]) {
match p {
[_, _, _] => {} // this should be error
[_, _, _, _, _, .._] => {} // and this
_ => {}
}
}
```
Issue #8311 is partially fixed by this commit. Fixed-length arrays in
let statement are not yet allowed:
```
let [a, b, c] = [1, 2, 3]; // still fails
```
2013-08-07 13:07:24 -05:00
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let vec = ~[1, 2, 3, 4];
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2013-03-15 14:24:24 -05:00
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let tail = match vec {
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[_, ..tail] => tail, //~ ERROR does not live long enough
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2013-10-21 15:08:31 -05:00
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_ => fail!("a")
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2012-12-08 14:22:43 -06:00
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};
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2013-02-15 04:44:18 -06:00
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tail
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2012-12-08 14:22:43 -06:00
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}
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2013-02-26 12:58:46 -06:00
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fn b() -> &[int] {
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Fix incorrect non-exhaustive matching for fixed length vecs
Code like this is fixed now:
```
fn foo(p: [u8, ..4]) {
match p {
[a, b, c, d] => {}
};
}
```
Invalid constructors are not reported as errors yet:
```
fn foo(p: [u8, ..4]) {
match p {
[_, _, _] => {} // this should be error
[_, _, _, _, _, .._] => {} // and this
_ => {}
}
}
```
Issue #8311 is partially fixed by this commit. Fixed-length arrays in
let statement are not yet allowed:
```
let [a, b, c] = [1, 2, 3]; // still fails
```
2013-08-07 13:07:24 -05:00
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let vec = ~[1, 2, 3, 4];
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2013-03-15 14:24:24 -05:00
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let init = match vec {
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[..init, _] => init, //~ ERROR does not live long enough
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2013-10-21 15:08:31 -05:00
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_ => fail!("b")
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2013-02-26 12:58:46 -06:00
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};
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init
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2012-12-08 14:22:43 -06:00
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}
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2013-02-26 12:58:46 -06:00
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fn c() -> &[int] {
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Fix incorrect non-exhaustive matching for fixed length vecs
Code like this is fixed now:
```
fn foo(p: [u8, ..4]) {
match p {
[a, b, c, d] => {}
};
}
```
Invalid constructors are not reported as errors yet:
```
fn foo(p: [u8, ..4]) {
match p {
[_, _, _] => {} // this should be error
[_, _, _, _, _, .._] => {} // and this
_ => {}
}
}
```
Issue #8311 is partially fixed by this commit. Fixed-length arrays in
let statement are not yet allowed:
```
let [a, b, c] = [1, 2, 3]; // still fails
```
2013-08-07 13:07:24 -05:00
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let vec = ~[1, 2, 3, 4];
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2013-03-15 14:24:24 -05:00
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let slice = match vec {
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[_, ..slice, _] => slice, //~ ERROR does not live long enough
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2013-10-21 15:08:31 -05:00
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_ => fail!("c")
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2013-02-26 12:58:46 -06:00
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};
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slice
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}
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fn main() {}
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