rust/src/test/compile-fail/borrowck-vec-pattern-tail-element-loan.rs
Stepan Koltsov 828bfb2c61 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 22:07:24 +04:00

14 lines
267 B
Rust

fn a() -> &int {
let vec = ~[1, 2, 3, 4];
let tail = match vec {
[_a, ..tail] => &tail[0], //~ ERROR borrowed value does not live long enough
_ => fail!("foo")
};
tail
}
fn main() {
let fifth = a();
printfln!("%d", *fifth);
}