eb678ff87f
instead of prefix `..`.
This breaks code that looked like:
match foo {
[ first, ..middle, last ] => { ... }
}
Change this code to:
match foo {
[ first, middle.., last ] => { ... }
}
RFC #55.
Closes #16967.
[breaking-change]
47 lines
1.3 KiB
Rust
47 lines
1.3 KiB
Rust
// 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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// Test that we do not permit moves from &[] matched by a vec pattern.
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extern crate debug;
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#[deriving(Clone)]
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struct Foo {
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string: String
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}
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pub fn main() {
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let x = vec!(
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Foo { string: "foo".to_string() },
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Foo { string: "bar".to_string() },
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Foo { string: "baz".to_string() }
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);
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let x: &[Foo] = x.as_slice();
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match x {
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[_, tail..] => {
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match tail {
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[Foo { string: a }, //~ ERROR cannot move out of dereference of `&`-pointer
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Foo { string: b }] => {
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//~^^ NOTE attempting to move value to here
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//~^^ NOTE and here
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}
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_ => {
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unreachable!();
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}
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}
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let z = tail[0].clone();
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println!("{:?}", z);
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}
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_ => {
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unreachable!();
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}
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}
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}
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