rust/tests/ui/borrowck/borrowck-vec-pattern-loan-from-mut.rs

fn a() {
    let mut v = vec![1, 2, 3];
    let vb: &mut [isize] = &mut v;
    match vb {
        &mut [_a, ref tail @ ..] => {
            v.push(tail[0] + tail[1]); //~ ERROR cannot borrow
        }
        _ => {}
    };
}

fn main() {}
Integrate vec patterns into borrow checker. The tail portion of the pattern effectively borrows a vector, but the borrow checker knew nothing about this. r=catamorphism 2013-01-25 03:33:48 +00:00			`fn a() {`
Changed most vec! invocations to use square braces Most of the Rust community agrees that the vec! macro is clearer when called using square brackets [] instead of regular brackets (). Most of these ocurrences are from before macros allowed using different types of brackets. There is one left unchanged in a pretty-print test, as the pretty printer still wants it to have regular brackets. 2016-10-29 21:54:04 +00:00			`let mut v = vec![1, 2, 3];`
cleanup: replace `as[_mut]_slice()` calls with deref coercions 2015-02-02 02:53:25 +00:00			`let vb: &mut [isize] = &mut v;`
librustc: Remove unique vector patterns from the language. Preparatory work for removing unique vectors from the language, which is itself preparatory work for dynamically sized types. 2014-02-13 17:46:46 +00:00			`match vb {`
Use new 'p @ ..' syntax in tests. 2019-07-07 23:47:46 +00:00			`&mut [_a, ref tail @ ..] => {`
new borrow checker (mass squash) 2013-03-15 19:24:24 +00:00			`v.push(tail[0] + tail[1]); //~ ERROR cannot borrow`
Integrate vec patterns into borrow checker. The tail portion of the pattern effectively borrows a vector, but the borrow checker knew nothing about this. r=catamorphism 2013-01-25 03:33:48 +00:00			`}`
			`_ => {}`
			`};`
			`}`

			`fn main() {}`