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#![feature(box_patterns)]
#![feature(box_syntax)]
#![feature(slice_patterns)]
fn a() {
let mut vec = [box 1, box 2, box 3];
match vec {
[box ref _a, _, _] => {
//~^ borrow of `vec[..]` occurs here
vec[0] = box 4; //~ ERROR cannot assign
//~^ assignment to borrowed `vec[..]` occurs here
_a.use_ref();
}
}
}
fn b() {
let mut vec = vec![box 1, box 2, box 3];
let vec: &mut [Box<isize>] = &mut vec;
match vec {
&mut [ref _b..] => {
//~^ borrow of `vec[..]` occurs here
vec[0] = box 4; //~ ERROR cannot assign
//~^ assignment to borrowed `vec[..]` occurs here
_b.use_ref();
}
}
}
fn c() {
let mut vec = vec![box 1, box 2, box 3];
let vec: &mut [Box<isize>] = &mut vec;
match vec {
&mut [_a, //~ ERROR cannot move out
//~| cannot move out
//~| to prevent move
..
] => {
// Note: `_a` is *moved* here, but `b` is borrowing,
// hence illegal.
//
// See comment in middle/borrowck/gather_loans/mod.rs
// in the case covering these sorts of vectors.
}
_ => {}
}
let a = vec[0]; //~ ERROR cannot move out
//~| cannot move out of here
}
fn d() {
let mut vec = vec![box 1, box 2, box 3];
let vec: &mut [Box<isize>] = &mut vec;
match vec {
&mut [ //~ ERROR cannot move out
//~^ cannot move out
_b] => {}
_ => {}
}
let a = vec[0]; //~ ERROR cannot move out
//~| cannot move out of here
}
fn e() {
let mut vec = vec![box 1, box 2, box 3];
let vec: &mut [Box<isize>] = &mut vec;
match vec {
&mut [_a, _b, _c] => {} //~ ERROR cannot move out
//~| cannot move out
_ => {}
}
let a = vec[0]; //~ ERROR cannot move out
//~| cannot move out of here
}
fn main() {}
trait Fake { fn use_mut(&mut self) { } fn use_ref(&self) { } }
impl<T> Fake for T { }
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