rust/tests/ui/borrowck/borrowck-vec-pattern-element-loan.rs
2023-01-11 09:32:08 +00:00

32 lines
803 B
Rust

fn a<'a>() -> &'a [isize] {
let vec = vec![1, 2, 3, 4];
let vec: &[isize] = &vec;
let tail = match vec {
&[_, ref tail @ ..] => tail,
_ => panic!("a")
};
tail //~ ERROR cannot return value referencing local variable `vec`
}
fn b<'a>() -> &'a [isize] {
let vec = vec![1, 2, 3, 4];
let vec: &[isize] = &vec;
let init = match vec {
&[ref init @ .., _] => init,
_ => panic!("b")
};
init //~ ERROR cannot return value referencing local variable `vec`
}
fn c<'a>() -> &'a [isize] {
let vec = vec![1, 2, 3, 4];
let vec: &[isize] = &vec;
let slice = match vec {
&[_, ref slice @ .., _] => slice,
_ => panic!("c")
};
slice //~ ERROR cannot return value referencing local variable `vec`
}
fn main() {}