rust/tests/ui/borrowck/borrowck-multiple-captures.rs
2023-01-11 09:32:08 +00:00

62 lines
1.3 KiB
Rust

use std::thread;
fn borrow<T>(_: &T) { }
fn different_vars_after_borrows() {
let x1: Box<_> = Box::new(1);
let p1 = &x1;
let x2: Box<_> = Box::new(2);
let p2 = &x2;
thread::spawn(move|| {
//~^ ERROR cannot move out of `x1` because it is borrowed
//~| ERROR cannot move out of `x2` because it is borrowed
drop(x1);
drop(x2);
});
borrow(&*p1);
borrow(&*p2);
}
fn different_vars_after_moves() {
let x1: Box<_> = Box::new(1);
drop(x1);
let x2: Box<_> = Box::new(2);
drop(x2);
thread::spawn(move|| {
//~^ ERROR use of moved value: `x1`
//~| ERROR use of moved value: `x2`
drop(x1);
drop(x2);
});
}
fn same_var_after_borrow() {
let x: Box<_> = Box::new(1);
let p = &x;
thread::spawn(move|| {
//~^ ERROR cannot move out of `x` because it is borrowed
drop(x);
drop(x); //~ ERROR use of moved value: `x`
});
borrow(&*p);
}
fn same_var_after_move() {
let x: Box<_> = Box::new(1);
drop(x);
thread::spawn(move|| {
//~^ ERROR use of moved value: `x`
drop(x);
drop(x); //~ ERROR use of moved value: `x`
});
}
fn main() {
different_vars_after_borrows();
different_vars_after_moves();
same_var_after_borrow();
same_var_after_move();
}