mirror of
https://github.com/rust-lang/rust
synced 2024-10-01 14:25:08 +00:00
27 lines
548 B
Rust
27 lines
548 B
Rust
// run-pass
|
|
|
|
// Test argument patterns where we create refs to the inside of
|
|
// boxes. Make sure that we don't free the box as we match the
|
|
// pattern.
|
|
|
|
#![feature(box_patterns)]
|
|
|
|
fn getaddr(box ref x: Box<usize>) -> *const usize {
|
|
let addr: *const usize = &*x;
|
|
addr
|
|
}
|
|
|
|
fn checkval(box ref x: Box<usize>) -> usize {
|
|
*x
|
|
}
|
|
|
|
pub fn main() {
|
|
let obj: Box<_> = Box::new(1);
|
|
let objptr: *const usize = &*obj;
|
|
let xptr = getaddr(obj);
|
|
assert_eq!(objptr, xptr);
|
|
|
|
let obj = Box::new(22);
|
|
assert_eq!(checkval(obj), 22);
|
|
}
|