File: func-arg-incomplete-pattern.rs

package info (click to toggle)
rustc 1.85.0%2Bdfsg2-3
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 893,176 kB
  • sloc: xml: 158,127; python: 35,830; javascript: 19,497; cpp: 19,002; sh: 17,245; ansic: 13,127; asm: 4,376; makefile: 1,051; lisp: 29; perl: 29; ruby: 19; sql: 11
file content (22 lines) | stat: -rw-r--r-- 480 bytes parent folder | download | duplicates (6) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
 
//@ run-pass
#![allow(dead_code)]
// Test that we do not leak when the arg pattern must drop part of the
// argument (in this case, the `y` field).

struct Foo {
    x: Box<usize>,
    y: Box<usize>,
}

fn foo(Foo {x, ..}: Foo) -> *const usize {
    let addr: *const usize = &*x;
    addr
}

pub fn main() {
    let obj: Box<_> = Box::new(1);
    let objptr: *const usize = &*obj;
    let f = Foo { x: obj, y: Box::new(2) };
    let xptr = foo(f);
    assert_eq!(objptr, xptr);
}