summaryrefslogtreecommitdiffstats
path: root/src/test/ui/close-over-big-then-small-data.rs
blob: 429b21e8b8b99b73da84f9840146249a1d702e28 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
// run-pass

#![allow(dead_code)]
// If we use GEPi rather than GEP_tup_like when
// storing closure data (as we used to do), the u64 would
// overwrite the u16.

struct Pair<A,B> {
    a: A, b: B
}

struct Invoker<A> {
    a: A,
    b: u16,
}

trait Invokable<A> {
    fn f(&self) -> (A, u16);
}

impl<A:Clone> Invokable<A> for Invoker<A> {
    fn f(&self) -> (A, u16) {
        (self.a.clone(), self.b)
    }
}

fn f<A:Clone + 'static>(a: A, b: u16) -> Box<dyn Invokable<A>+'static> {
    Box::new(Invoker {
        a: a,
        b: b,
    }) as Box<dyn Invokable<A>+'static>
}

pub fn main() {
    let (a, b) = f(22_u64, 44u16).f();
    println!("a={} b={}", a, b);
    assert_eq!(a, 22u64);
    assert_eq!(b, 44u16);
}