blob: 567685950e9e4aaf7d77fbf0efc02123285fafe2 (
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
40
|
// run-pass
// The actual regression test from #63479. (Including this because my
// first draft at fn-ptr-is-structurally-matchable.rs failed to actually
// cover the case this hit; I've since expanded it accordingly, but the
// experience left me wary of leaving this regression test out.)
#![warn(pointer_structural_match)]
#[derive(Eq)]
struct A {
a: i64
}
impl PartialEq for A {
#[inline]
fn eq(&self, other: &Self) -> bool {
self.a.eq(&other.a)
}
}
type Fn = fn(&[A]);
fn my_fn(_args: &[A]) {
println!("hello world");
}
const TEST: Fn = my_fn;
struct B(Fn);
fn main() {
let s = B(my_fn);
match s {
B(TEST) => println!("matched"),
//~^ WARN pointers in patterns behave unpredictably
//~| WARN this was previously accepted by the compiler but is being phased out
_ => panic!("didn't match")
};
}
|
