summaryrefslogtreecommitdiffstats
path: root/tests/ui/borrowck/borrowck-match-binding-is-assignment.rs
blob: 064bf69ae79005b29427b1e3ea686dbe514b4c83 (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
41
// Test that immutable pattern bindings cannot be reassigned.

enum E {
    Foo(isize)
}

struct S {
    bar: isize,
}

pub fn main() {
    match 1 {
        x => {
            x += 1; //~ ERROR [E0384]
        }
    }

    match E::Foo(1) {
        E::Foo(x) => {
            x += 1; //~ ERROR [E0384]
        }
    }

    match (S { bar: 1 }) {
        S { bar: x } => {
            x += 1; //~ ERROR [E0384]
        }
    }

    match (1,) {
        (x,) => {
            x += 1; //~ ERROR [E0384]
        }
    }

    match [1,2,3] {
        [x,_,_] => {
            x += 1; //~ ERROR [E0384]
        }
    }
}