File: closure_cap_coerce_many_fail.rs

package info (click to toggle)
rustc-web 1.78.0%2Bdfsg1-2~deb12u3
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,245,420 kB
  • sloc: xml: 147,985; javascript: 18,022; sh: 11,083; python: 10,265; ansic: 6,172; cpp: 5,023; asm: 4,390; makefile: 4,269
file content (39 lines) | stat: -rw-r--r-- 1,131 bytes parent folder | download | duplicates (15)
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
fn add(a: i32, b: i32) -> i32 {
    a + b
}
fn main() {
    // We shouldn't coerce capturing closure to a function
    let cap = 0;
    let _ = match "+" {
        "+" => add,
        "-" => |a, b| (a - b + cap) as i32,
        _ => unimplemented!(),
    };
    //~^^^ ERROR `match` arms have incompatible types


    // We shouldn't coerce capturing closure to a non-capturing closure
    let _ = match "+" {
        "+" => |a, b| (a + b) as i32,
        "-" => |a, b| (a - b + cap) as i32,
        _ => unimplemented!(),
    };
    //~^^^ ERROR `match` arms have incompatible types


    // We shouldn't coerce non-capturing closure to a capturing closure
    let _ = match "+" {
        "+" => |a, b| (a + b + cap) as i32,
        "-" => |a, b| (a - b) as i32,
        _ => unimplemented!(),
    };
    //~^^^ ERROR `match` arms have incompatible types

    // We shouldn't coerce capturing closure to a capturing closure
    let _ = match "+" {
        "+" => |a, b| (a + b + cap) as i32,
        "-" => |a, b| (a - b + cap) as i32,
        _ => unimplemented!(),
    };
    //~^^^ ERROR `match` arms have incompatible types
}