File: feature-gate.rs

package info (click to toggle)
rustc 1.85.0%2Bdfsg3-1
  • links: PTS, VCS
  • area: main
  • in suites: experimental, sid, trixie
  • size: 893,396 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; perl: 29; lisp: 29; ruby: 19; sql: 11
file content (29 lines) | stat: -rw-r--r-- 630 bytes parent folder | download | duplicates (11)
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
// gate-test-type_changing_struct_update

#[derive(Debug)]
struct Machine<S> {
    state: S,
    common_field1: &'static str,
    common_field2: i32,
}
#[derive(Debug)]
struct State1;
#[derive(Debug, PartialEq)]
struct State2;

fn update_to_state2() {
    let m1: Machine<State1> = Machine {
        state: State1,
        common_field1: "hello",
        common_field2: 2,
    };
    let m2: Machine<State2> = Machine {
        state: State2,
        ..m1
        //~^ ERROR type changing struct updating is experimental [E0658]
        //~| ERROR mismatched types [E0308]
    };
    assert_eq!(State2, m2.state);
}

fn main() {}