File: rfc-reject-double-move-across-arms.rs

package info (click to toggle)
rustc-web 1.70.0%2Bdfsg1-7~deb11u1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 1,517,036 kB
  • sloc: xml: 147,962; javascript: 10,210; sh: 8,590; python: 8,220; ansic: 5,901; cpp: 4,635; makefile: 4,006; asm: 2,856
file content (24 lines) | stat: -rw-r--r-- 594 bytes parent folder | download | duplicates (19)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
#![feature(if_let_guard)]

enum VecWrapper { A(Vec<i32>) }

fn if_guard(x: VecWrapper) -> usize {
    match x {
        VecWrapper::A(v) if { drop(v); false } => 1,
        //~^ ERROR cannot move out of `v` in pattern guard
        VecWrapper::A(v) => v.len()
    }
}

fn if_let_guard(x: VecWrapper) -> usize {
    match x {
        VecWrapper::A(v) if let Some(()) = { drop(v); None } => 1,
        //~^ ERROR cannot move out of `v` in pattern guard
        VecWrapper::A(v) => v.len()
    }
}

fn main() {
    if_guard(VecWrapper::A(vec![107]));
    if_let_guard(VecWrapper::A(vec![107]));
}