File: borrowck-closures-mut-of-imm.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 (18 lines) | stat: -rw-r--r-- 407 bytes parent folder | download | duplicates (15)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
// Tests that two closures cannot simultaneously have mutable
// and immutable access to the variable. Issue #6801.

fn set(x: &mut isize) {
    *x = 4;
}

fn a(x: &isize) {
    let mut c1 = || set(&mut *x);
    //~^ ERROR cannot borrow
    let mut c2 = || set(&mut *x);
    //~^ ERROR cannot borrow
    //~| ERROR two closures require unique access to `x` at the same time
    c2(); c1();
}

fn main() {
}