File: issue-46589.rs

package info (click to toggle)
rustc 1.70.0%2Bdfsg1-9
  • links: PTS, VCS
  • area: main
  • in suites: forky, trixie
  • size: 722,120 kB
  • sloc: xml: 147,962; javascript: 10,210; sh: 8,590; python: 8,220; ansic: 5,901; cpp: 4,635; makefile: 4,001; asm: 2,856
file content (31 lines) | stat: -rw-r--r-- 769 bytes parent folder | download | duplicates (10)
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
// This tests passes in Polonius mode, so is skipped in the automated compare-mode.
// We will manually check it passes in Polonius tests, as we can't have a test here
// which conditionally passes depending on a test revision/compile-flags.

// ignore-compare-mode-polonius

struct Foo;

impl Foo {
    fn get_self(&mut self) -> Option<&mut Self> {
        Some(self)
    }

    fn new_self(&mut self) -> &mut Self {
        self
    }

    fn trigger_bug(&mut self) {
        let other = &mut (&mut *self);

        *other = match (*other).get_self() {
            Some(s) => s,
            None => (*other).new_self()
            //~^ ERROR cannot borrow `**other` as mutable more than once at a time [E0499]
        };

        let c = other;
    }
}

fn main() {}