File: promote-ref-mut-in-let-issue-46557.rs

package info (click to toggle)
rustc 1.85.0%2Bdfsg3-1
  • links: PTS, VCS
  • area: main
  • in suites: experimental, forky, 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 (31 lines) | stat: -rw-r--r-- 626 bytes parent folder | download | duplicates (16)
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
// Test that we fail to promote the constant here which has a `ref
// mut` borrow.

fn gimme_static_mut_let() -> &'static mut u32 {
    let ref mut x = 1234543;
    x //~ ERROR
}

fn gimme_static_mut_let_nested() -> &'static mut u32 {
    let (ref mut x, ) = (1234543, );
    x //~ ERROR
}

fn gimme_static_mut_match() -> &'static mut u32 {
    match 1234543 { //~ ERROR
        ref mut x => x
    }
}

fn gimme_static_mut_match_nested() -> &'static mut u32 {
    match (123443,) { //~ ERROR
        (ref mut x,) => x,
    }
}

fn gimme_static_mut_ampersand() -> &'static mut u32 {
    &mut 1234543 //~ ERROR
}

fn main() {
}