File: type-check-4.rs

package info (click to toggle)
rustc-web 1.78.0%2Bdfsg1-2~deb11u3
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 1,245,360 kB
  • sloc: xml: 147,985; javascript: 18,022; sh: 11,083; python: 10,265; ansic: 6,172; cpp: 5,023; asm: 4,390; makefile: 4,269
file content (25 lines) | stat: -rw-r--r-- 546 bytes parent folder | download | duplicates (8) 
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
 
//@ needs-asm-support
//@ ignore-nvptx64
//@ ignore-spirv

use std::arch::asm;

fn main() {
    unsafe {
        // Can't output to borrowed values.

        let mut a = 0isize;
        let p = &a;
        asm!("{}", out(reg) a);
        //~^ cannot assign to `a` because it is borrowed
        println!("{}", p);

        // Can't read from mutable borrowed values.

        let mut a = 0isize;
        let p = &mut a;
        asm!("{}", in(reg) a);
        //~^ cannot use `a` because it was mutably borrowed
        println!("{}", p);
    }
}