File: tls-try-with.rs

package info (click to toggle)
rustc-web 1.78.0%2Bdfsg1-2~deb12u3
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,245,420 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 (30 lines) | stat: -rw-r--r-- 568 bytes parent folder | download | duplicates (2)
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
//@ run-pass
#![allow(stable_features)]

//@ needs-threads

#![feature(thread_local_try_with)]

use std::thread;

static mut DROP_RUN: bool = false;

struct Foo;

thread_local!(static FOO: Foo = Foo {});

impl Drop for Foo {
    fn drop(&mut self) {
        assert!(FOO.try_with(|_| panic!("`try_with` closure run")).is_err());
        unsafe { DROP_RUN = true; }
    }
}

fn main() {
    thread::spawn(|| {
        assert_eq!(FOO.try_with(|_| {
            132
        }).expect("`try_with` failed"), 132);
    }).join().unwrap();
    assert!(unsafe { DROP_RUN });
}