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use std::env;
use std::panic;
use std::process::Command;
use std::sync::atomic::{AtomicBool, Ordering::SeqCst};
use std::sync::Arc;
use std::thread;
const PANICS: usize = 100;
const THREADS: usize = 8;
const VAR: &str = "__THE_TEST_YOU_ARE_LUKE";
fn main() {
// These run in docker containers on CI where they can't re-exec the test,
// so just skip these for CI. No other reason this can't run on those
// platforms though.
// Miri does not have support for re-execing a file
if cfg!(unix)
&& (cfg!(target_arch = "arm")
|| cfg!(target_arch = "aarch64")
|| cfg!(target_arch = "s390x"))
|| cfg!(miri)
{
println!("test result: ok");
return;
}
if env::var(VAR).is_err() {
parent();
} else {
child();
}
}
fn parent() {
let me = env::current_exe().unwrap();
let result = Command::new(&me)
.env("RUST_BACKTRACE", "1")
.env(VAR, "1")
.output()
.unwrap();
if result.status.success() {
println!("test result: ok");
return;
}
println!("stdout:\n{}", String::from_utf8_lossy(&result.stdout));
println!("stderr:\n{}", String::from_utf8_lossy(&result.stderr));
println!("code: {}", result.status);
panic!();
}
fn child() {
let done = Arc::new(AtomicBool::new(false));
let done2 = done.clone();
let a = thread::spawn(move || {
while !done2.load(SeqCst) {
format!("{:?}", backtrace::Backtrace::new());
}
});
let threads = (0..THREADS)
.map(|_| {
thread::spawn(|| {
for _ in 0..PANICS {
assert!(panic::catch_unwind(|| {
panic!();
})
.is_err());
}
})
})
.collect::<Vec<_>>();
for thread in threads {
thread.join().unwrap();
}
done.store(true, SeqCst);
a.join().unwrap();
}
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