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// run-pass
#![allow(unused_must_use)]
#![feature(c_unwind)]
#![feature(panic_always_abort)]
// Since we mark some ABIs as "nounwind" to LLVM, we must make sure that
// we never unwind through them.
// ignore-emscripten no processes
// ignore-sgx no processes
use std::io;
use std::io::prelude::*;
use std::process::{exit, Command, Stdio};
use std::sync::{Arc, Barrier};
use std::thread;
use std::{env, panic};
extern "C" fn panic_in_ffi() {
panic!("Test");
}
fn should_have_aborted() {
io::stdout().write(b"This should never be printed.\n");
let _ = io::stdout().flush();
}
fn bomb_out_but_not_abort(msg: &str) {
eprintln!("bombing out: {}", msg);
exit(1);
}
fn test() {
let _ = panic::catch_unwind(|| {
panic_in_ffi();
});
should_have_aborted();
}
fn test_always_abort() {
panic::always_abort();
let _ = panic::catch_unwind(|| {
panic!();
});
should_have_aborted();
}
fn test_always_abort_thread() {
let barrier = Arc::new(Barrier::new(2));
let thr = {
let barrier = barrier.clone();
thread::spawn(move || {
barrier.wait();
panic!("in thread");
})
};
panic::always_abort();
barrier.wait();
let _ = thr.join();
bomb_out_but_not_abort("joined - but we were supposed to panic!");
}
fn main() {
let tests: &[(_, fn())] = &[
("test", test),
("test_always_abort", test_always_abort),
("test_always_abort_thread", test_always_abort_thread),
];
let args: Vec<String> = env::args().collect();
if args.len() > 1 {
// This is inside the self-executed command.
for (a, f) in tests {
if &args[1] == a {
return f();
}
}
bomb_out_but_not_abort("bad test");
}
let execute_self_expecting_abort = |arg| {
let mut p = Command::new(&args[0])
.stdout(Stdio::piped())
.stdin(Stdio::piped())
.arg(arg)
.spawn()
.unwrap();
let status = p.wait().unwrap();
assert!(!status.success());
// Any reasonable platform can distinguish a process which
// called exit(1) from one which panicked.
assert_ne!(status.code(), Some(1));
};
for (a, _f) in tests {
execute_self_expecting_abort(a);
}
}
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