Playbot crashes when you shrug

[Manishearth]

Just say ¯\_(ツ)_/¯ in a channel with playbot in it.

Playbot will respect your apathy and leave/rejoin.

cc @alexcrichton

[Manishearth]

This is because my IRC client is sending the U+00AF MACRON as a one-byte bit of invalid unicode (instead of 0xC2AF)

[Manishearth]

Okay, this is really weird. It's a bug in the irc crate or the network stack, and only occurs when it has received a macron over the network.

The following code does it. It has to be run with logger. ./bin | logger -t playbot, followed by sending \xAF over IRC. I suspect the IO stack goes boom for some reason. Idk.

extern crate irc;


use std::default::Default;
use irc::client::prelude::*;

fn main() {
    let cfg = Config {
        nickname: Some(format!("irctest2")),
        server: Some(format!("irc.mozilla.org")),
        channels: Some(vec![format!("#testchan")]),
        .. Default::default()
    };
    let server = IrcServer::from_config(cfg).unwrap();
    server.identify().unwrap();
    let name = "playbot";
    for message in server.iter() {
            let message = message.unwrap();
            match message.command {
                Command::PRIVMSG(ref to, ref msg) => {
                        println!("received");
                }
                _ => ()
            }
    }
    println!("done");
}

cc @aatxe

[Manishearth]

I suspect rr can help here if you're on linux.

[aatxe]

Can you get a backtrace or something? It'd be interesting to see where this is actually a problem.

[Manishearth]

No, there is no backtrace. But you can reproduce it with the above minimal IRC bot.