segfault.p6

# I think this is trying to write to the socket after closing/freeing it.
# connect with netcat or something: nc localhost 3005
react {
  whenever IO::Socket::Async.listen('localhost', 3005) -> $sock {
    start {
      $sock.print("thank you for subscribing to CAT FACTS\n");
      $sock.close;
    }
  }
}

changing the start block to this:

$sock.print('stuff');
sleep 1;
$sock.close;

prevents me from reproducing the segfault, and judging by the printf debugging I did in Moar, allows uv_write to complete in src/core/asyncsocket.c. In the failure case, handle_data->handle is NULL in the body of write_setup.