Confused.m

    // Works
    __auto_type queue = dispatch_queue_create("com.pspdfkit.test", DISPATCH_QUEUE_SERIAL);
    dispatch_set_target_queue(queue, dispatch_get_global_queue(QOS_CLASS_DEFAULT, 0));

    // Crashes with EXC_BAD_INSTRUCTION
    // I guess this fails because the global queues already have an autorelease pool?
    __auto_type queue2 = dispatch_queue_create("com.pspdfkit.test", DISPATCH_QUEUE_SERIAL_WITH_AUTORELEASE_POOL);
    dispatch_set_target_queue(queue2, dispatch_get_global_queue(QOS_CLASS_DEFAULT, 0));