While using the DIC component outside of the Symfony I found I need to define my own base_class while calling PhpDumper::dump in order to provide custom functionality. Compiled container indeed contains my class as a parent, however constructor of the class is not called. The generated constructor looks like that:

    public function __construct()
    {
        $this->parameters = $this->getDefaultParameters();

        $this->services = $this->privates = array();
        $this->syntheticIds = array(
            //...
        );
        $this->methodMap = array(
            //...
        );
        $this->aliases = array(
            //...
        );
    }

I checked and this behavior is consistent across 4.0, 3.4 and 3.3 with or without as_files enabled. I guess then the decision was deliberate.

Is there any reason why not to call the base container constructor? WDYT about adding such option?