--TEST--
"block" function without arguments
--TEMPLATE--
{% extends 'base.twig' %}
{% block bar %}BAR{% endblock %}
--TEMPLATE(base.twig)--
{% block foo %}{{ block() }}{% endblock %}
{% block bar %}BAR_BASE{% endblock %}
--DATA--
return []
--EXCEPTION--
Twig\Error\SyntaxError: Value for argument "name" is required for function "block" in "base.twig" at line 2.