TYPO3.Flow

On line 370 there is a wrong check on the constructor arguments.
The current code doesn't allow a NULL value to be send to a class contructor.
The isset() check should be replaced by an array_key_exists check:

if ($objectConfiguration->getScope() === \TYPO3\FLOW3\Object\Configuration\Configuration::SCOPE_SINGLETON) {
                $code .= '        if (!array_key_exists(' . $index . ', $arguments)) throw new \TYPO3\FLOW3\Object\Exception\UnresolvedDependenciesException(\'Missing required constructor argument $' . $parameterName . ' in class \' . __CLASS__ . \'. ' . 'Please check your calling code and Dependency Injection configuration.\', 1296143787);' . "\n";
                //$code .= '        if (!isset($arguments[' . $index . '])) throw new \TYPO3\FLOW3\Object\Exception\UnresolvedDependenciesException(\'Missing required constructor argument $' . $parameterName . ' in class \' . __CLASS__ . \'. ' . 'Please check your calling code and Dependency Injection configuration.\', 1296143787);' . "\n";
            } else {
                $code .= '        if (!array_key_exists(' . $index . ', $arguments)) throw new \TYPO3\FLOW3\Object\Exception\UnresolvedDependenciesException(\'Missing required constructor argument $' . $parameterName . ' in class \' . __CLASS__ . \'. ' . 'Note that constructor injection is only support for objects of scope singleton (and this is not a singleton) – for other scopes you must pass each required argument to the constructor yourself.\', 1296143788);' . "\n";
                //$code .= '        if (!isset($arguments[' . $index . '])) throw new \TYPO3\FLOW3\Object\Exception\UnresolvedDependenciesException(\'Missing required constructor argument $' . $parameterName . ' in class \' . __CLASS__ . \'. ' . 'Note that constructor injection is only support for objects of scope singleton (and this is not a singleton) – for other scopes you must pass each required argument to the constructor yourself.\', 1296143788);' . "\n";
            }