Sstalle\php7cc\NodeVisitor\FuncGetArgsVisitor::enterNode PHP Method

    public function enterNode(Node $node)
    {
        $isCurrentNodeFunctionLike = $node instanceof Node\FunctionLike;
        if ($isCurrentNodeFunctionLike || $this->argumentModificationStack->isEmpty() || !$this->argumentModificationStack->top() || !$this->functionAnalyzer->isFunctionCallByStaticName($node, array_flip(array('func_get_arg', 'func_get_args')))) {
            $isCurrentNodeFunctionLike && $this->argumentModificationStack->push(false);
            return;
        }
        /** @var Node\Expr\FuncCall $node */
        $functionName = $node->name->toString();
        $this->addContextMessage(sprintf('Function argument(s) returned by "%s" might have been modified', $functionName), $node);
    }