PHP7 compatibility

[jglauche]

Hi,
I am running magento (very slightly fixed) in php7.

This problem arises when uploading images:

Uncaught Error: Function name must be a string in /var/www/shop/lib/Varien/File/Uploader.php:274

I thought it would be an easy fix by changing that line to
$params['object']->{$params['method']($this->_file['tmp_name'])};

But that would result in this error:

Uncaught Error: Call to undefined function validateUploadFile() in /var/www/shop/lib/Varien/File/Uploader.php:274

I believe it's looking at a wrong namespace. It wouldn't find it if I added a validateUploadFile function to that class.
I commented the line and it magically works.

Will there be a proper fix for that?

[ArturGoldyn]

That should rather be:
$params['object']->{$params['method']}($this->_file['tmp_name']);