Magento 2.1.x No support for PHP7.1

[BigL]

Preconditions

1. PHP 7.1.0RC6 (cli) ( NTS )
   2 . Magento CLI version 2.1.2

Steps to reproduce

1. ./bin/magento setup:upgrade
2. ./bin/magento setup:di:compile

Expected result

1. successful compiled DI

Actual result

1.Repositories code generation... 1/7 [====>-----------------------] 14% 1 sec 42.0 MiBPHP Fatal error: Cannot use 'Void' as class name as it is reserved in /data/vendor/magento/module-sales/Controller/Adminhtml/Order/Creditmemo/Void.php on line 10

This doesn't happen on PHP7.0

[maksek]

We are not supporting PHP 7.1 yet.

[cscd98]

@maksek When? :)

In order to compile I changed it to Voided. I know it broke something but I havent found it yet...
Cannot use 'Void' as class name as it is reserved in app/code/Magento/Sales/Controller/Adminhtml/Order/Creditmemo/Void.php on line 10
Cannot use 'Void' as class name as it is reserved in app/code/Magento/Sales/Controller/Adminhtml/Order/Invoice/Void.php on line 9

[dmitrii-fediuk]

My fix: https://example.com/t/2433
None of the Magento 2 functionality is broken.

[QWp6t]

PHP 5.6 officially no longer under active support.

Might be time to revisit this issue.