With PHP 7.2 - Warning error on wp-includes/post-template.php

[jtibbles]

Following warning is displayed in code when viewing a single post, when using PHP7.2:

Warning
: count(): : count(): Parameter must be an array or an object that implements Countable in
/xxxx/wp-includes/post-template.php

Suggested patch ammend: replace line 284 in wp-includes/post-template.php:

if ( $page > count( $pages ) ) if the requested page doesn't exist

...with the following:

if ( empty($pages) === false && $page > count( $pages ) ) if the requested page doesn't exist

[pento]

Thank you for the bug report, @jtibbles! We're tracking this issue over on #42814.