Invalid cron expression causes memory overflow

[DKhalil]

The particular expression in our case was this:

$cron = new \Cron\CronExpression('0 0 - 2,5,8,11 ?');

Just creating a new CronExpression object will cause an endless loop and run out of memory at some point.

Tested with v3.3.2

[dragonmantank]

Can you let me know what PHP version and OS you are using? That cron expression should immediately bail out with:

InvalidArgumentException: Invalid CRON field value - at position 2

[DKhalil]

After trying it out now with 3.3.3 that is what happens, yes. Thanks!