Memory Exhausted

[transitguru]

@shaabans noted:

Many users are getting an error that looks just like this:

http://forge.prestashop.com/browse/PNM-2641

The "fix" at the bottom of that thread has been tested and works. We're still unable to consistently recreate the error. A scenario that causes this 100% of the time would be very helpful, we're working on this now!

@alex974 replied:

I registered an account because i have wait too much bug with this module and i wanted to report them to help
Regarding this error , like your link find out , the problem come from the setDiscount of the getTax method in Avalaratax.php.

The real problem has nothing to do with the memory,if you debug it , you realize very quickly that it's just an infinite loop . You are in Gettax() , here setdiscount call the following
$params['cart']->getOrderTotal(true, Cart::ONLY_DISCOUNTS)); And somehow after going to a lot and lot of code getOrderTotal do call Gettax() again.

Very shortly that give , gettax()->getOrderTotal()->gettax()->getOrderTotal->gettax() until yea you run out of memory eventually .

I will try to provide a scenario i do have some order that hit 100% this errors.

[richardbakerparis]

#3
Change to line 1135.
If cart doesn't exist, set discount to 0.00.

[transitguru]

The issue doesn't seem to be the problem of whether the cart exists, but when there is any sort of discount applied in Price Rules > Cart Rules. Set it to a 10% discount as a global rule and the memory leak occurs. This occurs wheter the patch above is applied or not. If the discount does not apply to the cart, the infinite loop would not occur. If it does, white screen and a nice message on your error log regarding memory overflow.