# \[CRASH\] access violation in FMallocTBB::Free

**URL:** <https://forums.unrealengine.com/t/crash-access-violation-in-fmalloctbb-free/364155>\
**Category:** Programming & Scripting\
**Tags:** unreal-engine\
**Created:** [July 15, 2016, 5:16pm UTC](https://forums.unrealengine.com/t/crash-access-violation-in-fmalloctbb-free/364155 "2016-07-15T17:16:07Z")\
**Posts on this page:** 1\
**Showing post:** 8

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**Author:** ![DannRees](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@DannRees](https://forums.unrealengine.com/u/DannRees)\
**Post date:** [July 26, 2016, 2:34pm UTC](https://forums.unrealengine.com/t/crash-access-violation-in-fmalloctbb-free/364155/8 "2016-07-26T14:34:12Z")

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Oh, I was under the impression that if the variable wasn’t marked with UPROPERTY it wouldn’t be GC’d by the engine? I’ve seen a few examples of using delete in the wiki (particularly the dynamic texture tutorial which I used).

How would I dispose of the data manually? the uint8\* is storing pixel data of a 2048 image and so I want to free up the memory when I no longer need it.

(example of using delete in wiki: [A new, community-hosted Unreal Engine Wiki - Announcements - Unreal Engine Forums](https://wiki.unrealengine.com/Procedural_Materials))

Additionally this Wiki says you can use new and delete

> **[A new, community-hosted Unreal Engine Wiki](https://forums.unrealengine.com/t/a-new-community-hosted-unreal-engine-wiki/141494)**
>
> After over a year in maintenance mode, the official Unreal Engine Wiki is now permanently offline. These resources now live on a new community-run Unreal Engine Community Wiki — ue4community.wiki! You will be able to find content from the official...

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