# Wiki Code Tutorials

**URL:** <https://forums.unrealengine.com/t/wiki-code-tutorials/256>\
**Category:** C++\
**Tags:** unreal-engine\
**Created:** [March 20, 2014, 9:39pm UTC](https://forums.unrealengine.com/t/wiki-code-tutorials/256 "2014-03-20T21:39:34Z")\
**Posts on this page:** 1\
**Showing post:** 286

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**Author:** ![Rama](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/rama/32/882413_2.png) [@Rama](https://forums.unrealengine.com/u/Rama)\
**Post date:** [October 17, 2015, 5:21am UTC](https://forums.unrealengine.com/t/wiki-code-tutorials/256/286 "2015-10-17T05:21:03Z")

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How to Prevent Stale AActor\* Pointers in UE4

Dear Community,

If you are experiencing crashes due to stale AActor\* pointers, I have just the new wiki for you!

A stale pointer means the AActor\* returns true when you verify != nullptr, but then dereferencing still causes a crash.

Check out the solution here:

> **[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 — https://unrealcommunity.wiki/! You will be able to find content from...

🙂

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