# \[4.7.6\] TQueue Destructor Crash

**URL:** <https://forums.unrealengine.com/t/4-7-6-tqueue-destructor-crash/317199>\
**Category:** Programming & Scripting\
**Tags:** unreal-engine\
**Created:** [May 2, 2015, 10:49am UTC](https://forums.unrealengine.com/t/4-7-6-tqueue-destructor-crash/317199 "2015-05-02T10:49:17Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![anonymous\_user\_8e2766aa](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_8e2766aa](https://forums.unrealengine.com/u/anonymous_user_8e2766aa)\
**Post date:** [May 11, 2015, 7:29am UTC](https://forums.unrealengine.com/t/4-7-6-tqueue-destructor-crash/317199/4 "2015-05-11T07:29:37Z")

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Hello,

Please note that in terms of Garbage Collection, the only Unreal Engine 4 container that is safe to have UObject or UObject-derived pointers is TArray.  
Please also note that for proper functionality in this context every class member should be declared as UPROPERTY().

I would also suggest checking your components in terms of being registered/attached to Root.  
If you like to learn more about Garbage Collection in the Engine, please go here:

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Hope this helped!

Good luck!

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