# ABA problem

> multithreading computing anomaly when a thread reads a location twice with the same value, so that it looks like nothing has happened, but in fact another thread had changed the value and restored it

**Wikidata**: [Q275546](https://www.wikidata.org/wiki/Q275546)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/ABA_problem)  
**Source**: https://4ort.xyz/entity/aba-problem


## References

1. Freebase Data Dumps. 2013