If you include the uthash.h header file (v1.7) in an iPhone project the performance of the project will decrease in ~ 5 %.
It is noteworthy that you don't even need to create any hash table. By just including the header file, the performance decreases.
Steps to reproduce it:
1. Download cocos2d v0.8 ( http://www.cocos2d-iphone.org/download )
2. run the PerfomanceSpriteTest
3. Run Test...
2009-07-20 19:36:05 UTC in uthash