Xcode "step in" debugger problem

I have a problem when using step in a function - the debugger jumps in a header file that is not related with the implementation of that function. This is working as expected for other functions.. Did you have such problems before? What did you do to solve this? It's very weird.. I nev开发者_StackOverflower had such problem in Xcode before. I tried to disable compile for thumb option as I saw as a solution in other threads, but I still have the problem.

Thank you for any help!