iosafnetworking-2xcode7

'Project Name' was compiled with optimization - stepping may behave oddly; variables may not be available

Trying to step into AFNetworking code generates following warning:

[Project Name] was compiled with optimization - stepping may behave oddly; variables may not be available.

And of course I'm not able to debug the code. To be specific I'm trying to debug UIImageView+AFNetworking category which seems impossible. Changing the code has no effect (tried NSLog, etc) and when trying to step in compilers goes to assembly code and shows UIImageView+TVASTAFNetworking as category name which does not exist anywhere in the code base.

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Using Xcode 7. iOS 9 & 8. Cocoapods (no Framework)

UPDATE I forgot to mention that Optimizer is set to none for both release and debug configuration and I am in fact using Debug config.

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UPDATE 2

Strip Debug Symbols Is off as well.

Solution

  • It's been a long time but I finally solved the issue. There is a third optimization flag LTO or Link Time Optimization and Surprisingly no one have mentioned it here and for some reason I didn't pay attention to it either. It's right there above the Optimization Level setting as you can see in many screen shots posted here.

    So to summarize it there are 3 different optimization flags you want to turn off for debugging :

    enter image description here

    More information about LTO: http://llvm.org/docs/LinkTimeOptimization.html