Xcode 4.6.1 debugger local variables not available

Question

I recently upgraded Xcode 4.6 to 4.6.1, and I notice the following abnormal behaviour:

Sometimes, Local Variables are not available upon a breakpoint
Upon Step Into and Step Over when being suspended over a breakpoint, the editor highlights the incorrect line the code.

The LLVM 4.2 Compiler - COde Generation / Optimization level is set to None for Debug. I have tried cleaning the project, the simulator, etc. No luck.

Any clues?

score 5 · Accepted Answer · answered Mar 21 '13 at 12:25

5

The issue was that in my Run Configuration, I had chosen Release instead of Debug. Perhaps for Release, the compiler does some code optimisation, because of which, the compiled code and the source code get out of synch.

Attached is where I had made a mistake:

enter image description here

answered Mar 21 '13 at 12:25

Amarsh

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Great, worked for me. In my case, i was using a custom scheme called mock (uses mock data). Does anyone know if we can turn on debugging of local variables for build configurations other than Debug? – Robert Wagstaff May 02 '13 at 00:45

score 1 · Answer 2 · answered May 12 '17 at 14:29

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It may also happen if you enable options like address Sanitizer in "Scheme > RUN > Diagnostics"

answered May 12 '17 at 14:29

vtruant

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This is a correct answer. Tested on XCode 10.2.1 Wifi debug iPhoneX. – iDoc May 11 '19 at 06:27

Xcode 4.6.1 debugger local variables not available

2 Answers2