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[NSThread callStackSymbols] weirdness
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[NSThread callStackSymbols] weirdness


  • Subject: [NSThread callStackSymbols] weirdness
  • From: Trygve Inda <email@hidden>
  • Date: Wed, 03 Feb 2016 23:28:55 -0800
  • Thread-topic: [NSThread callStackSymbols] weirdness

I am trying to track down a difficult bug on a customer's machine.

I have inserted [NSThread callStackSymbols] at a critical place in the app
where I want to see how it got there.

When running a debug version, either in the debugger or not, I see:

2/3/16 10:53:51.070 PM MyApp Core[22398]: (
    0   MyApp Core         -[MyClass dealloc] + 115
    1   MyApp Core         -[MyClass doSomething:] + 234
    2   MyApp Core         -[MyClass doStuff:] + 292
    3   CoreFoundation     __CFNOTIFICATIONCENTER_IS_CALLING_OUT + 12
    4   CoreFoundation     ___CFXRegistrationPost_block_invoke + 63


When running a release version, even with stripping turned off, I see:

2/3/16 10:57:33.978 PM MyApp Core[23142]: (
    0   MyApp Core        MyApp Core + 81817
    1   CoreFoundation    __CFNOTIFICATIONCENTER_IS_CALLING_OUT + 12
    2   CoreFoundation    ___CFXRegistrationPost_block_invoke + 63


My guess is that it is still being stripped somewhere, but why do I get to
see 3 method calls in my own app in the first example, but only the last
call in the second example?

Thanks,

Trygve



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