CODEWITHSUNDEEP
objective-ciosuikitcrashcalayer
BBog
BBog

Reputation: 3650

Weird crash log related to CALayer

I encountered today a weird bug with an app I'm working on. The problem was with a catalog module. Above each page, there was a small black area, since the page didn't fill 100% the screen. Tapping on that zone would generate a crash.

My crash log looks something like this:

Exception Type:  EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_PROTECTION_FAILURE at 0x2fd00fec
Crashed Thread:  0

Thread 0 name:  Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0   QuartzCore                      0x35d812ac CA::Transaction::ensure_compat() + 0
1   QuartzCore                      0x35da2648 CALayerMapGeometry_(CALayer*, CALayer*, void (*)(void*, CA::Mat4<double> const&), void (*)(void*, CA::Mat4<double> const&), void*) + 28
2   QuartzCore                      0x35da25f8 -[CALayer convertPoint:fromLayer:] + 52
3   UIKit                           0x32457018 -[UIView(Geometry) convertPoint:fromView:] + 68
4   UIKit                           0x32456d40 -[UIView(Geometry) hitTest:withEvent:] + 172
5   UIKit                           0x32456d50 -[UIView(Geometry) hitTest:withEvent:] + 188
(...)repeat the line above^ until it reached 511
511 UIKit                           0x32456d50 -[UIView(Geometry) hitTest:withEvent:] + 188

Even more, xcode ends up crashing soon after. The debug navigator shows me something even more weird: http://i43.tinypic.com/5txnq0.png and then continued with a HUGE list of , like here: http://i41.tinypic.com/2h81ctw.png

I don't really know where to begin with... The catalog module is old and well tested, and something like this never happened before. I know there are many variables and things that might affect the app, but if anyone could shed even a tiny bit of light on this, I would be really grateful As I said, I don't even know how to start approaching this matter, it doesn't look like your regular "accessing a deallocated object", "memory leak" or other problems I encountered so far

Upvotes: 1

Views: 2223

Answers (1)

Joshua Weinberg
Joshua Weinberg

Reputation: 28688

You have an infinite recursion somewhere. Did you override -[UIView hitTest:withEvent:] somewhere? That would be a good place to start.

Upvotes: 10

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