EXC_BAD_ACCESS issue debugging

Question

I sometimes get EXC_BAD_ACCESS without knowing the source.I enabled Zombies and this is now what I get on the console:

2018-08-27 18:37:41.785523+0530 MyProject[3419:1228271] *** -[MyProject.VideoLibrary retain]: message sent to deallocated instance 0x103078200

VideoLibrary is the name of controller and I am not sending any retain messages. How do I go further to identify the issue and fix it? I am using Swift 4.0 if that matters.

Have you disabled ARC? - Do you see any Zombies? If you type 'info malloc-history ' (0x103078200 in your example), what do you see? — Woodstock, Aug 27 '18 at 13:12
Run your app, wait for crash, and type into debugger 'info malloc-history ' where memLocation is the address of the Zombie. (https://code.tutsplus.com/tutorials/what-is-exc_bad_access-and-how-to-debug-it--cms-24544) — Woodstock, Aug 27 '18 at 13:22
crash is hard to reproduce, I will come back with questions as soon as I reproduce it again. — Deepak Sharma, Aug 27 '18 at 13:31

score 0 · Answer 1 · answered Aug 27 '18 at 13:34

When I want to have more information about a crash, I create an exception breakpoint.

You can add one from the breakpoint navigator by clicking on the "+".

When added, edit it and add po $arg1 for action. This will print information about the exception.

EXC_BAD_ACCESS issue debugging

1 Answers1