The search for Zombies (NSZombies)

Debugging (auto)release errors

It’s quite easy to release an object twice, causing Objective-C programs to crash somewhere else. Quite difficult to detect, therefore create the following .gdbinit file in your home folder:

fb -[NSException raise]
fb objc_exception_throw()
fb -[_NSZombie release]
fb szone_error

It will trigger the debugger with some very handy breakpoints. Now add a variable to the startup enviroment in Xcode. Double click on MacTrek under executables. Set the following var:

NSZombie=YES


Don’t forget to remove when ready, it’s quite a memory/performance hog.

‹ Building a bass guitar

Avoiding the 30 second tcp timeout on iPhone OS ›

Tagged with: Objective-C
Posted in Code