Newbie issue trying to find zombies...

cocos2d for iPhone » Programming » Programming - Everything else

Newbie issue trying to find zombies...

(3 posts) (2 voices)

Started 2 years ago by Questor
Latest reply from Questor

Tags:

Questor
Member
Greetings,

I searched the net looking for a solid answer to this, but have not been able to find one. Apologies if this is a really newbie question.

Anyway, I was trying to turn on the necessary flags in order to have xcode (and iphone simulator) throw me an exception when/if I try to access a released object. (aka zombie flag). I set the necessary debug flag (fb -[_NSZombie release]) and also went into General Tab for my executable and selected "use debug suffixes". The program compiles fine, but when it is run it quickly dumps out the following error:
```
dyld: Symbol not found: __CFStringGetUserDefaultEncoding
  Referenced from: /System/Library/Frameworks/SystemConfiguration.framework/Versions/A/SystemConfiguration
  Expected in: /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator3.1.2.sdk/System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation
```
I am using Xcode v3.2.1 and it also happens in all three simulator versions. If I turn off the debug suffixes it runs fine, but I am under the assumption I need to set the debug suffixes in order to get this to throw the exception properly when an illegal access is made.

Any help would be greatly appreciated,
Q
Posted 2 years ago #
dbolli
Member

Steve O. posted this in http://www.cocos2d-iphone.org/forum/topic/3661

"This might be of interest:
http://www.codza.com/how-to-debug-exc_bad_access-on-iphone"

hth,
dbolli

Posted 2 years ago #
Questor
Member

dbolli,

Thanks for the info. I had already seen that article, but unlike another article I read it said nothing about debug-suffixes. So I took out the debug suffixes (which is what was causing the link error I was getting) and intentionally tried to create the "accessing a zombie" issue and it caught it correctly.

So it looks like the debug suffixes are not required to get the exception to work properly... Perhaps the article I was reading regarding this was out of date or not compatible with the current xcode/iphone simulator. Being new to iphone, etc, I am unsure what debug suffixes are really used for...(or why it produces a link error) but hopefully I won't need to turn them on in the future for anything.

Thanks again for the help.
Q

Posted 2 years ago #

RSS feed for this topic

Reply

You must log in to post.