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KVO/Bindings problem in 10.3 works in 10.4

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KVO/Bindings problem in 10.3 works in 10.4

Subject: KVO/Bindings problem in 10.3 works in 10.4
From: John Fox <email@hidden>
Date: Wed, 24 Aug 2005 18:40:55 -0700

Hello:

I'm seeing a crash in my app running under Panther (10.3) that I can't reproduce in Tiger (10.4). The crash consistently occurs when changing the value of a to-one relationship. I am using DataCrux (a wrapper around sqlite) and not CoreData.

Here's a back trace:

Thread 0 Crashed: 0 com.apple.CoreFoundation 0x901c0b0c CFRelease + 0x24 1 com.treehouseideas.DataCrux 0xc0015e1c unlockBtreeIfUnused + 0x64 (btree.c:1257) 2 com.apple.Foundation 0x90ac5b1c NSKVOPendingNotificationRelease + 0x4c 3 com.apple.CoreFoundation 0x901c43e4 __CFArrayReleaseValues + 0x214 4 com.apple.CoreFoundation 0x901c30a4 _CFArrayReplaceValues + 0x218 5 com.apple.CoreFoundation 0x901d8ca4 CFArrayRemoveValueAtIndex + 0xdc 6 com.apple.Foundation 0x90a366b8 -[NSObject (NSKeyValueObserverNotification) didChangeValueForKey:] + 0x258 7 com.apple.Foundation 0x90ac4b28 _NSSetObjectValueAndNotify + 0x6c

Has anyone else seen anything like this?

I'm using automatic notification, and I know that there's a lot of "behind the scenes" work that is done for you to make KVO work, so I'm kind of at a loss as to how to debug this. Plus, I suck at using GDB. Lame, I know.

Many thanks in advance.

John
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