App Crashes When Built with Xcode 3.2.5
App Crashes When Built with Xcode 3.2.5
- Subject: App Crashes When Built with Xcode 3.2.5
- From: Simon Wilson <email@hidden>
- Date: Mon, 17 Jan 2011 16:42:15 +0100
Our application is crashing with the following two functions at the top of the stack trace:
0 libobjc.A.dylib 0x93b01b19 _objc_fatal + 95
1 libobjc.A.dylib 0x93b05e49 objc_set_collection_threshold + 0
"objc_set_collection_threshold" would seem to be related to garbage collection, but we are building for garbage collection (the "Garbage Collection" build setting is set to the default: "Unsupported"), so it's strange that it should be calling _objc_fatal at this point.
The application only crashes on Mac OS X 10.5 Leopard. The crash does not occur on Snow Leopard.
But most interestingly (and the reason why I'm posting this here): the application only crashes when built with 3.2.5. The exact same code built with 3.2.1 does not crash.
Can anybody shed some light on why our application is crashing in objc_set_collection_threshold?
* Is this possibly related to garbage collection?
* How might Xcode 3.2.5 be building our application differently from 3.2.1?
* Did Apple change the default values of any build settings after 3.2.1?
We're building against the 10.5 SDK with Clang LLVM 1.0.
Any help would be greatly appreciated.
Many thanks,
Simon
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