site_archiver@lists.apple.com Delivered-To: darwin-dev@lists.apple.com On Nov 4, 2007, at 6:12 PM, Jay Reynolds Freeman wrote: What I see is a failure in thread zero of my app -- that's the one where GUI I/O is done, always deep inside a display or displayIfNeeded of my main window. The actual crash is an EXC_BAD_ACCESS with code KERN_PROTECTION_FAILURE in a function called szone_free, in libSystem.B.dylib. -eric _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.appl... This usually indicates heap corruption of some kind, which then causes the malloc code (containing szone_free) to crash later. You should probably try standard approaches for tracking down heap corruption - MallocDebug, libgmalloc, etc. This email sent to site_archiver@lists.apple.com