site_archiver@lists.apple.com Delivered-To: cocoa-dev@lists.apple.com Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s2048; t=1543359369; bh=ozxKwfrYJJFUWi6fYm8iuYcwwJW5836dsW3caVypBNs=; h=Date:From:Reply-To:To:Subject:References:From:Subject; b=Ihgn8TmHKnRZvqPKh3sxHX6YbFuw4KlK6R3f4S5Iv0V4MufFBbulf5uNinCWx57JFcahdqjbEqAqiEDM+NoN7HCwogagwNNtjtSbfiTL8lQqY+ZRjjET6rAGLhf8GRCY9qenWrRh+Lol4A7RDuj7z5qAgXrL7lObNTMuCq3HmNyzaIYtub29ETp8at2c3pqDj/QoicSsHA8Q4sVAWOv+gaEHlFuAqXedVxzmDPYNl3lNtzUa3lYlyZ2YWDumX3zRmp/NfTTKvgz5XnjfGP9lL8O66OLxQwWJhTGKXX3UE+cQLZb3XoKPBmyLViGNIVJKsjjqpdGgC+R7dwW0uEyx+A== Our main window has a tool bar across the top, an outline view on the left, and a tab view on the right. Choosing an item from the outline view fills a data entry screen into a new tab on the right. We started out using OS 10.11, but just switched to newer OS versions. 10.12 has a couple display quirks but runs OK. In 10.13 and newer, switching tabs often crashes. It gives a warning about releasing a data entry field that is already released. In C++, we would diagnose this with a breakpoint in the destructor and then check the stack trace. But with ARC, a breakpoint at dealloc just shows performDelayedCleanup and then main. No clues to what's wrong. Is there lore or are there tools for tracking object lifetimes in Obj-C/ARC? Anything that changed in 10.13 that might be biting us? Thanks, Casey McDermott TurtleSoft.com _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/site_archiver%40lists.appl... This email sent to site_archiver@lists.apple.com