site_archiver@lists.apple.com Delivered-To: cocoa-dev@lists.apple.com Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mac.com; s=04042017; t=1543362765; bh=HEFU7saqw3ufjsrfoPa8Cd8Yn7rtbkNQLYDqPGcAYsw=; h=Content-type:MIME-version:Subject:From:Date:Message-id:To; b=LYnUejAy1B8qN0ysFm+IL++i+8qmw+wwnvLfnAd9xXxJ1bHfAym+cx4bmzYKiIK/R 3hU8TrA24tkMwqDm0Dele/EuJku0C2iJtqNRKo3uYbs3LvUSrV5377clWdqolb/FI2 vdqlK0Li8u64LHXM9/1YNFSuUxPmy1BkPrJmtm09qwVu6W4lZjDgrdaA0uo+vdDga2 k6Zs82GteAupMXx2Z4zRMXV3rvyTcwnLJKtwqaNWIUC9WJDxRTqaiPh5EGeHF/QUwR yaTVQPblGN/6T6OPqLrsX1jnit1296Toq4XlOH4mjgFI1siu757JNAWMX4h9ngOYVM btPw6z2GYNEog== Check out the Leaks tool in Instruments (inside Xcode.app) —Rob
On Nov 27, 2018, at 3:56 PM, Casey McDermott <support@turtlesoft.com> wrote:
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 _______________________________________________
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