> On Sep 20, 2016, at 2:47 PM, Sean McBride <s...@rogue-research.com> wrote: > > On Tue, 20 Sep 2016 14:26:27 -0700, David Duncan said: > >>> On Sep 20, 2016, at 1:21 PM, Sean McBride <s...@rogue-research.com> wrote: >>> >>> Hi all, >>> >>> WWDC 2016 Session 203 "What's New in Cocoa" at around 43:37 in the >>> video, says that if you link against the 10.11 SDK that NSTableView's >>> delegate is weak. So I went and wrapped my delegate nil-ing in: >>> >>> #if MAC_OS_X_VERSION_MAX_ALLOWED < 101100 >>> [tableView setDelegate:nil]; >>> [tableView setDataSource:nil]; >>> #endif >>> >>> yet (with NSZombie especially), I easily reproduce message-to-zombie >>> crashes with builds that are made against the Xcode 7.3.1 10.11 SDK. >> >> On which OS version? > > At runtime: 10.9.5, 10.10.5, and 10.11.6. > >> The macro above only says “do this if I link against an SDK prior to >> 10.11” – that doesn’t handle what happens at runtime when you are on >> 10.10 or below. In particular, if you plan to deploy back to prior to >> 10.11, then you would want to either do a runtime check, or for trivial >> code like this always run the code until your MIN_ALLOWED (deployment >> target) is >= 10.11. > > Yes, I'm aware of these differences. I'm also aware, as you surely are, that > sometimes behaviour depends (only) on what SDK you link against. > > If you scrub to around 43:37 here: > <https://developer.apple.com/videos/play/wwdc2016/203/> > > you'll see they specifically refer to "linked on 10.11". > > Besides, I both build and run on 10.11.6 and yet I see these > message-to-zombie crashes after removing the setDelegate:nil code.
Those crashes are expected. NSTableView's delegate is zeroing-weak when both of the following are true: * Your app was built with the 10.11 SDK or newer. * Your app is running on 10.12 or newer. The delegate is unsafe-unretained when running on 10.11 and earlier, no matter what SDK you built with. -- Greg Parker gpar...@apple.com <mailto:gpar...@apple.com> Runtime Wrangler _______________________________________________ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
