On Wed, 04 Jan 2012 00:26:17 +0800, Roland King <[email protected]> said: >I have this line of code, just before a block is enqueued onto a dispatch >queue. weakSelf is used in that block. > > RKHIPCard __weak *weakSelf = self; > >which is generating the following error > > objc[15245]: cannot form weak reference to instance (0x89b4100) of > class RKHIPCard > >in certain very occasional circumstances. A bit of logging and it's clear that >those circumstances are when the RKHIPCard, self, is in the middle of being >deallocated.
Watch the WWDC 2011 video again; you're explicitly told that this is exactly why the weak-strong dance includes a nil test against the strong self inside the block. m. -- matt neuburg, phd = [email protected], <http://www.apeth.net/matt/> A fool + a tool + an autorelease pool = cool! Programming iOS 4! http://www.apeth.net/matt/default.html#iosbook_______________________________________________ Cocoa-dev mailing list ([email protected]) 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [email protected]
