On Fri, Apr 8, 2011 at 5:25 PM, Rick Mann <rm...@latencyzero.com> wrote: > Hi. In my garbage collection-required app, I'm trying to store a code block > (void (^)(void)) in a CFMutableDictionary. The docs says copy/retain/release > can be sent to a block, suggesting this can be done. But it's not working. > When I later retrieve the block and call it, I get an EXEC_BAD_ACCESS. > > This is when the block references an NSObject declared & allocated in the > block's enclosing scope. If I don't access that variable, it executes fine.
As explained in the Blocks Programming Guide, you should not allow blocks that reference stack storage to escape that scope. See "Patterns to Avoid": http://developer.apple.com/library/ios/#documentation/cocoa/Conceptual/Blocks/Articles/bxUsing.html --Kyle Sluder _______________________________________________ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
