On Oct 26, 2010, at 3:13 PM, Rick Mann wrote: > Hi. I've run into a bug, and I'm wondering if I'm expecting the wrong > behavior. If I do this: > > UIWindow* win = nil; // In reality, it's coming from somewhere else, but > it's nil > CGRect frame = win.bounds; > > Should I expect frame to be all zero? That's what I thought was the case, but > I'm getting nonsense values that are not zero.
No. The result is only zero if the primitive/structure size is a word or smaller. If it's larger, then the results are undefined. And CGRects contain four CGFloats, and CGFloats are 32-bit floats on iOS. So it's not a bug in the runtime. If you're running into the situation where a window can be nil, and you want to have a zeroed-out CGRect in that case, then do this: CGRect frame = (win ? win.bounds : CGRectZero); Nick Zitzmann <http://www.chronosnet.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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
