Open Radar

 
Summary:
MapKit is crashing.

This happens if the MKMapView is deallocated, before the TileOverlay has had a chance to respond from the URL.

Steps to Reproduce:
1. Add an MKTileOverlay which was initialized with a URL template to a MKMapView.
2. return the default renderer [[MKTileOverlayRenderer alloc] initWithTileOverlay:overlay] in the mapView's delegate method -[mapView:rendererForOverlay:] 
3. Navigate away from this ViewController in a way that will not keep it in memory (go back instead of to a next page)
4. Wait for the network request to finish
5. Inspect why it's crashing....

Expected Results:
MapKit to stop attempting to download information when it's no longer needed, as well as not returning that information to deallocated instances

Actual Results:
iPhone 5:
2014-06-01 05:17:39.934 Rex[2253:60b] *** -[VKRasterOverlayTileSource invalidateRect:level:]: message sent to deallocated instance 0x15823300
(lldb) po [NSThread callStackSymbols]
<_NSCallStackArray 0x1b8152c0>(
0   ???                                 0x01c62654 0x0 + 29763156,
1   MyApp                                 0x0013c2a9 main + 0,
2   CoreFoundation                      0x2ed38098 _CF_forwarding_prep_0 + 24,
3   VectorKit                           0x36ce915f <redacted> + 134,
4   MapKit                              0x2ffff403 <redacted> + 90,
5   MapKit                              0x30007699 <redacted> + 152,
6   MapKit                              0x30004b89 <redacted> + 112,
7   GeoServices                         0x33b0ae27 <redacted> + 54,
8   libdispatch.dylib                   0x39a66d53 <redacted> + 10,
9   libdispatch.dylib                   0x39a66d3f <redacted> + 22,
10  libdispatch.dylib                   0x39a696c3 _dispatch_main_queue_callback_4CF + 278,
11  CoreFoundation                      0x2edb1681 <redacted> + 8,
12  CoreFoundation                      0x2edaff4d <redacted> + 1308,
13  CoreFoundation                      0x2ed1a769 CFRunLoopRunSpecific + 524,
14  CoreFoundation                      0x2ed1a54b CFRunLoopRunInMode + 106,
15  GraphicsServices                    0x33c876d3 GSEventRunModal + 138,
16  UIKit                               0x31679891 UIApplicationMain + 1136,
17  MyApp                                 0x0013c31d main + 116,
18  libdyld.dylib                       0x39a7bab7 <redacted> + 2
)

Version:
iOS 7.1.1 (11D201)

Notes:
Simulator:
2014-06-01 04:44:10.209 Rex[14364:60b] *** -[VKRasterOverlayTileSource invalidateRect:level:]: message sent to deallocated instance 0xc7ea930
(lldb) po [NSThread callStackSymbols]
<_NSCallStackArray 0x14fad1a0>(
0   ???                                 0x144f74ed 0x0 + 340751597,
1   MyApp                                 0x00073ea0 main + 0,
2   CoreFoundation                      0x027250ee _CF_forwarding_prep_0 + 14,
3   VectorKit                           0x04aaedbd -[VKRasterOverlay setNeedsDisplayInRect:level:] + 157,
4   MapKit                              0x00999a8f -[MKOverlayRenderer setNeedsDisplayInMapRect:zoomScale:] + 111,
5   MapKit                              0x009a6b15 __50-[MKTileOverlayRenderer canDrawMapRect:zoomScale:]_block_invoke + 182,
6   MapKit                              0x009a3d70 __34-[MKTileOverlay _loadTile:result:]_block_invoke + 57,
7   GeoServices                         0x04e481d6 ___ZNK49-[GEOTileLoaderInternal _loadedTile:forKey:info:]66__49-[GEOTileLoaderInternal _loadedTile:forKey:info:]_block_invoke3$_1clERKN8LoadItem9RequesterE_block_invoke_2 + 85,
8   libdispatch.dylib                   0x02a7c7b8 _dispatch_call_block_and_release + 15,
9   libdispatch.dylib                   0x02a914d0 _dispatch_client_callout + 14,
10  libdispatch.dylib                   0x02a7f726 _dispatch_main_queue_callback_4CF + 340,
11  CoreFoundation                      0x0279a43e __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ + 14,
12  CoreFoundation                      0x026db5cb __CFRunLoopRun + 1963,
13  CoreFoundation                      0x026da9d3 CFRunLoopRunSpecific + 467,
14  CoreFoundation                      0x026da7eb CFRunLoopRunInMode + 123,
15  GraphicsServices                    0x0389f5ee GSEventRunModal + 192,
16  GraphicsServices                    0x0389f42b GSEventRun + 104,
17  UIKit                               0x015b9f9b UIApplicationMain + 1225,
18  MyApp                                 0x00073f2d main + 141,
19  libdyld.dylib                       0x02cc6701 start + 1
)

Configuration:
iPhone 5 using Network Link Conditioner with Edge profile