Hi Tom- What does the implementation of this method look like?
[ENSScrollView viewContentFrameDidChange:] This error: Exception Type: EXC_BAD_ACCESS (SIGSEGV) Exception Codes: KERN_INVALID_ADDRESS at 0x0000000000000000 ... makes me think that something is nil that is not supposed to be, according to your code. Since you can't reproduce it, you could trawl through the method and see if any calls would not tolerate an unexpected nil. Total guesswork on my part, but is anything in the modal window's view hierarchy coming out of a nib, and potentially not wired up yet (i.e. crash before awakeFromNib called)? It does look like the stack trace makes it through Apple's code and back to yours... John On Jun 10, 2014, at 4:42 PM, Tom Doan <t...@estima.com> wrote: > I have a user of one of my software programs who has been having all kinds of > problems which I can't seem to reproduce, and have no idea how to even debug > them. > I include below a traceback that he sent me. This is something that occurs > almost right > away: launch the program, do File-New, and it is in the process of running a > modal > dialog which includes an NSScrollView. I have an observer on > viewContentFrameDidChange > and it's while processing that that it fails. > > So far as I can tell, it shouldn't be where it is. If I run it and set a > breakpoint on the observer, > it gets called in a completely different situation---the one that I intended. > I have no idea what > it's trying to do here. (What's an NSScrollerImp?) and no idea how to trap it > to figure out > what the problem is. Any help anyone can offer would be appreciated. > > Tom Doan > Estima > > > > > Process: WinTDOSX [359] > Path: /Applications/WinTD 4.20/WinTDOSX.app/Contents/MacOS/WinTDOSX > Identifier: com.estima.WinTD > Version: 4.20 (4.20) > Code Type: X86-64 (Native) > Parent Process: launchd [154] > Responsible: WinTDOSX [359] > User ID: 501 > Date/Time: 2014-06-10 15:34:56.670 -0400 > OS Version: Mac OS X 10.9.2 (13C1021) > Report Version: 11 > Anonymous UUID: 15F9A42A-3E8C-7B04-D878-7429EA0F52CF > Crashed Thread: 0 Dispatch queue: com.apple.main-thread > Exception Type: EXC_BAD_ACCESS (SIGSEGV) > Exception Codes: KERN_INVALID_ADDRESS at 0x0000000000000000 > VM Regions Near 0: > --> > __TEXT 0000000100000000-00000001002d3000 [ 2892K] r-x/rwx SM=COW > /Applications/WinTD > 4.20/WinTDOSX.app/Contents/MacOS/WinTDOSX > Application Specific Information: > Performing @selector(respond:) from sender NSMenuItem 0x6180000af7e0 > Thread 0 Crashed:: Dispatch queue: com.apple.main-thread > 0 com.estima.WinTD 0x00000001000feadb -[ENSScrollView > viewContentFrameDidChange:] + 76 > 1 com.apple.CoreFoundation 0x00007fff8cd2fe0c > __CFNOTIFICATIONCENTER_IS_CALLING_OUT_TO_AN_OBSERVER__ + > 12 > 2 com.apple.CoreFoundation 0x00007fff8cc238dd _CFXNotificationPost + 2893 > 3 com.apple.AppKit 0x00007fff874d8193 -[NSView _postFrameChangeNotification] > + 434 > 4 com.apple.AppKit 0x00007fff874e1852 -[NSView setFrameSize:] + 1586 > 5 com.apple.AppKit 0x00007fff8750a212 -[NSClipView setFrameSize:] + 380 > 6 com.apple.AppKit 0x00007fff874e11d9 -[NSView setFrame:] + 294 > 7 com.apple.AppKit 0x00007fff8750d178 -[NSScrollView _setContentViewFrame:] + > 669 > 8 com.apple.AppKit 0x00007fff8750cacd -[NSScrollView > _applyContentAreaLayout:] + 131 > 9 com.apple.AppKit 0x00007fff8750b0a4 -[NSScrollView tile] + 1943 > 10 com.apple.AppKit 0x00007fff87dc0f3e +[NSScrollerImpPair > _updateAllScrollerImpPairsForNewRecommendedScrollerStyle:] > + 401 > 11 com.apple.CoreFoundation 0x00007fff8cd2fe0c > __CFNOTIFICATIONCENTER_IS_CALLING_OUT_TO_AN_OBSERVER__ > + 12 > 12 com.apple.CoreFoundation 0x00007fff8cc238dd _CFXNotificationPost + 2893 > 13 com.apple.Foundation 0x00007fff944d97ba -[NSNotificationCenter > postNotificationName:object:userInfo:] + 68 > 14 libdispatch.dylib 0x00007fff917cc1d7 _dispatch_call_block_and_release + 12 > 15 libdispatch.dylib 0x00007fff917c92ad _dispatch_client_callout + 8 > 16 libdispatch.dylib 0x00007fff917d0f03 _dispatch_main_queue_callback_4CF + > 333 > 17 com.apple.CoreFoundation 0x00007fff8ccc85a9 > __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ + 9 > 18 com.apple.CoreFoundation 0x00007fff8cc837c4 __CFRunLoopRun + 1636 > 19 com.apple.CoreFoundation 0x00007fff8cc82f25 CFRunLoopRunSpecific + 309 > 20 com.apple.HIToolbox 0x00007fff8d025a0d RunCurrentEventLoopInMode + 226 > 21 com.apple.HIToolbox 0x00007fff8d0257b7 ReceiveNextEventCommon + 479 > 22 com.apple.HIToolbox 0x00007fff8d0255bc > _BlockUntilNextEventMatchingListInModeWithFilter + 65 > 23 com.apple.AppKit 0x00007fff874aa3de _DPSNextEvent + 1434 > 24 com.apple.AppKit 0x00007fff874a9a2b -[NSApplication > nextEventMatchingMask:untilDate:inMode:dequeue:] + 122 > 25 com.apple.AppKit 0x00007fff87808e2e -[NSApplication > _realDoModalLoop:peek:] + 642 > 26 com.apple.AppKit 0x00007fff8780754e -[NSApplication runModalForWindow:] + > 117 > 27 com.estima.WinTD 0x00000001000f6758 EDialog::Process() + 88 > 28 com.estima.WinTD 0x000000010007c7e0 Tournament::DoNew() + 80 > 29 com.estima.WinTD 0x000000010007676d PairingsAppl::DoMenuCommand(long) + > 235 > 30 com.estima.WinTD 0x00000001001692b9 -[MenuHandler respond:] + 87 > 31 com.apple.AppKit 0x00007fff876c8340 -[NSApplication sendAction:to:from:] + > 327 > 32 com.apple.AppKit 0x00007fff876e32a8 -[NSMenuItem _corePerformAction] + 394 > 33 com.apple.AppKit 0x00007fff876e2fe4 -[NSCarbonMenuImpl > performActionWithHighlightingForItemAtIndex:] + 117 > 34 com.apple.AppKit 0x00007fff8773248d -[NSMenu > _internalPerformActionForItemAtIndex:] + 35 > 35 com.apple.AppKit 0x00007fff87732309 -[NSCarbonMenuImpl > _carbonCommandProcessEvent:handlerCallRef:] + 104 > 36 com.apple.AppKit 0x00007fff876d90d6 NSSLMMenuEventHandler + 716 > 37 com.apple.HIToolbox 0x00007fff8cfff1d4 > DispatchEventToHandlers(EventTargetRec*, OpaqueEventRef*, HandlerCallRec*) > + 892 > 38 com.apple.HIToolbox 0x00007fff8cffe787 > SendEventToEventTargetInternal(OpaqueEventRef*, OpaqueEventTargetRef*, > HandlerCallRec*) + 385 > 39 com.apple.HIToolbox 0x00007fff8d012880 SendEventToEventTarget + 40 > 40 com.apple.HIToolbox 0x00007fff8d048640 SendHICommandEvent(unsigned int, > HICommand const*, unsigned int, unsigned > int, unsigned char, void const*, OpaqueEventTargetRef*, > OpaqueEventTargetRef*, OpaqueEventRef**) + 420 > 41 com.apple.HIToolbox 0x00007fff8d07b238 > SendMenuCommandWithContextAndModifiers + 59 > 42 com.apple.HIToolbox 0x00007fff8d07b1e0 SendMenuItemSelectedEvent + 178 > 43 com.apple.HIToolbox 0x00007fff8d07b0bf FinishMenuSelection(SelectionData*, > MenuResult*, MenuResult*) + 94 > 44 com.apple.HIToolbox 0x00007fff8d083095 MenuSelectCore(MenuData*, Point, > double, unsigned int, OpaqueMenuRef**, > unsigned short*) + 718 > 45 com.apple.HIToolbox 0x00007fff8d082cc1 _HandleMenuSelection2 + 446 > 46 com.apple.AppKit 0x00007fff8764b73c _NSHandleCarbonMenuEvent + 284 > 47 com.apple.AppKit 0x00007fff874aa6be _DPSNextEvent + 2170 > 48 com.apple.AppKit 0x00007fff874a9a2b -[NSApplication > nextEventMatchingMask:untilDate:inMode:dequeue:] + 122 > 49 com.apple.AppKit 0x00007fff8749db2c -[NSApplication run] + 553 > 50 com.estima.WinTD 0x00000001000f4a22 EApplication::EventLoop() + 46 > 51 com.estima.WinTD 0x000000010007625c main + 1057 > 52 com.estima.WinTD 0x00000001000013c4 start + 52 > > _______________________________________________ > > 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 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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
