looks like the FB lib is calling into a block - which you provide. Could it be that the block has gone out of scope and been garbage collected?
On Thu, Aug 16, 2012 at 12:43 AM, Michael Bayne <[email protected]> wrote: > I'm seeing a weird intermittent crash in the simulator after calling > GraphRequest() in the Facebook SDK. Has anyone seen anything like > this: > > Native stacktrace: > > 0 dictionopolis 0x0009f98c > mono_handle_native_sigsegv + 284 > 1 dictionopolis 0x00014d18 > mono_sigsegv_signal_handler + 248 > 2 libsystem_c.dylib 0x95f0e86b _sigtramp + 43 > 3 ??? 0xffffffff 0x0 + 4294967295 > 4 Foundation 0x00ab9b50 > ___NSURLConnectionDidReceiveResponse_block_invoke_0 + 79 > 5 Foundation 0x00ab7e84 > __65-[NSURLConnectionInternal > _withConnectionAndDelegate:onlyActive:]_block_invoke_0 + 40 > 6 Foundation 0x00ab8ea7 > -[NSURLConnectionInternalConnection invokeForDelegate:] + 39 > 7 Foundation 0x00ab7e3f > -[NSURLConnectionInternal _withConnectionAndDelegate:onlyActive:] + > 201 > 8 Foundation 0x00ab7fc5 > -[NSURLConnectionInternal _withActiveConnectionAndDelegate:] + 76 > 9 Foundation 0x009fc5bb > _NSURLConnectionDidReceiveResponse + 87 > 10 CFNetwork 0x003d4887 > _ZN19URLConnectionClient29_clientSendDidReceiveResponseEP14_CFURLResponsePNS_26ClientConnectionEventQueueE > + 57 > 11 CFNetwork 0x004a2710 > _ZN19URLConnectionClient26ClientConnectionEventQueue33processAllEventsAndConsumePayloadEP20XConnectionEventInfoI12XClientEvent18XClientEventParamsEl > + 962 > 12 CFNetwork 0x004a2861 > _ZN19URLConnectionClient26ClientConnectionEventQueue33processAllEventsAndConsumePayloadEP20XConnectionEventInfoI12XClientEvent18XClientEventParamsEl > + 1299 > 13 CFNetwork 0x003cc120 > _ZN19URLConnectionClient13processEventsEv + 174 > 14 CFNetwork 0x004a2117 > _ZThn52_N25URLConnectionInstanceData24multiplexerClientPerformEv + 21 > 15 CFNetwork 0x003cbfbf > _ZN17MultiplexerSource7performEv + 259 > 16 CoreFoundation 0x027e994f > __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 15 > 17 CoreFoundation 0x0274cb43 > __CFRunLoopDoSources0 + 243 > 18 CoreFoundation 0x0274c424 __CFRunLoopRun + > 1012 > 19 CoreFoundation 0x0274bd84 > CFRunLoopRunSpecific + 212 > 20 CoreFoundation 0x0274bc9b CFRunLoopRunInMode > + 123 > 21 GraphicsServices 0x041467d8 GSEventRunModal + > 190 > 22 GraphicsServices 0x0414688a GSEventRun + 103 > 23 UIKit 0x01541626 UIApplicationMain > + 1163 > 24 ??? 0x0eac6a05 0x0 + 246180357 > 25 ??? 0x0d1f1f50 0x0 + 220143440 > 26 ??? 0x0d1f1c48 0x0 + 220142664 > 27 ??? 0x0d1f1d9e 0x0 + 220143006 > 28 dictionopolis 0x00019082 > mono_jit_runtime_invoke + 722 > 29 dictionopolis 0x001791be > mono_runtime_invoke + 126 > 30 dictionopolis 0x0017d2a4 > mono_runtime_exec_main + 420 > 31 dictionopolis 0x00182655 > mono_runtime_run_main + 725 > 32 dictionopolis 0x00076285 mono_jit_exec + 149 > 33 dictionopolis 0x00011f45 main + 2837 > 34 dictionopolis 0x0000d371 start + 53 > > The non-native stack trace is equally unilluminating: > > Stacktrace: > > at (wrapper managed-to-native) > MonoTouch.UIKit.UIApplication.UIApplicationMain > (int,string[],intptr,intptr) <IL 0x0009f, 0xffffffff> > at MonoTouch.UIKit.UIApplication.Main (string[],string,string) > [0x00042] in > /Developer/MonoTouch/Source/monotouch/src/UIKit/UIApplication.cs:29 > at d11s.client.Application.Main (string[]) [0x00000] in > /Users/mdb/projects/ooo/dictionopolis/ios/Main.cs:168 > at (wrapper runtime-invoke) <Module>.runtime_invoke_void_object > (object,intptr,intptr,intptr) <IL 0x00050, 0xffffffff> > > I'm hoping not to have to sink a bunch of time into isolating a small > reproducible sample that fails, but if no one has seen a crash like > this, my alternatives are limited. > > -- [email protected] > _______________________________________________ > MonoTouch mailing list > [email protected] > http://lists.ximian.com/mailman/listinfo/monotouch -- Nic Wise t. +44 7788 592 806 | @fastchicken | http://www.linkedin.com/in/nicwise b. http://www.fastchicken.co.nz/ mobileAgent (for FreeAgent): get your accounts in your pocket. http://goo.gl/IuBU Trip Wallet: Keep track of your budget on the go: http://goo.gl/ePhKa Earnest: Self-employed? Track your business expenses and income. http://earnestapp.com Nearest Bus: find when the next bus is coming to your stop. http://goo.gl/Vcz1p London Bike App: Find the nearest Boris Bike, and get riding! http://goo.gl/Icp2 _______________________________________________ MonoTouch mailing list [email protected] http://lists.ximian.com/mailman/listinfo/monotouch
