Bug 56610 - SIGSEGV while executing native code in 32bit iOS device
Summary: SIGSEGV while executing native code in 32bit iOS device
Status: CONFIRMED
Alias: None
Product: iOS
Classification: Xamarin
Component: Mono runtime / AOT compiler (show other bugs)
Version: XI 10.12 (d15-3)
Hardware: Other Other
: --- normal
Target Milestone: Untriaged
Assignee: Zoltan Varga
URL:
Depends on:
Blocks:
 
Reported: 2017-05-18 12:06 UTC by Adrian Gallero
Modified: 2017-07-27 18:12 UTC (History)
7 users (show)

See Also:
Tags: ac
Is this bug a regression?: ---
Last known good build:


Attachments
Test case for reported bug (1.32 MB, application/zip)
2017-05-18 12:07 UTC, Adrian Gallero
Details
Build log with "-v -v -v -v" as requested (120.60 KB, text/plain)
2017-05-18 14:18 UTC, Adrian Gallero
Details
Symbolicated log as asked (41.96 KB, text/plain)
2017-06-19 20:03 UTC, Adrian Gallero
Details

Description Adrian Gallero 2017-05-18 12:06:09 UTC
The attached application fails with an error:
=================================================================
Got a SIGSEGV while executing native code. This usually indicates
a fatal error in the mono runtime or one of the native libraries 
used by your application.
=================================================================

When running in iOS 32 bit devices. The app works correctly in 64 bit devices and in the simulator.
I have particularly tested this on an iPhone 5, iOS10.3 32 bit, but I have reports from customers of it also crashing in iPads 32 bit.

I've tried it in the Stable VS2017 for mac, and also tried it in the Alpha Channel. Below is the information for the Alpha Channel tests:

=== Visual Studio Community 2017 for Mac (Preview) ===

Version 7.1 Preview (7.1 build 582)
Installation UUID: 4da5ad36-f614-46c9-a283-84b0733925db
Runtime:
	Mono 5.2.0.104 (2017-04/4a0006f) (64-bit)
	GTK+ 2.24.23 (Raleigh theme)

	Package version: 502000104

=== NuGet ===

Version: 4.0.0.2323

=== .NET Core ===

Runtime: /usr/local/share/dotnet/dotnet
SDK: /usr/local/share/dotnet/sdk/1.0.3/Sdks
MSBuild SDKs: /Library/Frameworks/Mono.framework/Versions/5.2.0/lib/mono/msbuild/15.0/bin/Sdks

=== Xamarin.Profiler ===

Version: 1.5.4
Location: /Applications/Xamarin Profiler.app/Contents/MacOS/Xamarin Profiler

=== Xamarin.Android ===

Version: 7.3.0.13 (Visual Studio Community)
Android SDK: /Users/adrian/Library/Developer/Xamarin/android-sdk-macosx
	Supported Android versions:
		2.3   (API level 10)
		4.0.3 (API level 15)
		4.4   (API level 19)
		6.0   (API level 23)

SDK Tools Version: 25.1.2
SDK Platform Tools Version: 24.0.0
SDK Build Tools Version: 23.0.2

Java SDK: /usr
java version "1.8.0_101"
Java(TM) SE Runtime Environment (build 1.8.0_101-b13)
Java HotSpot(TM) 64-Bit Server VM (build 25.101-b13, mixed mode)

Android Designer EPL code available here:
https://github.com/xamarin/AndroidDesigner.EPL

=== Xamarin Inspector ===

Version: 1.3.0-alpha1
Hash: 0855e01
Branch: master
Build date: Thu, 11 May 2017 04:16:13 GMT

=== Apple Developer Tools ===

Xcode 8.3.2 (12175)
Build 8E2002

=== Xamarin.iOS ===

Version: 10.11.0.126 (Visual Studio Community)
Hash: 7571635e
Branch: master
Build date: 2017-05-09 16:04:54-0400

=== Xamarin.Mac ===

Version: 3.5.0.126 (Visual Studio Community)

=== Build Information ===

Release ID: 701000582
Git revision: 9263c856af081fe1dbfa7bbf9f4856deedfda9d9
Build date: 2017-05-10 16:48:24-04
Xamarin addins: 42029256ac89ded8ed2211aa7bda09debaefab7b
Build lane: monodevelop-lion-d15-3-preview

=== Operating System ===

Mac OS X 10.12.5
Darwin 16.6.0 Darwin Kernel Version 16.6.0
    Fri Apr 14 16:21:16 PDT 2017
    root:xnu-3789.60.24~6/RELEASE_X86_64 x86_64


The logs I get are:
Launched application 'com.tmssoftware.com.testingread' on 'Adrian's iPhone' with pid 321
2017-05-16 09:12:20.956 testingread[321:63517] Xamarin.iOS: Successfully received USB connection from the IDE on port 54131, fd: 6
2017-05-16 09:12:20.957 testingread[321:63517] Xamarin.iOS: Processing: 'start profiler: no'
2017-05-16 09:12:20.958 testingread[321:63492] Xamarin.iOS: Profiler not loaded (disabled)
Loaded assembly: /private/var/containers/Bundle/Application/EC393EF9-149B-4915-AC57-5E8F5D69422B/testingread.app/Xamarin.iOS.dll [External]
Loaded assembly: /private/var/containers/Bundle/Application/EC393EF9-149B-4915-AC57-5E8F5D69422B/testingread.app/Mono.Security.dll [External]
Loaded assembly: /private/var/containers/Bundle/Application/EC393EF9-149B-4915-AC57-5E8F5D69422B/testingread.app/System.dll [External]
Loaded assembly: /private/var/containers/Bundle/Application/EC393EF9-149B-4915-AC57-5E8F5D69422B/testingread.app/System.Core.dll [External]
Loaded assembly: /private/var/containers/Bundle/Application/EC393EF9-149B-4915-AC57-5E8F5D69422B/testingread.app/System.Xml.dll [External]
Loaded assembly: /private/var/containers/Bundle/Application/EC393EF9-149B-4915-AC57-5E8F5D69422B/testingread.app/System.Numerics.dll [External]
Loaded assembly: /private/var/containers/Bundle/Application/EC393EF9-149B-4915-AC57-5E8F5D69422B/testingread.app/System.Data.dll [External]
Loaded assembly: /private/var/containers/Bundle/Application/EC393EF9-149B-4915-AC57-5E8F5D69422B/testingread.app/FlexCel.dll [External]
Loaded assembly: /private/var/containers/Bundle/Application/EC393EF9-149B-4915-AC57-5E8F5D69422B/testingread.app/testingread.exe
Thread started:  #2
2017-05-16 09:12:23.452 testingread[321:63492] critical: Stacktrace:

2017-05-16 09:12:23.452 testingread[321:63492] critical:   at <unknown> <0xffffffff>
2017-05-16 09:12:23.453 testingread[321:63492] critical:   at testingread.ViewController.UIButton3_TouchUpInside (UIKit.UIButton) [0x00011] in /Users/adrian/Projects/testingread/ViewController.cs:32
2017-05-16 09:12:23.455 testingread[321:63492] critical:   at (wrapper runtime-invoke) object.runtime_invoke_dynamic (intptr,intptr,intptr,intptr) [0x0001e] in <bfbf35b44b91472691c14776b3775a0b#B609507F-14A9-585A-41F6-45B24BF480B5>:0
2017-05-16 09:12:23.455 testingread[321:63492] critical:   at <unknown> <0xffffffff>
2017-05-16 09:12:23.457 testingread[321:63492] critical:   at (wrapper managed-to-native) UIKit.UIApplication.UIApplicationMain (int,string[],intptr,intptr) <0x0004f>
2017-05-16 09:12:23.458 testingread[321:63492] critical:   at UIKit.UIApplication.Main (string[],intptr,intptr) [0x00005] in /Users/builder/data/lanes/1381/7571635e/source/xamarin-macios/src/UIKit/UIApplication.cs:79
2017-05-16 09:12:23.459 testingread[321:63492] critical:   at UIKit.UIApplication.Main (string[],string,string) [0x00038] in /Users/builder/data/lanes/1381/7571635e/source/xamarin-macios/src/UIKit/UIApplication.cs:63
2017-05-16 09:12:23.459 testingread[321:63492] critical:   at testingread.Application.Main (string[]) [0x00000] in /Users/adrian/Projects/testingread/Main.cs:12
2017-05-16 09:12:23.460 testingread[321:63492] critical:   at (wrapper runtime-invoke) object.runtime_invoke_dynamic (intptr,intptr,intptr,intptr) [0x0001e] in <bfbf35b44b91472691c14776b3775a0b#B609507F-14A9-585A-41F6-45B24BF480B5>:0
2017-05-16 09:12:23.461 testingread[321:63492] critical: 
Native stacktrace:

2017-05-16 09:12:23.642 testingread[321:63492] critical: 	0   libmonosgen-2.0.dylib               0x0383718d mono_handle_native_crash + 224
2017-05-16 09:12:23.642 testingread[321:63492] critical: 	1   libmonosgen-2.0.dylib               0x0383ffc5 mono_sigsegv_signal_handler + 226
2017-05-16 09:12:23.643 testingread[321:63492] critical: 	2   libsystem_platform.dylib            0x1bdcc259 _sigtramp + 24
2017-05-16 09:12:23.643 testingread[321:63492] critical: 	3   libFlexCel.dll.dylib                0x01bd1778 FlexCel_XlsAdapter_XlsFile__cctor + 124
2017-05-16 09:12:23.644 testingread[321:63492] critical: 	4   libmscorlib.dll.dylib               0x004c7d1c wrapper_runtime_invoke_object_runtime_invoke_dynamic_intptr_intptr_intptr_intptr + 256
2017-05-16 09:12:23.644 testingread[321:63492] critical: 	5   libmonosgen-2.0.dylib               0x038437d3 mono_jit_runtime_invoke + 1614
2017-05-16 09:12:23.644 testingread[321:63492] critical: 	6   libmonosgen-2.0.dylib               0x038a02ab do_runtime_invoke + 78
2017-05-16 09:12:23.645 testingread[321:63492] critical: 	7   libmonosgen-2.0.dylib               0x0389ded1 mono_runtime_class_init_full + 808
2017-05-16 09:12:23.645 testingread[321:63492] critical: 	8   libmonosgen-2.0.dylib               0x0383f807 mono_jit_compile_method_with_opt + 424
2017-05-16 09:12:23.645 testingread[321:63492] critical: 	9   libmonosgen-2.0.dylib               0x03845341 common_call_trampoline + 842
2017-05-16 09:12:23.645 testingread[321:63492] critical: 	10  libmonosgen-2.0.dylib               0x03844fd9 mono_magic_trampoline + 68
2017-05-16 09:12:23.646 testingread[321:63492] critical: 	11  libmscorlib.dll.dylib               0x004f6d9c generic_trampoline_jit + 132
2017-05-16 09:12:23.646 testingread[321:63492] critical: 	12  libmscorlib.dll.dylib               0x004c7d1c wrapper_runtime_invoke_object_runtime_invoke_dynamic_intptr_intptr_intptr_intptr + 256
2017-05-16 09:12:23.646 testingread[321:63492] critical: 	13  libmonosgen-2.0.dylib               0x038437d3 mono_jit_runtime_invoke + 1614
2017-05-16 09:12:23.646 testingread[321:63492] critical: 	14  libmonosgen-2.0.dylib               0x038a02ab do_runtime_invoke + 78
2017-05-16 09:12:23.646 testingread[321:63492] critical: 	15  libmonosgen-2.0.dylib               0x038a0241 mono_runtime_invoke + 138
2017-05-16 09:12:23.647 testingread[321:63492] critical: 	16  testingread                         0x000747a1 _ZL30native_to_managed_trampoline_8P11objc_objectP13objc_selectorPP11_MonoMethodP8UIButtonj + 326
2017-05-16 09:12:23.647 testingread[321:63492] critical: 	17  testingread                         0x00074657 -[ViewController UIButton3_TouchUpInside:] + 46
2017-05-16 09:12:23.647 testingread[321:63492] critical: 	18  UIKit                               0x217ae805 <redacted> + 76
2017-05-16 09:12:23.647 testingread[321:63492] critical: 	19  UIKit                               0x217ae799 <redacted> + 62
2017-05-16 09:12:23.647 testingread[321:63492] critical: 	20  UIKit                               0x21798dc9 <redacted> + 478
2017-05-16 09:12:23.648 testingread[321:63492] critical: 	21  UIKit                               0x217ae0d5 <redacted> + 604
2017-05-16 09:12:23.648 testingread[321:63492] critical: 	22  UIKit                               0x217adc1f <redacted> + 2094
2017-05-16 09:12:23.648 testingread[321:63492] critical: 	23  UIKit                               0x217a8b5f <redacted> + 2798
2017-05-16 09:12:23.648 testingread[321:63492] critical: 	24  UIKit                               0x2177a703 <redacted> + 308
2017-05-16 09:12:23.648 testingread[321:63492] critical: 	25  UIKit                               0x21f0dd37 <redacted> + 2254
2017-05-16 09:12:23.648 testingread[321:63492] critical: 	26  UIKit                               0x21f086db <redacted> + 4186
2017-05-16 09:12:23.649 testingread[321:63492] critical: 	27  UIKit                               0x21f08abd <redacted> + 144
2017-05-16 09:12:23.649 testingread[321:63492] critical: 	28  CoreFoundation                      0x1c507fdd <redacted> + 12
2017-05-16 09:12:23.649 testingread[321:63492] critical: 	29  CoreFoundation                      0x1c507b05 <redacted> + 424
2017-05-16 09:12:23.650 testingread[321:63492] critical: 	30  CoreFoundation                      0x1c505f51 <redacted> + 1160
2017-05-16 09:12:23.650 testingread[321:63492] critical: 	31  CoreFoundation                      0x1c4590ef CFRunLoopRunSpecific + 470
2017-05-16 09:12:23.650 testingread[321:63492] critical: 	32  CoreFoundation                      0x1c458f11 CFRunLoopRunInMode + 104
2017-05-16 09:12:23.650 testingread[321:63492] critical: 	33  GraphicsServices                    0x1dc03b41 GSEventRunModal + 80
2017-05-16 09:12:23.651 testingread[321:63492] critical: 	34  UIKit                               0x217dde83 UIApplicationMain + 150
2017-05-16 09:12:23.651 testingread[321:63492] critical: 	35  libXamarin.iOS.dll.dylib            0x00a3cbec wrapper_managed_to_native_UIKit_UIApplication_UIApplicationMain_int_string___intptr_intptr + 288
2017-05-16 09:12:23.651 testingread[321:63492] critical: 	36  libXamarin.iOS.dll.dylib            0x009e46a0 UIKit_UIApplication_Main_string___intptr_intptr + 52
2017-05-16 09:12:23.651 testingread[321:63492] critical: 	37  libXamarin.iOS.dll.dylib            0x009e4660 UIKit_UIApplication_Main_string___string_string + 204
2017-05-16 09:12:23.651 testingread[321:63492] critical: 	38  libtestingread.exe.dylib            0x000902b4 testingread_Application_Main_string__ + 132
2017-05-16 09:12:23.652 testingread[321:63492] critical: 	39  libmscorlib.dll.dylib               0x004c7d1c wrapper_runtime_invoke_object_runtime_invoke_dynamic_intptr_intptr_intptr_intptr + 256
2017-05-16 09:12:23.652 testingread[321:63492] critical: 	40  libmonosgen-2.0.dylib               0x038437d3 mono_jit_runtime_invoke + 1614
2017-05-16 09:12:23.652 testingread[321:63492] critical: 	41  libmonosgen-2.0.dylib               0x038a02ab do_runtime_invoke + 78
2017-05-16 09:12:23.652 testingread[321:63492] critical: 	42  libmonosgen-2.0.dylib               0x038a26f5 do_exec_main_checked + 84
2017-05-16 09:12:23.653 testingread[321:63492] critical: 	43  libmonosgen-2.0.dylib               0x0382b64b mono_jit_exec + 194
2017-05-16 09:12:23.653 testingread[321:63492] critical: 	44  libxamarin-debug.dylib              0x03aef3d8 xamarin_main + 2420
2017-05-16 09:12:23.653 testingread[321:63492] critical: 	45  testingread                         0x000761db main + 102
2017-05-16 09:12:23.653 testingread[321:63492] critical: 	46  libdyld.dylib                       0x1bc464eb <redacted> + 2
2017-05-16 09:12:23.653 testingread[321:63492] critical: 
=================================================================
Got a SIGSEGV while executing native code. This usually indicates
a fatal error in the mono runtime or one of the native libraries 
used by your application.
=================================================================
Comment 1 Adrian Gallero 2017-05-18 12:07:36 UTC
Created attachment 22263 [details]
Test case for reported bug

Run the following code in a iOS 32bit device
Comment 2 Sebastien Pouliot 2017-05-18 13:08:32 UTC
I do not have the issue myself. I could be a duplication of #53872. I'll check with earlier builds.

Could you check if FlexCel.dll was build with csc ? (it's now on both Windows and macOS with mono 5.0). If that's the case make sure it's built with `/optimize+` (which is not enabled, by default, on debug builds).

If this is not the case then please attach the full build log (with "-v -v -v -v" in the "Additional mtouch arguments") so we can see if anything else differs between our build logs.
Comment 3 Adrian Gallero 2017-05-18 14:14:20 UTC
Hi,
Thanks for the fast answer. I don't seem to have access to bug 53872, it tells me I am not authorized so I can't check if it is similar.

This particular bug appeared after we released FlexCel 6.9 which added a ton of new classes, I guess it can be related to some of those, but I am not sure. FlexCel 6.8 does run fine in iOS 32 bit, but versions after that don't seem to.

This particular version of FlexCel was build in Windows using msbuild, and the csproj passed to the msbuild is below (I snipped the listing of files to make it shorter).

We don't ship a Debug build of FlexCel.dll, only a release dll, which is indeed compiled with optimization = true.

<?xml version="1.0" encoding="utf-8"?>
<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
  <PropertyGroup>
    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
    <ProjectTypeGuids>{FEACFBD2-3405-455C-9665-78FE426C6842};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
    <ProductVersion>10.0.0</ProductVersion>
    <SchemaVersion>2.0</SchemaVersion>
    <ProjectGuid>{52EFB471-B648-4339-8855-E690FB5C169D}</ProjectGuid>
    <OutputType>Library</OutputType>
    <RootNamespace>FlexCel</RootNamespace>
    <IPhoneResourcePrefix>Resources</IPhoneResourcePrefix>
    <AssemblyName>FlexCel</AssemblyName>
    <SignAssembly>true</SignAssembly>
    <AssemblyOriginatorKeyFile>..\src\Key\flexcel.snk</AssemblyOriginatorKeyFile>
  </PropertyGroup>
  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
    <DebugSymbols>true</DebugSymbols>
    <DebugType>full</DebugType>
    <Optimize>false</Optimize>
    <OutputPath>bin\Debug</OutputPath>
    <DefineConstants>DEBUG;MONO;MONOTOUCH;XAMUNIFIEDAPI;OSX;FRAMEWORK20;FRAMEWORK30;FRAMEWORK40;FRAMEWORK45</DefineConstants>
    <ErrorReport>prompt</ErrorReport>
    <WarningLevel>4</WarningLevel>
    <ConsolePause>false</ConsolePause>
  </PropertyGroup>
  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
    <Optimize>true</Optimize>
    <OutputPath>bin\Release</OutputPath>
    <ErrorReport>prompt</ErrorReport>
    <WarningLevel>4</WarningLevel>
    <ConsolePause>false</ConsolePause>
    <DefineConstants>RELEASE;MONO;MONOTOUCH;XAMUNIFIEDAPI;OSX;FRAMEWORK20;FRAMEWORK30;FRAMEWORK40;FRAMEWORK45</DefineConstants>
    <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
  </PropertyGroup>
  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Trial|AnyCPU' ">
    <Optimize>true</Optimize>
    <OutputPath>bin\Trial</OutputPath>
    <DefineConstants>TRIAL;MONO;MONOTOUCH;XAMUNIFIEDAPI;OSX;FRAMEWORK20;FRAMEWORK30;FRAMEWORK40;FRAMEWORK45</DefineConstants>
    <ErrorReport>prompt</ErrorReport>
    <WarningLevel>4</WarningLevel>
    <ConsolePause>false</ConsolePause>
  </PropertyGroup>
  <ItemGroup>
    <Reference Include="System" />
    <Reference Include="System.Xml" />
    <Reference Include="System.Core" />
    <Reference Include="Xamarin.iOS" />
    <Reference Include="System.Data" />
  </ItemGroup>
  <ItemGroup>
<snip of file listing>
  </ItemGroup>
  <Import Project="$(MSBuildExtensionsPath)\Xamarin\iOS\Xamarin.iOS.CSharp.targets" />
  <ItemGroup>
    <None Include="..\src\Render\FlexCelSVGExport.bmp">
      <Link>Render\FlexCelSVGExport.bmp</Link>
    </None>
  </ItemGroup>
</Project>



But the strange thing here is that at least here, the *test* project crashes in Debug but not in Release, using the same FlexCel.dll (compiled as release)

Just to make sure: On what deivce did you try it? I tried it on an iPhone 5, but I have reports from customers of similar crashes in other iOS32 devices, so that's why I assume it is related to 32 bit. But what I know for sure (because that's what I tested) is that it crashes in an iPhone 5 and and iPad4

Note that the crash is ONLY IN DEBUG MODE here, but I refer to Debug Mode for testignread.csproj. FlexCel.dll is the same in both cases (debug or release) but the app crashes when testingread is in debug mode. I have some customers complain in crashes also on release, but I can't confirm that myself.

If you want and you think it can help you, I can also provide you the full sources for FlexCel.dll, but this should have to be in a private attachment as it is not open source code.

About the full build log, are you referring to the build log of FlexCel.dll, or the build log of testcase.dproj?

If it is from testcase.dproj, I attach it below. If you want the one for FlexCel.dll let me know and I can paste it too (I suspect it will be big).

And please let me know any other information you think I can supply and that can be useful to help find the issue. I have it had already reported by 2 different customers, and I can reproduce it myself.

Ps:the build log seems to big to fit in the comment, I'll post it in a different comment
Comment 4 Adrian Gallero 2017-05-18 14:18:03 UTC
Created attachment 22268 [details]
Build log with "-v -v -v -v" as requested

This is the build log for the test case, not for FlexCel.dll
Comment 5 Sebastien Pouliot 2017-05-18 14:31:38 UTC
The linked issue is that (unlike the older `mcs`) the roslyn compiler (`csc`) emits quite different code when `/optimize+` is not set. 

That can affect the managed linker when it optimize ObjC bindings (it does not optimize normal user code). I assumed FlexCel.dll was such a binding but it does not seem to be the case (and you're shipping the 'optimized' version anyway).

So this looks like a different issue. I'm not sure why it did not fail in my case. I'll review the build logs to look for differences.

Right now it would be helpful if you could attach the symbolicated crash report (from the device, available from Xcode). This will tell us more than the original stack trace. Thanks!
Comment 6 Adrian Gallero 2017-05-18 15:41:22 UTC
Hi,
Indeed, FlexCel.dll is fully managed assembly written in C# (no calls to native stuff).

The crash log is as follows:

Incident Identifier: 7AEAC6CB-CBAD-4A3E-901A-70D7DBCDA3A4
CrashReporter Key:   986fc4f6ca28d89c1275c3779446a41a972cc7a7
Hardware Model:      iPhone5,2
Process:             testingread [326]
Path:                /private/var/containers/Bundle/Application/5727560D-DC39-4A4D-9BE2-7636E477BB7E/testingread.app/testingread
Identifier:          com.tmssoftware.com.testingread
Version:             1.0 (1.0)
Code Type:           ARM (Native)
Role:                Foreground
Parent Process:      launchd [1]
Coalition:           com.tmssoftware.com.testingread [429]


Date/Time:           2017-05-15 10:07:49.9943 -0300
Launch Time:         2017-05-15 10:07:44.0000 -0300
OS Version:          iPhone OS 10.3.1 (14E304)
Report Version:      104

Exception Type:  EXC_BAD_ACCESS (SIGABRT)
Exception Subtype: KERN_INVALID_ADDRESS at 0x5f6c6542
Triggered by Thread:  0

Application Specific Information:
abort() called

Filtered syslog:
None found

Thread 0 name:  tid_403  Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0   libsystem_kernel.dylib        	0x1b6a9acc __pthread_kill + 8
1   libsystem_pthread.dylib       	0x1b7620f6 pthread_kill + 62
2   libsystem_c.dylib             	0x1b63e95a abort + 108
3   libmonosgen-2.0.dylib         	0x038332c6 0x37f5000 + 254662
4   libmonosgen-2.0.dylib         	0x0383bfb4 0x37f5000 + 290740
5   libsystem_platform.dylib      	0x1b75c258 _sigtramp + 24
6   libFlexCel.dll.dylib          	0x01bd0e60 0x17bd000 + 4275808
7   libmscorlib.dll.dylib         	0x0047bb60 0x231000 + 2403168
8   libmonosgen-2.0.dylib         	0x0383f7c2 0x37f5000 + 305090
9   libmonosgen-2.0.dylib         	0x0389c29a 0x37f5000 + 684698
10  libmonosgen-2.0.dylib         	0x03899ec0 0x37f5000 + 675520
11  libmonosgen-2.0.dylib         	0x0383b7f6 0x37f5000 + 288758
12  libmonosgen-2.0.dylib         	0x03841330 0x37f5000 + 312112
13  libmonosgen-2.0.dylib         	0x03840fc8 0x37f5000 + 311240
14  libmscorlib.dll.dylib         	0x004aabd4 0x231000 + 2595796
15  libmscorlib.dll.dylib         	0x0047bb60 0x231000 + 2403168
16  libmonosgen-2.0.dylib         	0x0383f7c2 0x37f5000 + 305090
17  libmonosgen-2.0.dylib         	0x0389c29a 0x37f5000 + 684698
18  libmonosgen-2.0.dylib         	0x0389c230 0x37f5000 + 684592
19  testingread                   	0x00082798 0x7a000 + 34712
20  testingread                   	0x0008264e 0x7a000 + 34382
21  UIKit                         	0x2113e804 -[UIApplication sendAction:to:from:forEvent:] + 76
22  UIKit                         	0x2113e798 -[UIControl sendAction:to:forEvent:] + 62
23  UIKit                         	0x21128dc8 -[UIControl _sendActionsForEvents:withEvent:] + 478
24  UIKit                         	0x2113e0d4 -[UIControl touchesEnded:withEvent:] + 604
25  UIKit                         	0x2113dc1e -[UIWindow _sendTouchesForEvent:] + 2094
26  UIKit                         	0x21138b5e -[UIWindow sendEvent:] + 2798
27  UIKit                         	0x2110a702 -[UIApplication sendEvent:] + 308
28  UIKit                         	0x2189dd36 __dispatchPreprocessedEventFromEventQueue + 2254
29  UIKit                         	0x218986da __handleEventQueue + 4186
30  UIKit                         	0x21898abc __handleHIDEventFetcherDrain + 144
31  CoreFoundation                	0x1be97fdc __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 12
32  CoreFoundation                	0x1be97b04 __CFRunLoopDoSources0 + 424
33  CoreFoundation                	0x1be95f50 __CFRunLoopRun + 1160
34  CoreFoundation                	0x1bde90ee CFRunLoopRunSpecific + 470
35  CoreFoundation                	0x1bde8f10 CFRunLoopRunInMode + 104
36  GraphicsServices              	0x1d593b40 GSEventRunModal + 80
37  UIKit                         	0x2116de82 UIApplicationMain + 150
38  libXamarin.iOS.dll.dylib      	0x009f0f84 0x981000 + 458628
39  libXamarin.iOS.dll.dylib      	0x009be6c0 0x981000 + 251584
40  libXamarin.iOS.dll.dylib      	0x009be680 0x981000 + 251520
41  libtestingread.exe.dylib      	0x0009f128 0x98000 + 28968
42  libmscorlib.dll.dylib         	0x0047bb60 0x231000 + 2403168
43  libmonosgen-2.0.dylib         	0x0383f7c2 0x37f5000 + 305090
44  libmonosgen-2.0.dylib         	0x0389c29a 0x37f5000 + 684698
45  libmonosgen-2.0.dylib         	0x0389e6e4 0x37f5000 + 693988
46  libmonosgen-2.0.dylib         	0x0382763a 0x37f5000 + 206394
47  libxamarin-debug.dylib        	0x03aeb410 0x3ab1000 + 238608
48  testingread                   	0x000841dc 0x7a000 + 41436
49  libdyld.dylib                 	0x1b5d64ea start + 2

Thread 1:
0   libsystem_pthread.dylib       	0x1b75e4c4 start_wqthread + 0

Thread 2:
0   libsystem_pthread.dylib       	0x1b75e4c4 start_wqthread + 0

Thread 3:
0   libsystem_pthread.dylib       	0x1b75e4c4 start_wqthread + 0

Thread 4:
0   libsystem_kernel.dylib        	0x1b6a9c10 __recvfrom + 20
1   libsystem_c.dylib             	0x1b5fa6bc recv + 18
2   libxamarin-debug.dylib        	0x03ae850c 0x3ab1000 + 226572
3   libxamarin-debug.dylib        	0x03ae886c 0x3ab1000 + 227436
4   libxamarin-debug.dylib        	0x03ae7084 0x3ab1000 + 221316
5   libxamarin-debug.dylib        	0x03ae66c0 0x3ab1000 + 218816
6   libxamarin-debug.dylib        	0x03ad8d24 0x3ab1000 + 163108
7   Foundation                    	0x1c8218aa __NSThread__start__ + 1122
8   libsystem_pthread.dylib       	0x1b7609aa _pthread_body + 216
9   libsystem_pthread.dylib       	0x1b7608cc _pthread_start + 234
10  libsystem_pthread.dylib       	0x1b75e4d8 thread_start + 8

Thread 5 name:  SGen worker
Thread 5:
0   libsystem_kernel.dylib        	0x1b6a9808 __psynch_cvwait + 24
1   libsystem_pthread.dylib       	0x1b75fcb2 _pthread_cond_wait + 560
2   libsystem_pthread.dylib       	0x1b761034 pthread_cond_wait + 38
3   libmonosgen-2.0.dylib         	0x03906ad4 0x37f5000 + 1120980
4   libsystem_pthread.dylib       	0x1b7609aa _pthread_body + 216
5   libsystem_pthread.dylib       	0x1b7608cc _pthread_start + 234
6   libsystem_pthread.dylib       	0x1b75e4d8 thread_start + 8

Thread 6 name:  Debugger agent
Thread 6:
0   libsystem_kernel.dylib        	0x1b6a9c10 __recvfrom + 20
1   libsystem_c.dylib             	0x1b5fa6bc recv + 18
2   libxamarin-debug.dylib        	0x03ae850c 0x3ab1000 + 226572
3   libxamarin-debug.dylib        	0x03ae8664 0x3ab1000 + 226916
4   libmonosgen-2.0.dylib         	0x03816114 0x37f5000 + 135444
5   libmonosgen-2.0.dylib         	0x03915550 0x37f5000 + 1181008
6   libsystem_pthread.dylib       	0x1b7609aa _pthread_body + 216
7   libsystem_pthread.dylib       	0x1b7608cc _pthread_start + 234
8   libsystem_pthread.dylib       	0x1b75e4d8 thread_start + 8

Thread 7 name:  Finalizer
Thread 7:
0   libsystem_kernel.dylib        	0x1b694950 semaphore_wait_trap + 8
1   libmonosgen-2.0.dylib         	0x0386b3c0 0x37f5000 + 484288
2   libmonosgen-2.0.dylib         	0x038c250a 0x37f5000 + 840970
3   libmonosgen-2.0.dylib         	0x03915550 0x37f5000 + 1181008
4   libsystem_pthread.dylib       	0x1b7609aa _pthread_body + 216
5   libsystem_pthread.dylib       	0x1b7608cc _pthread_start + 234
6   libsystem_pthread.dylib       	0x1b75e4d8 thread_start + 8

Thread 8 name:  com.apple.uikit.eventfetch-thread
Thread 8:
0   libsystem_kernel.dylib        	0x1b694900 mach_msg_trap + 20
1   libsystem_kernel.dylib        	0x1b6946e0 mach_msg + 44
2   CoreFoundation                	0x1be97be2 __CFRunLoopServiceMachPort + 144
3   CoreFoundation                	0x1be96064 __CFRunLoopRun + 1436
4   CoreFoundation                	0x1bde90ee CFRunLoopRunSpecific + 470
5   CoreFoundation                	0x1bde8f10 CFRunLoopRunInMode + 104
6   Foundation                    	0x1c73dab4 -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 258
7   Foundation                    	0x1c75a72c -[NSRunLoop(NSRunLoop) runUntilDate:] + 86
8   UIKit                         	0x21a6f888 -[UIEventFetcher threadMain] + 128
9   Foundation                    	0x1c8218aa __NSThread__start__ + 1122
10  libsystem_pthread.dylib       	0x1b7609aa _pthread_body + 216
11  libsystem_pthread.dylib       	0x1b7608cc _pthread_start + 234
12  libsystem_pthread.dylib       	0x1b75e4d8 thread_start + 8

Thread 9:
0   libsystem_kernel.dylib        	0x1b6aa73c __workq_kernreturn + 8
1   libsystem_pthread.dylib       	0x1b75e95a _pthread_wqthread + 1150
2   libsystem_pthread.dylib       	0x1b75e4cc start_wqthread + 8

Thread 0 crashed with ARM Thread State (32-bit):
    r0: 0x00000000    r1: 0x00000000      r2: 0x00000000      r3: 0x00000000
    r4: 0x00000006    r5: 0x39683e40      r6: 0x00000000      r7: 0x0022d328
    r8: 0x16aed400    r9: 0x39684744     r10: 0x16aed4bc     r11: 0x03923505
    ip: 0x00000148    sp: 0x0022d31c      lr: 0x1b7620f7      pc: 0x1b6a9acc
  cpsr: 0x00000010

Binary Images:
0x7a000 - 0x85fff testingread armv7  <6236da7b3bc4335d8435ba6f216fc40f> /var/containers/Bundle/Application/5727560D-DC39-4A4D-9BE2-7636E477BB7E/testingread.app/testingread
0x98000 - 0x9ffff libtestingread.exe.dylib armv7  <d3fa7027001f3337848c32600248f16b> /var/containers/Bundle/Application/5727560D-DC39-4A4D-9BE2-7636E477BB7E/testingread.app/libtestingread.exe.dylib
0xc5000 - 0xf0fff dyld armv7s  <92e1ea3abebc3bbcb7cb14fcc6a74f84> /usr/lib/dyld
0x231000 - 0x514fff libmscorlib.dll.dylib armv7  <c43973d7e900312b837ff0c13c115b43> /var/containers/Bundle/Application/5727560D-DC39-4A4D-9BE2-7636E477BB7E/testingread.app/libmscorlib.dll.dylib
0x981000 - 0xa18fff libXamarin.iOS.dll.dylib armv7  <b22c38cc402a30638fdd1eb6ce2fe356> /var/containers/Bundle/Application/5727560D-DC39-4A4D-9BE2-7636E477BB7E/testingread.app/libXamarin.iOS.dll.dylib
0xb2d000 - 0xc64fff libSystem.dll.dylib armv7  <b06ee401133d354baa5dd5ee81d079fc> /var/containers/Bundle/Application/5727560D-DC39-4A4D-9BE2-7636E477BB7E/testingread.app/libSystem.dll.dylib
0xe29000 - 0xe50fff libMono.Security.dll.dylib armv7  <456a8f77a6ca37e18ead178fe30f17b8> /var/containers/Bundle/Application/5727560D-DC39-4A4D-9BE2-7636E477BB7E/testingread.app/libMono.Security.dll.dylib
0xe85000 - 0x10d4fff libSystem.Xml.dll.dylib armv7  <4106adc3471830c681bd4eefb6ffc40e> /var/containers/Bundle/Application/5727560D-DC39-4A4D-9BE2-7636E477BB7E/testingread.app/libSystem.Xml.dll.dylib
0x13e1000 - 0x1510fff libSystem.Core.dll.dylib armv7  <0c48d11c7da2356282b2abbbf0c3faeb> /var/containers/Bundle/Application/5727560D-DC39-4A4D-9BE2-7636E477BB7E/testingread.app/libSystem.Core.dll.dylib
0x17bd000 - 0x2928fff libFlexCel.dll.dylib armv7  <2b38c024513c3b14887343e603411d2c> /var/containers/Bundle/Application/5727560D-DC39-4A4D-9BE2-7636E477BB7E/testingread.app/libFlexCel.dll.dylib
0x3499000 - 0x3600fff libSystem.Data.dll.dylib armv7  <fc9ff8a1b27b3e7da1be8c58fca6b25e> /var/containers/Bundle/Application/5727560D-DC39-4A4D-9BE2-7636E477BB7E/testingread.app/libSystem.Data.dll.dylib
0x37cd000 - 0x37dcfff libSystem.Numerics.dll.dylib armv7  <601cc6ac9e5b35f3bc5e549b31afb195> /var/containers/Bundle/Application/5727560D-DC39-4A4D-9BE2-7636E477BB7E/testingread.app/libSystem.Numerics.dll.dylib
0x37f5000 - 0x39a8fff libmonosgen-2.0.dylib armv7s  <8597d0f5b6c433f2b096f566d3240404> /var/containers/Bundle/Application/5727560D-DC39-4A4D-9BE2-7636E477BB7E/testingread.app/libmonosgen-2.0.dylib
0x3ab1000 - 0x3af0fff libxamarin-debug.dylib armv7s  <7bd84227e97533feb6b4f5e88a032a5e> /var/containers/Bundle/Application/5727560D-DC39-4A4D-9BE2-7636E477BB7E/testingread.app/libxamarin-debug.dylib
0x1b0f4000 - 0x1b0f5fff libSystem.B.dylib armv7s  <15e2e74692903fdf8b0d79f89ac646f0> /usr/lib/libSystem.B.dylib
0x1b0f6000 - 0x1b141fff libc++.1.dylib armv7s  <8d4659d41f053002ad009152e1483631> /usr/lib/libc++.1.dylib
0x1b142000 - 0x1b15bfff libc++abi.dylib armv7s  <2f0423677472387da05f4c9ebd7da5bc> /usr/lib/libc++abi.dylib
0x1b15c000 - 0x1b532fff libobjc.A.dylib armv7s  <add1c97cfbb73dbf9d7cffff3acf4afb> /usr/lib/libobjc.A.dylib
0x1b533000 - 0x1b537fff libcache.dylib armv7s  <a919c3327e8637db9f46a2eae72999c7> /usr/lib/system/libcache.dylib
0x1b538000 - 0x1b540fff libcommonCrypto.dylib armv7s  <cc20cdf0d5253621be678774aa596600> /usr/lib/system/libcommonCrypto.dylib
0x1b541000 - 0x1b549fff libcompiler_rt.dylib armv7s  <5d839f5093f0332db8916824d74d9258> /usr/lib/system/libcompiler_rt.dylib
0x1b54a000 - 0x1b550fff libcopyfile.dylib armv7s  <1fc38ebe78c33c43b3923626b1639110> /usr/lib/system/libcopyfile.dylib
0x1b551000 - 0x1b5a7fff libcorecrypto.dylib armv7s  <4b81eb17107d3a1ab42737464b04e736> /usr/lib/system/libcorecrypto.dylib
0x1b5a8000 - 0x1b5d2fff libdispatch.dylib armv7s  <90714434a72230618655803130565387> /usr/lib/system/libdispatch.dylib
0x1b5d3000 - 0x1b5d6fff libdyld.dylib armv7s  <9f2d090dc7b03840ac9e7e9e6688c334> /usr/lib/system/libdyld.dylib
0x1b5d7000 - 0x1b5d7fff libkeymgr.dylib armv7s  <230e20095c7e3d95a7d95d5268b7c26c> /usr/lib/system/libkeymgr.dylib
0x1b5d8000 - 0x1b5d8fff liblaunch.dylib armv7s  <3d83149e987c335a8730eec603eb13a6> /usr/lib/system/liblaunch.dylib
0x1b5d9000 - 0x1b5ddfff libmacho.dylib armv7s  <72521b207fe833a5bbffaa5810f0c05a> /usr/lib/system/libmacho.dylib
0x1b5de000 - 0x1b5dffff libremovefile.dylib armv7s  <bf4b063eaa583162a6173a2236fbe2cd> /usr/lib/system/libremovefile.dylib
0x1b5e0000 - 0x1b5f2fff libsystem_asl.dylib armv7s  <dd6e0cc432a53f22ba955632bbbd9e57> /usr/lib/system/libsystem_asl.dylib
0x1b5f3000 - 0x1b5f3fff libsystem_blocks.dylib armv7s  <553bfedb0fbd3f62a1d885edf34afd38> /usr/lib/system/libsystem_blocks.dylib
0x1b5f4000 - 0x1b654fff libsystem_c.dylib armv7s  <8ee242f80dd8396586f9da092a21010a> /usr/lib/system/libsystem_c.dylib
0x1b655000 - 0x1b658fff libsystem_configuration.dylib armv7s  <c79d589dbefc36bf98d8908864bccfb9> /usr/lib/system/libsystem_configuration.dylib
0x1b659000 - 0x1b65dfff libsystem_containermanager.dylib armv7s  <183b096d20293d17b1e092e4db506a2e> /usr/lib/system/libsystem_containermanager.dylib
0x1b65e000 - 0x1b65ffff libsystem_coreservices.dylib armv7s  <b93ad34399253da5b1391712d5378a55> /usr/lib/system/libsystem_coreservices.dylib
0x1b660000 - 0x1b672fff libsystem_coretls.dylib armv7s  <f333a39363d73cea8e292593c00ec9db> /usr/lib/system/libsystem_coretls.dylib
0x1b673000 - 0x1b678fff libsystem_dnssd.dylib armv7s  <aadb571457373fb2a11d880b75a83e22> /usr/lib/system/libsystem_dnssd.dylib
0x1b679000 - 0x1b693fff libsystem_info.dylib armv7s  <d8c4361f0f96312680a79500822f65cb> /usr/lib/system/libsystem_info.dylib
0x1b694000 - 0x1b6affff libsystem_kernel.dylib armv7s  <32676c8a0b3335d2922eb9f197988a29> /usr/lib/system/libsystem_kernel.dylib
0x1b6b0000 - 0x1b6dffff libsystem_m.dylib armv7s  <b178111c25573adba267797766d32cc5> /usr/lib/system/libsystem_m.dylib
0x1b6e0000 - 0x1b6f5fff libsystem_malloc.dylib armv7s  <34f61184a8bd3445990ce98b0653e118> /usr/lib/system/libsystem_malloc.dylib
0x1b6f6000 - 0x1b745fff libsystem_network.dylib armv7s  <798a6487b8f534aea90b42abb61997b4> /usr/lib/system/libsystem_network.dylib
0x1b746000 - 0x1b74efff libsystem_networkextension.dylib armv7s  <be314db1223132ddaa87c5fcf4cfefdf> /usr/lib/system/libsystem_networkextension.dylib
0x1b74f000 - 0x1b756fff libsystem_notify.dylib armv7s  <1461afc698123809baf870ca780fa7f9> /usr/lib/system/libsystem_notify.dylib
0x1b757000 - 0x1b75cfff libsystem_platform.dylib armv7s  <c9bc08ba8f693c028ac3ea663c05b6a9> /usr/lib/system/libsystem_platform.dylib
0x1b75d000 - 0x1b765fff libsystem_pthread.dylib armv7s  <caf7793531423229b33979620433527c> /usr/lib/system/libsystem_pthread.dylib
0x1b766000 - 0x1b768fff libsystem_sandbox.dylib armv7s  <5347183bdf903f478e4c9a353e899928> /usr/lib/system/libsystem_sandbox.dylib
0x1b769000 - 0x1b76ffff libsystem_symptoms.dylib armv7s  <d1ff27adf212332b848cfd8d64f7d0f6> /usr/lib/system/libsystem_symptoms.dylib
0x1b770000 - 0x1b780fff libsystem_trace.dylib armv7s  <e560b418651e3a6883df0134d5f9e5de> /usr/lib/system/libsystem_trace.dylib
0x1b781000 - 0x1b781fff libunwind.dylib armv7s  <59cfeed380583abdb439e9ed6ec8246a> /usr/lib/system/libunwind.dylib
0x1b782000 - 0x1b782fff libvminterpose.dylib armv7s  <b02efb4d5f13347482c13e341bbfad87> /usr/lib/system/libvminterpose.dylib
0x1b783000 - 0x1b7a1fff libxpc.dylib armv7s  <c6c0e402393235cfa247234e7e6c4514> /usr/lib/system/libxpc.dylib
0x1b7a2000 - 0x1b93cfff libicucore.A.dylib armv7s  <5fa08eea0d423872870a35de252d81b9> /usr/lib/libicucore.A.dylib
0x1b93d000 - 0x1b949fff libz.1.dylib armv7s  <30980f04fb7b3835acb6943f24fbc931> /usr/lib/libz.1.dylib
0x1bde1000 - 0x1c119fff CoreFoundation armv7s  <73c15f3d96643edcac080e9fe31a6dc8> /System/Library/Frameworks/CoreFoundation.framework/CoreFoundation
0x1c11a000 - 0x1c126fff libbsm.0.dylib armv7s  <a938100eb17735a1a0c78e410e6fa742> /usr/lib/libbsm.0.dylib
0x1c127000 - 0x1c127fff libenergytrace.dylib armv7s  <3a6944770bbe3ae8a7f102207172123f> /usr/lib/libenergytrace.dylib
0x1c128000 - 0x1c18bfff IOKit armv7s  <0d8cba418eca39d8aa6da1c2b2af294d> /System/Library/Frameworks/IOKit.framework/Versions/A/IOKit
0x1c18c000 - 0x1c1a8fff libMobileGestalt.dylib armv7s  <b60a82eafb46328fb9257f5873c69bb6> /usr/lib/libMobileGestalt.dylib
0x1c1a9000 - 0x1c25bfff libxml2.2.dylib armv7s  <b0b6d3444f63387fba9eeb62a4f14ce2> /usr/lib/libxml2.2.dylib
0x1c25c000 - 0x1c2d6fff Security armv7s  <e5ebeb7c13b73586b2e7ef1878bcf0e7> /System/Library/Frameworks/Security.framework/Security
0x1c2d7000 - 0x1c330fff SystemConfiguration armv7s  <fb81271ea21d3ec385dcda227a9a3df2> /System/Library/Frameworks/SystemConfiguration.framework/SystemConfiguration
0x1c331000 - 0x1c408fff libsqlite3.dylib armv7s  <741aa09d210430d08998d6390fc52d94> /usr/lib/libsqlite3.dylib
0x1c409000 - 0x1c6d6fff CFNetwork armv7s  <f65abd0a7ebf3042ba37c78bd252ef14> /System/Library/Frameworks/CFNetwork.framework/CFNetwork
0x1c6d7000 - 0x1c6e1fff libbz2.1.0.dylib armv7s  <c99a1a99c4253c7c806898be31232aa4> /usr/lib/libbz2.1.0.dylib
0x1c6e2000 - 0x1c6f7fff liblzma.5.dylib armv7s  <d9d297499fd038eda0a29d152fe74fd8> /usr/lib/liblzma.5.dylib
0x1c6f8000 - 0x1c70dfff libCRFSuite.dylib armv7s  <cec06ee00ee13999844e3c9416a66404> /usr/lib/libCRFSuite.dylib
0x1c70e000 - 0x1c72ffff libarchive.2.dylib armv7s  <9fb4506b488a31a395d1d426f52d7b57> /usr/lib/libarchive.2.dylib
0x1c730000 - 0x1c731fff liblangid.dylib armv7s  <35efcca238183e4ca70a5b49712b8c80> /usr/lib/liblangid.dylib
0x1c732000 - 0x1c9c1fff Foundation armv7s  <c040f90a04893a15b6ee3fe21fcefc9a> /System/Library/Frameworks/Foundation.framework/Foundation
0x1c9c2000 - 0x1caa2fff libBLAS.dylib armv7s  <becb8cd1b3c63d6690f28561202b75e3> /System/Library/Frameworks/Accelerate.framework/Frameworks/vecLib.framework/libBLAS.dylib
0x1caa3000 - 0x1cd69fff libLAPACK.dylib armv7s  <f0a469216807320b9f1d48c685f38cf4> /System/Library/Frameworks/Accelerate.framework/Frameworks/vecLib.framework/libLAPACK.dylib
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0x26206000 - 0x26464fff libAWDSupportFramework.dylib armv7s  <97ed287de97e3c3f9ed299318063f322> /usr/lib/libAWDSupportFramework.dylib
0x264a2000 - 0x264dcfff WirelessDiagnostics armv7s  <6c4bcc98e3ef3b16885a3c4302905479> /System/Library/PrivateFrameworks/WirelessDiagnostics.framework/WirelessDiagnostics
0x265d3000 - 0x26604fff AXRuntime armv7s  <cdc5733eae733a69a149f2b4245d1340> /System/Library/PrivateFrameworks/AXRuntime.framework/AXRuntime
0x266a6000 - 0x266affff AccessibilityUIUtilities armv7s  <267fc8bdd7093b9096af01a9892dccce> /System/Library/PrivateFrameworks/Accessibility.framework/Frameworks/AccessibilityUIUtilities.framework/AccessibilityUIUtilities
0x27260000 - 0x272ccfff libnetwork.dylib armv7s  <0f928d32a64f3e1e83a333d744c00737> /usr/lib/libnetwork.dylib
0x276da000 - 0x276dafff AdSupport armv7s  <14a736319d3f3c70bcd138ecac05f438> /System/Library/Frameworks/AdSupport.framework/AdSupport
0x27d53000 - 0x27db6fff WebInspector armv7s  <de0e985dce373de3b0db1e50c4f8d7cf> /System/Library/PrivateFrameworks/WebInspector.framework/WebInspector
0x27e72000 - 0x27f1ffff ITMLKit armv7s  <4d7b97a37f3d3005af8faa85b5246958> /System/Library/PrivateFrameworks/ITMLKit.framework/ITMLKit
0x29793000 - 0x2979afff AccessibilityUI armv7s  <b23604aeb1b7317d9306d08dc13812d0> /System/Library/PrivateFrameworks/Accessibility.framework/Frameworks/AccessibilityUI.framework/AccessibilityUI
0x29e85000 - 0x29eb1fff WirelessProximity armv7s  <626ba6781ad234a6a13a21628359eed6> /System/Library/PrivateFrameworks/WirelessProximity.framework/WirelessProximity
0x2acc9000 - 0x2ad22fff CoreBrightness armv7s  <ec9ea6cfc4423013b6585d3c10f8200e> /System/Library/PrivateFrameworks/CoreBrightness.framework/CoreBrightness
0x2b385000 - 0x2b389fff ZoomServices armv7s  <ee390e6675c5312e9d3c635c037f1237> /System/Library/PrivateFrameworks/Accessibility.framework/Frameworks/ZoomServices.framework/ZoomServices
0x2d816000 - 0x2d821fff AccessibilitySettingsLoader armv7s  <7beac4ee99d83479bcc7ea339bb3ae98> /System/Library/AccessibilityBundles/AccessibilitySettingsLoader.bundle/AccessibilitySettingsLoader
0x2de2f000 - 0x2de40fff libCGInterfaces.dylib armv7s  <5ddb602e82d03dc6b434077953178c24> /System/Library/Frameworks/Accelerate.framework/Frameworks/vImage.framework/Libraries/libCGInterfaces.dylib
0x2ed0b000 - 0x2ed17fff AppleFSCompression armv7s  <c3f1e9ffb2af31f3826834e9b3635f23> /System/Library/PrivateFrameworks/AppleFSCompression.framework/AppleFSCompression
0x2ed18000 - 0x2ed22fff AppleIDAuthSupport armv7s  <11bf861eff6a3ff0842dd31184e054a2> /System/Library/PrivateFrameworks/AppleIDAuthSupport.framework/AppleIDAuthSupport
0x30068000 - 0x30074fff libGSFontCache.dylib armv7s  <933c740a7dba36c3a1f07dcb6705de6d> /System/Library/PrivateFrameworks/FontServices.framework/libGSFontCache.dylib
0x30075000 - 0x3009dfff libTrueTypeScaler.dylib armv7s  <d76fbc7c46063ac3af07f7fad6ddea42> /System/Library/PrivateFrameworks/FontServices.framework/libTrueTypeScaler.dylib
0x3010f000 - 0x30138fff Futhark armv7s  <11d528fa16503011aed5199975e15295> /System/Library/PrivateFrameworks/Futhark.framework/Futhark
0x323d9000 - 0x3255ffff libFosl_dynamic.dylib armv7s  <dfc4f65804f930b69dc0e841986ee2a2> /usr/lib/libFosl_dynamic.dylib
0x32910000 - 0x32939fff libpcap.A.dylib armv7s  <3cab8745ab1c33ce9f1ac6f5510350c9> /usr/lib/libpcap.A.dylib
0x3296a000 - 0x32a36fff AVFAudio armv7s  <9893283ebbfa3601994f6057fd56ae18> /System/Library/Frameworks/AVFoundation.framework/Frameworks/AVFAudio.framework/AVFAudio
0x32a40000 - 0x32ba1fff Intents armv7s  <b1833dc8d70e32fb9ae1ff76c4711770> /System/Library/Frameworks/Intents.framework/Intents
0x32cbf000 - 0x32cddfff UserNotifications armv7s  <0c8538949c3735609c1c0a8fa6f55088> /System/Library/Frameworks/UserNotifications.framework/UserNotifications
0x3313e000 - 0x33151fff TextureIO armv7s  <be943d51496d34e19af7fba6e1a69824> /System/Library/PrivateFrameworks/TextureIO.framework/TextureIO
0x33585000 - 0x33587fff SpeakTypingServices armv7s  <36951a533a3a3f8bbd6907249c44054b> /System/Library/PrivateFrameworks/Accessibility.framework/Frameworks/SpeakTypingServices.framework/SpeakTypingServices
0x34466000 - 0x34476fff libBNNS.dylib armv7s  <3b883cc0cda3348898936b86e80b19f4> /System/Library/Frameworks/Accelerate.framework/Frameworks/vecLib.framework/libBNNS.dylib
0x34477000 - 0x3447cfff libQuadrature.dylib armv7s  <f7ce640795e23203b4ede2b4f796476b> /System/Library/Frameworks/Accelerate.framework/Frameworks/vecLib.framework/libQuadrature.dylib
0x347ea000 - 0x347f9fff CoreEmoji armv7s  <9bcc4b3fe845327da2a02482ca237f5d> /System/Library/PrivateFrameworks/CoreEmoji.framework/CoreEmoji
0x34ce5000 - 0x34ce5fff IntentsFoundation armv7s  <c02ca17aa6b33da590dff7abce235bdc> /System/Library/PrivateFrameworks/IntentsFoundation.framework/IntentsFoundation
0x34e04000 - 0x34eecfff NLP armv7s  <ab1ad0d2c64d3b82904595667ebcf4fd> /System/Library/PrivateFrameworks/NLP.framework/NLP
0x355d6000 - 0x355dafff SymptomDiagnosticReporter armv7s  <22d6f6b705a535adba55185a55856266> /System/Library/PrivateFrameworks/SymptomDiagnosticReporter.framework/SymptomDiagnosticReporter
0x35c38000 - 0x35ccafff libate.dylib armv7s  <afbc60d2e18131bebec9b066286698ec> /usr/lib/libate.dylib
0x35ccb000 - 0x35ccbfff libcoretls.dylib armv7s  <75f36b87b15f3d0a862f10e0d0b4155a> /usr/lib/libcoretls.dylib
0x35ccc000 - 0x35ccdfff libcoretls_cfhelpers.dylib armv7s  <1debb8792dfb36d49260c7d7e1e1f4bd> /usr/lib/libcoretls_cfhelpers.dylib

EOF
Comment 7 Alex Soto [MSFT] 2017-06-19 14:19:17 UTC
@Adrian Gallero the provided crashlog is not symbollicated you can follow this guide if you are having issues http://jmillerdev.net/symbolicating-ios-crash-files-xamarin-ios/
Comment 8 Adrian Gallero 2017-06-19 18:49:33 UTC
Hi,
I've followed the steps in that page, but it doesn't seem to output something very different.

I will attach the symbolicated log along with the 3 files I used to create it (according to the procedure in the website). But do you have an idea of how that log should look like?

Again and just in case, this is happening in DEBUG (not Release), DEVICE (not Simulator), and 32 BIT (not 64 bit). I am mentioning this because I downloaded my own attached app, tried it in the latest VS and it seemed to work fine. But then I realized it was in Release mode. I tried it in DEBUG, and it crashed again.
Comment 9 Adrian Gallero 2017-06-19 20:03:10 UTC
Created attachment 22980 [details]
Symbolicated log as asked

I couldn't attach the other files due to size restriction to 8MB.
But I've made them available just in case here:
http://www.tmssoftware.biz/flexcel/samples/symbolicated_log.zip
Comment 10 John Miller [MSFT] 2017-07-27 18:12:35 UTC
Thanks so much for taking the time to submit this report! I can confirm using the latest Xamarin.iOS 10.12.0.14 I am able to reproduce this issue. Marking this report as CONFIRMED. 

Here is a UI test that shows the crash:
https://testcloud.xamarin.com/test/com-tmssoftware-com-testingread_2ddb959e-9c0b-4870-8756-d1aee75ebb8d/

Ignore that it is green. Instead, look at the Stack Trace tab for the crash dump.

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