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Assertion hit when resolving a break point #8731

@Tragetaschen

Description

@Tragetaschen

Steps to Reproduce

I have a couple of view model constructors where, when I set a break point on the line with the closing curly brace, the process on the iPhone hits an assertion and crashes. So far, I have not identified anything special about the constructor or last instruction—for example, there is one that just sets five ICommand properties. Some break points on the closing brace trigger it, some don't.

  1. Set or start with an existing break point

Expected Behavior

No crash

Actual Behavior

Resolved pending breakpoint at '*ViewModel.cs:22,1' to void *ViewModel..ctor (*ViewModel viewModel, *Service) [0x00053].
2020-06-02 16:01:50.740 *.iOS[8111:12135283] error: * Assertion at /Users/builder/jenkins/workspace/archive-mono/2020-02/ios/release/mono/mini/mini-arm64.c:5439, condition `native_offset % 4 == 0' not met
The app has been terminated.
[PLCrashReport] plframe_cursor_read_dwarf_unwind_int
[…]

Environment

Microsoft Visual Studio Professional 2019
Version 16.6.0
VisualStudio.16.Release/16.6.0+30114.105
Microsoft .NET Framework
Version 4.8.03752

Installed Version: Professional

Visual C++ 2019   00435-60000-00000-AA445
Microsoft Visual C++ 2019

Add New File   3.5.138
The fastest and easiest way to add new files to any project - including files that start with a dot

ASP.NET and Web Tools 2019   16.6.936.3669
ASP.NET and Web Tools 2019

ASP.NET Core Razor Language Services   16.1.0.2020603+b3ac44798c16fff5b95dbcfe62dea84aa9a1bd72
Provides languages services for ASP.NET Core Razor.

ASP.NET Web Frameworks and Tools 2019   16.6.936.3669
For additional information, visit https://www.asp.net/

Azure App Service Tools v3.0.0   16.6.936.3669
Azure App Service Tools v3.0.0

Azure Functions and Web Jobs Tools   16.6.936.3669
Azure Functions and Web Jobs Tools

C# Tools   3.6.0-4.20251.5+910223b64f108fcf039012e0849befb46ace6e66
C# components used in the IDE. Depending on your project type and settings, a different version of the compiler may be used.

Common Azure Tools   1.10
Provides common services for use by Azure Mobile Services and Microsoft Azure Tools.

Extensibility Message Bus   1.2.0 (d16-2@8b56e20)
Provides common messaging-based MEF services for loosely coupled Visual Studio extension components communication and integration.

IntelliCode Extension   1.0
IntelliCode Visual Studio Extension Detailed Info

Microsoft Azure Tools   2.9
Microsoft Azure Tools for Microsoft Visual Studio 2019 - v2.9.30212.1

Microsoft Continuous Delivery Tools for Visual Studio   0.4
Simplifying the configuration of Azure DevOps pipelines from within the Visual Studio IDE.

Microsoft JVM Debugger   1.0
Provides support for connecting the Visual Studio debugger to JDWP compatible Java Virtual Machines

Microsoft Library Manager   2.1.50+g25aae5a24a.R
Install client-side libraries easily to any web project

Microsoft MI-Based Debugger   1.0
Provides support for connecting Visual Studio to MI compatible debuggers

Microsoft Visual C++ Wizards   1.0
Microsoft Visual C++ Wizards

Microsoft Visual Studio Tools for Containers   1.1
Develop, run, validate your ASP.NET Core applications in the target environment. F5 your application directly into a container with debugging, or CTRL + F5 to edit & refresh your app without having to rebuild the container.

Microsoft Visual Studio VC Package   1.0
Microsoft Visual Studio VC Package

Mono Debugging for Visual Studio   16.6.17 (9692114)
Support for debugging Mono processes with Visual Studio.

Node.js Tools   1.5.20317.1 Commit Hash:3e70368beb9630c811076c051f4c9a59b45d7c10
Adds support for developing and debugging Node.js apps in Visual Studio

NPM Task Runner   1.4.90
Adds support for npm scripts defined in package.json directly in Visual Studio's Task Runner Explorer. Includes full support for Yarn

NuGet Package Manager   5.6.0
NuGet Package Manager in Visual Studio. For more information about NuGet, visit https://docs.nuget.org/

ProjectServicesPackage Extension   1.0
ProjectServicesPackage Visual Studio Extension Detailed Info

SQL Server Data Tools   16.0.62004.28040
Microsoft SQL Server Data Tools

Test Adapter for Boost.Test   1.0
Enables Visual Studio's testing tools with unit tests written for Boost.Test.  The use terms and Third Party Notices are available in the extension installation directory.

Test Adapter for Google Test   1.0
Enables Visual Studio's testing tools with unit tests written for Google Test.  The use terms and Third Party Notices are available in the extension installation directory.

TypeScript Tools   16.0.20417.2002
TypeScript Tools for Microsoft Visual Studio

Visual Basic Tools   3.6.0-4.20251.5+910223b64f108fcf039012e0849befb46ace6e66
Visual Basic components used in the IDE. Depending on your project type and settings, a different version of the compiler may be used.

Visual F# Tools 10.9.1.0 for F# 4.7   16.6.0-beta.20217.4+1c969cac25e2d38d71872efe6c8226029e42bb59
Microsoft Visual F# Tools 10.9.1.0 for F# 4.7

Visual Studio Code Debug Adapter Host Package   1.0
Interop layer for hosting Visual Studio Code debug adapters in Visual Studio

Visual Studio Container Tools Extensions (Preview)   1.0
View, manage, and diagnose containers within Visual Studio.

Visual Studio Tools for CMake   1.0
Visual Studio Tools for CMake

Visual Studio Tools for Containers   1.0
Visual Studio Tools for Containers

VisualStudio.DeviceLog   1.0
Information about my package

VisualStudio.Mac   1.0
Mac Extension for Visual Studio

WebPack Task Runner   1.5.94
Adds support for WebPack in Visual Studio 2015 and 2017's Task Runner Explorer.

Xamarin   16.6.000.1055 (d16-6@2873694)
Visual Studio extension to enable development for Xamarin.iOS and Xamarin.Android.

Xamarin Designer   16.6.0.318 (remotes/origin/d16-6@66afc5421)
Visual Studio extension to enable Xamarin Designer tools in Visual Studio.

Xamarin Templates   16.6.40 (1f1466f)
Templates for building iOS, Android, and Windows apps with Xamarin and Xamarin.Forms.

Xamarin.Android SDK   10.3.1.0 (d16-6/3fe860a)
Xamarin.Android Reference Assemblies and MSBuild support.
    Mono: 165f4b0
    Java.Interop: xamarin/java.interop/d16-6@2cab35c
    ProGuard: xamarin/proguard/master@905836d
    SQLite: xamarin/sqlite/3.31.1@49232bc
    Xamarin.Android Tools: xamarin/xamarin-android-tools/d16-6@bfb66f3


Xamarin.iOS and Xamarin.Mac SDK   13.18.1.31 (b3eedfe)
Xamarin.iOS and Xamarin.Mac Reference Assemblies and MSBuild support.

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