Is mixed-mode debugging for x64 supported for .Net 6?

Question

Is mixed-mode debugging for x64 supported for .Net 6?

RLWA32 49,551

The docs at Mixed mode debugging for x64 processes is only supported when using Microsoft.NET Framework 4 or greater only refer to the .Net Framework. The docs are silent with respect to .Net (Core).

A solution contains a C++ console application (startup project), a C++/CLI class library (targeting .Net 6 and used to call into the C# class library), and a C# class library (targeting .Net 6). The VS2022 17.6.5 debugger cannot step through the code. If the debugger is set to Auto it will step into the C++ console application startup project but will not step into the C++/CLI class library. If the debugger is set to Mixed-Mode(.Net Core) attempting to step into the startup project using F10 just runs the application to completion.

The debugger options are set to Just My code.

Is mixed-mode debugging supported here?

Minxin Yu 13,506 Reputation points Microsoft External Staff

2023-07-24T06:34:27.72+00:00

For the content of the document, you can ask on GitHub related page. In my test, /clr: netcore ,add reference only supports Configuration type: DLL. Can you provide the way to load the DLL?
RLWA32 49,551 Reputation points

2023-07-24T08:13:23.1333333+00:00

The C++ startup project uses load-time linking. It links with the C++/CLI class library's import library and so loading is performed by the system at program startup. See image below.
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Minxin Yu 13,506 Reputation points Microsoft External Staff

2023-07-24T06:34:27.72+00:00

For the content of the document, you can ask on GitHub related page. In my test, /clr: netcore ,add reference only supports Configuration type: DLL. Can you provide the way to load the DLL?
RLWA32 49,551 Reputation points

2023-07-24T08:13:23.1333333+00:00

The C++ startup project uses load-time linking. It links with the C++/CLI class library's import library and so loading is performed by the system at program startup. See image below.
Deleted

This comment has been deleted due to a violation of our Code of Conduct. The comment was manually reported or identified through automated detection before action was taken. Please refer to our Code of Conduct for more information.

Answer 1

Minxin Yu 13,506 Microsoft External Staff

Hi,

Thanks for your information. I reproduced your problem.

I double checked and found that the .NET Framework library can't be debugged either. Debugger may not support in this way.

User's image

Update: Mixed-Mode(.Net Core)Add break points in C++/CLI library headers and C++ projects. It hits breakpoints in C++CLI, but skips C++ project's breakpoints.

It would be better to report the issue to Developer Community.

enter image description here

Best regards,

Minxin Yu

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RLWA32 49,551 Reputation points

2023-07-24T10:40:23.7433333+00:00

Reported. https://developercommunity.visualstudio.com/t/Mixed-mode-debugging-for-x64-and-Net-6/10421759
RLWA32 49,551 Reputation points

2023-07-29T12:40:55.8166667+00:00

Status of item changed to "Under Consideration".

Comment on item by MS - "Thanks for the feedback. As you have noticed, this is due to a limitation of the .NET Core runtime. We are evaluating our options here to address the limitation in future .NET runtime releases. In the meantime, you can attach to the target process with ‘native’ only debugger to debug portions of the code that get exercised before the .net runtime is loaded."

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Is mixed-mode debugging for x64 supported for .Net 6?

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