[Lldb-commits] [lldb] [llvm] [LLDB][Minidump] Support minidumps where there are multiple exception streams (PR #97470)

[Jacob Lalonde via lldb-commits]

Jlalond wrote:

> > @jeffreytan81 I think the callout for multiple exception is a good question. I made a C# testbed to see what would happen if I had multiple simultaneous exceptions. [Gist here](https://gist.github.com/Jlalond/467bc990f10fbb75cc9ca7db897a7beb). When manually collecting a minidump on my Windows system and then viewing it, I do get a warning that my application has multiple exceptions.
> > ![image](https://private-user-images.githubusercontent.com/25160653/346230140-d7f7f1c2-3de9-40bd-b692-f3f3ef23fd38.png?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.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.0hYRLR8moBxXwtvieDm-QrmHXdH_pxUUt8xLF4HriVE)
> > This leads me to believe multiple exceptions is acceptable, albeit rare.
> 
> That's good to know, but this is still an indirectly way to check. We would feel much convinced if you can copy the minidump generated by lldb to Windows and give windbg or Visual Studio a try.

Okay, I took the same program and then collected a dump with LLDB. As this was .net, we have an issue not collecting information about private core lib or the windows OS version, so Visual studio does encounter some issue. However I can still enter managed debug and see the exception objects on every thread.

https://github.com/llvm/llvm-project/pull/97470