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Vistas.NET - Which system assemblies are annotated for nullable reference types?
I'm trying to find the status of .NET system assemblies regarding the nullable reference types feature of C# 8.
Non-annotated code, or code written with earlier language versions will be treated as "null-oblivious", meaning the compiler won't generate any warnings regarding nullability.
This is really annoying when it comes to using system assemblies from a nullable enabled context, as there's no way to tell if null-checking is required or not.
Is there any way to check if an assembly is annotated for nullable reference types?
Or is there some official status page about this?
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In VS 16.10, you should be able to see whether nullability was enabled in an external assembly by using go-to-definition on a symbol from that assembly that you're using in your code. If nullability was enabled, you should see #nullable enable at the top of the file. This also appears to work in VS Code when using the latest C# extension.
Note that in VS this currently requires disabling "navigation to decompiled sources (experimental)" in Options -> Text Editor -> C# -> Advanced.
As far as a status page--it might help you to look over this issue in the dotnet runtime repo, which outlines when certain system assemblies were nullable-annotated.