✅ Roslyn analyzer: System.Guid only has _dummyPrimitive field?

I'm currently writing an analyzer that inspects the fields of certain types. One of the tests failed because it analyzed

System.Guid

System.Guid

and I noticed that, according to this query:

ITypeSymbol type = ... // type is Guid
type.GetMembers().OfType<IFieldSymbol>().Where(f => !f.IsStatic)

ITypeSymbol type = ... // type is Guid
type.GetMembers().OfType<IFieldSymbol>().Where(f => !f.IsStatic)

System.Guid

System.Guid

only has a single field:

int _dummyPrimitive

int _dummyPrimitive

. I know that guids are larger than 4 bytes and given the field name, I assume this is a placeholder of some sort. I could just ignore

System.Guid

System.Guid

but I suspect this is not the only type that behaves this way.

1. Why is the

ITypeSymbol

ITypeSymbol

System.Guid

System.Guid

a placeholder (or whatever this is) and not the original definition?
2. Can I somehow detect when a type is a placeholder?

C#•3y ago•

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