"dynamic" keyword breaks Unity's Assemblies?

Unity Engine
1

C# has had “dynamic” for a long time now (.NET 4?) and it’s supported fine by Unity.

Except … as soon as you start using the new Assemblies system (that’s becoming compulsory, e.g. Unit Testing won’t work without it), Unity fails, with:

error CS0656: Missing compiler required member 'Microsoft.CSharp.RuntimeBinder.CSharpArgumentInfo.Create'

Is this a known bug? Is it a WONTFIX? Can Assemblies work with dynamic?

(and … will it prevent building on iOS? (does this count as runtime code creation?))

NB: the Unity docs on runtime codegen don’t mention dynamic at all: Unity - Manual: Scripting restrictions

2

I’m just curious, but is there any legit reason for a known bug to be “wontfix”? Unity is pretty popular and big right now, unless there is a very good reason i cannot imagine them to ignore bugs often enough for “wontfix” to even be a term.

3

Well … for one example, there’s a few things in the new scriptable render pipelines that permanently break existing games and assets, that have been declared wontfix :). It’s a tool, just like any other: I’d rather have teams use it and be honest about it, than have them pretend they’ll fix it (when in fact they never intend to).