Repro steps

Microsoft (R) F# Interactive version 10.6.0.0 for F# 4.7
Copyright (c) Microsoft Corporation. All Rights Reserved.

For help type #help;;

> type A<'T>() = inherit System.Attribute()
type B = A<string>
[<B>] type C = class end;;


error FS0193: internal error: The lists had different lengths.
list2 is 1 element shorter than list1

Parameter name: list2

> 

Expected behavior

One of:

• Compiles to a type with a generic attribute.
• Gives an accurate error about generic attributes not being supported.

Actual behavior

error FS0193: internal error: The lists had different lengths.
list2 is 1 element shorter than list1

Related information

Provide any related information (optional):

• Operating system: Windows 10
• .NET Runtime kind (.NET Core, .NET Framework, Mono): .NET Framework 4.8
• Editing Tools (e.g. Visual Studio Version, Visual Studio): VS16.3.9