Overloading and Extending an array

General
1

I have a set of extension methods for sorting and filtering arrays of objects.

The signature of the extension function Sort looks like this:

Sub Sort(Extends objects() As Object, sortDescriptors() As SortDescriptor)

The compiler stops with the following error:

The expected delegate is the comparator function Sort(sortMethod As Delegate).

Overloading works for example if I rename the extension functions like this:

Sub SortX(Extends objects() As Object, sortDescriptors() As SortDescriptor) // Sort only Sub SortX(Extends objects() As Object, sortDescriptors() As SortDescriptor, root As Predicate) // Sort and filter

Why does overloading the built-in Sort function not work, while overlaoding works for self-defined extension functions? Is this just an edge case bug and something to report in Feedback – or is it by design?

2

I haven’t looked into it, but it’s possibly a bug and name lookup is only seeing the built-in Sort function and not any user-defined extensions.