ToArray() broken on some IEnumerables

[selinc]

I can't quite figure out the root cause of why its failing, but found this working and broken cases for ToArray() on IEnumerable.

https://deck.net/a664ebec105b796041f8ab8ea6e496c0

    public static void Broken(string[] strings)
    {   
        var stringEnumerable = new string[]{"_"}.Concat(strings);
        var stringArray = stringEnumerable.ToArray();
    }

    public static void Works(string[] strings)
    {   
        var stringEnumerable = Enumerable.Repeat("_", 1).Concat(strings);
        var stringArray = stringEnumerable.ToArray();
    }

Its strange that string[] breaks while Enumerable.Repeat side steps whatever the issue is-- Hopefully these two cases help track it down more easily.

[selinc]

Haven't heard from you guys. Just pinging you to see the status or if it is even in the system yet (usually I get a response within two days or so).
Thanks

[selinc]

Bump... Haven't heard anything back. Is there any status?

[Edit]
It appears the actual problem is that the Linq Concat extension improperly returns an Array type. It should return an IEnumerable<T> to match dotnet.

[selinc]

Additionally this prevents you from calling ToArray() on an array to create a copy of that array.

[geoffrey.mcgill]

Hi. Maybe this issue will be solved with the following PR:
https://github.com/bridgedotnet/Bridge/pull/3818

I have not tested to confirm, but it seems they are related.