CA1062 stumbles when pattern-matching with []

[RenderMichael]

Version Used: .NET 7

Steps to Reproduce:

string? M(string[]? obj)
{
    if (obj is null or [])
    {
        return null;
    }
    return obj.ToString(); // error diagnosed here
}

[Youssef1313]

This belongs to dotnet/roslyn-analyzers

[RenderMichael]

This belongs to dotnet/roslyn-analyzers

@Youssef1313 Sorry! Could someone move this issue over or should I log a new one there?