Write-Output $null -NoEnumerate produces different Collection<PSObject> in 5.1 vs 6.0 #6451
Description
I'm not sure which behavior is better, but I expected 5.1 and 6.0 to behave the same in this respect. If this change is deliberate I would like to understand why.
Steps to reproduce
$r = [System.Collections.ObjectModel.Collection[psobject]]{Write-Output $null -NoEnumerate}.Invoke()
$r.item(0).GetType()Behavior in PowerShell 5.1
You cannot call a method on a null-valued expression.
At C:\Users\un1\Desktop\test.ps1:2 char:1
+ $r[0].GetType()
+ ~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidOperation: (:) [], RuntimeException
+ FullyQualifiedErrorId : InvokeMethodOnNull
>$PSVersionTable
Name Value
---- -----
PSVersion 5.1.14409.1012
PSEdition Desktop
PSCompatibleVersions {1.0, 2.0, 3.0, 4.0...}
BuildVersion 10.0.14409.1012
CLRVersion 4.0.30319.42000
WSManStackVersion 3.0
PSRemotingProtocolVersion 2.3
SerializationVersion 1.1.0.1 Behavior in PowerShell 6.0
IsPublic IsSerial Name BaseType
-------- -------- ---- --------
True True PSObject[] System.Array
> $PSVersionTable
Name Value
---- -----
PSVersion 6.0.2
PSEdition Core
GitCommitId v6.0.2
OS Microsoft Windows 6.3.9600
Platform Win32NT
PSCompatibleVersions {1.0, 2.0, 3.0, 4.0...}
PSRemotingProtocolVersion 2.3
SerializationVersion 1.1.0.1
WSManStackVersion 3.0