NullReferenceException in Get-Command #9396
Description
Steps to reproduce
# This throws:
PS> get-command "less `"-PsPage %db?B of %D:`"" -ErrorAction Ignore
get-command : Object reference not set to an instance of an object.
# This doesn't:
PS> get-command "less `"-PsPage %db?B of %D`"" -ErrorAction IgnoreIt looks like the D: in the string looks like a path??
Expected behavior
This command shouldn't throw a terminating error given this input.
Actual behavior
It throws this exception:
PSMessageDetails :
Exception : System.NullReferenceException: Object reference not set to an instance of an object.
at System.Management.Automation.CommandSearcher.GetNextFromPath() in C:\Users\Keith\GitHub\r
keithhill\PowerShell\src\System.Management.Automation\engine\CommandSearcher.cs:line 477
at System.Management.Automation.CommandSearcher.ProcessBuiltinScriptState() in C:\Users\Keit
h\GitHub\rkeithhill\PowerShell\src\System.Management.Automation\engine\CommandSearcher.cs:line
292
at System.Management.Automation.CommandSearcher.MoveNext() in C:\Users\Keith\GitHub\rkeithhi
ll\PowerShell\src\System.Management.Automation\engine\CommandSearcher.cs:line 191
at
Microsoft.PowerShell.Commands.GetCommandCommand.FindCommandForName(SearchResolutionOptions
options, String commandName, Boolean isPattern, Boolean emitErrors, Int32& currentCount,
Boolean& isDuplicate) in C:\Users\Keith\GitHub\rkeithhill\PowerShell\src\System.Management.Auto
mation\engine\GetCommandCommand.cs:line 887
at Microsoft.PowerShell.Commands.GetCommandCommand.AccumulateMatchingCommands(IEnumerable`1
commandNames) in C:\Users\Keith\GitHub\rkeithhill\PowerShell\src\System.Management.Automation\e
ngine\GetCommandCommand.cs:line 759
at Microsoft.PowerShell.Commands.GetCommandCommand.AccumulateMatchingCommands() in C:\Users\
Keith\GitHub\rkeithhill\PowerShell\src\System.Management.Automation\engine\GetCommandCommand.cs
:line 700
at Microsoft.PowerShell.Commands.GetCommandCommand.ProcessRecord() in C:\Users\Keith\GitHub\
rkeithhill\PowerShell\src\System.Management.Automation\engine\GetCommandCommand.cs:line 421
at System.Management.Automation.Cmdlet.DoProcessRecord() in C:\Users\Keith\GitHub\rkeithhill
\PowerShell\src\System.Management.Automation\engine\cmdlet.cs:line 173
at System.Management.Automation.CommandProcessor.ProcessRecord() in C:\Users\Keith\GitHub\rk
eithhill\PowerShell\src\System.Management.Automation\engine\CommandProcessor.cs:line 386
TargetObject :
CategoryInfo : NotSpecified: (:) [Get-Command], NullReferenceException
FullyQualifiedErrorId : System.NullReferenceException,Microsoft.PowerShell.Commands.GetCommandCommand
ErrorDetails :
InvocationInfo : System.Management.Automation.InvocationInfo
ScriptStackTrace : at <ScriptBlock>, <No file>: line 1
PipelineIterationInfo : {}
Environment data
Name Value
---- -----
PSVersion 6.2.0-rc.1
PSEdition Core
GitCommitId 6.2.0-rc.1-167-ge9ffbe5cf27ad6461607fcf4bc69258652a88d33
OS Microsoft Windows 10.0.17763
Platform Win32NT
PSCompatibleVersions {1.0, 2.0, 3.0, 4.0…}
PSRemotingProtocolVersion 2.3
SerializationVersion 1.1.0.1
WSManStackVersion 3.0
Interesting this shows 6.2.0-rc.1 since I'm building off of the latest on master. BTW this is a regression from 6.1.0 where this did not throw an NRE.