Get-FileHash is leaving file open - can't remove it later #4174
Description
This issue was originally filed on the Plaster project but the problem seems to be with PowerShell Core.
Steps to reproduce
PS C:\Users\Keith> $hash = (Get-FileHash .\remove.psd1).Hash
PS C:\Users\Keith> $hash
E58204D2C5BB9057A085C00D3EEC3ED96390C52A739D4ADCCC02A1B1A4DDF1B8
PS C:\Users\Keith> Remove-Item .\remove.psd1
Remove-Item : The process cannot access the file 'C:\Users\Keith\remove.psd1' because it is being used by another
process.
At line:1 char:1
+ Remove-Item .\remove.psd1
+ ~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : WriteError: (C:\Users\Keith\remove.psd1:FileInfo) [Remove-Item], IOException
+ FullyQualifiedErrorId : RemoveFileSystemItemIOError,Microsoft.PowerShell.Commands.RemoveItemCommandExpected behavior
Remove-Item should work.
Actual behavior
Remove-Item fails because apparently the execution of Get-FileHash has resulted in an open file handle on the file.
Environment data
> $PSVersionTable
Name Value
---- -----
PSVersion 6.0.0-beta
PSEdition Core
GitCommitId v6.0.0-beta.3-20-g27e47f9ee1aa0592bffe17c8f979cfa6513887a4
OS Microsoft Windows 10.0.15063
Platform Win32NT
PSCompatibleVersions {1.0, 2.0, 3.0, 4.0...}
PSRemotingProtocolVersion 2.3
SerializationVersion 1.1.0.1
WSManStackVersion 3.0