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ripdad

_ArrayDisplay - and arrays with no elements

8 posts in this topic

Recently, I've run across arrays with no elements.

When trying to view with _ArrayDisplay, array.au3 crashes at:

Line #(depending on version) --> Local $avArrayText[$iUBound + 1]

Perhaps checking if an element exist would be in order.

Example:

If (Not IsArray($avArray)) Or (Not UBound($avArray)) Then Return SetError(1, 0, 0)

Here is a reproducer:

#include <array.au3>

_Test()

Func _Test()
    Local $objWMI = ObjGet('Winmgmts:\\.\root\CIMV2')
    Local $objClass = $objWMI.Get('__NotifyStatus')
    Local $Value
    ;
    For $objItem in $objClass.SystemProperties_()
        $Value = $objItem.Value

        If IsArray($Value) Then

            MsgBox(0, '', 'Elements: ' & UBound($Value) & @CRLF & 'Subscripts: ' & UBound($Value, 0))

            _ArrayDisplay($Value)

        EndIf

    Next
EndFunc

Confirmation from anyone? Thanks.


Make yourself sheep and the wolves will eat you - Benjamin Franklin

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Same problem here with AutoIt 3.3.8.1 and 3.3.9.2.

I would recommend to open a bug report on Trac.


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#3 ·  Posted (edited)

This seems to be a rare case because there is no way in AutoIt to even define an Array without having at least 1 element. Strange.

Edited by guinness

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Updated: 04/09/2015

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Thanks for the replies.

Having read the rules for posting a bug report ... I think I'll pass.

It's enough to make aware.


Make yourself sheep and the wolves will eat you - Benjamin Franklin

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What do you mean? If it's a bug then it should be reported as not all Devs will see this.


_AdapterConnections()_AlwaysRun()_AppMon()_AppMonEx()_BinaryBin()_CheckMsgBox()_CmdLineRaw()_ContextMenu()_ConvertLHWebColor()/_ConvertSHWebColor()_DesktopDimensions()_DisplayPassword()_DotNet_Load()/_DotNet_Unload()_Fibonacci()_FileCompare()_FileCompareContents()_FileNameByHandle()_FilePrefix/SRE()_FindInFile()_GetBackgroundColor()/_SetBackgroundColor()_GetConrolID()_GetCtrlClass()_GetDirectoryFormat()_GetDriveMediaType()_GetFilename()/_GetFilenameExt()_GetHardwareID()_GetIP()_GetIP_Country()_GetOSLanguage()_GetSavedSource()_GetStringSize()_GetSystemPaths()_GetURLImage()_GIFImage()_GoogleWeather()_GUICtrlCreateGroup()_GUICtrlListBox_CreateArray()_GUICtrlListView_CreateArray()_GUICtrlListView_SaveCSV()_GUICtrlListView_SaveHTML()_GUICtrlListView_SaveTxt()_GUICtrlListView_SaveXML()_GUICtrlMenu_Recent()_GUICtrlMenu_SetItemImage()_GUICtrlTreeView_CreateArray()_GUIDisable()_GUIImageList_SetIconFromHandle()_GUIRegisterMsg()_GUISetIcon()_Icon_Clear()/_Icon_Set()_IdleTime()_InetGet()_InetGetGUI()_InetGetProgress()_IPDetails()_IsFileOlder()_IsGUID()_IsHex()_IsPalindrome()_IsRegKey()_IsStringRegExp()_IsSystemDrive()_IsUPX()_IsValidType()_IsWebColor()_Language()_Log()_MicrosoftInternetConnectivity()_MSDNDataType()_PathFull/GetRelative/Split()_PathSplitEx()_PrintFromArray()_ProgressSetMarquee()_ReDim()_RockPaperScissors()/_RockPaperScissorsLizardSpock()_ScrollingCredits_SelfDelete()_SelfRename()_SelfUpdate()_SendTo()_ShellAll()_ShellFile()_ShellFolder()_SingletonHWID()_SingletonPID()_Startup()_StringCompact()_StringIsValid()_StringRegExpMetaCharacters()_StringReplaceWholeWord()_StringStripChars()_Temperature()_TrialPeriod()_UKToUSDate()/_USToUKDate()_WinAPI_Create_CTL_CODE()_WinAPI_CreateGUID()_WMIDateStringToDate()/_DateToWMIDateString()Au3 script parsingAutoIt SearchAutoIt3 PortableAutoIt3WrapperToPragmaAutoItWinGetTitle()/AutoItWinSetTitle()CodingDirToHTML5FileInstallrFileReadLastChars()GeoIP databaseGUI - Only Close ButtonGUI ExamplesGUICtrlDeleteImage()GUICtrlGetBkColor()GUICtrlGetStyle()GUIEventsGUIGetBkColor()Int_Parse() & Int_TryParse()IsISBN()LockFile()Mapping CtrlIDsOOP in AutoItParseHeadersToSciTE()PasswordValidPasteBinPosts Per DayPreExpandProtect GlobalsQueue()Resource UpdateResourcesExSciTE JumpSettings INISHELLHOOKShunting-YardSignature CreatorStack()Stopwatch()StringAddLF()/StringStripLF()StringEOLToCRLF()VSCROLLWM_COPYDATAMore Examples...

Updated: 04/09/2015

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Yes please, do report it!


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When I run this example as is, the result "IsArray($Value) = 1" occurs only once out of ten (10) times in the For- Next loop.

When the line, ";If IsArray($Value) Then" is un-commented and the line, "If UBound($Value) Then" is commented, the message box describes a phantom array containing no rows and no columns and one dimension.

Maybe there is also a problem (bug) with the IsArray function returning positive on phantom arrays.

Or is this phantom array a new undiscovered variable type that belongs in a sci-fi movie? - Who knows?

#include <array.au3>

_Test()


Func _Test()
    Local $i = 0
    Local $objWMI = ObjGet('Winmgmts:.rootCIMV2')
    Local $objClass = $objWMI.Get('__NotifyStatus')
    Local $Value

    For $objItem In $objClass.SystemProperties_()
        $Value = $objItem.Value
        ConsoleWrite($i & "/ IsArray = " & IsArray($Value) & "   $Value = " & $Value & @LF)

        ;If IsArray($Value) Then
        If UBound($Value) Then
            ConsoleWrite("Inside If IsArray()  " & $i & "/ IsArray = " & IsArray($Value) & "   $Value = " & $Value & @LF)
            MsgBox(0, '', 'No. of rows: ' & UBound($Value) & @CRLF & 'No. of Cols: ' & UBound($Value, 2) & @CRLF & 'No. on dims: ' & UBound($Value, 0))

            _ArrayDisplay($Value)
        EndIf

        $i += 1
    Next
EndFunc   ;==>_Test

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Maybe there is also a problem (bug) with the IsArray function returning positive on phantom arrays.

I think most likely this is the root cause.

On that note - I filed the bug report on IsArray.

Thanks everyone.


Make yourself sheep and the wolves will eat you - Benjamin Franklin

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