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minxomat

I managed to crash SciTe with an AutoIt error & Possible Error in Struct access?

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minxomat

The error (?)

I was writing a pretty large script the other day when I came across unexpected errors while accessing structs via the period operator.

1. Create an array containing structs (can be different structs, simplified here):

Local $T = DllStructCreate
Local $aStr[] = [$T("int x;int y"), $T("int x;int y")]
$aStr[0].x = 1
$aStr[0].y = 2
$aStr[1].x = 3
$aStr[1].y = 4

2. Working: Simple access via With:

With $aStr[0]
   .y += .x - $aStr[1].x / .y ^ 2               ; $aStr[1] is a valid reference
EndWith

3. ERROR: Use struct element as Array index, simplified:

With $aStr[0]
   .y += .x - $aStr[.x].x / .y ^ 2
EndWith

produces:

==> Variable subscript badly formatted.:
.y += .x - $aStr[.x].x / .y ^ 2
.y += .x - $aStr[.x].x / .y ^ ^ ERROR

4. ERROR: Struct element as Array index, complex:

With $aStr[0]
   .y += .x + ((Sqrt(Abs($aStr[1].x^2+$aStr[.x].y^2))-$aStr[1].x)/.y)*.y
EndWith

produces:

==> Unbalanced brackets in expression.:
.y += .x + ((Sqrt(Abs($aStr[1].x^2+$aStr[.x].y^2))-$aStr[1].x)/.y)*.y
.y += .x + ((Sqrt(Abs($aStr[1].x^2+$aStr[^ ERROR

5. ERROR: Struct element as Array index, outside of any With:

Function($aStr[$aStr[0].x].y)

Func Function($nP)
   Return Default
EndFunc

produces:

==> Unbalanced brackets in expression.:
Function($aStr[$aStr[0].x].y)
Function($aStr[^ ERROR

 

Crashing SciTe

Now, this is a abstract example of this error. But in my script, AutoIt executed the script, then aborted with an error (not warning). I tried to jump to the error within SciTe using F4. That is when SciTe itself crashed with a memory exception ("SciTe.exe does not respond blah blah..."). This happend every time and I was able to reproduce this on different PCs. I lost the script however. I will try to recreate it ;-)

 

Example

You can download a script for testing. Remove the "#" to test each line.  Download: refer.au3.

Edited by minx

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minxomat

Also strange: The error pointer "^" is always on the wrong character.


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minxomat

SciTE Lite 3.4.1 (the one included in the latest stable)

Edit: This also happened with SciTE4Au3

Edited by minx

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minxomat

Let me know when you have a way to replicate it so I can have a look.

Jos

​I guess it is not a SciTE problem. I assume AutoIt runs in the memory of SciTE when executed via F5? Then it should be an error in the AutoIt Interpreter (caused by the bug above).


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minxomat

Hello,

try it this way.

With $aStr[0]
   .y += .x - ($aStr[.x]).x / .y ^ 2
EndWith
With $aStr[0]
   .y += .x + ((Sqrt(Abs($aStr[1].x^2+($aStr[.x]).y^2))-$aStr[1].x)/.y)*.y
EndWith
Function($aStr[($aStr[0].x)].y)

 

​This is merely a workaround, not clean code.


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bernd670

What's not a clean code here?

With the brackets but only the priority of the operator is changed. This is done in many languages so!

Edited by bernd670

greetings
bernd


I hacked 127.0.0.1 -> pcfred6.gif

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guinness

Maybe I missing something, but when did dot notation work on DllStructCreate in the stable version?


UDF List:

 
_AdapterConnections()_AlwaysRun()_AppMon()_AppMonEx()_ArrayFilter/_ArrayReduce_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: 22/04/2018

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minxomat

What's not a clean code here?

With the brackets but only the priority of the operator is changed. This is done in many languages so!

​No it isn't. () in AutoIt is "convert to expression". The value of .x should be directly accessible, the priority is completely irrelevant here :)


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guinness

​When using With...EndWith, but again I ask, where in the changelog does it say you can do ... $aStr[0].x = 1? Honestly, I believe this to still be an experimental feature, from my limited understanding of course.

 

 


UDF List:

 
_AdapterConnections()_AlwaysRun()_AppMon()_AppMonEx()_ArrayFilter/_ArrayReduce_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: 22/04/2018

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minxomat

​When using With...EndWith, but again I ask, where in the changelog does it say you can do ... $aStr[0].x = 1? Honestly, I believe this to still be an experimental feature, from my limited understanding of course.

​Hm. It's enabled in the stable, so it should not produce unrelated errors (IMHO). It isn't mentioned in the Help file, but it is there.


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Melba23

minx,

It's enabled in the stable, so it should not produce unrelated errors (IMHO). It isn't mentioned in the Help file, but it is there.

That is a complete non sequitur. If something is not mentioned in the Help file then it is not even "Experimental" and should not be used under any circumstances - even if it apparently "works" in some cases.  So complaining that there are problems when using it is unlikely to get any response other than the one I have just given.

M23


Any of my own code posted anywhere on the forum is available for use by others without any restriction of any kind._______My UDFs:

Spoiler

ArrayMultiColSort ---- Sort arrays on multiple columns
ChooseFileFolder ---- Single and multiple selections from specified path treeview listing
Date_Time_Convert -- Easily convert date/time formats, including the language used
ExtMsgBox --------- A highly customisable replacement for MsgBox
GUIExtender -------- Extend and retract multiple sections within a GUI
GUIFrame ---------- Subdivide GUIs into many adjustable frames
GUIListViewEx ------- Insert, delete, move, drag, sort, edit and colour ListView items
GUITreeViewEx ------ Check/clear parent and child checkboxes in a TreeView
Marquee ----------- Scrolling tickertape GUIs
NoFocusLines ------- Remove the dotted focus lines from buttons, sliders, radios and checkboxes
Notify ------------- Small notifications on the edge of the display
Scrollbars ----------Automatically sized scrollbars with a single command
StringSize ---------- Automatically size controls to fit text
Toast -------------- Small GUIs which pop out of the notification area

 

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