Accessing "last created control" once GUI deleted - AutoIt HardCrash

[mLipok]

Today I have another day cleanup of old scripts.
I changed my own UDF files.
Most scripts that use these UDF is working properly, only one showed a tendency to HardCrash.

After a few hour searching, I managed to prepare the reproductive script.
I know that he is in some sense an unusual but in the best way I know of shows where the error is.

#include <GUIConstantsEx.au3>

ConsoleWrite(@CRLF & 'Checking normal behavior' & @CRLF)
GUI()

ConsoleWrite(@CRLF & 'Checking AutoIt HardCrash' & @CRLF)
GUI(True)

Func GUI($bTest = False )
	Local $hGUI = GUICreate('TITLE', 100, 100)
	Local $idEdit = GUICtrlCreateEdit('', 1, 1, 99, 99)
	GUIDelete($hGUI)

	ConsoleWrite('$bTest = '&$bTest &' @ScriptLineNumber =' & @ScriptLineNumber & @CRLF)
	If $bTest = True then
		; Here you can see AutoIt HardCrash
		GUICtrlSetResizing(-1, $GUI_DOCKALL)
	Else
		GUICtrlSetResizing($idEdit, $GUI_DOCKALL)
	EndIf
	ConsoleWrite('$bTest = '&$bTest &' @ScriptLineNumber =' & @ScriptLineNumber & @CRLF)
EndFunc   ;==>GUI

Checked on:
AutoIt 3.3.10.2 and 3.3.13.10

[Melba23]

In fact the problem is caused by trying to reference the "last created control" once the GUI containing it has been deleted - the actual function used is irrelevant (I have amended the ticket title to reflect this). No doubt the internal reference to this control has been deleted along with the GUI.

I would argue that using the "-1" shorthand should be avoided wherever possible - which would render the problem moot - and that trying to access controls once the GUI holding them has been deleted is not something that should be done either. But worth a look to see if there is a simple check which would prevent the crash.

M23

[mLipok]

Replying to Melba23:

the actual function used is irrelevant

Yes you have right, but in my script this was not intentional, just a mistake, in a process of massive change.

So I describe what happend to me.
I have Gui wrappers like this:

_GUI_Question($sQuestion)
_GUI_Info('$sMessage')

and my main gui lets call them:
_GUI_FRAMEWORK_INIT()

I can add TabItem to existing GUI_FRAMEWORK

So some controls was created and deleted when _GUI_Question() was called , to ask user for config option when my program starts, and then I missed to initialize _GUI_FRAMEWORK_INIT() before I add new TabItem (I change the place where GUI_FRAMEWORK is initialized).

Actually I'm making a massive change in my old (but working and still developed) scripts. So that issue, just happens.

[Jon]

Fixed by revision [10489] in version: 3.3.13.11