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Report From: Delphi-BCB/VCL/Standard Controls/TPopupMenu    [ Add a report in this area ]  
Report #:  92878   Status: Closed
Menus.PopupList variable and crash during application quitting
Project:  Delphi Build #:  15.0.3953.35171
Version:    15.1 Submitted By:   Radek Cervinka
Report Type:  Crash / Data loss / Total failure Date Reported:  4/6/2011 3:40:26 AM
Severity:    Infrequently encountered problem Last Updated: 4/7/2011 9:11:52 PM
Platform:    All platforms Internal Tracking #:  
Resolution: Cannot Reproduce (Resolution Comments) Resolved in Build: : None
Duplicate of:  None
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finalization section of is menus.pas


but sometimes is this section called twice and more (maybe FastMM in debug mode helped) and this leads to AV on PopupList.Free (object is already Free but not nil).

replace with
Steps to Reproduce:
I don't know, maybe problem in destructor of TMenuItem or so.

in Main Form of your application write


// workaround, this free PopupList and set to nil
// so in finalization section of Menus.pas
// and PopupList.Free is OK.

Radek Cervinka at 4/6/2011 3:41:58 AM -

or QC: 76416

Tomohiro Takahashi at 4/7/2011 2:26:44 AM -
If you have any sample project, could you please attach it to this report in order to reproduce your issue?

Radek Cervinka at 4/7/2011 3:33:07 PM -
I am very sorry, but I can't reproduce this regulary (I have project with 500KLOC and this occured sometimes before workaround). I have some feeling that this is related for using owner drawed own  TMenuItem subclass or exception during finalization of menus.pas, but I am not sure.

But workaround worked good, and suggested replace for FreeAndNil will probably solve this.

Tomohiro Takahashi at 4/7/2011 9:12:56 PM -
Ok, I closed this report as Sysop for the time being. However, if you find any way to rerpoduce your issue, please update this report and put a comment.

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