Subj : Re: AV in tear-down
To   : netscape.public.mozilla.jseng
From : "Sterling Bates" <sblist*nospam*serv@bigbangco.com>
Date : Sat Nov 22 2003 12:57 am

Well, would-ya look at this:

$10058C80  C:\PROGRAM
FILES\BORLAND\DELPHI5\PROJECTS\COMPONENTS\JS\JS3215D.DLL  JS_XDRMemDataLeft
$10039B09  C:\PROGRAM
FILES\BORLAND\DELPHI5\PROJECTS\COMPONENTS\JS\JS3215D.DLL  JS_XDRMemDataLeft
$10039287  C:\PROGRAM
FILES\BORLAND\DELPHI5\PROJECTS\COMPONENTS\JS\JS3215D.DLL  JS_XDRMemDataLeft
$10013517  C:\PROGRAM
FILES\BORLAND\DELPHI5\PROJECTS\COMPONENTS\JS\JS3215D.DLL  JS_XDRMemDataLeft
$10005899  C:\PROGRAM
FILES\BORLAND\DELPHI5\PROJECTS\COMPONENTS\JS\JS3215D.DLL  JS_XDRMemDataLeft
$00455EA7 C:\PROGRAM FILES\BORLAND\DELPHI5\PROJECTS\COMPONENTS\JS\JSTEST.EXE
TJSEngine::Destroy  in jsintf  line 418
$0042FB77 C:\PROGRAM FILES\BORLAND\DELPHI5\PROJECTS\COMPONENTS\JS\JSTEST.EXE
TControl::Click  in Controls  line 4279
$00426D17 C:\PROGRAM FILES\BORLAND\DELPHI5\PROJECTS\COMPONENTS\JS\JSTEST.EXE
TButton::Click  in StdCtrls  line 2882
$00426EED C:\PROGRAM FILES\BORLAND\DELPHI5\PROJECTS\COMPONENTS\JS\JSTEST.EXE
TButton::CMDialogKey  in StdCtrls  line 2941
$0042F94F C:\PROGRAM FILES\BORLAND\DELPHI5\PROJECTS\COMPONENTS\JS\JSTEST.EXE
TControl::WndProc  in Controls  line 4190

That's a stack trace!  Not terribly detailed inside the js engine, mind you,
but it gets the routine name.  The funny thing is, I didn't use JS_XDR
routines at all.  This crash occurs on the 19th create-run-tear-down
iteration.

If I comment out the JS_DefineFunction code:

        jsobj :=
JS_DefineObject(fcx,AParent,PChar(str),@fclasses[Length(fclasses)-1],nil,0);

        New(data);
        data^.engine := self;
        data^.data := addr;

        JS_SetPrivate(fcx,jsobj,data);

Then the project works fine indefinitely.  AParent = the object of which
this function is a member; @fclasses[...] points to a static class record.
I don't think that the |data| pointer would have any bearing on this, that's
handled on my end.

Any ideas what I can do next?

Sterling

.