Just going thru the code, and the guy who wrote some of the core functions used Dynamic arrays in quite a few places, BUT here never uses Finalize() when he has finished with the array ! infact, it just stays allocated ! Some of these functions are call quite a lot of times too !
Looks like a start ! Jeremy -----Original Message----- From: Myles Penlington <[EMAIL PROTECTED]> To: Multiple recipients of list delphi <[EMAIL PROTECTED]> Date: Thu, 21 Aug 2003 09:36:59 +1200 Subject: RE: [DUG]: Access Violations > Your AV trace stuff is not very good - the call stack does not make > sense. > > However, the address given would appear to be a nil object reference > (or an > array?) - ie 0 + objectfieldoffset (Of a rather large object) ie 267 > bytes > from the object base. > > We have had the SQL general network error problem ($80000045 from > memory), > and the root cause was corrupted memory in our application - invalid > variants and WideStrings - note this is important. Ie it was not a > problem > with the SQL box, but rather issues in our code. And the app did not > fall > apart straight away. ie could take several minutes before it gave the > error > in the end. > > We ended up using some tools like BoundsChecker etc to test the app. > But > even with these it was very had to find. These in essence ruled out all > the > basic stuff, but did not locate the exact error - just narrowed down > the > area. > > Myles. > > -----Original Message----- > From: vss [mailto:[EMAIL PROTECTED] > Sent: Wednesday, 20 August 2003 16:05 > To: Multiple recipients of list delphi > Subject: [DUG]: Access Violations > > > Hi All. > An app. I wrote every now and then gets a GPF. > I am almost certain that the problem is related to or MSSQL box because > every now and again we get general network errors, but its not very > consistant, and our engineers dont seem to believe us ! > I run "eXpress Application Manager" AV stuff which gives me some res. > information, BUT I think the error below is really being caused > somewhere else or as a result of something else like the SQL box > problem > above. > BUT can someone look at it and tell me if it is not something else? > The Other reason I am sceptical is that 2 users were in 2 different > parts of the app, and they both got the same error at the same > time...well thats the story "I" got :-) > > Jeremy > > # 20/08/2003 09:31:12 [ EXCEPT ] Type : EAccessViolation ( > EExternal ) > Unit : Controls > Line : 10478 > Class : <N/A> > Function : InitIMM32 > Address : 0x00482581 > Sender Class : <N/A> > Sender Name : <N/A> > Message : Access violation at > address 00482581 in module 'ComCare.exe'. Read of address 0000010B > Call Stack : DBConsts::DateUtils > > SqlTimSt::TSQLTimeStampData.DoSubtract > > SqlTimSt::TSQLTimeStampData.Compare > > SqlTimSt::TSQLTimeStampData.DoAdd > > IniFiles::TCustomIniFile.ReadInteger > > Forms::TApplication.ActivateHint > > MultiMon::_GetSystemMetrics > System::TextOut > > System::@HandleAutoException > > System::@InitializeArray > > SysUtils::ValidateTimeStamp > SysUtils::FormatBuf > System::TextOut > System::ToLongPath > System::ToLongPath > ImgList::Forms > Forms::HintMouseThread > > Forms::TScreen.GetMetricSettings > ImgList::Forms > > StdCtrls::TListBoxStrings.Get > > Forms::TApplication.ActivateHint > > MultiMon::_GetSystemMetrics > System::TextOut > System::@Assign > System::@WStrFromPWChar > > F_XAM_Log::TfmXAMLog.FormCreate > IniFiles::F_XAM_Log > <Unknown>::<Unknown> > Variants::VarOpRare > <Unknown>::<Unknown> > > ----------------------------------------------------------------------- > ---- > New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] > Website: http://www.delphi.org.nz > To UnSub, send email to: [EMAIL PROTECTED] > with body of "unsubscribe delphi" > Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/ > ----------------------------------------------------------------------- > ---- > New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] > Website: http://www.delphi.org.nz > To UnSub, send email to: [EMAIL PROTECTED] > with body of "unsubscribe delphi" > Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/ --------------------------------------------------------------------------- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of "unsubscribe delphi" Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
