MemoryLeak in IWForm.TIWForm.ExecuteForm/GenerateForm/InitControl

[Peter Feldbaumer]

Hello,

I'm using IW 9.0.32 in D2007, and have enabled Memory-Leak reporting in
FastMM4.

Even with very simple pages FastMM4 reports leaks in
[IWForm.TIWForm.ExecuteForm]
[IWForm][IWForm.TIWForm.InitControl]
[IWForm][IWForm.TIWForm.GenerateForm]

all for TStringLists.

With tracing through the compiled IW-dcus I couldn't find any hints -
however I'm sure that it's not my code (no code of mine on the page, just 2
stock-IW-controls) - unfortunately the number of leaked objects increases
with the number of page reloads - so it seems to be serious for a 24/7
application...

Please see below for the stack-traces (from FastMM4)

I'd be very thankful for any hints?!



Nr. 1 -----------------------------------------------

A memory block has been leaked. The size is: 68

Stack trace of when this block was allocated (return addresses):
40340A [sys\system.pas][System][***@GetMem][2654]
4C981A [IWForm][IWForm.TIWForm.InitControl]
4E733E [IWBaseForm][IWBaseForm.TIWBaseForm.Create]
4DEE80 [IWServer][IWServer.TIWServer.Start]
4E1E07 [IWServer][IWServer.TIWServer.IWServerDefaultAction]
47C232 [HTTPApp.pas][HTTPApp][HTTPApp.TWebActionItem.DispatchAction][1107]
47CE98
[HTTPApp.pas][HTTPApp][HTTPApp.TCustomWebDispatcher.DispatchAction][1487]
57A25F
[InHTTPWebBrokerBridge][InHTTPWebBrokerBridge.TInHTTPWebBrokerBridge.DoCommandGet]
576F4F
[InCustomHTTPServer][InCustomHTTPServer.TInCustomHTTPServer.DoExecute]
56E21E [InContext][InContext.TInContext.Run]

The block is currently used for an object of class: TStringList

Nr. 2 -----------------------------------------------
A memory block has been leaked. The size is: 68

Stack trace of when this block was allocated (return addresses):
40340A [sys\system.pas][System][***@GetMem][2654]
4CD95D [IWForm][IWForm.TIWForm.ExecuteForm]
4F3D7A [IWApplication][IWApplication.TIWApplication.ExecuteActiveForm]
4DCE85 [IWServer][IWServer.TIWServer.ExecWhenTracIDIsInSync]
4DC4D1 [IWServer][IWServer.TIWServer.Exec]
4E28E5 [IWServer][IWServer.TIWServer.IWServerDefaultAction]
47C232 [HTTPApp.pas][HTTPApp][HTTPApp.TWebActionItem.DispatchAction][1107]
47CF25
[HTTPApp.pas][HTTPApp][HTTPApp.TCustomWebDispatcher.DispatchAction][1504]
57A25F
[InHTTPWebBrokerBridge][InHTTPWebBrokerBridge.TInHTTPWebBrokerBridge.DoCommandGet]
576F4F
[InCustomHTTPServer][InCustomHTTPServer.TInCustomHTTPServer.DoExecute]

The block is currently used for an object of class: TStringList


Nr. 3 -----------------------------------------------
A memory block has been leaked. The size is: 68

Stack trace of when this block was allocated (return addresses):
40340A [sys\system.pas][System][***@GetMem][2654]
4CA9A2 [IWForm][IWForm.TIWForm.GenerateForm]
4C0BA7 [IWAppForm][IWAppForm.TIWAppForm.GenerateForm]
4DC4EC [IWServer][IWServer.TIWServer.Exec]
4E1737 [IWServer][IWServer.TIWServer.IWServerDefaultAction]
47C232 [HTTPApp.pas][HTTPApp][HTTPApp.TWebActionItem.DispatchAction][1107]
47CF25
[HTTPApp.pas][HTTPApp][HTTPApp.TCustomWebDispatcher.DispatchAction][1504]
57A25F
[InHTTPWebBrokerBridge][InHTTPWebBrokerBridge.TInHTTPWebBrokerBridge.DoCommandGet]
576F4F
[InCustomHTTPServer][InCustomHTTPServer.TInCustomHTTPServer.DoExecute]
56E21E [InContext][InContext.TInContext.Run]

The block is currently used for an object of class: TStringList

[asp]

Hello, Peter!
I confirm you words. I have also found that TStringList objects leak
at every page reload (IW 9.0.32) as FastMM reports. I've written about
it in Atozedsoftware.intraweb newsgroup, but recieved no answer.