[fpc-pascal] AddTerminateProc leak?

silvioprog silvioprog at gmail.com
Thu Mar 5 21:06:37 CET 2015


On Wed, Mar 4, 2015 at 11:45 PM, silvioprog <silvioprog at gmail.com> wrote:

> Hello,
>
> The test:
>
> === begin code ===
>
> program project1;
>
> uses
>   heaptrc,
>   SysUtils;
>
>   function _Finalize: boolean;
>   begin
>     WriteLn('END');
>     Result := True;
>   end;
>
> begin
>   WriteLn('START');
>   AddTerminateProc(@_Finalize);
>   WriteLn('END 1');
>   Sleep(1000);
>   DeleteFile('HT.TXT');
>   SetHeapTraceOutput('HT.TXT');
> end.
>
> === end code ===
>
> The result:
>
> === begin trace ===
> Heap dump by heaptrc unit
> 50 memory blocks allocated : 1226/1344
> 49 memory blocks freed     : 1218/1336
> 1 unfreed memory blocks : 8
> True heap size : 196608 (112 used in System startup)
> True free heap : 196416
> Should be : 196424
> Call trace for block $0018F150 size 8
>   $BAADF00D
>   $BAADF00D
>   $BAADF00D
>   $BAADF00D
>   $BAADF00D
>   $BAADF00D
>   $BAADF00D
>   $BAADF00D
> === end trace ===
>
> The leak is returned even calling the CallTerminateProcs function.
>
> I did something wrong or is it really a leak?
>
> Thank you!
>

Delphi 7+ has the SysUtils.FreeTerminateProcs procedure that frees the
method added via the SysUtils.AddTerminateProc procedure.

I'll make a patch implementing it ...

Thank you!

-- 
Silvio Cl├ęcio
My public projects - github.com/silvioprog
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