I'm not sure it is a bug, so I'm asking here before reporting it as such.

this code:

procedure TForm1.Timer1Timer(Sender: TObject);
begin
   timer1.enabled:=false;
   while not Application.Terminated do
   begin
     image1.Picture.loadfromfile('test.png');
     Label1.Tag:=Label1.Tag+1;
     Label1.Caption:=IntToStr(Label1.Tag);
     Application.ProcessMessages;
   end;
end;

works perfectly under windows, but under linux/gtk2 the application is using more and more memory (slowly but constantly, until the OOM kills it) both for the application itself and for X.
Of course heaptrc reports no leak, using cmem doesn't help.

Before you ask, the application is not an interactive one, and the above construct is to avoid using a thread (which makes memory usage even worse), the real loop is like "read some data from the network, display it, application.processmessages". If I limit myself to update labels, memory usage stays constant, as soon as I try to use images (like the above example) memory usage starts growing.

This happened both with an old svn revision (22350) with fpc 2.2.4 and with a version updated yesterday (27607) with fpc 2.4.0.

Bye

En/na Luca Olivetti ha escrit:

I worked around the problem by caching the images in memory instead of loading them every time, but I'd like to know where the above is leaking memory.

Bye