Thank you so much for your prompt answer. But seems to me that in my script the things are exactly as you say, ie i reuse the item of the container hash. I already read and tested your example script, and even if reusing the value of the hash ref that contains data the leaks happen anyway. I have tried my script with tcl::ptk instead of tk and after long time the memory seems stable with no leaks. To install tcl::ptk i need to pre-install activetcl and Class::ISA. Could be that tk 8.5 has a different behavior respect tk 8.4? I hope you can give me some ideas .Thank a lot .

In reply to Re^2: Tk::tablematrix update leaks memory by Anonymous Monk
in thread Tk::tablematrix update leaks memory by abonvici

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