[Python-bugs-list] memory leak in loops (PR#398)

[ingo.adler@synacon.ch]

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> > // The Loop
> >     PyRun_SimpleString(
> >         "y = Y()\n"
> >         "for i in range(1000):\n"
> >         "\tx = y.getX()\n"
> >         "\tx.getNumber()\n"
>
> Could be that SWIG doesn't get a chance to cleanup the shadow
> object for x and y. Try adding
>
> del x,y
>
> as final script line.
>
> Note that SWIG uses Python strings to represent pointers in
> C++. It uses an internal table to store these.
>

I changed the code to:

    PyRun_SimpleString(
        "y = Y()\n"
        "for i in range(1000):\n"
        "\tx = y.getX()\n"
        "\tx.getNumber()\n"
        "\tdel x\n"
    );

It doesn't change anything.

The memory leak only occurs when I call x.getNumber() in the loop. Otherwise x =
y.getX() is memory leak free.

Ingo Adler

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