[Python-Dev] [4suite] cDomlette deallocation bug?

[Jeremy Kloth]

I'm CC python-dev as this may be a bug in the gc module. Although this may be 
more of a c.l.p. post, I think that this usage shouldn't cause segfaults 
regardless.

On Tuesday 22 August 2006 3:06 pm, Robert Fleming wrote:
> [step 1 unnecessary]
> 2. test program (test.c):
> /******** snip ********/
> #include <Python.h>
>
> #include <stdio.h>
>
> int main(int argc, char* argv[])
> {
>   int i;
>   for (i = 0; i<10; i++)
>     {
>       printf("%d\n", i);
>
>       Py_Initialize();
>       (void)PyRun_SimpleString("import sys\n"
>                    "sys.path.append('.')\n"
>                    "import cDomlettec");

Change the string to just "import gc" and the segfault still happens.

>       Py_Finalize();
>     }
>
>   return EXIT_SUCCESS;
> }
> /****** snip ********/
>
> 3. compile with:
> gcc -I/usr/include/python2.4 test.c -lpython2.4
>
> 4. run program; output is:
> 0
> 1
> Segmentation fault
>
> Am I doing something wrong?  I'm pretty new to embedding Python, but I'm
> hoping to be able to cleanly load and unload 4Suite this way

It just so happens that cDomlettec imports gc internally which, by the change 
above shows, causes the segfault.  Hopefully someone with more knowledge of 
GC internals can comment on this.

-- 
Jeremy Kloth
http://4suite.org/