[pypy-dev] cpyext: Detecting pypy and other issues

[Roger Binns]

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On 05/02/2011 03:12 AM, Armin Rigo wrote:
> It is arguably a bug in your module, 

The rule seems to be that if the C code saves the value of *any* PyObject*
in a static variable then an incref must be done first.  I have actually
been doing this for everything (including PyTypeObject) except for the
module object itself.

> The point is that if it is was possible, then doing so in
> CPython would cause the module to see its refcount drop to zero, and
> be freed, which makes the pointer in the static global variable
> invalid.

This wouldn't have affected me.  There is no way you could have called a
function provided by the module if the module itself had been freed.

My other issue is happening where the object struct has a PyObject * that is
allocated with PyList_New(0) in the _new method.  Later on PyList_ methods
crash.  The debugger is showing a refcount of 140737353674481 so something
has gone horribly wrong ...

Roger



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