[Python-Dev] Optimization of the Year

[Hye-Shik Chang]

On Tue, Feb 10, 2004 at 06:25:18PM +0100, Anders J. Munch wrote:
> From: "Guido van Rossum" <guido at python.org>
> > 
> > If in 3rd party code, that code is simply wrong.
> > 
> > If indeed such 3rd party code exists, and we expect we can't get it
> > all fixed before 2.4 is released, the tracked_item hack can be used as
> > a temporary measure to hunt down all those 3rd party extensions that
> > break the abstraction.  I propose to issue a warning when it is
> > discovered that ob_item != tracked_item.  Then in 2.5 we can remove
> > the tracked_item feature.
> 
> There is a simpler way to make sure all clients that illicitly use
> ob_item are updated appropriately: Break the build by renaming.  If
> ob_item is renamed to ob_items or ob_item2 or whatever, any code that
> uses the old name will cease to compile.
> 

Something like this?

typedef struct {
    PyObject_VAR_HEAD
#ifdef Py_BUILD_CORE
    PyObject **ob_item;
#else
    PyObject **__ob_item;
#endif
};


Hye-Shik