[python-committers] Adding a hidden field to BaseException going to break the ABI?

[Brett Cannon]

On Sun, Sep 13, 2009 at 13:30, Benjamin Peterson <benjamin at python.org> wrote:
> 2009/9/13 Brett Cannon <brett at python.org>:
>> issue6844 wants to stop a warning from being raised when someone
>> accesses a 'message' attribute on an exception when it is set by the
>> user (currently any usage of the 'message' attribute raises a
>> warning). To do this properly is going to require some state flag on
>> BaseException's struct. But I don't know if that constitutes breaking
>> the ABI during a micro release or not. I figure no but I wanted to
>> double-check.
>
> Is the BaseException struct public?

Only in so far as PyExc_BaseException is documented for use with
PyErr_*() and inheritance.

-Brett