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Wed Mar 25 10:09:10 CET 2015 · https://mail.python.org/pipermail/python-dev/2015-March/138913.html

On Wed, 25 Mar 2015 08:15:18 +0000
Paul Moore <p.f.moore at gmail.com> wrote:
> On 25 March 2015 at 08:05, Maciej Fijalkowski <fijall at gmail.com> wrote:
> > Linux crashes. The mechanism for detecting the number of arguments is
> > only available on windows (note that this is a band-aid anyway, since
> > if your arguments are of the wrong kind you segfault anyway). We do
> > have two copies of libffi one for windows one for unix anyway, don't
> > we?
> 
> Yes, this is in relation to looking at whether we can just use the
> upstream libffi directly on Windows. It looks like we guarantee a
> ValueError for the wrong number of arguments on Windows and upstream
> libffi doesn't give a way to detect that, so there may be a backward
> compatibility issue in doing so.

I'm not sure we guarantee anything. In any case, it's only a small
proportion of the kind of crashes you can get by messing the signature.

Regards

Antoine.

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[Python-Dev] libffi embedded in CPython