On Wed, 25 Mar 2015 08:15:18 +0000 Paul Moore email@example.com wrote:
On 25 March 2015 at 08:05, Maciej Fijalkowski firstname.lastname@example.org 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.