I'd suggest running w/ -X:ExceptionDetail and sending back the stack trace that you get as that'll tell us where the exception is coming from.
> -----Original Message----- > From: ironpython-users-bounces+dinov=microsoft....@python.org > [mailto:ironpython-users-bounces+dinov=microsoft....@python.org] On > Behalf Of m...@sysfault.org > Sent: Friday, April 20, 2012 6:46 AM > To: ironpython-users@python.org > Subject: [Ironpython-users] ctypes module in version 2.7.2 can't create Union > values > > Dear all, > > on a 64-bit Windows 7 machine (other platforms untested), I find myself unable > to create a ctypes.Union-based class wrapper for a C type. > Regardless of what kind of Union I create, it always ends up with a "object > reference not set to an instance of an object" error from .NET. Find below a > brief command line example including the necessary .NET and IronPython > information. > > IronPython 2.7.2.1 (2.7.0.40) on .NET 4.0.30319.261 (32-bit) Type "help", > "copyright", "credits" or "license" for more information. > >>> from ctypes import * > >>> class foo(Union): > ... _fields_ = [("t", c_uint), ("b", c_float)] > ... > >>> bar = foo() > >>> bar.t = 1 > Traceback (most recent call last): > File "<stdin>", line 1, in <module> > SystemError: Object reference not set to an instance of an object. > > I'm not subscribed to this list, in case you require more information please > keep > me in CC. > > Regards > Marcus > > _______________________________________________ > Ironpython-users mailing list > Ironpython-users@python.org > http://mail.python.org/mailman/listinfo/ironpython-users > > _______________________________________________ Ironpython-users mailing list Ironpython-users@python.org http://mail.python.org/mailman/listinfo/ironpython-users
