"Grant Edwards" <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED] >I give up, how do I make this not fail under 2.4? > > > fcntl.ioctl(self.dev.fileno(),0xc0047a80,struct.pack("HBB",0x1c,0x00,0x00)) > > I get an OverflowError: long int too large to convert to int > > ioctl() is expecting a 32-bit integer value, and 0xc0047a80 has > the high-order bit set. I'm assuming Python thinks it's a > signed value. How do I tell Python that 0xc0047a80 is an > unsigned 32-bit value?
In 2.3 and before, you get this: >>> 0xc0047a80 -1073448320 In 2.4, positive hex literals are treated as positive numbers, and that is your problem: your literal is greater than the largest int and hence gets stored as long int. I would try -1073448320 as the arg. Terry J. Reedy -- http://mail.python.org/mailman/listinfo/python-list
