[Python-Dev] FW: Fixing os.popen on Win32 => is the win32pipe stuff
going to be adopted?
Thu, 09 Mar 2000 15:42:37 +0100
Trent Mick wrote:
> > architecture(executable='/usr/local/bin/python', bits='',
> > linkage='') :
> > Values that cannot be determined are returned as given by the
> > parameter presets. If bits is given as '', the sizeof(long) is
> > used as indicator for the supported pointer size.
> Just a heads up, using sizeof(long) will not work on forthcoming WIN64
> (LLP64 data model) to determine the supported pointer size. You would want
> to use the 'P' struct format specifier instead, I think (I am speaking in
> relative ignorance). However, the docs say that a PyInt is used to store 'P'
> specified value, which as a C long, will not hold a pointer on LLP64. Hmmmm.
> The keyword perhaps is "forthcoming".
> This is the code in question in platform.py:
> # Use the sizeof(long) as default number of bits if nothing
> # else is given as default.
> if not bits:
> import struct
> bits = str(struct.calcsize('l')*8) + 'bit'
Python < 1.5.2 doesn't support 'P', but anyway, I'll change
those lines according to your suggestion.
Does struct.calcsize('P')*8 return 64 on 64bit-platforms as
it should (probably ;) ?
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