Re: [Numpy-discussion] [OT] Can anybody else reproduce this ? (but in ctypes)

[Robert K. <rob...@gm...>]

David Cournapeau wrote:
> Hi,
> 
>     This is a bit OT, but I wasted quite some time on this time, when 
> using 64 bits integers and ctypes on ubuntu edgy. As I know other people 
> use ubuntu with numpy, this may save some headache to others. I found 
> this behaviour which looks like a bug in ctypes for python2.5 on edgy 
> ubuntu:
> 
>     python2.5 -c "from ctypes import sizeof, c_longlong; print 
> sizeof(c_longlong)"
> 
>     prints 4 instead of 8, which in my case is problematic for 
> structures alignement. This affects only python2.5, and does not affect 
> a python installed from sources. Can anybody else reproduce this ?

Can you try a similar program in C compiled with the same C compiler that you
used to build ctypes? sizeof(long long) does not have to be 8 bytes; it just has
to be at least as large as sizeof(long).

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
 that is made terrible by our own mad attempt to interpret it as though it had
 an underlying truth."
  -- Umberto Eco