[Bf-committers] LLP64 / LP64 (win64 vs rest) issue

[Nathan Letwory]

For (future) reference:
http://msdn.microsoft.com/en-us/library/aa384242(VS.85).aspx and so people
can read up on it.

/Nathan

On Sun, Jul 27, 2008 at 1:05 PM, Daniel Genrich <daniel.genrich at gmx.net>wrote:

> Hi there,
>
> In an attempt to create a Windows 64bit version, Blender needs an
> official way to deal with the fact that:
>
> long is 32bit on Win64 (LP64)
> long is 64bit on Linux64/Mac64 (LLP64)
>
>
> So the whole long-pointer casting is kind of going wrong on Win64 and
> therefore crashing Blender.
>
> As a proposal I suggest not to use "long" but to introduce the C99/C9X
> standard type "uintptr_t" which is already used in many header of the
> libs which Blender uses (ffmpeg, python, X264, SDL). This type would
> allow instant pointer fiddling and cross plattform compatibility between
> LLP64 and LP64 plattforms.
>
> I would also search-replace the existing "long"s in Blender.
>
> The goal for this is post-2.47 so we can test it on several plattforms
> and harden it a bit (e.g. some older compilers don't define that
> uintptr_t type).
>
> Any comments / suggestions?
>
> Greetings
> Daniel / Genscher
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