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Re: x86_64 updates: msg#00317
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Subject: |
Re: x86_64 updates |
On Tue, Jan 27, 2004 at 08:59:31AM -0500, Gene C. wrote:
>
> So far my experience in trying to port some software (which is also designed
> to run on MS Windows) has proved to be a real learning experience. This is
> especially true for the "long" variable which is 4 bytes on 32 bit systems, 8
> bytes on 64 bit *nix and Linux systems, and 4 bytes on MS Windows 64 bit
> systems.
For some of us who were using Alpha and other 64-bit processors
this experience is some decade long or something like that. This
detail that Red Hat had Alpha and SPARC distribution for quite a
while is not without a significance in that that 64-bit user space
on x86_64 basically "just works". Personally I run into the issue
even earlier. "Natural" sizes on Atari ST with MC68000 were 2
for sizeof(int) and 4 for longs and pointers.
It is indeed PITA that many were able to forget what they were
hopefuly told in an introductory C programming class. Historically
this is known as "all the world is VAX" syndrome so the problem
is far from beeing new. :-)
Michal
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