> On Mon, Aug 17, 2009 at 06:18:45PM +0800, Erich Dollansky wrote:
> > On 17 August 2009 pm 18:09:06 cpghost wrote:
> > > On Mon, Aug 17, 2009 at 10:25:29AM +0200, Polytropon wrote:
> > > > By the way, where did I read that #define macro names have to
> > > > be unique within the first 6 (six) letters? :-)
> > >
> > > The 6 letters limit was actually a restriction of earlier
> > > linkers and it affected all identifiers of linkable objects
> > I did not know that linkers resolved macros those days.
> Of course they didn't. But knowing that linkers restricted the
> identifiers' length to 6 chars, it made sense for preprocessors
> to restrict them as well before passing them to the compiler
> and linker.
> Actually, it's a bit more complicated than that, but the basic
> restriction came from the linkers, the preprocessors only inherited
> > Interesting.
> > Erich
Putting the symbol names in one word helped the linker / loader a lot.
Live was so easy.
C (one word = 32 bit) .NOT. (some word processor software)
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