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From: ohk@tfdt-o.nta.no (Ole-Hjalmar Kristensen FOU.TD/DELAB)
Subject: Re: Porting (was ADA and Pascal etc)
Date: 1997/10/31
Message-ID: <umqoh46jhof.fsf@fabula4-atm.nta.no>#1/1
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Organization: Telenor Online Public Access
Newsgroups: comp.lang.ada,comp.lang.c
Date: 1997-10-31T00:00:00+00:00
List-Id: <comp.lang.ada>


Alan E & Carmel J Brain <aebrain@dynamite.com.au> writes:

> Craig Franck wrote:
> > 
> > Jon S Anthony <jsa@synquiry.com> wrote:
> > >Alan E & Carmel J Brain <aebrain@dynamite.com.au> writes:
> > >
> > >> C and C++ compilers differ by so much that porting is often a Nightmare.
> > >> Before I get flamed, I'd like to talk to people who've actually ported
> > >> code cross-platform.
> > >
> > >That's about right.  Porting anything of substance written in C even
> > >between compilers on the _same_ platform is depressing.  FOE here...
> > 
> > Sounds like you may have been a victim of the run of your patients.
> > Well written C code is very portable. I've seen compiler upgrades
> > break code, but only because it was trash to begin with.
> 
> May I respectfully offer a counterexample?
> Code Warrior accepts
> 
> void Main()
> {
>   for (int i ; i < SomeValue ; i++ )
>   {
>   // Do something
>   }
> 
>   for (int i ; i < SomeOtherValue ; i++ )
>   {
>   // Do something else
>   }
> }
> 
> As by one reading of the (yet-to-be-standardised C++ spec) the scope of
> each
> i is limited to reside within the parens {} of each loop.
> 
> Yet MVC++ 5 barfs: as the scope of i is deemed to be within the main
> program, so the two int i declarations clash.
> 
> I do not consider the above code to be "trash". If you do, please
> elucidate as to why (heck, I could be wrong, have been before, will be
> again)

Note that he says C code, not C++. 

<stuff deleted>


> aebrain@dynamite.com.au     <> <>    How doth the little Crocodile
> | Alan & Carmel Brain|      xxxxx       Improve his shining tail?
> | Canberra Australia |  xxxxxHxHxxxxxx _MMMMMMMMM_MMMMMMMMM
>  abrain@cs.adfa.oz.au  o OO*O^^^^O*OO o oo     oo oo     oo  
>                     By pulling MAERKLIN Wagons, in 1/220 Scale