"John Anthony Kazos Jr." <jkazos@vt.edu> writes:
> Since when do compilers as a rule obey the standard?
what if you write
x = 3;
and this sets x to 2?
at some point you have to depend on the compiler actually implementing
the language it purports to do. depending upon the && short circuit
isn't obscure -- it's well defined and it's commonly used. all C
compilers get this right or their users complain *loudly*. this is a
basic semantic functionality that many programs depend upon.
> I'm not bashing
> gcc (though I *am* bashing Micro$oft and most others) because gcc's
> problems are due to its nature as open software (i.e., no one's
> paying the developers, so they have to do it when they have
> time). Relying on standards having been followed with an open
> software product is foolish, and doing so with a closed software
> product is inane.
the kernel *requires* gcc. many other things in the kernel code
really are non-standard and depend on gcc extensions. therefore, we
need not concern ourselves with what some hypothetical broken compiler
might do with it.
> >On Wed, 3 May 2000, Cesar Eduardo Barros wrote:
> >
> >> while ((mm->swap_cnt << 2 * (i + 1) < max_cnt) && i++ < 10)
> >> /* nothing */;
> >>
> >> I'm not that good at C, mas aren't expressions with side-effects
> >> ill-defined? How can we be sure (short of tracking the gcc
> >> mailing lists) that i will be incremented after the left part of
> >> the test?
> >
> >Because it is defined in the C standard?
> >
> >Rik
> >--
> >The Internet is not a network of computers. It is a network
> >of people. That is its real strength.
> >
> >Wanna talk about the kernel? irc.openprojects.net / #kernelnewbies
> >http://www.conectiva.com/ http://www.surriel.com/
> >
> >
> >-
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>
>
>
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-- J o h a n K u l l s t a m [kullstam@ne.mediaone.net] Don't Fear the Penguin!- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/
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