Re: Static assertions

["Jean-Pierre Rosen" <rosen@adalog.fr>]

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"Aaro Koskinen" <aaro@iki.fi> a �crit dans le message news:
pdx7kzd3fdb.fsf@sirppi.helsinki.fi...
> "Jean-Pierre Rosen" <rosen@adalog.fr> writes:
> > Still discovering how powerful Ada is...
> >
> > Imagine your program relies on Integer having a certain size, or being
sure
> > that the size of Integer is four times the size of character, or things
like
> > that, and you want to make sure that the program does not even compile
if
> > the assertions do not hold (because you hate fighting with a debugger).
This
> > is possible, since a static expression that raises constraint_error will
not
> > compile.
>
> I have been using a similar method in C. I have an assert macro, which
> declares a const int with the value "1 / <static boolean expression>".
> If the assertion does not hold, it evaluates to 0, and the code will
> not compile.
>
Out of curiosity... Is this *required* by the C standard ?

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           J-P. Rosen (rosen@adalog.fr)
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