MESSAGE
| DATE | 2011-06-11 |
| FROM | Ruben Safir
|
| SUBJECT | Subject: [NYLXS - HANGOUT] (fwd) Re: Using sizeof in the preprocessor
|
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From: Alain Ketterlin
Newsgroups: comp.lang.c++
Subject: Re: Using sizeof in the preprocessor
Date: Sat, 21 May 2011 21:54:51 +0200
Organization: Universites Paris VI/Paris VII - France
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Xref: panix comp.lang.c++:1085129
Juha Nieminen writes:
> Huibert Bol wrote:
>> Identifiers in #if expressions are evaluated as zero
>
> It seems that at least with gcc "#if true" and "#if false" work as one
> would expect. Is this standard?
Funny idea. Here (gcc/g++ 4.4.4), gcc and g++ both with -E give
different results on the following input:
#if true
#error "then"
#else
#error "else"
#endif
-- Alain.
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