Re: Newbie: C++ Frontend Lexical Analysis Issue, <::abs(n) does notparse

[Thierry Moreau <thierry dot moreau at connotech dot com>]

Zack Weinberg wrote:

> Thierry Moreau <thierry.moreau@connotech.com> writes:
>
>  
>
> > The following sample fails to compile by GCC, and I am surprised:
> >    
>
> ...
>  
>
> > {    return ::abs(m)<::abs(n); } /* parse error here (!) */
> >    
>
> When the two characters <: appear next to each other like this, it is
> taken as an alternate spelling ("digraph") for a [ token.  The point
> of this is to make it easier to write C on the (rare) platforms which
> do not have an [ character.  This is an awkward feature but the
> language standard requires it.
>
> Inserting a space is the correct fix.
>  
Agreed, thanks for your explanation.

> > Please excuse my reluctance to file an official bug report in
> > another problem reporting service.
> >    
>
> Huh?  Is there a problem with our bug tracking system?
>  
No,  I just was not shure if it was a bug in the first  place, and I 
wanted someone more knowledgeable to file an official bug report if need be.

I certainly didn't intend to fill a *bug* report while I was to learn 
that the digraph feature is part of the C language definition since the 
first amendment to ANSI C:1989 (I somehow antcipated some valid explanation)

Regards,

--

- Thierry Moreau

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