Re: fun with ?:

[Derek M Jones <derek@knosof.co.uk>]

Neil,

>> BTW, the fun question is whether (int)(1.1) is allowed; the same goes
>> for "is ((void *)0) a null pointer constant".  6.5.1 is sloppy ;-)
> 
> I believe that the intent is that parentheses are not viewed as
> operators,

I suspect that many implementations simply throw them away (or rather
don't bother hanging onto them) in this case, and so work by
'accident'.

>             just a grouping tool, so yes to both.  All implementations
> I'm aware of take that view.

The word 'immediate' in sentence 1318
http://c0x.coding-guidelines.com/6.6.html
"... floating constants that are the immediate operands of casts"
could be interpreted to mean that no other tokens occur between
the cast and its operand.

I suspect that the behavior of existing implementations would be
enough to push any implementation that did not treat (int)(1.1) as
an integer constant into accepting it as such.

-- 
Derek M. Jones                              tel: +44 (0) 1252 520 667
Knowledge Software Ltd                      mailto:derek@knosof.co.uk
Applications Standards Conformance Testing    http://www.knosof.co.uk