Re: [boost] extra semicolons

From: Andy Little (andy_at_[hidden])
Date: 2005-07-19 09:35:32

"David Abrahams" <dave_at_[hidden]> wrote in message 
news:ufyubyn3x.fsf_at_boost-consulting.com...
> "Andy Little" <andy_at_[hidden]> writes:
>
>> "Andy Little" <andy_at_[hidden]> wrote
>>>
>>> "David Abrahams" <dave_at_[hidden]> wrote
>>>> "Andy Little" <andy_at_[hidden]> writes:
>>>
>>>>> FWIW This compiles fine in VC7.1 .  AFAIK there is no C++ rule
>>>>> banning an empty statement in any scope( including namespace scope)
>>>>> where a statement is otherwise allowed.
>>>>
>>>> But that's just it: statements aren't allowed at namespace scope.
>>>
>>> Thats not correct. A declaration-statement is a statement.
>>>
>>> However I assume what you are trying to say is ; if  statements allowed at
>>> namespace scope cannot be empty then by deduction semicolons representing
>>> empty
>>> statements are not permitted at namespace scope.
>>
>> Oops sorry for trying to put words in someone elses mouth.
>
> I didn't mind.  I don't know what I was trying to say.  I obviously
> don't remember how the grammar works; I thought statements
> strictly appeared at function scope.

Actually I now think that you are correct and I am wrong , because statements 
only appear on the rhs of the production within expressions.
Therefore the statement suffix on declaration-statement indicates a declaration 
within an expression,whereas outside it is simply a declaration.
Sorry for the confusion.

Andy Little