Re: [boost] reverse_iterator.hpp uploaded

From: Howard Hinnant (hinnant_at_[hidden])
Date: 2000-06-10 09:35:58

David Abrahams wrote on 6/10/2000 1:07 AM
>CodeWarrior rejected the test because it seems to instantiate unused
>operators. I can't tell whether this is a bug in the compiler or in my code,
>though.

I'm having trouble accessing www.boost.org this morning so I'm not sure I 
have an up-to-date test.  But the first trouble I'm having with your test 
is:

Error   : declaration syntax error
reverse_iterator.hpp line 77       Self& operator+=(difference_type n) {

Don't know if this is the error you're referring to or not (pasting in 
error messages helps immensely).

The error message looks correct to me.  difference_type is undefined.  
This error is allowed to be detected even if operator+= is not 
instantiated (14.6/7 and 14.6.3/1).  Detecting errors as early as 
possible in templates is a desired quality (we're still trying to improve 
on this ourselves).  It is an error because the base class scope is not 
examined during name lookup until the class template is instantiated 
(14.6.2/3).

If this isn't the error you're having trouble with could you please send 
me a complete test and the error message it is causing?

Thanks,
-Howard