Re: [boost] [concept_check.hpp] unreferenced formal parameter line227

From: Simon Buchan (simon_at_[hidden])
Date: 2005-10-12 22:27:53

Kevin Wheatley wrote:
> Simon Buchan wrote:
> 
>>That works fine everywhere. It's similar to (void)0, which is a popular
>>way to say "do nothing".
> 
> 
> In that file (and else where) there are specific calls to the
> boost::ignore_unused_variable_warning() mechanism. I wondered if there
> was a good reason it wasn't done in this case, before assuming it will
> just work.
> 
> Kevin

ignore_unused_variable_warning is defined in workaround.hpp, so I may be 
wrong that void casting stops the warning everywhere.  (usage warnings 
are pretty fiddly).  However, that method works by not giving the 
parameter a name, which I seem to remember getting warnings for in some 
compilers. (some versions of GCC?)