[Boost-bugs] [Boost C++ Libraries] #1097: keyword.hpp generates many warnings C4180: qualifier applied to function type has no meaning; ignored

Subject: [Boost-bugs] [Boost C++ Libraries] #1097: keyword.hpp generates many warnings C4180: qualifier applied to function type has no meaning; ignored
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2007-07-18 16:44:25

#1097: keyword.hpp generates many warnings C4180: qualifier applied to function
type has no meaning; ignored
-------------------------------------+--------------------------------------
 Reporter:  pbristow                 |       Owner:  danielw  
     Type:  Bugs                     |      Status:  new      
Milestone:  To Be Determined         |   Component:  parameter
  Version:  release 1.34.0           |    Severity:  Problem  
 Keywords:  parameter keyword c4180  |  
-------------------------------------+--------------------------------------
 KEYWORD_050328_HPP

 template <class Tag>
 struct keyword
 {
     template <class T>
     typename aux::tag<Tag, T>::type const
                                    ^^^^^^^^^ this const is said to be
 meaningless

 and could be commented out.

     operator=(T& x) const
     {
         typedef typename aux::tag<Tag, T>::type result;
         return result(x);
     }

 there are several others similar.

 This creates a blizzard of warnings, even at normal warning level 3. (4180
 is a level 1 warning).

 #ifdef _MSC_VER
 #  pragma warning(disable: 4127) // conditional expression is constant.
 #  pragma warning(disable: 4512) // assignment operator could not be
 generated.
 #  pragma warning(disable: 4180) // qualifier applied to function type has
 no meaning; ignored
 #endif

 produced a quiet compilation.

 So I suggest either commenting out the const,

 AND push the above disables, and popping at the end.

-- 
Ticket URL: <http://svn.boost.org/trac/boost/ticket/1097>
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