[Boost-bugs] [Boost C++ Libraries] #1043: last_value<void>::result_type set to last_value<void>::unusable when it could be set to void

Subject: [Boost-bugs] [Boost C++ Libraries] #1043: last_value<void>::result_type set to last_value<void>::unusable when it could be set to void
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2007-06-08 03:22:42

#1043: last_value<void>::result_type set to last_value<void>::unusable when it
could be set to void
------------------------------+---------------------------------------------
 Reporter:  srajko            |       Owner:         
     Type:  Bugs              |      Status:  new    
Milestone:  To Be Determined  |   Component:  signals
  Version:                    |    Severity:  Problem
 Keywords:                    |  
------------------------------+---------------------------------------------
 Currently, last_value<void>::result_type is set to
 last_value<void>::unusable.  On compilers which support void returns, it
 seems like it would be more beneficial to set it to void instead.  I.e.,

   template<>
   struct last_value<void> {
 #ifdef BOOST_NO_VOID_RETURNS
     struct unusable {};

   public:
     typedef unusable result_type;
 #else
   public:
     typedef void result_type;
 #endif // BOOST_NO_VOID_RETURNS

 ...

 Patch attached.

-- 
Ticket URL: <http://svn.boost.org/trac/boost/ticket/1043>
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