[Boost-bugs] [Boost C++ Libraries] #6543: identity_property_map is not overloaded for any key type

Subject: [Boost-bugs] [Boost C++ Libraries] #6543: identity_property_map is not overloaded for any key type
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2012-02-10 14:31:47

#6543: identity_property_map is not overloaded for any key type
-------------------------------------------------+--------------------------
 Reporter:  Alex Hagen-Zanker <ahh34@…>          |        Type:  Bugs            
   Status:  new                                  |   Milestone:  To Be Determined
Component:  None                                 |     Version:  Boost 1.48.0    
 Severity:  Problem                              |    Keywords:                  
-------------------------------------------------+--------------------------
 The following assertion fails, because a is first cast to size_t and then
 to double. Leaving us with a = 0.5 and b = 0.0

   boost::identity_property_map identity;
   double a = 0.5;
   double b = get(identity, a);
   assert(a==b);

 I am submitting a patch that introduces (reinstates?) the overloads that
 are promised in the documentation.

 The patch contains an additional property map: identity_ref_property_map,
 which is a identity_property_map that returns a reference to the key,
 instead of a copy of the key.

 Including that struct is up to your discretion, it is not really part of
 the patch.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/6543>
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