Re: [Boost-bugs] [Boost C++ Libraries] #2072: Default named parameters in the graph library can not be used with external adaptet graph libraries

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #2072: Default named parameters in the graph library can not be used with external adaptet graph libraries
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2008-07-06 18:33:37

#2072: Default named parameters in the graph library can not be used with external
adaptet graph libraries
-----------------------------------------+----------------------------------
  Reporter:  laszlo.szakony_at_[hidden]  |       Owner:  dgregor 
      Type:  Bugs                        |      Status:  assigned
 Milestone:  Boost 1.37.0                |   Component:  graph   
   Version:  Boost 1.35.0                |    Severity:  Problem 
Resolution:                              |    Keywords:          
-----------------------------------------+----------------------------------
Changes (by dgregor):

  * status:  new => assigned
  * milestone:  Boost 1.36.0 => Boost 1.37.0

Comment:

 This is definitely a bug, but the fix isn't to use graph_traits. Rather,
 we need to avoid getting into this part of the code that attempts to look
 at graph_tag. The general fix is to not define a primary property_map
 template that looks into the graph type itself unless we know that
 graph_tag will be there.

 The workaround is to define a partial specialization of
 boost::property_map for your graph type, so that the primary property_map
 template is never used (and, therefore, we don't end up looking for
 graph_tag).

-- 
Ticket URL: <http://svn.boost.org/trac/boost/ticket/2072#comment:1>
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