[Boost-bugs] [Boost C++ Libraries] #4173: bind/placeholders.hpp workaround for multiply defined anon namespace broken in gcc 4..1

Subject: [Boost-bugs] [Boost C++ Libraries] #4173: bind/placeholders.hpp workaround for multiply defined anon namespace broken in gcc 4..1
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2010-04-30 21:50:51

#4173: bind/placeholders.hpp workaround for multiply defined anon namespace broken
in gcc 4..1
--------------------------------+-------------------------------------------
 Reporter:  joequant@…          |       Owner:  pdimov 
     Type:  Bugs                |      Status:  new    
Milestone:  Boost 1.43.0        |   Component:  bind   
  Version:  Boost 1.39.0        |    Severity:  Problem
 Keywords:                      |  
--------------------------------+-------------------------------------------
 in bind/placeholders.hpp there is a workaround for compiled headers
 sharing anonymous name space information causing multiply defined errors
 with placeholders

 see http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29085


 Unfortunately the ifdef for activating the workaround  in
 boost/bind/placeholders.hpp is incorrect as the bug was fixed in gcc 4.2
 and still exists in gcc 4.1

 The check
     defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__ == 400)

 should be replaced with
     defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__ < 420)

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/4173>
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