[Boost-bugs] [Boost C++ Libraries] #2642: bug constructing from a reference to another boost::function

Subject: [Boost-bugs] [Boost C++ Libraries] #2642: bug constructing from a reference to another boost::function
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2009-01-08 01:52:49

#2642: bug constructing from a reference to another boost::function
-----------------------------+----------------------------------------------
 Reporter:  steven_watanabe  |       Owner:  dgregor 
     Type:  Bugs             |      Status:  new     
Milestone:  Boost 1.38.0     |   Component:  function
  Version:  Boost 1.37.0     |    Severity:  Problem 
 Keywords:                   |  
-----------------------------+----------------------------------------------
 The following code throws a bad_function_call exception
 because the constructor for f2 decides that since f1 is
 empty, f2 ought to be empty as well.

 {{{
 #include <boost/function.hpp>
 #include <boost/ref.hpp>

 void f() {
 }

 int main() {
     boost::function<void()> f1;
     boost::function<void()> f2(boost::ref(f1));
     f1 = f;
     f2();
 }
 }}}

 The attached patch fixes the problem.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/2642>
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