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

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #2642: bug constructing from a reference to another boost::function
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2009-09-02 03:18:23

#2642: bug constructing from a reference to another boost::function
------------------------------+---------------------------------------------
  Reporter:  steven_watanabe  |       Owner:  dgregor 
      Type:  Bugs             |      Status:  closed  
 Milestone:  Boost 1.38.0     |   Component:  function
   Version:  Boost 1.37.0     |    Severity:  Problem 
Resolution:  fixed            |    Keywords:          
------------------------------+---------------------------------------------
Changes (by steven_watanabe):

  * status:  reopened => closed
  * resolution:  => fixed

Comment:

 This behavior is correct.  f2 is not empty.  That what it holds happens to
 be a reference to an empty boost::function is irrelevant.  BTW, before
 1.40, you could get a bad_function_call with

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

 void f() {}

 int main() {
     boost::function<void()> f1(&f);
     boost::function<void()> f2(boost::ref(f1));
     f1.clear();
     if (f2) {
         f2();
     }
 }
 }}}

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/2642#comment:4>
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