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 04:53:38

#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:          
------------------------------+---------------------------------------------

Comment(by Yusaku Sugai <sugai@…>):

 I understand that in a sense f2 is not empty.[[BR]]
 I expected that[[BR]]
  f.empty() is false => It's OK to call f().[[BR]]
  f.empty() is true => It's not OK to call f().[[BR]]
 But it is not what empty()-ness means in function library, right?[[BR]]

 Is there any way to know in advance whether it is OK to call a function
 object or not?[[BR]]
 Do I have to just try calling it and be ready for bad_function_call
 exception?

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/2642#comment:5>
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