Re: [Boost-bugs] [Boost C++ Libraries] #13632: boost::function operator== is bugged on FreeBSD 11.2

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #13632: boost::function operator== is bugged on FreeBSD 11.2
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2018-07-15 16:28:36

#13632: boost::function operator== is bugged on FreeBSD 11.2
-------------------------------+----------------------------
  Reporter:  hongli@…          |      Owner:  Douglas Gregor
      Type:  Bugs              |     Status:  new
 Milestone:  To Be Determined  |  Component:  function
   Version:  Boost 1.67.0      |   Severity:  Problem
Resolution:                    |   Keywords:
-------------------------------+----------------------------

Comment (by anonymous):

 Important update. It was discovered that FreeBSD 11.2, as well as recent
 versions of OpenBSD, promote `NULL` to `nullptr`. Comparing an empty
 boost::function with 0 results in true, but comparing it with nullptr
 results in false:

 {{{
 boost::function<void ()> f;
 printf("is nullptr: %d\n", f == nullptr);
 printf("is 0: %d\n", f == 0);
 }}}

 This prints 0 and 1, respectively.

 Is this behavior intentional? Are we supposed to be able to compare
 boost::function with nullptr? Intuitively I would expect `== 0` and `==
 nullptr` to behave the same.

-- 
Ticket URL: <https://svn.boost.org/trac10/ticket/13632#comment:2>
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