[Boost-bugs] [Boost C++ Libraries] #11902: bind placeholder _1 is not defined

Subject: [Boost-bugs] [Boost C++ Libraries] #11902: bind placeholder _1 is not defined
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2016-01-11 12:08:47

#11902: bind placeholder _1 is not defined
--------------------------+------------------------------
 Reporter:  zimmermann@…  |       Type:  Bugs
   Status:  new           |  Milestone:  To Be Determined
Component:  None          |    Version:  Boost 1.60.0
 Severity:  Problem       |   Keywords:
--------------------------+------------------------------
 bind placeholder _1 is not defined in version 1.60.0 .

 Example
 {{{
 #include <boost/bind/bind.hpp>

 int f(int a, int b) { return a + b; }

 int main(void)
 {
   int x = 1;
   int a = boost::bind(f, 5, _1)(x);

  return 0;
 }
 }}}

 Compiler output:
 {{{
 bind_error.cpp: In function ‘int main()’:
 bind_error.cpp:11:29: error: ‘_1’ was not declared in this scope
    int a = boost::bind(f, 5, _1)(x);
                              ^
 bind_error.cpp:11:29: note: suggested alternative:
 In file included from
 /home/projekte/libwinforwiss/boost/boost_1_60_0/boost/bind/bind.hpp:2247:0,
                  from bind_error.cpp:1:
 /home/projekte/libwinforwiss/boost/boost_1_60_0/boost/bind/placeholders.hpp:46:38:
 note:   ‘boost::placeholders::_1’
  BOOST_STATIC_CONSTEXPR boost::arg<1> _1;
 }}}

 Replacing  _1  with  boost::placeholders::_1  works for 1.60.0 , but not
 for 1.59.0.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/11902>
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