id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
11902	bind placeholder _1 is not defined	zimmermann@…	Peter Dimov	"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.
"	Bugs	new	To Be Determined	bind	Boost 1.60.0	Problem