[Boost-users] asio/ip/udp.hpp causes MSVC to use std::bind

Subject: [Boost-users] asio/ip/udp.hpp causes MSVC to use std::bind
From: Chris Stankevitz (chrisstankevitz_at_[hidden])
Date: 2014-01-29 17:09:38

boost 1.55
VS2012 Update 4

===

Can you tell me why the following code fails to compile?  It smells as
if udp.hpp is causing MSVC to "using namespace std".

PS: It doesn't happen if I remove the asio include.

PPS: It doesn't happen if g() takes int vs std::string.

PPPS: It doesn't happen on GCC

Thank you,

Chris

===

#include <boost/bind.hpp>
#include <boost/asio/ip/udp.hpp>
#include <string>

using boost::bind;

void g(const std::string&)
{
}

int main()
{
  bind(g, _1);
  return 0;
}

===

1>------ Build started: Project: OverlayServer, Configuration: Debug
Win32 ------
1>  main.cpp
1>main.cpp(13): error C2668: 'std::bind' : ambiguous call to overloaded function
1>          c:\program files (x86)\microsoft visual studio
11.0\vc\include\functional(1387): could be
'std::_Bind<_Forced,_Ret,_Fun,_V0_t,_V1_t,_V2_t,_V3_t,_V4_t,_V5_t,<unnamed-symbol>>
std::bind<void,const std::string&,boost::arg<I>&>(_Rx (__cdecl
*)(const std::basic_string<_Elem,_Traits,_Alloc>),_Vx0_t)' [found
using argument-dependent lookup]
1>          with
1>          [
1>              _Forced=true,
1>              _Ret=void,
1>              _Fun=void (__cdecl *const )(const std::string &),
1>              _V0_t=boost::arg<1> &,
1>              _V1_t=std::_Nil,
1>              _V2_t=std::_Nil,
1>              _V3_t=std::_Nil,
1>              _V4_t=std::_Nil,
1>              _V5_t=std::_Nil,
1>              <unnamed-symbol>=std::_Nil,
1>              I=1,
1>              _Rx=void,
1>              _Elem=char,
1>              _Traits=std::char_traits<char>,
1>              _Alloc=std::allocator<char>,
1>              _Vx0_t=boost::arg<1> &
1>          ]
1>          c:\externalpackages\boost_1_55_0\boost\bind\bind_cc.hpp(26):
or       'boost::_bi::bind_t<R,F,L> boost::bind<void,const
std::string&,boost::arg<I>>(R (__cdecl *)(B1),A1)'
1>          with
1>          [
1>              R=void,
1>              F=void (__cdecl *)(const std::string &),
1>              L=boost::_bi::list1<boost::arg<1>>,
1>              I=1,
1>              B1=const std::string &,
1>              A1=boost::arg<1>
1>          ]
1>          while trying to match the argument list
'(overloaded-function, boost::arg<I>)'
1>          with
1>          [
1>              I=1
1>          ]
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========