id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
8943	Failed to compile code using boost::call_once with Intel C++ Composer XE 2013 on Windows	abrarov@…	viboes	"Environment:
1. Windows 8 Pro x64 Russian.
2. MS Visual Studio Ultimate 2012 Update 2.
3. Intel C++ Composer XE 2013 (Intel C++ Compiler XE 13.0.0.089 for Windows).

Tried to compile this code:
{{{#!cpp
#if defined(WIN32)
#include <tchar.h>
#endif

#include <cstdlib>
#include <iostream>
#include <boost/thread/once.hpp>

namespace {

class foo
{
public:
  void operator()() const
  {
    std::cout << ""foo"" << std::endl;
  }
}; // class foo

}

#if defined(WIN32)
int _tmain(int /*argc*/, _TCHAR* /*argv*/[])
#else
int main(int /*argc*/, char* /*argv*/[])
#endif
{
  try
  {
    boost::once_flag once_flag = BOOST_ONCE_INIT;
    boost::call_once(once_flag, foo());
    return EXIT_SUCCESS;
  }
  catch (...)
  {
    std::cerr << ""Unknown exception"" << std::endl;
  }
  return EXIT_FAILURE;
}
}}}

Got compiler output with this error:
{{{
>main.cpp(31): error : more than one instance of overloaded function ""boost::call_once"" matches the argument list:
>              function template ""void boost::call_once(boost::once_flag &, Function)""
>              function template ""void boost::call_once(boost::once_flag &, Function &&)""
>              argument types are: (boost::once_flag, <unnamed>::foo)
>        boost::call_once(once_flag, foo());
>        ^
}}}

There is no such error (tested) with: 
* MS Visual C++ 2012 Update 3 (Visual Studio 2012 Update 3 on Windows 8 Pro x64 Rus), 
* Visual C++ 2010 (Visual Studio 2010 on Windows 7 Pro SP1 Rus), 
* Visual C++ 2008 (Visual Studio 2008 on Windows XP Pro SP3 Rus)."	Bugs	closed	Boost 1.55.0	thread	Boost 1.54.0	Problem	fixed