#include <boost/process/all.hpp> 
#include <string> 
#include <vector> 
#include <cstdlib> 
#include <unistd.h> 

namespace bp = boost::process; 
namespace bpb = boost::process::behavior; 

int main() 
{ 
    std::string exe = "/home/boost/boost_1_43_0/bin.v2/libs/process/test/gcc-4.2.1/debug/helpers"; 

    std::vector<std::string> args; 
    args.push_back("echo-stdout-stderr"); 
    args.push_back("message-to-two-streams"); 

    bp::context ctx; 

    // File descriptors must be closed after context is instantiated as the 
    // context constructor uses the behavior inherit which tries to dup() 
    // stdin, stdout and stderr. 
    for (int i = 0; i < 100; ++i) 
        close(i); 

    ctx.stdout_behavior = bpb::pipe::create(bpb::pipe::output_stream); 
    ctx.stderr_behavior = bpb::pipe::create(bpb::pipe::output_stream); 

    bp::child c = bp::create_child(exe, args, ctx); 

    std::string out, err, word1, word2; 
    bp::pistream &isout = c.get_stdout(); 
    isout >> out >> word1; // stdout message-to-two-streams 
    bp::pistream &iserr = c.get_stderr(); 
    iserr >> err >> word2; // stderr message-to-two-streams 

    c.wait(); 

    if (out == err) 
        return EXIT_FAILURE; 
    if (word1 != word2) 
        return EXIT_FAILURE; 
    if (isout.handle().native() == iserr.handle().native()) 
        return EXIT_FAILURE; 
}