id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
13358	boost::process on_exit fails when using multiple processes	david.glesser@…		"
{{{
int main() {
    boost::asio::io_service ios;
    boost::asio::io_service::work working(ios);

    proc::child c1(""/bin/sleep 1"", ios, proc::on_exit=[](int exit, const std::error_code& ec_in){std::cout<<""11111""<<std::endl;});
    proc::child c2(""/bin/sleep 4"", ios, proc::on_exit=[](int exit, const std::error_code& ec_in){std::cout<<""44444""<<std::endl;});
    proc::child c3(""/bin/sleep 2"", ios, proc::on_exit=[](int exit, const std::error_code& ec_in){std::cout<<""22222""<<std::endl;});
    ios.run();

    return 0;
}

}}}

prints

{{{
22222
44444
11111
}}}

while it should prints 11111, 22222 and then 44444. However, 22222 is printed after 1 second, 44444 after 2s, and 11111 after 4s.


The same error happen if you use:

{{{
    boost::process::async_system(ios, [](boost::system::error_code, int){std::cout << ""11111"" << std::endl;}, ""/bin/sleep 1"");
}}}

This was observed on an up-to-date Archlinux (as of 2017-12-22) with gcc 7.2.1 and clang 5.0.0.
"	Bugs	new	To Be Determined	process	Boost 1.65.0	Problem