c++ - cloud 9 execute thread -

i running code in c++ on c9 , getting error:

terminate called after throwing instance of 'std::system_error' what(): enable multithreading use std::thread: operation not permitted. 

although file compile after adding command line -wl,--no-as-needed , -lpthread, run function on cloud 9 still response same error

` try run on bash , it's working still want run regular run function(known f5) able use debugger

here example of code:

#include <iostream>       #include <thread>           void foo()  {   // stuff... }  void bar(int x) {   // stuff... }  int main()  {   std::thread first (foo);     // spawn new thread calls foo()   std::thread second (bar,0);  // spawn new thread calls bar(0)    std::cout << "main, foo , bar execute concurrently...\n";    // synchronize threads:   first.join();                // pauses until first finishes   second.join();               // pauses until second finishes    std::cout << "foo , bar completed.\n";    return 0; }