http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55471
--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> 2012-11-26
19:23:22 UTC ---
If you change the code to join the threads instead of leaving them running when
the program exits then the output is correct.
#include <iostream>
#include <mutex>
#include <thread>
#include <atomic>
std::mutex m;
int main()
{
const unsigned N = 10;
std::atomic<bool> run(true);
std::thread t[N];
for(unsigned i = 0; i < N; ++i)
t[i] = std::thread([&]()
{
while(run)
{
m.lock();
std::cout << "[" << std::this_thread::get_id() << "]: ";
for(unsigned i = 0; i < 10; ++i)
std::cout << i;
std::cout << std::endl;
m.unlock();
}
});
std::this_thread::sleep_for(std::chrono::seconds(1));
run = false;
for(unsigned i = 0; i < N; ++i)
t[i].join();
}
