Ticket #6277: cb.cpp

// Demonstrates bug in boost::cb_details::debug_iterator_registry
// The copy constructor of boost::circular_buffer appears to not be threadsafe
// due to lack of thread safety in boost::cb_details::debug_iterator_registry.
// Compile command: g++ cb.cpp -lboost_thread

// Add this line to remove seg fault:
// #define BOOST_CB_DISABLE_DEBUG

#include <boost/thread.hpp>
#include <boost/circular_buffer.hpp>

boost::circular_buffer<char> data(4096);

void thread_fn()
{
        while(1)
        {
                boost::circular_buffer<char> c(data);   // Seg fault in here
        }
}

int main()
{
        boost::thread t1(thread_fn);
        thread_fn();
}