Hi all I have a problem using managed_shared_memory , I can only read strings that has size less that 16 characters. This is my server code ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// #include <boost/interprocess/managed_shared_memory.hpp> #include <utility> #include <iostream> int main () { using namespace boost::interprocess; typedef std::pair<std::string, int> FileState; try{ shared_memory_object::remove("MySharedMemory"); managed_shared_memory segment(create_only, "MySharedMemory", 655360); std::string str1 = "aaaaaaaaaaaaaaabbb";//client can only read <16 sized strings std::string str2 = "baaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"; std::string str3 = "caaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"; std::string *instance1 = segment.construct<std::string>("1")(str1); std::string *instance2 = segment.construct<std::string>("2")(str2); std::string *instance3 = segment.construct<std::string>("3")(str3); while(segment.get_num_named_objects() > 0) std::cout<<"Memory is ready"<<std::endl; } catch(...){ shared_memory_object::remove("MySharedMemory"); throw; } shared_memory_object::remove("MySharedMemory"); return 0; } ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// Here is my client code ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// #include <boost/interprocess/managed_shared_memory.hpp> #include <cstddef> #include <utility> #include <cassert> #include <iostream> #include <fstream> int main (int argc, char *argv[]) { using namespace boost::interprocess; try{ managed_shared_memory segment(open_only, "MySharedMemory"); std::pair<std::string*, std::size_t> res; int a = 1; std::ostringstream oss; oss<<a; res = segment.find<std::string> (const_cast<char*>(oss.str().c_str())); if(res.second != 0) { std::cout<<*(res.first)<<std::endl; segment.destroy<std::string>(const_cast<char*>(oss.str().c_str())); } } catch(...){ shared_memory_object::remove("MySharedMemory"); throw; } shared_memory_object::remove("MySharedMemory"); return 0; } ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// Best Regards