Hello, I'm using a map from basic_string to int on managed_mapped_file (boost 1.35.0). Everything works except that I get a compilation error if I use subscript operator. I'm trying something like this: #include <boost/interprocess/managed_mapped_file.hpp> #include <boost/interprocess/containers/map.hpp> #include <boost/interprocess/containers/string.hpp> #include <boost/interprocess/allocators/allocator.hpp> namespace bi = boost::interprocess; typedef bi::allocator<char, bi::managed_mapped_file::segment_manager> char_alloc; typedef bi::basic_string<char, std::char_traits<char>, char_alloc> char_string; typedef std::pair<const char_string, int> ValueType; typedef bi::allocator<ValueType, bi::managed_mapped_file::segment_manager> map_alloc; typedef bi::map<char_string, int, std::less<char_string>, map_alloc> MyMap; int main () { bi::managed_mapped_file segment(bi::open_or_create, "/tmp/test", 65536); map_alloc alloc_inst (segment.get_segment_manager()); MyMap *mymap = segment.find_or_construct<MyMap>("MyMap") (std::less<bi::string>(), alloc_inst); (*mymap)[char_string("key")] = 1; return 0; } What am I doing wrong? Thanks! --Michi