std::_Rb_tree_const_iterator

when I loop a map use for(auto),then crash. Dump Info,

std::_Rb_tree_increment(std::_Rb_tree_node_base const*) () from /lib64/libstdc++.so.6 std::_Rb_tree_const_iterator<std::pair<int const, OTSOrderField> >::operator++.

As this crash which I am getting is not reproducible and the inside code is complex to discuss it here(as calling functions). Can someone suggest to get the same core with the help of sample program for map. It will be very helpful for me to debug that way.