Hi all, I meet a problem with some code with boost and want to ask for some help here. To the following code: #include <list> using namespace std; #include "boost/function.hpp" #include "boost/foreach.hpp" #include "boost/bind.hpp" using namespace boost; void InsertItemHelper(list<int>& inContainer, list<int>::iterator& ioPosition, const list<int>::value_type& inItem) { ioPosition = inContainer.insert(ioPosition, inItem); } void WorkerFunction(const list<int>& inContainer, boost::function<void(int)> const& inAddItemCallback) { BOOST_FOREACH(auto item, inContainer) { inAddItemCallback(item); } } void Print(const list<int>& inContainer) { BOOST_FOREACH(auto item, inContainer) { std::cout << item << endl; } } int main() { list<int> sourceContainer; sourceContainer.push_back(1); sourceContainer.push_back(2); sourceContainer.push_back(3); list<int> targetContainer; list<int>::iterator pos = targetContainer.end(); boost::function<void(int)> addItemCallbackFxn(boost::bind(& InsertItemHelper, targetContainer, pos, _1)); WorkerFunction(sourceContainer, addItemCallbackFxn); return 0; } When I run it on Windows with VS2012, I always get a “list insert iterator outside range” error with: inContainer.insert(ioPosition, inItem); It seems targetContainer I passed to boost::bind is copied so that the following debug error of STL is hit: #if _HAS_ITERATOR_DEBUGGING if (_Where._Mycont != this) _DEBUG_ERROR("list insert iterator outside range"); #endif /* _HAS_ITERATOR_DEBUGGING */ But I am passing targetContainer as a reference and after the error, I can correctly get data in it. Does anybody know what’s wrong behind? Thanks, BD