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我正在使用C++上的迭代器,我在这里遇到了一些麻烦.它在行interIterator ++上的表达式(this - > _ Has_container())上说"Debug Assertion Failed".距离列表是向量<vector <DistanceNode >>.我做错了什么？

vector< vector<DistanceNode> >::iterator externIterator = distanceList.begin();

   while (externIterator != distanceList.end()) {

    vector<DistanceNode>::iterator interIterator = externIterator->begin();

        while (interIterator != externIterator->end()){

          if (interIterator->getReference() == tmp){

     //remove element pointed by interIterator
     externIterator->erase(interIterator);             

          } // if
    interIterator++;
  } // while
  externIterator++;
   } // while