c++ - Segmentation fault (core dumped) error occurred -


i keep getting segmentation fault (core dumped) error. program runs fine first line of code though, don't know why messes on second line. line of code causes problem xxml->setelementdata(selementname, scontent) one. or direction of problem appreciated!

#incude <iostream> void parseelement(istream & input, string sprefix, vector<xmlserializable*> & vvector, map<string, function<xmlserializable*()>>& mmap) {  xmlserializable * xxml; string selementname; getline(input, selementname, '>');  if( selementname.back() == '/' ) {     cout << sprefix << "empty element: " << selementname << endl;     return; } else {     cout << sprefix << "element - " << selementname << endl;     if (selementname == "item")     {         function<xmlserializable*()> pfuncitem = mmap["item"];         xxml = pfuncitem();         vvector.push_back(xxml);     }     if (selementname == "weapon")     {         function<xmlserializable*()> pfuncweapon = mmap["weapon"];         xxml = pfuncweapon();         vvector.push_back(xxml);     }     if (selementname == "armor")     {         function<xmlserializable*()> pfuncarmor = mmap["armor"];         xxml = pfuncarmor();         vvector.push_back(xxml);     }     if (selementname == "creature")     {         function<xmlserializable*()> pfunccreature = mmap["creature"];         xxml = pfunccreature();         vvector.push_back(xxml);     } }  string scontent = "";   while( true ) {      char c = input.get();      while( c != '<' )     {         if( c != '\n' )             scontent.push_back(c);          c = input.get();     }      if( input.peek() == '/' )     {         input.get();         string sendelement;         getline(input, sendelement, '>');          if( sendelement != selementname )             cout << "bad xml found" << endl;          cout << sprefix << "content - " << scontent << endl;          xxml ->setelementdata(selementname, scontent);                   return;     }     else     {         parseelement(input, sprefix + "  ", vvector, mmap);     }  } }


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