c++ - terminate called after throwing an instance of 'std::invalid_argument' what(): dataItem already in tree Abort (core dumped) -

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i'm getting error

terminate called after throwing instance of 'std::invalid_argument'what(): dataitem in tree abort (core dumped)

i've tried , can't think of possibly fix i'm assuming im storing tree when stored have no idea, appreciated below code - use bintree , binnode :

#include <iostream> #include <string> #include <ctype.h> #include <fstream> #include <stdlib.h> #include "bintree.h" #include "binnode.h" using namespace std;  class mazepoint     {   private:   int x;   char pointtype;    public:     void setpointmaze(char ch, int i)    {        pointtype = ch;        x = i;    }     bool operator == (const mazepoint &other) const    {       return(this->x == other.x);    }    bool operator < (const mazepoint &other) const    {       return(this->x < other.x);    } };  class mazerow {    private:    bintree<mazepoint> points;    int y;     public:     void setmazerow(int rownumber)    {       y = rownumber;    }     bool operator==(const mazerow &other) const    {        return(this->y < other.y);    }     bool operator<(const mazerow &other) const    {       return(this->y < other.y);    }     void storepointmaze(char ch, int i)    {       mazepoint point;       point.setpointmaze(ch,i);       points.insert(point);    }     void incrementerow()    {      y++;    } };  void loadmaze(bintree<mazerow> &maze, const char *filein, int argc); int main (int argc, char* argv[]) {    unsigned int  start = 0;    unsigned int  finish = 0;    bintree<mazerow> maze;    string filein;    loadmaze(maze, argv[1], argc);     return 0; }  void loadmaze(bintree<mazerow> &maze, const char *filein, int argc) {     if ( argc < 2) {       cout << "must supply 1 argument program";       exit(0);    }      mazerow row;    ifstream infile(filein);           char temp;    unsigned int = 0;     if (infile.is_open() && infile.good()) {         while (!infile.eof())         {             infile.get(temp);             i++;       row.storepointmaze(temp, i);       if(temp == '\n') ./       {                   maze.insert(row);          row.incrementerow();       }          }     }    else {       cout << "failed open file..";          }    infile.close(); }

thank you

the error message indicates there exception being thrown not caught in code. being thrown in bintree implementation, when try insert element key in?

you can use debugger break @ point exception thrown (in gdb catch throw command) , can inspect why ended in situation.


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