ifstream >> reading same line over again - c++

Question

I'm trying to read in formatted hex data into unsigned ints using the >> operator. The code I'm using is
#include <iostream>
#include <fstream>
int main(int argc, char** argv)
{
ifstream in(argv[1]);
unsigned int addr;
unsigned int op;
unsigned int data;
do
{
in >> hex >> addr >> hex >> op >> hex >> data;
cout << addr << " " << op << " " << data << '\n';
if (in.eof()) break;
} while(1);
return 0;
}
This works on a 300 line file just fine, but when I try it on a different file, it reads the 5th line repeatedly then seg faults, and I cannot figure out why. The first five lines are
FD2C FF EB
4FE9 FF 32
276E FF 6E
5C09 FF A3
7739 FF 36
The offending line is
7739 FF 36
Any help is appreciated. Thanks!
Edit:
I modified my code so it looks like
#include <iostream>
#include <fstream>
int main(int argc, char** argv)
{
ifstream in(argv[1]);
unsigned int addr;
unsigned int op;
unsigned int data;
while (in >> hex >> addr >> hex >> op >> hex >> data)
{
cout << addr << " " << op << " " << data << '\n';
}
return 0;
}
This solves the problem of reading the 5th line over and over again but it still segfaults, albeit on another line. I'm going to look further and see if I can pin it down.

Answer 1

FF is new page symbol and then it is followed by a dollar sign $ which is 36, maybe it thinks that 36 is a pointer to something. try to change unsigned int to unsigned char.
EDIT: this reads everything in without problems and output is in hex values good luck.
#include <iostream>
#include <fstream>
int main(int argc, char** argv)
{
std::ifstream in; in.open("tst.tst",std::ios::in);
unsigned char addr;
unsigned char op;
unsigned char data;
while (in >>std::hex>> addr>>std::hex>> op>>std::hex>> data)
{
std::cout << (int)addr <<std::hex << " " << (int)op<<std::hex << " " << (int)data<<std::hex<< "\n";
}
return 0;
}