Question

I want to generate a symbol table from a SIC Assembly code. For that I have tried to separate every strings form the assembly code.
Hence while attempting first step for that, I tried this code.

Here,
What I have tried is to read the assembly code form a file line by line. And then to separate the strings in the line to tokens.

When I remove the token separation section (as mentioned in the code) I am getting all lines printed as expected.
But If I run along with token separation, the first line is getting read and the tokens are separated as I expected. But for the second line I am getting error as segmentation fault.
I couldn’t trace where I went wrong.

So, I need explanations form experts.

Thanks in advance.

 FILE* sourceCode =  fopen("/home/muthu/LangFiles/SIC/PASS1/PROGRAM.txt","r");
  if(checkForFileOpeningErrors() == ERROR)  //Iam using separate function
      return EXIT_FAILURE;  //Terminate the program.
  int maxLineLength = 50;
  while(1)
  {
           char* lineReader = NULL;  // since getline will reallocate.
       if( getline(&lineReader,(size_t*)&maxLineLength,sourceCode) == -1 )
           break;
       printf("%s",lineReader);

// TOKEN SEPARATION STARTS HERE....   If I comment this section out iam getting all lines printed 
            char* wordReader;
      wordReader = strtok(lineReader," \n");
      printf("%s\n",wordReader);
      while(1)
      {
           wordReader = strtok(NULL," \n");
           printf("%s\n",wordReader);
      }
// TOKEN SEPARATION ENDS HERE....
  }

My FILE:

COPY START 1000  
FIRST STL RETADR 
CLOOP JSUB RDREC  
LDA LENGTH
COMP ZERO
JEQ ENDFIL
JSUB WRREC 
J CLOOP
.
.
.
END

My Sample output:

muthu@muthu-G31M-ES2L:~/LangFiles/PASS1$ ./a.out
All Files successfully opened!! Operation has begun...
COPY START 1000 

COPY
START
1000
segmentation Fault.

Answer 1

When do you expect this loop to terminate?

  while(1)
  {
       wordReader = strtok(NULL," \n");
       printf("%s\n",wordReader);
  }