title: Segmentation Fault in Terminal but not on koding.com
body: <p>I'm writing a C program, and it is dealing with fairly large files (~4MB .txt files). The program opens the big file and splits it up into a bunch of little files, before testing each of the little files. I've written a function that later opens those files, tests to make sure the full section was copied, and returns 1 if the section was not effectively copied (a different bug I'm having is that sometimes it only copies the first 2 words of a section). When I compile &amp; run my program through koding.com (which uses the gcc compiler), it works perfectly for all test files. However, when I try to run it locally on my MacBook through Terminal (I run Lion, and have the version of gcc included in Xcode 4.6.3), it gives me "Segmentation fault: 11" and quits, but only when I use it on certain files (e.g. a 3.9MB file gives the segfault, but a 2.7MB file does not).</p>
  
  <p>Here is how the function is called:</p>
  
  <pre><code>for(i=1;tableArray[i].count!=0;i++)
  {
      strcpy(word,tableArray[i].shortName);
      strcat(word,".txt");
      if(fopen(word, "r")!=NULL)
      {
          testFile = fopen(word, "r");
          problems[i] = checkFile(testFile);
          fclose(testFile);
      }
  
  }
  </code></pre>
  
  <p>And here is the function:</p>
  
  <pre><code>int checkFile(FILE *file)
  {
      char word[NAMELEN];
      int count = 0;
  
      while(fscanf(file, "%s", word)!=EOF)
          count++;
  
      if(count&lt;3)
          return(1);
      else return(0);
  }
  </code></pre>
  
  <p>Any insight is much appreciated. Thanks!</p>