Fgets errors seg fault

Question

Is there any reason that a program, which compiled earlier, should seg fault at a point because of fgets? I changed no code related to it AT ALL. Suddenly I believe it is failin

Answer 1

OK, the reason it use to "work" is you were clobbering an unimportant memory location. Changing your code shifted things around and now you are clobbering something important.

You're passing an uninitialized pointer to createarray(). You wanted to do something like:

int* aryHold;
//...
... createarray(&aryHold ... 

BTW, many compilers have the ability to catch this kind of error for you. If you haven't already, you might want to see if your compiler has an error checking option that could have saved you hassling with this (and perhaps find some other code that only "works" accidentally).