Segmentation fault due to freeing memory?

Errors in freeing memory are generally caused by freeing the same pointer twice (not likely here), freeing an invalid pointer, or a previous buffer underrun (of the same block) or overrun (the block before it) causing administrative data to become corrupted. Since you say it happens with large files as input rather than small, you're most likely overrunning a buffer.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.