Linked Lists Merge Sort (Seg Fault)

[sanjit_15 (SANJIT ANAND)]

“Segmentation Fault” in LinkedList MergeSort.
the link of my code: https://ide.codingblocks.com/s/219463

[Aarnav-Jindal-1059677350830863 (Aarnav Jindal)]

Hey @sanjit_15
Just one small error
Line 24 should be
while(fast!=NULL && fast->next!=NULL)

Please close the doubt