nl_node.c:256:14: error: incompatible integer to pointer conversion assigning to 'void *' from 'int' [-Wint-conversion]
root->user = count;
^ ~~~~~
nl_node.c:263:18: error: incompatible integer to pointer conversion assigning to 'void *' from 'int' [-Wint-conversion]
node->user = ++count;
^ ~~~~~~~
nl_node.c:278:18: error: incompatible integer to pointer conversion assigning to 'void *' from 'int' [-Wint-conversion]
node->user = ++count;
^ ~~~~~~~