Simple node allocator / freer

gistfile1.c

struct debug_data {
   char *data;
   struct debug_data *nxt;
}

struct debug_data *root; // all of the debug chunks

...
...
new_debug_data(char *dbg_string) {
     struct debug_data *n;

     n = (struct debug_data *)(malloc(sizeof(struct debug_data) + strlen(dbg_string));
     if (n == NULL) return; // no more memory
     n->data = (char *)(n + sizeof(struct debug_data));
     strcpy(dbg_string, n->data);
     n->nxt = root;
     root = n;
     return;
}

void
free_all_debugs(void) {
    while (root) {
        cur = root;
        root = root->nxt;
        free(cur);
    }
}