Today, in pictures.

$8 = (struct PathItem *) 0x804a9a8
(gdb) print list_node->next
$9 = (struct PathItem *) 0x804a9f0
(gdb) print list_node->next->next
$10 = (struct PathItem *) 0x804a9c0
(gdb) print list_node->next->next->next
$11 = (struct PathItem *) 0x804a9c0
(gdb) print list_node->prev->prev->prev
$12 = (struct PathItem *) 0x804a9a8
(gdb) print list_node->prev->prev->prev->next
$13 = (struct PathItem *) 0x804a9d8
(gdb) print list_node->prev->prev->prev->next->next
$14 = (struct PathItem *) 0x804a9f0
(gdb) print list_node->prev->prev->prev->next->next->next
$15 = (struct PathItem *) 0x804a9c0
(gdb) print list_node->prev->prev->prev->next->next->next->next
$16 = (struct PathItem *) 0x804a9c0
(gdb) print list_node->prev->prev->prev->prev
$17 = (struct PathItem *) 0x804a9a8
(gdb) print list_node->prev->prev->prev->prev->prev
$18 = (struct PathItem *) 0x804a9a8
(gdb) print list_node->prev->prev->prev->prev->prev->next
$19 = (struct PathItem *) 0x804a9d8
(gdb) print list_node->prev->prev->prev->prev->prev->next->next
$20 = (struct PathItem *) 0x804a9f0
(gdb) print list_node->prev->prev->prev->prev->prev->next->next->next
$21 = (struct PathItem *) 0x804a9c0
(gdb) print list_node->prev->prev->prev->prev->indx
$22 = -1
(gdb) print list_node->prev->prev->prev->prev->next->indx
$23 = 2
(gdb) print list_node->prev->prev->prev->prev->next->next->indx
$24 = 7
(gdb) print list_node->prev->prev->prev->prev->next->next->next->indx
$25 = -1