tests/ref/fate/fifo

-12: 1
-11: 2
-10: 3
-9: 4
-8: 5
-7: 6
-6: 7
-5: 8
-4: 9
-3: 10
-2: 11
-1: 12
0: 0
1: 1
2: 2
3: 3
4: 4
5: 5
6: 6
7: 7
8: 8
9: 9
10: 10
11: 11
12: 12

0: 0
1: 1
2: 2
3: 3
4: 4
5: 5
6: 6
7: 7
8: 8
9: 9
10: 10
11: 11
12: 12

0 1 2 3 4 5 6 7 8 9 10 11 12
0: 0
1: 1
2: 2
3: 3
4: 4
5: 5
6: 6
7: 7
8: 8
9: 9
10: 10
11: 11
12: 12