tests/unistd/dup.out


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DUP
errno: 0
f: 4
f2: 5
f3: 6
close(f1): 0
close(f2): 0
close(f3): 0

DUP2
errno: 0
f: 7
f2: 8
f3: 8
close(f1): 0
close(f2): 0
close(f3): -1