unified logging fingerprint ?

[Remi Forax]

Hi all,
while playing with jaotc, i have line like this if i enable the VM logging,

[0.035s][info][class,fingerprint] java.util.concurrent.ConcurrentHashMap$KeySetView :  expected = 0x0000000000000000 actual = 0x000015a151430d2a
[0.035s][info][class,load       ] java.util.concurrent.ConcurrentHashMap$ValuesView source: jrt:/java.base
[0.035s][info][class,load       ] java.util.concurrent.ConcurrentHashMap$EntrySetView source: jrt:/java.base
[0.035s][info][class,fingerprint] java.util.concurrent.ConcurrentHashMap$EntrySetView :  expected = 0x0000000000000000 actual = 0x000019184fc557bd
[0.035s][info][class,load       ] jdk.internal.reflect.Reflection source: jrt:/java.base

i wonder if it's something normal or if i've done something wrong ?

Rémi