Howto build an old version of hotspot (pre forest consolidation)

[Volker Simonis]

Hi,

can somebody provide any hints on how to build an older version of
hotspot in the correct context?

I have a reproducible hotspot crash which occurs with jdk-9+105 but
not with jdk-9+104. I can sync to both tags and successfully build the
corresponding jdk. But it seems impossible to update the hotspot repo
to a change between  jdk-9+104 and jdk-9+105 and build the complete
jdk because I always get some wired build errors (no difference if the
other repos are on  jdk-9+104 or jdk-9+105). It seems that the hotspot
revisions between jdk-9+104 and jdk-9+105 are based on some older
versions of jdk. Is there s simple way how I can find out on which
version?

Thank you and best regards,
Volker