GSoC 2013 - Registry Merging Project

[Guo Jian]

I just found that the REG_OPTION_VOLATILE of create_key in hkcr may
have some tricks. Not surprisingly found a strange situation when
testing on windows. See my test here please :
http://newtestbot.winehq.org/JobDetails.pl?Key=932
This happens as following :
First create hkcu/software/classes/key1, then create the
hkcr/key1/subkey with REG_OPTION_VOLATILE. RegEnumKey on hkcr  will
give two 'key1'.
I tried to use RegQueryInfoKeyA to count them, also there are more
than there should be.
Why there are two duplicated keys? May it be a bug of windows? If it
is, should we design our algorithm to avoid or treat it as a normal
feature?