[Bug 37017] New: KEY_WOW64_32KEY doesn't work properly after opening HKLM\Software key.

[wine-bugs at winehq.org]

https://bugs.winehq.org/show_bug.cgi?id=37017

            Bug ID: 37017
           Summary: KEY_WOW64_32KEY doesn't work properly after opening
                    HKLM\Software key.
           Product: Wine
           Version: 1.7.23
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: advapi32
          Assignee: wine-bugs at winehq.org
          Reporter: sagawa.aki+winebugs at gmail.com

Created attachment 49185
  --> https://bugs.winehq.org/attachment.cgi?id=49185
proof of concept

I noticed that following scenario doesn't work properly on 64-bit executable.

Step 1. Open or create HKEY_LOCAL_MACHINE\\Software with KEY_WOW64_32KEY.
            e.g. RegOpenKeyEx( HKEY_LOCAL_MACHINE, "Software", 0,
KEY_WOW64_32KEY | KEY_ALL_ACCESS, &key).
Step 2. Open or create a subkey of the above key with KEY_WOW64_32KEY.
           e.g. RegOpenKeyEx( key, "Wine\\Winetest", 0, KEY_WOW64_32KEY |
KEY_ALL_ACCESS, &subkey)
Step 3. Get the value of the key.

Expected behavior is obtaining 32-bit view value in step 3.
But, currently wine returns 64-bit view value then.
Opening directly, i.e. RegOpenKeyEx(HKLM, "Software\Wine\Winetest", 0,
KEY_WOW64_32KEY...), works as expected.

I wrote proof of concepts for 1.7.23. See the attachment for details.
I'm working on this issue.

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