[Bug 60551] New: combase: LocalService activation fails when CLSID is registered only in the opposite WOW64 registry view

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=60551

            Bug ID: 60551
           Summary: combase: LocalService activation fails when CLSID is
                    registered only in the opposite WOW64 registry view
           Product: Wine
           Version: 11.20
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: ole32
          Assignee: [e-mail]
          Reporter: [e-mail]
  Target Milestone: ---
      Distribution: ---

Created attachment 82416
  --> http://bugs.winehq.org/attachment.cgi?id=82416
Try the opposite registry view for LocalService activation.

This bug prevents 64-bit 3DMark 11 from starting unless an AppID value of
{1BF1C030-CE12-4A8A-A4E1-EDDCE7176799} is added under
HKLM\Software\Classes\CLSID\{F9C82199-B002-41B4-8B00-0F1ECA89425F} in the
64-bit registry view. The patch fixes COM LocalService activation by retrying
the CLSID-to-AppID lookup in the opposite WOW64 registry view when the initial
lookup fails.

A standalone MinGW-w64 reproducer is attached. It tests same-view registration,
opposite-view registration, and opposite-view registration with an AppID
mapping added in the client's view. The tested reproducer returns 0, 0, 0 on
Windows and patched Wine, and 0, 1, 0 on unpatched Wine.

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