[Bug 5126] New: Wine does expose internal structures to applications via ListView_GetItemT

[Wine Bugs]

http://bugs.winehq.org/show_bug.cgi?id=5126

Summary: Wine does expose internal structures to applications via
                    ListView_GetItemT
           Product: Wine
           Version: 0.9.11.
          Platform: PC
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: wine-winelib
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]

Buggy application is snes9x, affected file is listview.c.

It does change the item.mask in the GETDISPINFO request, which later leads to a
failed assertion (as LVIF_INDENT is no longer set).

This is for sure an application bug, but GetItemT is stated to be internal and
such avoids copying. This is fine, but whenever data is exchanged with
applications wine should copy only those data that the application is allowed to
actually change. Else applications could do whatever they want with the internal
data structures, which for sure is not wanted and leads to side effects as
described above.

To reproduce the bug:

- Download snes9x
- Go to the "Open file" dialog -> assertion

Just wanted to report it.