[Bug 53129] New: user32:msg - test_paint_messages() fails systematically on Windows 7

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=53129

            Bug ID: 53129
           Summary: user32:msg - test_paint_messages() fails
                    systematically on Windows 7
           Product: Wine
           Version: unspecified
          Hardware: x86-64
                OS: Windows
            Status: NEW
          Severity: normal
          Priority: P2
         Component: user32
          Assignee: wine-bugs at winehq.org
          Reporter: fgouget at codeweavers.com

user32:msg - test_paint_messages() fails systematically on Windows 7. The exact
set of failures differs with each run but there is always a "region" and an
"InvalidateErase" failure:

msg.c:8487: Test failed: Regions are different
msg.c:8488: Test failed: InvalidateErase: 0: in msg 0x0085 expecting wParam 0x1
got 0xfffffffffd0406c1
msg.c:8498: Test failed: region should be null (3)
msg.c:8510: Test failed: InvalidateErase: 0: in msg 0x0085 expecting wParam 0x1
got 0x38040675
msg.c:8510: Test failed: InvalidateErase: 3: the msg sequence is not complete:
expected 0000 - actual 0085
msg.c:8517: Test failed: Regions are different
msg.c:8518: Test failed: InvalidateErase: 0: in msg 0x0085 expecting wParam 0x1
got 0x2504170b

https://test.winehq.org/data/patterns.html#user32:msg

The InvalidateErase failure is particularly troublesome because the unexpected
wParam value changes with each run so the failure always looks like it is new.

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