https://bugs.winehq.org/show_bug.cgi?id=48815
Bug ID: 48815 Summary: user32:win "unexpected 0x738 message" Windows 10 failures Product: Wine Version: unspecified Hardware: x86 OS: Windows Status: NEW Severity: major Priority: P2 Component: user32 Assignee: wine-bugs@winehq.org Reporter: fgouget@codeweavers.com
user32:win sometimes fails complaining about an unexpected 0x738 message:
win.c:3858: Test failed: message 0738 available
or
win.c:3852: Test failed: hwnd 00210500 message 0738
This second message includes the window handle which means it is "always new", which can cause the TestBot to mistakenly attribute the failure to the patch being tested. So I bumped the priority on this bug.
From what I gathered the 0x738 message was introduced in Windows 10 1703 which
is why this failure only happens on our 1709+ test configurations (we don't have 1703). Also nobody seems to know what this message is, only that it seems to be related to windows belonging to the UserAdapterWindowClass:
https://forums.zimbra.org/viewtopic.php?t=63188 https://stackoverflow.com/questions/44395364/windows-creators-update-crashes... https://github.com/otya128/winevdm/issues/114