[Bug 54957] New: ShareX page fault

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=54957

Bug ID: 54957
           Summary: ShareX page fault
           Product: Wine
           Version: 8.8
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Created attachment 74483
  --> https://bugs.winehq.org/attachment.cgi?id=74483
backtrace

When trying to capture the screen using sharex it crashes.

[Bug 54957] ShareX page fault

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=54957

David Kahurani  changed:

What    |Removed                     |Added
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                 CC|                            |[e-mail]

--- Comment #1 from David Kahurani  ---
I see this from ShareX code...

[DllImport("dwmapi.dll", PreserveSig = false)]
        public static extern bool DwmIsCompositionEnabled();

I'm curious whether 'PreserveSig = false' allows someone to totally cobber a
function signature including the arguments because that looks, by all means,
wrong.

This is probably the cause of the problem. The problem probably goes unnoticed
on Windows because it triggers an exception and it gets silently handled (now 
that you have 'PreserveSig = false')