[Bug 59487] New: Dr.Explain 7.0: crash in a focused custom edit control containing an empty string

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=59487

            Bug ID: 59487
           Summary: Dr.Explain 7.0: crash in a focused custom edit control
                    containing an empty string
           Product: Wine
           Version: 11.3
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: dwrite
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Created attachment 80484
  --> http://bugs.winehq.org/attachment.cgi?id=80484
Complete terminal output with WINEDEBUG=+dwrite

Launch Dr.Explain > click the Activate Dr.Explain button. The activation dialog
opens, and the edit control (which is initially empty) receives focus, and the
program crashes.

I suspect the issue is in the function
dwrite:dwritetextlayout_HitTestTextPosition.

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[Bug 59487] Dr.Explain 7.0: crash in a focused custom edit control containing an empty string

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=59487

--- Comment #1 from Vladislav Kochemaev <[e-mail]> ---
Created attachment 80485
  --> http://bugs.winehq.org/attachment.cgi?id=80485
Backtrace

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[Bug 59487] Dr.Explain 7.0: crash in a focused custom edit control containing an empty string

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=59487

Vladislav Kochemaev <[e-mail]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                URL|                            |https://downloads.drexplain
                   |                            |.com/drexplain_7_0_1372.exe
           Keywords|                            |download

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[Bug 59487] Dr.Explain 7.0: crash in a focused custom edit control containing an empty string

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=59487

Nikolay Sivov <[e-mail]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |NEW

--- Comment #2 from Nikolay Sivov <[e-mail]> ---
Right, the issue is about HitTestTextPosition() not being prepared for when
there is no runs in the layout.

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