[Octave-bug-tracker] [bug #65605] Octave call to function figure(); results in segfault with Qt6 6.7.0

[Markus Mützel]

Update of bug #65605 (group octave):

                  Status:                    None => Patch Submitted        
         Planned Release:                    None => 9.2.0 (current stable) 

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Follow-up Comment #26:

Thank you for bisecting this to the relevant change in Qt6. That was very
useful! 👍

The attached patch avoids the crash on `figure()` with Qt6 version 6.7.0 for
me on Windows 11 using binaries from MSYS2.

If I understand the documentation [1] correctly, this setting is only relevant
for some mobile platforms (using OpenGL ES). It should be ok for us to set
`QOpenGLWidget::PartialUpdate` afaict.

If this also fixes the issue on other platforms, it might be nice to get that
on the stable branch before the release of Octave 9.2.0.

[1]: https://doc.qt.io/qt-6/qopenglwidget.html#UpdateBehavior-enum

(file #55978)

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Additional Item Attachment:

File name: bug65605-qt6-opengl-partial-update.patch Size: 779B
   
<https://file.savannah.gnu.org/file/bug65605-qt6-opengl-partial-update.patch?file_id=55978>


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