Bug 2225531

Summary: qt5-qtpbfimageformat causes some qt-applications to crash
Product: [Fedora] Fedora Reporter: tk20
Component: qt5-qtpbfimageformatAssignee: Nikola Forró <nforro>
Status: CLOSED EOL QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: high Docs Contact:
Priority: unspecified    
Version: 38CC: nforro, tumic
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OS: Unspecified   
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Last Closed: 2024-05-28 13:35:17 UTC Type: Bug
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description Flags
gdb /usr/bin/ghostwriter 2>&1 | tee ~/ghostwriter.log none

Description tk20 2023-07-25 13:36:01 UTC 
Created attachment 1977475 [details]
gdb /usr/bin/ghostwriter 2>&1 | tee ~/ghostwriter.log

Description of problem:
Having qt5-qtpbfimageformat installed can cause some Qt-applications to abort during startup.

Version-Release number of selected component (if applicable):
qt5-qtpbfimageformat-2.3-9.fc38.x86_64  

How reproducible:
Reliably

Steps to Reproduce:
1. Install qt5-qtpbfimageformat
2. Install ghostwriter
3. Start ghostwriter

Actual results:
QFontDatabase: Must construct a QGuiApplication before accessing QFontDatabase
Aborted (core dumped)

Expected results:
Ghostwriter starts as intended.

Additional info:
Uninstalling qt5-qtpbfimageformat fixes the issue
This issue has been discussed before upstream: https://github.com/tumic0/QtPBFImagePlugin/issues/7
Attached is the output of gdb /usr/bin/ghostwriter 2>&1 | tee ~/ghostwriter.log
Comment 1 Martin Tůma 2023-11-23 09:15:43 UTC 
This is not a bug in qt5-qtpbfimageformat but a bug in ghostwriter which is broken in the exact way as the Qt assert it triggers says:

> Must construct a QGuiApplication before accessing QFontDatabase

In markdowneditor.cpp:179 ghostwriter calls the QImage API (through the static function buildImageReaderFormats() ) before QGuiApplication is created.
Comment 2 Aoife Moloney 2024-05-28 13:35:17 UTC 
Fedora Linux 38 entered end-of-life (EOL) status on 2024-05-21.

Fedora Linux 38 is no longer maintained, which means that it
will not receive any further security or bug fix updates. As a result we
are closing this bug.

If you can reproduce this bug against a currently maintained version of Fedora Linux
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