Bug 1370054

Summary: QtQml crashes with complex qml files
Product: [Fedora] Fedora Reporter: Martin Bříza <mbriza>
Component: mingw-qt5-qtdeclarativeAssignee: Erik van Pienbroek <erik-fedora>
Status: CLOSED ERRATA QA Contact: Fedora Extras Quality Assurance <extras-qa>
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Version: rawhideCC: erik-fedora
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Fixed In Version: mingw-qt5-qtdeclarative-5.6.0-2.fc25 Doc Type: If docs needed, set a value
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Last Closed: 2016-10-31 23:45:10 UTC Type: Bug
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Bug Blocks: 1357424    
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Description Flags
Proposed patch
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Updated patch none

Description Martin Bříza 2016-08-25 08:04:43 UTC 
Description of problem:
QtQml crashes when loading a complex QML application, like for example the Fedora Media Writer.

Version-Release number of selected component (if applicable):
mingw32-qt5-qtdeclarative-5.6.0-1

How reproducible:
Always

Steps to Reproduce:
1. Compile FMW with mingw32 toolchain
2. Add all necessary libraries (basically just copy /usr/i686-w64-mingw32/sys-root/mingw/bin/*.dll, /usr/i686-w64-mingw32/sys-root/mingw/lib/qt5/plugins/* and /usr/i686-w64-mingw32/sys-root/mingw/share/qt5/qml/* to the directory of the binary) 
3. Try to run it

Actual results:
Crash in QV4

Expected results:
Application starts

Additional info:
A similar issue is reported on [0] with a backtrace from an ARM machine. This happens with our MinGW packages too, though.
The patch suggested in the report fixes our problem, too.


[0] https://bugreports.qt.io/browse/QTBUG-55482
Comment 1 Martin Bříza 2016-08-25 09:21:51 UTC 
Created attachment 1193935 [details]
Proposed patch

I'm proposing to patch the problem like this.

I had to add an explicit system zlib link option because a compilation error. This may not be necessary though.
Comment 2 Martin Bříza 2016-08-26 10:13:01 UTC 
Created attachment 1194280 [details]
Updated patch

Here is an updated patch for the issue.
Scratch builds are here: http://koji.fedoraproject.org/koji/taskinfo?taskID=15383534
Comment 3 Fedora Update System 2016-09-02 11:11:50 UTC 
mingw-qt5-qtdeclarative-5.6.0-2.fc25 has been submitted as an update to Fedora 25. https://bodhi.fedoraproject.org/updates/FEDORA-2016-a7f5a94f50
Comment 4 Fedora Update System 2016-09-03 03:53:18 UTC 
mingw-qt5-qtdeclarative-5.6.0-2.fc25 has been pushed to the Fedora 25 testing repository. If problems still persist, please make note of it in this bug report.
See https://fedoraproject.org/wiki/QA:Updates_Testing for
instructions on how to install test updates.
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2016-a7f5a94f50
Comment 5 Fedora Update System 2016-10-31 23:45:10 UTC 
mingw-qt5-qtdeclarative-5.6.0-2.fc25 has been pushed to the Fedora 25 stable repository. If problems still persist, please make note of it in this bug report.