[scribus] crash when calling CharStyle::displayName()

[ale rimoldi]

hi

i have an issue with the code i'm writing and i don't see what i'm
doing wrong...

can anybody help me?

in the file

https://github.com/aoloe/scribus-plugin-export-epub/blob/master/src/module/scribusAPIDocumentItemFormatting.cpp

i have

characterStyleName = item->itemText.charStyle(position +
1).displayName();

it normally works correctly with my first test files, but with a
specific file i got from cédric, i get a crash in

CharStyle::displayName (this=0x2cb1410)
at /home/ale/docs/src/scribus/scribus/styles/charstyle.cpp:172

the full backtrace is below and in the issue on githbu and the .sla file
(with one text frame only) is linked from there, too.

https://github.com/aoloe/scribus-plugin-export-epub/issues/5

does anybody have a hint what the problem might be?

greetings from montpellier
a.l.e



#0  0x00000000011ed527 in CharStyle::displayName (this=0x2cb1410)
at /home/ale/docs/src/scribus/scribus/styles/charstyle.cpp:172 #1
0x00007fffcccc0b23 in ScribusAPIDocumentItemFormatting::readAtPosition
(this=0x7fffffffc7f0, item=0x2cafb20, position=0)
at /home/ale/docs/src/scribus/scribus/plugins/export/epub/module/scribusAPIDocumentItemFormatting.cpp:32
#2  0x00007fffcccbbff3 in
ScribusAPIDocumentItemFormatting::readAtPosition (this=0x7fffffffc7f0,
position=0)
at /home/ale/docs/src/scribus/scribus/plugins/export/epub/module/scribusAPIDocumentItemFormatting.h:49
#3  0x00007fffcccb8e01 in ScribusAPIDocumentItem::getTextDom
(this=0x2632bc0, xhtmlDocument=...)
at /home/ale/docs/src/scribus/scribus/plugins/export/epub/module/scribusAPIDocumentItem.cpp:77
#4  0x00007fffcccc1936 in EpubExportContent::fillEpub (this=0x2727080,
epub=0x2ba1880, structure=0x2c9a3f0)
at /home/ale/docs/src/scribus/scribus/plugins/export/epub/module/epubexportContent.cpp:51
#5  0x00007fffcccc53c8 in EpubExport::doExport (this=0x2de9de0)
at /home/ale/docs/src/scribus/scribus/plugins/export/epub/epubexport.cpp:57
#6  0x00007fffccca0d5f in EpubExportPlugin::run (this=0x1ba8710,
doc=0x2be25a0, target=...)
at /home/ale/docs/src/scribus/scribus/plugins/export/epub/epubexportplugin.cpp:111
#7  0x0000000000733ff3 in ScActionPlugin::qt_static_metacall
(_o=0x1ba8710, _c=QMetaObject::InvokeMetaMethod, _id=1,
_a=0x7fffffffd4d0)
at /home/ale/docs/src/scribus/build/scribus/moc_scplugin.cpp:163 #8
0x00007ffff768d91e in QMetaObject::activate(QObject*, int, int, void**)
() from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #9
0x0000000000735781 in ScrAction::triggeredData (this=0x1ea9140,
_t1=0x2be25a0)
at /home/ale/docs/src/scribus/build/scribus/moc_scraction.cpp:266 #10
0x0000000000bec388 in ScrAction::triggeredToTriggeredData
(this=0x1ea9140)
at /home/ale/docs/src/scribus/scribus/scraction.cpp:121 #11
0x00000000007351df in ScrAction::qt_static_metacall (_o=0x1ea9140,
_c=QMetaObject::InvokeMetaMethod, _id=11, _a=0x7fffffffd7e0)
at /home/ale/docs/src/scribus/build/scribus/moc_scraction.cpp:117 #12
0x00007ffff768d91e in QMetaObject::activate(QObject*, int, int, void**)
() from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #13
0x00007ffff6cac202 in QAction::triggered(bool) ()
from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #14
0x00007ffff6cae6e8 in QAction::activate(QAction::ActionEvent) ()
from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #15
0x00007ffff6e2063a in ?? ()
from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #16
0x00007ffff6e24744 in ?? ()
from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #17
0x00007ffff6e26ce5 in QMenu::keyPressEvent(QKeyEvent*) ()
from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #18
0x00007ffff6cee31e in QWidget::event(QEvent*) ()
from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #19
0x00007ffff6e28f1b in QMenu::event(QEvent*) ()
from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #20
0x00007ffff6cb369c in QApplicationPrivate::notify_helper(QObject*,
QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #21
0x00007ffff6cb8bda in QApplication::notify(QObject*, QEvent*) ()
from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #22
0x00007ffff765e9d5 in QCoreApplication::notifyInternal(QObject*,
QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #23
0x00007ffff6d0e003 in ?? ()
from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #24
0x00007ffff6cb369c in QApplicationPrivate::notify_helper(QObject*,
QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #25
0x00007ffff6cb8416 in QApplication::notify(QObject*, QEvent*) ()
from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #26
0x00007ffff765e9d5 in QCoreApplication::notifyInternal(QObject*,
QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #27
0x00007ffff65532cb in
QGuiApplicationPrivate::processKeyEvent(QWindowSystemInterfacePrivate::KeyEvent*)
() from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5 #28 0x00007ffff6557595
in
QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*)
() from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5 #29 0x00007ffff653e328
in
QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>)
() from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5 #30 0x00007fffe434e8e0
in ?? ()
from /usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqxcb.so #31
0x00007fffeda8de04 in g_main_context_dispatch ()
from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #32 0x00007fffeda8e048
in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #33
0x00007fffeda8e0ec in g_main_context_iteration ()
from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #34 0x00007ffff76b56bc in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
() from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #35
0x00007ffff765c8eb in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #36 0x00007ffff7663f46
in QCoreApplication::exec() ()
from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #37 0x00000000011b2943
in mainApp (argc=1, argv=0x7fffffffe448)
at /home/ale/docs/src/scribus/scribus/main_nix.cpp:86 #38
0x00000000011b28d3 in main (argc=1, argv=0x7fffffffe448)
at /home/ale/docs/src/scribus/scribus/main_nix.cpp:54