Crash in 2.3.x

[Kornel Benko]

Am Mon, 11 Oct 2021 15:51:07 +0200
schrieb Pavel Sanda <sanda at lyx.org>:

> On Mon, Oct 11, 2021 at 03:39:18PM +0200, Pavel Sanda wrote:
> > Hi,
> > 
> > can anyone reproduce the following crash recipy? :
> > 1. Preferences -> Shortcuts -> Show keybindings containing
> > 2. Press "i"
> > 3. Kaboom
> > 
> > Current 2.3.x branch on stable debian.   
> 
> (gdb) bt
> #0  0x00007ffff7ca32d8 in QTreeWidgetItem::treeModel(QTreeWidget*) const ()
> from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #1  0x00007ffff7ca3a0b in
> QTreeWidgetItem::setExpanded(bool) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
> #2  0x0000555555eef1a4 in lyx::frontend::PrefShortcuts::on_searchLE_textEdited() () #3
> 0x0000555555ef3fb1 in lyx::frontend::PrefShortcuts::qt_static_metacall(QObject*,
> QMetaObject::Call, int, void**) () #4  0x0000555555ef4026 in
> lyx::frontend::PrefShortcuts::qt_metacall(QMetaObject::Call, int, void**) ()
> 
> > Pavel  

Same here.
Thread 1 "lyx2.3" received signal SIGSEGV, Segmentation fault.
0x0000555556c8d753 in QTreeWidgetItem::setExpanded (this=0x0, aexpand=true)
    at /usr/include/x86_64-linux-gnu/qt5/QtWidgets/qtreewidget.h:407
407	{ if (view) view->setItemExpanded(this, aexpand); }

this == 0 looks not good.

	Kornel

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