Bug 1753457

This bug was initially created as a copy of Bug #1662305

I am copying this bug because: 
This problem has reoccurred in: keepassxc-2.4.3-5.fc31.x86_64


Description of problem: can't run keepassxc

Version-Release number of selected component (if applicable): keepassxc-2.3.4-1.fc29.i686


How reproducible: Install 32-bit Fedora 29 (or use Live image), then install keepassxc and try to launch it from terminal (otherwise you don't see the error message, the application just doesn't start)


Steps to Reproduce:
1. See above
2.
3.

Actual results: 

$ keepassxc
Warning: Ignoring XDG_SESSION_TYPE=wayland on Gnome. Use QT_QPA_PLATFORM=wayland to run on Wayland anyway.
Segmentation fault

Expected results:

keepassxc should start

Additional info:

Abrt doesn't seem to catch this and I wasn't able to get a backtrace from the packaged binary. I checked out the matching release from Github and built the binaries with debugging enabled. The segmentation fault can be reproduced and I have pasted the backtrace below.

This looks like the actual root cause might be in qgnomeplatform, but for now I've only seen this problem with keepassxc.

Thread 1 "keepassxc" received signal SIGSEGV, Segmentation fault.
0xb6601655 in memcpy () from /lib/libc.so.6

(gdb) bt
#0  0xb6601655 in memcpy () from /lib/libc.so.6
#1  0xb6ab4ae5 in ?? () from /lib/libQt5Core.so.5
#2  0xb6abcca0 in QString::arg(QStringView, int, QChar) const () from /lib/libQt5Core.so.5
#3  0xb6abcdca in QString::arg(QString const&, int, QChar) const () from /lib/libQt5Core.so.5
#4  0xb27a9149 in GnomeHintsSettings::kvantumThemeForGtkTheme() const () from /usr/lib/qt5/plugins/platformthemes/libqgnomeplatform.so
#5  0xb27ad943 in GnomeHintsSettings::loadTheme() () from /usr/lib/qt5/plugins/platformthemes/libqgnomeplatform.so
#6  0xb27ae045 in GnomeHintsSettings::GnomeHintsSettings() () from /usr/lib/qt5/plugins/platformthemes/libqgnomeplatform.so
#7  0xb27a84ab in QGnomePlatformTheme::loadSettings() () from /usr/lib/qt5/plugins/platformthemes/libqgnomeplatform.so
#8  0xb27a8506 in QGnomePlatformTheme::QGnomePlatformTheme() () from /usr/lib/qt5/plugins/platformthemes/libqgnomeplatform.so
#9  0xb27a81d6 in QGnomePlatformThemePlugin::create(QString const&, QStringList const&) () from /usr/lib/qt5/plugins/platformthemes/libqgnomeplatform.so
#10 0xb715c486 in QPlatformThemeFactory::create(QString const&, QString const&) () from /lib/libQt5Gui.so.5
#11 0xb7165b9e in QGuiApplicationPrivate::createPlatformIntegration() () from /lib/libQt5Gui.so.5
#12 0xb71671cc in QGuiApplicationPrivate::createEventDispatcher() () from /lib/libQt5Gui.so.5
#13 0xb772c19c in QApplicationPrivate::createEventDispatcher() () from /lib/libQt5Widgets.so.5
#14 0xb6bf2d44 in QCoreApplicationPrivate::init() () from /lib/libQt5Core.so.5
#15 0xb71691e9 in QGuiApplicationPrivate::init() () from /lib/libQt5Gui.so.5
#16 0xb772e09e in QApplicationPrivate::init() () from /lib/libQt5Widgets.so.5
#17 0xb772e155 in QApplication::QApplication(int&, char**, int) () from /lib/libQt5Widgets.so.5
#18 0x00441d9d in Application::Application (this=0xbfffe7b8, argc=@0xbfffe860: 1, argv=0xbfffe8f4) at /home/user/keepassxc-src/src/gui/Application.cpp:92
#19 0x00434352 in main (argc=1, argv=0xbfffe8f4) at /home/user/keepassxc-src/src/main.cpp:72