--- /dev/null
+From 6756d00fba11ca2af921a67acdb5e3c92e23bb8a Mon Sep 17 00:00:00 2001
+From: David Edmundson <kde@davidedmundson.co.uk>
+Date: Wed, 18 Dec 2019 12:52:15 +0000
+Subject: [calendar] Check out of bounds array access in QLocale lookup
+
+Summary:
+If we have a broken locale setup we don't have any uiLanugages to look
+up the relevant locale object for.
+
+In that case use the system locale.
+
+Test Plan:
+Had a crash here
+
+#11 0x00007ff982aab0b2 in QList<QString>::at(int) const (this=0x7ffd50b1d928, i=0) at /opt/qt5/include/QtCore/qlist.h:571
+#12 0x00007ff982aaaa4a in Calendar::monthName() const (this=0x5640cce026f0) at /home/david/projects/kde5/src/frameworks/plasma-framework/src/declarativeimports/calendar/calendar.cpp:202
+#13 0x00007ff982aa14e9 in Calendar::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) (_o=0x5640cce026f0, _c=QMetaObject::ReadProperty, _id=9, _a=0x7ffd50b1dd40) at src/declarativeimports/calendar/calendarplugin_autogen/EWIEGA46WW/moc_calendar.cpp:340
+
+Reviewers: #plasma, vkrause
+
+Reviewed By: vkrause
+
+Subscribers: kde-frameworks-devel
+
+Tags: #frameworks
+
+Differential Revision: https://phabricator.kde.org/D25960
+---
+ src/declarativeimports/calendar/calendar.cpp | 9 ++++++---
+ 1 file changed, 6 insertions(+), 3 deletions(-)
+
+diff --git a/src/declarativeimports/calendar/calendar.cpp b/src/declarativeimports/calendar/calendar.cpp
+index f652c65..c77824d 100644
+--- a/src/declarativeimports/calendar/calendar.cpp
++++ b/src/declarativeimports/calendar/calendar.cpp
+@@ -199,9 +199,12 @@ QString Calendar::monthName() const
+ // locale and take the month name from that.
+ //
+ // See https://bugs.kde.org/show_bug.cgi?id=353715
+- const QString lang = QLocale().uiLanguages().at(0);
+- // If lang is empty, it will create just a system locale
+- QLocale langLocale(lang);
++
++ QLocale langLocale;
++
++ if (QLocale().uiLanguages().length() > 0) {
++ langLocale = QLocale(QLocale().uiLanguages().at(0));
++ }
+ return langLocale.standaloneMonthName(m_displayedDate.month());
+ }
+
+--
+cgit v1.1
--- /dev/null
+# Copyright 1999-2019 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+KDE_ORG_NAME="${PN}-framework"
+PVCUT=$(ver_cut 1-2)
+QTMIN=5.12.3
+VIRTUALX_REQUIRED="test"
+inherit ecm kde.org
+
+DESCRIPTION="Plasma framework"
+LICENSE="LGPL-2+"
+KEYWORDS="~amd64 ~arm ~arm64 ~x86"
+IUSE="gles2 wayland X"
+
+# drop qtgui subslot operator when QT_MINIMAL >= 5.14.0
+BDEPEND="
+ >=kde-frameworks/kdoctools-${PVCUT}:5
+"
+RDEPEND="
+ >=kde-frameworks/kactivities-${PVCUT}:5
+ >=kde-frameworks/karchive-${PVCUT}:5
+ >=kde-frameworks/kconfig-${PVCUT}:5
+ >=kde-frameworks/kconfigwidgets-${PVCUT}:5
+ >=kde-frameworks/kcoreaddons-${PVCUT}:5
+ >=kde-frameworks/kdeclarative-${PVCUT}:5
+ >=kde-frameworks/kglobalaccel-${PVCUT}:5
+ >=kde-frameworks/kguiaddons-${PVCUT}:5
+ >=kde-frameworks/ki18n-${PVCUT}:5
+ >=kde-frameworks/kiconthemes-${PVCUT}:5
+ >=kde-frameworks/kio-${PVCUT}:5
+ >=kde-frameworks/kirigami-${PVCUT}:5
+ >=kde-frameworks/knotifications-${PVCUT}:5
+ >=kde-frameworks/kpackage-${PVCUT}:5
+ >=kde-frameworks/kservice-${PVCUT}:5
+ >=kde-frameworks/kwidgetsaddons-${PVCUT}:5
+ >=kde-frameworks/kwindowsystem-${PVCUT}:5
+ >=kde-frameworks/kxmlgui-${PVCUT}:5
+ >=dev-qt/qtdbus-${QTMIN}:5
+ >=dev-qt/qtdeclarative-${QTMIN}:5
+ >=dev-qt/qtgui-${QTMIN}:5=[gles2=]
+ >=dev-qt/qtquickcontrols-${QTMIN}:5
+ >=dev-qt/qtsql-${QTMIN}:5
+ >=dev-qt/qtsvg-${QTMIN}:5
+ >=dev-qt/qtwidgets-${QTMIN}:5
+ !gles2? ( virtual/opengl )
+ wayland? (
+ >=kde-frameworks/kwayland-${PVCUT}:5
+ media-libs/mesa[egl]
+ )
+ X? (
+ >=dev-qt/qtx11extras-${QTMIN}:5
+ x11-libs/libX11
+ x11-libs/libxcb
+ )
+"
+DEPEND="${RDEPEND}
+ X? ( x11-base/xorg-proto )
+"
+
+RESTRICT+=" test"
+
+PATCHES=( "${FILESDIR}/${P}-calendar-out-of-bounds.patch" )
+
+src_configure() {
+ local mycmakeargs=(
+ $(cmake_use_find_package !gles2 OpenGL)
+ $(cmake_use_find_package wayland EGL)
+ $(cmake_use_find_package wayland KF5Wayland)
+ $(cmake_use_find_package X X11)
+ $(cmake_use_find_package X XCB)
+ )
+
+ ecm_src_configure
+}