From 6316173f1ba87aede1a1c872b9997a6919374c30 Mon Sep 17 00:00:00 2001
From: Adriaan de Groot <groot@kde.org>
Date: Mon, 11 Feb 2019 17:45:23 -0500
Subject: [PATCH] [partition] More conservative handling of device pointers

 - thanks @abucodonosor
---
 src/modules/partition/gui/PartitionPage.cpp | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/modules/partition/gui/PartitionPage.cpp b/src/modules/partition/gui/PartitionPage.cpp
index 86de992e6..2743ec53a 100644
--- a/src/modules/partition/gui/PartitionPage.cpp
+++ b/src/modules/partition/gui/PartitionPage.cpp
@@ -165,9 +165,13 @@ PartitionPage::updateButtons()
 
     if ( m_ui->deviceComboBox->currentIndex() >= 0 )
     {
+        Device* device = nullptr;
         QModelIndex deviceIndex = m_core->deviceModel()->index( m_ui->deviceComboBox->currentIndex(), 0 );
-        auto device = m_core->deviceModel()->deviceForIndex( deviceIndex );
-        if ( device->type() != Device::Type::LVM_Device )
+        if ( deviceIndex.isValid() )
+            device = m_core->deviceModel()->deviceForIndex( deviceIndex );
+        if ( !device )
+            cWarning() << "Device for updateButtons is nullptr";
+        else if ( device->type() != Device::Type::LVM_Device )
         {
             createTable = true;