coverity#1430077 add assert for 'Division or modulo by zero'

and

coverity#1430076 Division or modulo by zero
coverity#1430078 Division or modulo by float zero
coverity#1430082 Division or modulo by float zero
coverity#1430083 Division or modulo by zero
coverity#1430085 Division or modulo by zero
coverity#1430102 Division or modulo by zero
coverity#1430103 Division or modulo by zero

Change-Id: I9d7190f95d19a755c681f1f897a8921105ef7c46
Reviewed-on: https://gerrit.libreoffice.org/51568
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/accessibility/inc/helper/listboxhelper.hxx b/accessibility/inc/helper/listboxhelper.hxx
index 346fdf6a9ecb..0aa01abb21e5 100644
--- a/accessibility/inc/helper/listboxhelper.hxx
+++ b/accessibility/inc/helper/listboxhelper.hxx
@@ -65,7 +65,9 @@ public:
         {
             tools::Rectangle aTemp = m_aComboListBox.GetDropDownPosSizePixel();
             Size aSize = aTemp.GetSize();
-            aSize.setHeight( aSize.Height() / m_aComboListBox.GetDisplayLineCount() );
+            sal_uInt16 nLineCount = m_aComboListBox.GetDisplayLineCount();
+            assert(nLineCount && "div-by-zero");
+            aSize.setHeight( aSize.Height() / nLineCount );
             Point aTopLeft = aTemp.TopLeft();
             aTopLeft.AdjustY( aSize.Height() * ( nItem - m_aComboListBox.GetTopEntry() ) );
             aRect = tools::Rectangle( aTopLeft, aSize );