forcepoint#82 back() called on empty vector

Change-Id: I8017777a58f1fef41d1545899868e333c2184c5c
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/131969
Tested-by: Jenkins
Reviewed-by: Caolán McNamara <caolanm@redhat.com>

2 files changed, 30 insertions, 0 deletions

diff --git a/sw/qa/core/data/rtf/fail/forcepoint-82.rtf b/sw/qa/core/data/rtf/fail/forcepoint-82.rtf
new file mode 100644
index 000000000000..54b1dee42c5b
--- /dev/null
+++ b/sw/qa/core/data/rtf/fail/forcepoint-82.rtf
@@ -0,0 +1,28 @@
+{\rtf1
+{\trowd
+\clbrdrl\brdrs\brdrw10\clbrdrr\brdrs\brdrw10\clbrdrt\brdrs\brdrw10\clbrdrb\brdrs\brdrw10\cellx2000
+\pard
+Text 1
+\itap0
+\cell
+\row}
+\pard
+\par
+\itap0
+{\trowd
+\clbrdrl\brdrs\brdrw10\clbrdrr\brdrs\brdrw10\clbrdrt\brdrs\brdrw10\clbrdrb\brdrs\brdrw10\cellx2000
+\pard
+Text 2
+\itap0
+\cell
+\row}
+\itap-1
+{\trowd
+\clbrdrl\brdrs\brdrw2147483649\clbrdrr\brdrs\brdrw9\clbrdrt\brdrs\brdrw10\cl󠁐brdrb\brdrs\brdrw185\cellx1000
+\nestro󠀩w}
+\itap0
+\cell
+\row}
+\itap0
+\par
+}
\ No newline at end of file
diff --git a/writerfilter/source/dmapper/DomainMapperTableManager.cxx b/writerfilter/source/dmapper/DomainMapperTableManager.cxx
index 3b927642348d..127f9b067c4d 100644
--- a/writerfilter/source/dmapper/DomainMapperTableManager.cxx
+++ b/writerfilter/source/dmapper/DomainMapperTableManager.cxx
@@ -387,6 +387,8 @@ bool DomainMapperTableManager::sprm(Sprm & rSprm)
 
 DomainMapperTableManager::IntVectorPtr const & DomainMapperTableManager::getCurrentGrid( )
 {
+    if (m_aTableGrid.empty())
+        throw std::out_of_range("no current grid");
     return m_aTableGrid.back( );
 }