ofz#4420 avoid signed integer overflow

Change-Id: Id8c52d600350a4469e506395d75619d111160db0

1 files changed, 5 insertions, 1 deletions

diff --git a/src/lib/ABWStylesCollector.cpp b/src/lib/ABWStylesCollector.cpp
index 20848f7..da2fd9e 100644
--- a/src/lib/ABWStylesCollector.cpp
+++ b/src/lib/ABWStylesCollector.cpp
@@ -175,7 +175,11 @@ void libabw::ABWStylesCollector::openCell(const char *props)
       parsePropString(props, m_ps->m_tableStates.top().m_currentCellProperties);
     int currentRow(0);
     if (!findInt(_findCellProperty("top-attach"), currentRow))
-      currentRow = m_ps->m_tableStates.top().m_currentTableRow + 1;
+    {
+      currentRow = m_ps->m_tableStates.top().m_currentTableRow;
+      if (currentRow < std::numeric_limits<int>::max())
+        ++currentRow;
+    }
     if (m_ps->m_tableStates.top().m_currentTableRow < currentRow)
       m_ps->m_tableStates.top().m_currentTableRow = currentRow;