Fix inner iterator on an outer-vector

1 files changed, 1 insertions, 0 deletions

diff --git a/Eigen/src/SparseCore/SparseBlock.h b/Eigen/src/SparseCore/SparseBlock.h
index cbcd7a299..491cc72b0 100644
--- a/Eigen/src/SparseCore/SparseBlock.h
+++ b/Eigen/src/SparseCore/SparseBlock.h
@@ -523,6 +523,7 @@ namespace internal {
       while(m_outerPos<m_end)

       {

         m_outerPos++;

+        if(m_outerPos==m_end) break;

         typename XprType::InnerIterator it(m_block.m_matrix, m_outerPos);

         // search for the key m_innerIndex in the current outer-vector

         while(it && it.index() < m_innerIndex) ++it;