diff --git a/Eigen/src/SparseCore/SparseMatrix.h b/Eigen/src/SparseCore/SparseMatrix.h
index 24ecce8bc..9cea4ca69 100644
--- a/Eigen/src/SparseCore/SparseMatrix.h
+++ b/Eigen/src/SparseCore/SparseMatrix.h
@@ -678,18 +678,33 @@ class SparseMatrix
     {
       EIGEN_DBG_SPARSE(
         s << "Nonzero entries:\n";
-        for (Index i=0; i<m.nonZeros(); ++i)
-        {
-          s << "(" << m.m_data.value(i) << "," << m.m_data.index(i) << ") ";
-        }
+        if(m.isCompressed())
+          for (Index i=0; i<m.nonZeros(); ++i)
+            s << "(" << m.m_data.value(i) << "," << m.m_data.index(i) << ") ";
+        else
+          for (Index i=0; i<m.outerSize(); ++i)
+          {
+            int p = m.m_outerIndex[i];
+            int pe = m.m_outerIndex[i]+m.m_innerNonZeros[i];
+            Index k=p;
+            for (; k<pe; ++k)
+              s << "(" << m.m_data.value(k) << "," << m.m_data.index(k) << ") ";
+            for (; k<m.m_outerIndex[i+1]; ++k)
+              s << "(_,_) ";
+          }
         s << std::endl;
         s << std::endl;
-        s << "Column pointers:\n";
+        s << "Outer pointers:\n";
         for (Index i=0; i<m.outerSize(); ++i)
-        {
           s << m.m_outerIndex[i] << " ";
-        }
         s << " $" << std::endl;
+        if(!m.isCompressed())
+        {
+          s << "Inner non zeros:\n";
+          for (Index i=0; i<m.outerSize(); ++i)
+            s << m.m_innerNonZeros[i] << " ";
+          s << " $" << std::endl;
+        }
         s << std::endl;
       );
       s << static_cast<const SparseMatrixBase<SparseMatrix>&>(m);
diff --git a/Eigen/src/SparseCore/SparseMatrixBase.h b/Eigen/src/SparseCore/SparseMatrixBase.h
index 7f5532fd4..536b6d596 100644
--- a/Eigen/src/SparseCore/SparseMatrixBase.h
+++ b/Eigen/src/SparseCore/SparseMatrixBase.h
@@ -308,7 +308,7 @@ template<typename Derived> class SparseMatrixBase : public EigenBase<Derived>
         else
         {
           SparseMatrix<Scalar, RowMajorBit> trans = m.derived();
-          s << trans;
+          s << static_cast<const SparseMatrixBase<SparseMatrix<Scalar, RowMajorBit> >&>(trans);
         }
       }
       return s;