diff --git a/Eigen/src/Cholesky/LDLT.h b/Eigen/src/Cholesky/LDLT.h
index 68e54b1d4..5edc9b472 100644
--- a/Eigen/src/Cholesky/LDLT.h
+++ b/Eigen/src/Cholesky/LDLT.h
@@ -534,8 +534,7 @@ template<typename Derived>
 bool LDLT<MatrixType,_UpLo>::solveInPlace(MatrixBase<Derived> &bAndX) const
 {
   eigen_assert(m_isInitialized && "LDLT is not initialized.");
-  const Index size = m_matrix.rows();
-  eigen_assert(size == bAndX.rows());
+  eigen_assert(m_matrix.rows() == bAndX.rows());
 
   bAndX = this->solve(bAndX);
 
diff --git a/Eigen/src/SparseCore/SparseSelfAdjointView.h b/Eigen/src/SparseCore/SparseSelfAdjointView.h
index 86ec0a6c5..1162c6911 100644
--- a/Eigen/src/SparseCore/SparseSelfAdjointView.h
+++ b/Eigen/src/SparseCore/SparseSelfAdjointView.h
@@ -209,6 +209,7 @@ class SparseSelfAdjointTimeDenseProduct
 
     template<typename Dest> void scaleAndAddTo(Dest& dest, Scalar alpha) const
     {
+      EIGEN_ONLY_USED_FOR_DEBUG(alpha);
       // TODO use alpha
       eigen_assert(alpha==Scalar(1) && "alpha != 1 is not implemented yet, sorry");
       typedef typename internal::remove_all<Lhs>::type _Lhs;
diff --git a/Eigen/src/SparseCore/SparseVector.h b/Eigen/src/SparseCore/SparseVector.h
index c952f6540..1e156e411 100644
--- a/Eigen/src/SparseCore/SparseVector.h
+++ b/Eigen/src/SparseCore/SparseVector.h
@@ -202,7 +202,7 @@ class SparseVector
     }
 
     inline SparseVector(const SparseVector& other)
-      : m_size(0)
+      : SparseBase(other), m_size(0)
     {
       *this = other.derived();
     }