diff --git a/Eigen/src/SparseCore/AmbiVector.h b/Eigen/src/SparseCore/AmbiVector.h
index e0295f2af..2cb7747cc 100644
--- a/Eigen/src/SparseCore/AmbiVector.h
+++ b/Eigen/src/SparseCore/AmbiVector.h
@@ -28,7 +28,7 @@ class AmbiVector
     typedef typename NumTraits<Scalar>::Real RealScalar;
 
     explicit AmbiVector(Index size)
-      : m_buffer(0), m_zero(0), m_size(0), m_allocatedSize(0), m_allocatedElements(0), m_mode(-1)
+      : m_buffer(0), m_zero(0), m_size(0), m_end(0), m_allocatedSize(0), m_allocatedElements(0), m_mode(-1)
     {
       resize(size);
     }
@@ -147,7 +147,8 @@ template<typename _Scalar,typename _StorageIndex>
 void AmbiVector<_Scalar,_StorageIndex>::init(int mode)
 {
   m_mode = mode;
-  if (m_mode==IsSparse)
+  // This is only necessary in sparse mode, but we set these unconditionally to avoid some maybe-uninitialized warnings
+  // if (m_mode==IsSparse)
   {
     m_llSize = 0;
     m_llStart = -1;
diff --git a/test/bdcsvd.cpp b/test/bdcsvd.cpp
index 6c7b09696..3ca273635 100644
--- a/test/bdcsvd.cpp
+++ b/test/bdcsvd.cpp
@@ -28,9 +28,13 @@
 template<typename MatrixType>
 void bdcsvd(const MatrixType& a = MatrixType(), bool pickrandom = true)
 {
-  MatrixType m = a;
-  if(pickrandom)
+  MatrixType m;
+  if(pickrandom) {
+    m.resizeLike(a);
     svd_fill_random(m);
+  }
+  else
+    m = a;
 
   CALL_SUBTEST(( svd_test_all_computation_options<BDCSVD<MatrixType> >(m, false)  ));
 }