From da584912b62742b6c4f453fb42eef863e406082d Mon Sep 17 00:00:00 2001
From: Gael Guennebaud <g.gael@free.fr>
Date: Mon, 24 Nov 2014 17:31:59 +0100
Subject: [PATCH] Fix memory pre-allocation when permuting inner vectors of a
 sparse matrix.

---
 Eigen/src/SparseCore/SparsePermutation.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Eigen/src/SparseCore/SparsePermutation.h b/Eigen/src/SparseCore/SparsePermutation.h
index 3bfa2ae1b..21411f232 100644
--- a/Eigen/src/SparseCore/SparsePermutation.h
+++ b/Eigen/src/SparseCore/SparsePermutation.h
@@ -61,7 +61,7 @@ struct permut_sparsematrix_product_retval
         for(Index j=0; j<m_matrix.outerSize(); ++j)
         {
           Index jp = m_permutation.indices().coeff(j);
-          sizes[((Side==OnTheLeft) ^ Transposed) ? jp : j] = m_matrix.innerVector(((Side==OnTheRight) ^ Transposed) ? jp : j).size();
+          sizes[((Side==OnTheLeft) ^ Transposed) ? jp : j] = m_matrix.innerVector(((Side==OnTheRight) ^ Transposed) ? jp : j).nonZeros();
         }
         tmp.reserve(sizes);
         for(Index j=0; j<m_matrix.outerSize(); ++j)