From 8a22b6a096c30cc4a6d37158db24c61ff499ecaf Mon Sep 17 00:00:00 2001
From: Francesco Lannutti <nicolati@fastwebnet.it>
Date: Sun, 3 Jul 2016 01:36:26 +0200
Subject: [PATCH] Handling the general case for an empty CSC matrix during the
 conversion to CSR format

---
 src/maths/KLU/klu_utils.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/maths/KLU/klu_utils.c b/src/maths/KLU/klu_utils.c
index 395bfa522..be82f57c8 100644
--- a/src/maths/KLU/klu_utils.c
+++ b/src/maths/KLU/klu_utils.c
@@ -88,8 +88,11 @@ KLU_convert_matrix_in_CSR         /* return TRUE if successful, FALSE otherwise
     {
         if (Ai_CSC == NULL || Ax_CSC == NULL)
         {
-            Ap_CSR [0] = 0 ;
-            Ap_CSR [1] = 0 ;
+            /* CSC Matrix is empty, so the CSR one */
+            for (i = 0 ; i <= n ; i++)
+            {
+                Ap_CSR [i] = 0 ;
+            }
             Common->status = KLU_OK ;
             return (TRUE) ;
         }