From e89029b939ffe15683571cf1b2be3fbc5aa596ef Mon Sep 17 00:00:00 2001
From: "Kuljit S. Virk" <kuljitvirk@gmail.com>
Date: Thu, 16 Dec 2021 19:26:34 -0800
Subject: [PATCH] Fixed bug in SparseDirectUMFPACK #12916

---
 source/lac/sparse_direct.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/source/lac/sparse_direct.cc b/source/lac/sparse_direct.cc
index 44a3232fbc..c34239b21a 100644
--- a/source/lac/sparse_direct.cc
+++ b/source/lac/sparse_direct.cc
@@ -199,7 +199,7 @@ SparseDirectUMFPACK::sort_arrays(const BlockSparseMatrix<number> &matrix)
 
               std::swap(Ax[element], Ax[element + 1]);
               if (numbers::NumberTraits<number>::is_complex == true)
-                std::swap(Az[cursor], Az[cursor + 1]);
+                std::swap(Az[element], Az[element + 1]);
 
               ++element;
             }
-- 
2.39.5