From 1b2dcf9a4742644e86a3da10d8b027c841ae9861 Mon Sep 17 00:00:00 2001
From: Gael Guennebaud <g.gael@free.fr>
Date: Fri, 10 Nov 2017 10:26:09 +0100
Subject: [PATCH] Check that Schur decomposition succeed.

---
 unsupported/Eigen/src/MatrixFunctions/MatrixFunction.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/unsupported/Eigen/src/MatrixFunctions/MatrixFunction.h b/unsupported/Eigen/src/MatrixFunctions/MatrixFunction.h
index 3f7d77710..ef50c46a9 100644
--- a/unsupported/Eigen/src/MatrixFunctions/MatrixFunction.h
+++ b/unsupported/Eigen/src/MatrixFunctions/MatrixFunction.h
@@ -428,7 +428,8 @@ struct matrix_function_compute<MatrixType, 1>
     typedef internal::traits<MatrixType> Traits;
     
     // compute Schur decomposition of A
-    const ComplexSchur<MatrixType> schurOfA(A);  
+    const ComplexSchur<MatrixType> schurOfA(A);
+    eigen_assert(schurOfA.info()==Success);
     MatrixType T = schurOfA.matrixT();
     MatrixType U = schurOfA.matrixU();