From a5324a131f3816c8312e27a9dc928b8d56d8cf3b Mon Sep 17 00:00:00 2001
From: Gael Guennebaud <g.gael@free.fr>
Date: Mon, 26 Oct 2015 16:16:24 +0100
Subject: bug #1092: fix iterative solver ctors for expressions as input

---
 unsupported/Eigen/src/IterativeSolvers/DGMRES.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'unsupported/Eigen/src/IterativeSolvers/DGMRES.h')

diff --git a/unsupported/Eigen/src/IterativeSolvers/DGMRES.h b/unsupported/Eigen/src/IterativeSolvers/DGMRES.h
index 52eb65a2f..ab82e782d 100644
--- a/unsupported/Eigen/src/IterativeSolvers/DGMRES.h
+++ b/unsupported/Eigen/src/IterativeSolvers/DGMRES.h
@@ -134,8 +134,8 @@ class DGMRES : public IterativeSolverBase<DGMRES<_MatrixType,_Preconditioner> >
     * this class becomes invalid. Call compute() to update it with the new
     * matrix A, or modify a copy of A.
     */
-  DGMRES(const MatrixType& A) : Base(A),m_restart(30),m_neig(0),m_r(0),m_maxNeig(5),m_isDeflAllocated(false),m_isDeflInitialized(false)
-  {}
+  template<typename MatrixDerived>
+  explicit DGMRES(const EigenBase<MatrixDerived>& A) : Base(A.derived()), m_restart(30),m_neig(0),m_r(0),m_maxNeig(5),m_isDeflAllocated(false),m_isDeflInitialized(false) {}
 
   ~DGMRES() {}
   
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