From 659087b622e94f7e35a56b7ed2cb01b024c80a7b Mon Sep 17 00:00:00 2001
From: Gael Guennebaud <g.gael@free.fr>
Date: Tue, 7 Mar 2017 10:02:34 +0100
Subject: [PATCH] bug #1400: fix stableNorm with EIGEN_DONT_ALIGN_STATICALLY

---
 Eigen/src/Core/StableNorm.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Eigen/src/Core/StableNorm.h b/Eigen/src/Core/StableNorm.h
index d2fe1e199..be04ed44d 100644
--- a/Eigen/src/Core/StableNorm.h
+++ b/Eigen/src/Core/StableNorm.h
@@ -170,7 +170,8 @@ MatrixBase<Derived>::stableNorm() const
   enum {
     CanAlign = (   (int(DerivedCopyClean::Flags)&DirectAccessBit)
                 || (int(internal::evaluator<DerivedCopyClean>::Alignment)>0) // FIXME Alignment)>0 might not be enough
-               ) && (blockSize*sizeof(Scalar)*2<EIGEN_STACK_ALLOCATION_LIMIT) // ifwe cannot allocate on the stack, then let's not bother about this optimization
+               ) && (blockSize*sizeof(Scalar)*2<EIGEN_STACK_ALLOCATION_LIMIT)
+                 && (EIGEN_MAX_STATIC_ALIGN_BYTES>0) // if we cannot allocate on the stack, then let's not bother about this optimization
   };
   typedef typename internal::conditional<CanAlign, Ref<const Matrix<Scalar,Dynamic,1,0,blockSize,1>, internal::evaluator<DerivedCopyClean>::Alignment>,
                                                    typename DerivedCopyClean::ConstSegmentReturnType>::type SegmentWrapper;