From 562985bac44a06c65f560e2628080d1743bfd77f Mon Sep 17 00:00:00 2001
From: Gael Guennebaud <g.gael@free.fr>
Date: Thu, 17 Jan 2019 00:14:27 +0100
Subject: [PATCH] bug #1646: fix false aliasing detection for A.row(0) =
 A.col(0); This changeset completely disable the detection for vectors for
 which are current mechanism cannot detect any positive aliasing anyway.

---
 Eigen/src/Core/Transpose.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Eigen/src/Core/Transpose.h b/Eigen/src/Core/Transpose.h
index 6255a2f6d..91a9ab1b9 100644
--- a/Eigen/src/Core/Transpose.h
+++ b/Eigen/src/Core/Transpose.h
@@ -392,7 +392,7 @@ struct checkTransposeAliasing_impl<Derived, OtherDerived, false>
 template<typename Dst, typename Src>
 void check_for_aliasing(const Dst &dst, const Src &src)
 {
-  if(src.size()>1)
+  if((!Dst::IsVectorAtCompileTime) && dst.rows()>1 && dst.cols()>1)
     internal::checkTransposeAliasing_impl<Dst, Src>::run(dst, src);
 }