From 66e1619214a1c1e79100b1231a60c5c30a3036b8 Mon Sep 17 00:00:00 2001
From: cbeall3 <cbeall3@gatech.edu>
Date: Mon, 26 Oct 2015 22:14:52 -0400
Subject: [PATCH] Attempt to fix TBB issue

---
 gtsam/geometry/Unit3.h | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/gtsam/geometry/Unit3.h b/gtsam/geometry/Unit3.h
index b7d359f40..428211c6b 100644
--- a/gtsam/geometry/Unit3.h
+++ b/gtsam/geometry/Unit3.h
@@ -87,6 +87,17 @@ public:
     p_.normalize();
   }
 
+  /// Copy constructor
+  Unit3(const Unit3& u) {
+    p_ = u.p_;
+  }
+
+  /// Copy assignment
+  Unit3& operator=(const Unit3 & u) {
+    p_ = u.p_;
+    return *this;
+  }
+
   /// Named constructor from Point3 with optional Jacobian
   static Unit3 FromPoint3(const Point3& point, //
       OptionalJacobian<2, 3> H = boost::none);