From 06185754f9a8a87b85df51887064e1e514ee25c8 Mon Sep 17 00:00:00 2001
From: Thomas Schneider <schneith@ethz.ch>
Date: Thu, 9 Apr 2015 13:40:54 +0200
Subject: [PATCH] Fix introduced bug.

---
 gtsam/base/VectorSpace.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/gtsam/base/VectorSpace.h b/gtsam/base/VectorSpace.h
index 23e314c6b..e1f20ea0c 100644
--- a/gtsam/base/VectorSpace.h
+++ b/gtsam/base/VectorSpace.h
@@ -401,7 +401,8 @@ struct DynamicTraits {
     return result;
   }
 
-  static Dynamic Expmap(const TangentVector& /*v*/, ChartJacobian /*H*/) {
+  static Dynamic Expmap(const TangentVector& /*v*/, ChartJacobian H = boost::none) {
+    static_cast<void>(H);
     throw std::runtime_error("Expmap not defined for dynamic types");
   }