From 1a591ace59541ea1a24b4b356d689afef5d465fc Mon Sep 17 00:00:00 2001
From: ShuangLiu1992 <ShuangLiu1992@users.noreply.github.com>
Date: Sat, 29 Apr 2023 22:10:36 +0100
Subject: [PATCH] Fix JacobianFactor and HessianFactor on platforms where
 Eigen::Index is not the same size as gtsam::Key

Fix JacobianFactor and HessianFactor on platforms where Eigen::Index is not the same size as gtsam::Key

Eigen::Index is defined as std::ptrdiff_t (size_t), which is not always the same size as gtsam::Key (uint64)
---
 gtsam/linear/JacobianFactor.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/gtsam/linear/JacobianFactor.cpp b/gtsam/linear/JacobianFactor.cpp
index 579f6cbc2..3cfb5ce7b 100644
--- a/gtsam/linear/JacobianFactor.cpp
+++ b/gtsam/linear/JacobianFactor.cpp
@@ -40,8 +40,8 @@ using namespace std;
 namespace gtsam {
 
 // Typedefs used in constructors below.
-using Dims = std::vector<Eigen::Index>;
-using Pairs = std::vector<std::pair<Eigen::Index, Matrix>>;
+using Dims = std::vector<Key>;
+using Pairs = std::vector<std::pair<Key, Matrix>>;
 
 /* ************************************************************************* */
 JacobianFactor::JacobianFactor() :