From a60bac2bc7926c074f03b29372ecfddd9d937f53 Mon Sep 17 00:00:00 2001
From: acxz <17132214+acxz@users.noreply.github.com>
Date: Mon, 14 Jun 2021 02:31:35 -0400
Subject: [PATCH] use size_t variable type

---
 gtsam/nonlinear/NonlinearFactorGraph.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gtsam/nonlinear/NonlinearFactorGraph.cpp b/gtsam/nonlinear/NonlinearFactorGraph.cpp
index 42fe5ae57d..8e4cf277c2 100644
--- a/gtsam/nonlinear/NonlinearFactorGraph.cpp
+++ b/gtsam/nonlinear/NonlinearFactorGraph.cpp
@@ -354,7 +354,7 @@ GaussianFactorGraph::shared_ptr NonlinearFactorGraph::linearize(const Values& li
     _LinearizeOneFactor(*this, linearizationPoint, *linearFG));
 
   // Linearize all non-sendable factors
-  for(int i = 0; i < size(); i++) {
+  for(size_t i = 0; i < size(); i++) {
     auto& factor = (*this)[i];
     if(factor && !(factor->sendable())) {
       (*linearFG)[i] = factor->linearize(linearizationPoint);