From 682898ae2ba4690e7caf126aac3dd7c7b3b0e9c8 Mon Sep 17 00:00:00 2001
From: Scott McKay <skottmckay@gmail.com>
Date: Tue, 20 Oct 2020 18:00:57 +1000
Subject: [PATCH] Add #include for std::tolower. Fixes VS2017 build error.
 (#5544)

---
 onnxruntime/core/flatbuffers/flatbuffers_utils.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/onnxruntime/core/flatbuffers/flatbuffers_utils.h b/onnxruntime/core/flatbuffers/flatbuffers_utils.h
index 4bbcd02c50..58064c63e3 100644
--- a/onnxruntime/core/flatbuffers/flatbuffers_utils.h
+++ b/onnxruntime/core/flatbuffers/flatbuffers_utils.h
@@ -3,6 +3,7 @@
 
 #pragma once
 
+#include <cctype>
 #include <unordered_map>
 #include <core/common/status.h>