From cf8895cd1476c26e7a8a787ddd2abfb8ec009125 Mon Sep 17 00:00:00 2001
From: denchat <19730041+denchat@users.noreply.github.com>
Date: Thu, 8 Apr 2021 13:04:26 +0700
Subject: [PATCH] Suppress redef warning of _CRT_SECURE_NO_WARNINGS

Suppress redef warning of _CRT_SECURE_NO_WARNINGS if any.
---
 test/chrono-test.cc | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/test/chrono-test.cc b/test/chrono-test.cc
index b27710ca..70ff0a98 100644
--- a/test/chrono-test.cc
+++ b/test/chrono-test.cc
@@ -6,7 +6,9 @@
 // For the license information refer to format.h.
 
 #ifdef WIN32
-#  define _CRT_SECURE_NO_WARNINGS
+#  ifndef _CRT_SECURE_NO_WARNINGS
+#    define _CRT_SECURE_NO_WARNINGS
+#  endif
 #endif
 
 #include "fmt/chrono.h"