From 6f3785b4b75b8cc17d9803092530a154b722e176 Mon Sep 17 00:00:00 2001
From: Ivan Grokhotkov <ivan@espressif.com>
Date: Mon, 13 Jun 2016 15:29:05 +0800
Subject: [PATCH] sntp_localtime: return -1 in tm_isdst field (#2010)

---
 tools/sdk/lwip/src/core/sntp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/sdk/lwip/src/core/sntp.c b/tools/sdk/lwip/src/core/sntp.c
index 677de93b2..745ba399c 100644
--- a/tools/sdk/lwip/src/core/sntp.c
+++ b/tools/sdk/lwip/src/core/sntp.c
@@ -438,7 +438,7 @@ sntp_mktm_r(const time_t * tim_p ,struct tm *res ,int is_gmtime)
 //	    res->tm_isdst = -1;
 //	}
 //      else
-	res->tm_isdst = 0;
+      res->tm_isdst = -1;
 
       offset = (res->tm_isdst == 1 ? sntp__tzrule[1].offset : sntp__tzrule[0].offset);