From fba7f29a7d5e649d91ac1edd09b70ee28b22743e Mon Sep 17 00:00:00 2001
From: Leah Neukirchen <leah@vuxu.org>
Date: Thu, 3 May 2018 18:42:18 +0200
Subject: unset tm_isdst before doing date operations

Else mktime(3) can change tm_hour due to DST change.
---
 snooze.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/snooze.c b/snooze.c
index c08cdc3..1dda3eb 100644
--- a/snooze.c
+++ b/snooze.c
@@ -182,11 +182,14 @@ next_day:
 			tm->tm_mday++;
 		}
 
+		tm->tm_isdst = -1;
 		tm->tm_sec = 0;
 		tm->tm_min = 0;
 		tm->tm_hour = 0;
 
 		t = mktime(tm);
+		tm->tm_isdst = -1;
+
 		if (t > from+(366*24*60*60))  // no result within a year
 			return -1;
 	}
-- 
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