From 95ffdc1db428285568c1b291a9cca9ec3c251edb Mon Sep 17 00:00:00 2001
From: Martin Fuchs <martin-fuchs@gmx.net>
Date: Tue, 11 Feb 2003 22:12:41 +0000
Subject: [PATCH] Fixed time zone calculation.

---
 dlls/kernel/time.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/dlls/kernel/time.c b/dlls/kernel/time.c
index 611f5e4787d..7b1e5640e70 100644
--- a/dlls/kernel/time.c
+++ b/dlls/kernel/time.c
@@ -350,7 +350,6 @@ static BOOL _GetTimezoneBias(
  *
  * RETURNS
  *
- *  Returns true when the local time was calculated.
  *  Returns TRUE when the local time was calculated.
  *
  */
@@ -385,8 +384,8 @@ BOOL WINAPI SystemTimeToTzSpecificLocalTime(
     if (!_GetTimezoneBias(&tzinfo, lpUniversalTime, &lBias))
         return FALSE;
 
-    bias = lBias * 600000000; /* 60 seconds per minute, 100000 [100-nanoseconds-ticks] per second */
-    t += bias;
+    bias = (LONGLONG)lBias * 600000000; /* 60 seconds per minute, 100000 [100-nanoseconds-ticks] per second */
+    t -= bias;
 
     ft.dwLowDateTime  = (UINT)t;
     ft.dwHighDateTime = (UINT)(t >> 32);
@@ -435,8 +434,8 @@ BOOL WINAPI TzSpecificLocalTimeToSystemTime(
     if (!_GetTimezoneBias(&tzinfo, lpUniversalTime, &lBias))
         return FALSE;
 
-    bias = lBias * 600000000; /* 60 seconds per minute, 100000 [100-nanoseconds-ticks] per second */
-    t -= bias;
+    bias = (LONGLONG)lBias * 600000000; /* 60 seconds per minute, 100000 [100-nanoseconds-ticks] per second */
+    t += bias;
 
     ft.dwLowDateTime  = (UINT)t;
     ft.dwHighDateTime = (UINT)(t >> 32);