Alexandre Julliard : ntdll: Match a timezone change happening at 23:59:59 with the following day.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 501ac4d496e9fb10fab3ec7c891ae2ce530e2b94
URL:    https://gitlab.winehq.org/wine/wine/-/commit/501ac4d496e9fb10fab3ec7c891ae2c...

Author: Alexandre Julliard 
Date:   Mon Dec 19 16:37:25 2022 +0100

ntdll: Match a timezone change happening at 23:59:59 with the following day.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=53595

---

dlls/ntdll/unix/system.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/dlls/ntdll/unix/system.c b/dlls/ntdll/unix/system.c
index b9be2f53752..b9762fd278f 100644
--- a/dlls/ntdll/unix/system.c
+++ b/dlls/ntdll/unix/system.c
@@ -2039,6 +2039,11 @@ static BOOL match_tz_date( const RTL_SYSTEM_TIME *st, const RTL_SYSTEM_TIME *reg
     if (!reg_st->wYear) /* date in a day-of-week format */
         wDay = weekday_to_mday(st->wYear - 1900, reg_st->wDay, reg_st->wMonth - 1, reg_st->wDayOfWeek);

+    /* special case for 23:59:59.999, match with 0:00:00.000 on the following day */
+    if (!reg_st->wYear && reg_st->wHour == 23 && reg_st->wMinute == 59 &&
+        reg_st->wSecond == 59 && reg_st->wMilliseconds == 999)
+        return (st->wDay == wDay + 1 && !st->wHour && !st->wMinute && !st->wSecond && !st->wMilliseconds);
+
     return (st->wDay == wDay &&
             st->wHour == reg_st->wHour &&
             st->wMinute == reg_st->wMinute &&