[Bug 2449] New: bug in dlls/kernel/time.c. incorrect time conversion in TzSpecificLocalTimeToSystemTime

[Wine Bugs]

http://bugs.winehq.org/show_bug.cgi?id=2449

Summary: bug in dlls/kernel/time.c. incorrect time conversion in
                    TzSpecificLocalTimeToSystemTime
           Product: Wine
           Version: 20040813
          Platform: All
        OS/Version: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: wine-kernel
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]

a quote from your source:

if (!SystemTimeToFileTime(lpLocalTime, &ft))
        return FALSE;

t = ft.dwHighDateTime;
    t <<= 32;
    t += (UINT)ft.dwLowDateTime;

if (!_GetTimezoneBias(&tzinfo, &lpLocalTime, &lBias))
        return FALSE;

you pass LocalTime to _GetTimeZoneBias, instead of systemtime.
Yes, we can't figure if it is daylight or standard time in one hour between
daylight->standard change 02:00-03:00, its ok. In original version
we had such error in Bias+DaylightBias interval (up to 24 hours, 4 hours for 
moscow - for example),
so I reduced error period to DaylightBias (1 hour). Now it doesn't depend on time 
zone.

my version:

LONGLONG t2;
SYSTEMTIME st;

t2 = t + (LONGLONG)tzinfo.Bias * 600000000;
    if (!FileTimeToSystemTime((FILETIME*)&t2, &st))
        return FALSE;
    if (!_GetTimezoneBias(&tzinfo, &st, &lBias))
        return FALSE;