Per gmtime manpage, tm_mon is the number of months since January
while MonthNo is the month of the year, so tm_mon should be MonthNo-1.
Similarly, tm_mday is the day of the month, and DayNo is the number
of days since the first day of the month. Assigning DayNo+1 to tm_mday
to fit the definition.
This commit also corrected miscalculated MonthNo and DayNo for the last
day of the month. (Thanks to Laszlo Ersek!)
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Gary Ching-Pang Lin <g...@suse.com>
---
CryptoPkg/Library/BaseCryptLib/SysCall/TimerWrapper.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/CryptoPkg/Library/BaseCryptLib/SysCall/TimerWrapper.c
b/CryptoPkg/Library/BaseCryptLib/SysCall/TimerWrapper.c
index 805e6b4..6422d61 100644
--- a/CryptoPkg/Library/BaseCryptLib/SysCall/TimerWrapper.c
+++ b/CryptoPkg/Library/BaseCryptLib/SysCall/TimerWrapper.c
@@ -148,14 +148,14 @@ struct tm * gmtime (const time_t *timer)
GmTime->tm_yday = (int) DayNo;
for (MonthNo = 12; MonthNo > 1; MonthNo--) {
- if (DayNo > CumulativeDays[IsLeap(Year)][MonthNo]) {
+ if (DayNo >= CumulativeDays[IsLeap(Year)][MonthNo]) {
DayNo = (UINT16) (DayNo - (UINT16)
(CumulativeDays[IsLeap(Year)][MonthNo]));
break;
}
}
- GmTime->tm_mon = (int) MonthNo;
- GmTime->tm_mday = (int) DayNo;
+ GmTime->tm_mon = (int) MonthNo - 1;
+ GmTime->tm_mday = (int) DayNo + 1;
GmTime->tm_isdst = 0;
GmTime->tm_gmtoff = 0;
--
1.8.1.4
------------------------------------------------------------------------------
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