minilibc:

Fix a bug in time functions


git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1520 bbd45198-f89e-11dd-88c7-29a3b14d5316

1 files changed, 4 insertions, 3 deletions

diff --git a/components/libc/minilibc/time.c b/components/libc/minilibc/time.c
index 602471fb1b..a8595c0fa8 100644
--- a/components/libc/minilibc/time.c
+++ b/components/libc/minilibc/time.c
@@ -70,7 +70,7 @@ struct tm *gmtime_r(const time_t *timep, struct tm *r)
 struct tm* localtime_r(const time_t* t, struct tm* r)

 {

 	time_t tmp;

-	struct timezone tz;

+	struct timezone tz = {0};

 	gettimeofday(0, &tz);

 	timezone = tz.tz_minuteswest * 60L;

 	tmp = *t + timezone;

@@ -134,8 +134,9 @@ time_t timegm(struct tm * const t)
 	 This is not intuitive. Most mktime implementations do not support

 	 dates after 2059, anyway, so we might leave this out for it's

 	 bloat. */

-	if ((years -= 131) >= 0)

+	if (years >= 131)

 	{

+		years -= 131;

 		years /= 100;

 		day -= (years >> 2) * 3 + 1;

 		if ((years &= 3) == 3)

@@ -159,7 +160,7 @@ time_t timegm(struct tm * const t)
 time_t mktime(register struct tm* const t)

 {

 	time_t x = timegm(t);

-	struct timezone tz;

+	struct timezone tz = {0};

 	gettimeofday(0, &tz);

 	timezone = tz.tz_minuteswest * 60L;

 	x += timezone;