3 files changed, 5 insertions, 0 deletions
diff --git a/newlib/libc/time/lcltime_r.c b/newlib/libc/time/lcltime_r.c
index 9094e5d3a..8a69e40ee 100644
--- a/newlib/libc/time/lcltime_r.c
+++ b/newlib/libc/time/lcltime_r.c
@@ -31,6 +31,7 @@ _DEFUN (localtime_r, (tim_p, res),
   year = res->tm_year + YEAR_BASE;
   ip = __month_lengths[isleap(year)];
 
+  tzset ();
   TZ_LOCK;
   if (_daylight)
     {
diff --git a/newlib/libc/time/mktime.c b/newlib/libc/time/mktime.c
index 5bedf5afc..8669fbdfb 100644
--- a/newlib/libc/time/mktime.c
+++ b/newlib/libc/time/mktime.c
@@ -197,6 +197,8 @@ _DEFUN(mktime, (tim_p),
   /* compute total seconds */
   tim += (days * _SEC_IN_DAY);
 
+  tzset ();
+
   TZ_LOCK;
 
   if (_daylight)
diff --git a/newlib/libc/time/strftime.c b/newlib/libc/time/strftime.c
index ee604c2e4..72f06d32e 100644
--- a/newlib/libc/time/strftime.c
+++ b/newlib/libc/time/strftime.c
@@ -1283,6 +1283,7 @@ recurse:
           if (tim_p->tm_isdst >= 0)
             {
 	      long offset;
+	      tzset ();
 
 #if defined (__CYGWIN__)
 	      /* Cygwin must check if the application has been built with or
@@ -1313,6 +1314,7 @@ recurse:
 	      size_t size;
 	      const char *tznam = NULL;
 
+	      tzset ();
 	      TZ_LOCK;
 #if defined (__CYGWIN__)
 	      /* See above. */