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-rw-r--r--time/Makefile2
-rw-r--r--time/tst-posixtz.c55
-rw-r--r--time/tzset.c2
3 files changed, 57 insertions, 2 deletions
diff --git a/time/Makefile b/time/Makefile
index 170639d884..7620d622a1 100644
--- a/time/Makefile
+++ b/time/Makefile
@@ -30,7 +30,7 @@ routines := offtime asctime clock ctime ctime_r difftime \
 	    stime dysize timegm ftime			 \
 	    strptime getdate strfxtime
 
-tests	:= test_time clocktest
+tests	:= test_time clocktest tst-posixtz
 
 include ../Rules
 
diff --git a/time/tst-posixtz.c b/time/tst-posixtz.c
new file mode 100644
index 0000000000..00a16499f3
--- /dev/null
+++ b/time/tst-posixtz.c
@@ -0,0 +1,55 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+
+struct
+{
+  time_t when;
+  const char *tz;
+  const char *result;
+} tests[] =
+{
+  { 909312849L, "AEST-10AEDST-11,M10.5.0,M3.5.0",
+    "1998/10/25 21:54:09 dst=1 zone=AEDST" },
+  { 924864849L, "AEST-10AEDST-11,M10.5.0,M3.5.0",
+    "1999/04/23 20:54:09 dst=0 zone=AEST" },
+};
+
+int
+main (void)
+{
+  int result = 0;
+  int cnt;
+
+  for (cnt = 0; cnt < sizeof (tests) / sizeof (tests[0]); ++cnt)
+    {
+      char buf[100];
+      struct tm *tmp;
+
+      printf ("TZ = \"%s\", time = %ld => ", tests[cnt].tz, tests[cnt].when);
+      fflush (stdout);
+
+      setenv ("TZ", tests[cnt].tz, 1);
+
+      tmp = localtime (&tests[cnt].when);
+
+      snprintf (buf, sizeof (buf),
+		"%04d/%02d/%02d %02d:%02d:%02d dst=%d zone=%s",
+		tmp->tm_year + 1900, tmp->tm_mon + 1, tmp->tm_mday,
+		tmp->tm_hour, tmp->tm_min, tmp->tm_sec, tmp->tm_isdst,
+		tzname[tmp->tm_isdst ? 1 : 0]);
+
+      fputs (buf, stdout);
+
+      if (strcmp (buf, tests[cnt].result) == 0)
+	puts (", OK");
+      else
+	{
+	  result = 1;
+	  puts (", FAIL");
+	}
+    }
+
+  return result;
+}
diff --git a/time/tzset.c b/time/tzset.c
index 6b9f93239b..92e22083d5 100644
--- a/time/tzset.c
+++ b/time/tzset.c
@@ -524,7 +524,7 @@ tz_compute (timer, tm)
      For the later the daylight saving time ends in the next year.
      It is easier to detect this after first computing the time for the
      wrong year since now we simply can compare the times to switch.  */
-  if (tz_rules[0].change < tz_rules[1].change
+  if (tz_rules[0].change > tz_rules[1].change
       && ! compute_change (&tz_rules[1], 1900 + tm->tm_year + 1))
     return 0;