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-rw-r--r--time/mktime.c14
1 files changed, 12 insertions, 2 deletions
diff --git a/time/mktime.c b/time/mktime.c
index 5632f14b78..1aec223e0e 100644
--- a/time/mktime.c
+++ b/time/mktime.c
@@ -259,8 +259,10 @@ __mktime_internal (struct tm *tp,
 
   int sec_requested = sec;
 
-  /* Only years after 1970 are defined.  */
-  if (year < 70)
+  /* Only years after 1970 are defined.
+     If year is 69, it might still be representable due to
+     timezone differences.  */
+  if (year < 69)
     return -1;
 
 #if LEAP_SECONDS_POSSIBLE
@@ -370,6 +372,14 @@ __mktime_internal (struct tm *tp,
 	return -1;
     }
 
+  if (year == 69)
+    {
+      /* If year was 69, need to check whether the time was representable
+	 or not.  */
+      if (t < 0 || t > 2 * 24 * 60 * 60)
+	return -1;
+    }
+
   *tp = tm;
   return t;
 }