diff -up ext/calendar/jewish.c.old ext/calendar/jewish.c
--- ext/calendar/jewish.c.old	2013-05-22 08:11:57.663604019 +0200
+++ ext/calendar/jewish.c	2013-05-22 08:13:16.560934578 +0200
@@ -272,7 +272,7 @@
 #define HALAKIM_PER_METONIC_CYCLE (HALAKIM_PER_LUNAR_CYCLE * (12 * 19 + 7))
 
 #define JEWISH_SDN_OFFSET 347997
-#define JEWISH_SDN_MAX 38245310 /* year 103759, 100000 A.D. */
+#define JEWISH_SDN_MAX 324542846 /* 12/13/887605, greater value raises interger overflow */
 #define NEW_MOON_OF_CREATION 31524
 
 #define SUNDAY    0
diff -up ext/calendar/tests/jdtojewish64.phpt.old ext/calendar/tests/jdtojewish64.phpt
--- ext/calendar/tests/jdtojewish64.phpt.old	2013-05-21 18:37:45.000000000 +0200
+++ ext/calendar/tests/jdtojewish64.phpt	2013-05-22 08:15:08.113424723 +0200
@@ -1,5 +1,5 @@
 --TEST--
-Integer overflow in SndToJewish leads to php hang 
+Bug #64895: Integer overflow in SndToJewish
 --SKIPIF--
 <?php 
 include 'skipif.inc';
@@ -9,10 +9,11 @@ if (PHP_INT_SIZE == 4) {
 ?>
 --FILE--
 <?php
-$a = array(38245310, 38245311, 9223372036854743639);
+$a = array(38245310, 324542846, 324542847, 9223372036854743639);
 
 foreach ($a as $x) var_dump(jdtojewish($x));
 --EXPECTF--
 string(11) "2/22/103759"
+string(12) "12/13/887605"
 string(5) "0/0/0"
 string(5) "0/0/0"