--- old/src/java.base/share/classes/java/util/zip/ZipUtils.java	2015-07-15 18:58:25.000000000 +0000
+++ new/src/java.base/share/classes/java/util/zip/ZipUtils.java	2015-07-15 18:58:24.000000000 +0000
@@ -99,9 +99,9 @@
         if (year < 1980) {
             return ZipEntry.DOSTIME_BEFORE_1980;
         }
-        return (year - 1980) << 25 | (d.getMonth() + 1) << 21 |
-               d.getDate() << 16 | d.getHours() << 11 | d.getMinutes() << 5 |
-               d.getSeconds() >> 1;
+        return ((year - 1980) << 25 | (d.getMonth() + 1) << 21 |
+                d.getDate() << 16 | d.getHours() << 11 | d.getMinutes() << 5 |
+                d.getSeconds() >> 1) & 0xffffffffL;
     }
 
     /**