--- old/src/share/vm/utilities/ostream.cpp	2016-08-04 08:31:46.395094653 -0400
+++ new/src/share/vm/utilities/ostream.cpp	2016-08-04 08:31:44.657438793 -0400
@@ -703,13 +703,15 @@
       // System properties don't generally contain newlines, so don't bother with unparsing.
       outputStream *text = xs->text();
       for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) {
-        // Print in two stages to avoid problems with long
-        // keys/values.
         assert(p->key() != NULL, "p->key() is NULL");
-        text->print_raw(p->key());
-        text->put('=');
-        assert(p->value() != NULL, "p->value() is NULL");
-        text->print_raw_cr(p->value());
+        if (p->is_readable()) {
+          // Print in two stages to avoid problems with long
+          // keys/values.
+          text->print_raw(p->key());
+          text->put('=');
+          assert(p->value() != NULL, "p->value() is NULL");
+          text->print_raw_cr(p->value());
+        }
       }
       xs->tail("properties");
     }