--- a/hotspot/src/share/vm/runtime/java.cpp	Mon Feb 27 23:20:05 2017 +0100
+++ b/hotspot/src/share/vm/runtime/java.cpp	Thu Feb 16 00:50:19 2017 -0800
@@ -719,6 +719,8 @@
     index += rc;
     if (_security > 0) {
       rc = jio_snprintf(&buffer[index], buflen - index, ".%d", _security);
+      if (rc == -1) return;
+      index += rc;
     }
     if (_patch > 0) {
       rc = jio_snprintf(&buffer[index], buflen - index, ".%d", _patch);