--- a/jdk/make/sun/net/Makefile	Thu Sep 15 14:10:30 2011 +0100
+++ b/jdk/make/sun/net/Makefile	Fri Sep 16 12:09:04 2011 -0700
@@ -1,5 +1,5 @@
 #
-# Copyright (c) 1995, 2010, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 1995, 2011, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -26,6 +26,8 @@
 BUILDDIR = ../..
 PACKAGE = sun.net
 PRODUCT = sun
+SUBDIRS_MAKEFLAGS += JAVAC_MAX_WARNINGS=true
+SUBDIRS_MAKEFLAGS += JAVAC_WARNINGS_FATAL=true
 include $(BUILDDIR)/common/Defs.gmk
 
 SUBDIRS = others spi