--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/sun/security/tools/keytool/trystore.sh	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,65 @@
+#
+# Copyright (c) 2011, 2013, 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
+# under the terms of the GNU General Public License version 2 only, as
+# published by the Free Software Foundation.
+#
+# This code is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+# version 2 for more details (a copy is included in the LICENSE file that
+# accompanied this code).
+#
+# You should have received a copy of the GNU General Public License version
+# 2 along with this work; if not, write to the Free Software Foundation,
+# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+#
+# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+# or visit www.oracle.com if you need additional information or have any
+# questions.
+#
+
+# @test
+# @bug 7047200
+# @summary keytool can try save to a byte array before overwrite the file
+
+if [ "${TESTJAVA}" = "" ] ; then
+  JAVAC_CMD=`which javac`
+  TESTJAVA=`dirname $JAVAC_CMD`/..
+fi
+
+# set platform-dependent variables
+OS=`uname -s`
+case "$OS" in
+  Windows_* )
+    FS="\\"
+    ;;
+  * )
+    FS="/"
+    ;;
+esac
+
+rm trystore.jks 2> /dev/null
+
+KEYTOOL="${TESTJAVA}${FS}bin${FS}keytool ${TESTTOOLVMOPTS} -storetype jks -keystore trystore.jks -keyalg rsa"
+$KEYTOOL -genkeypair -alias a -dname CN=A -storepass changeit -keypass changeit
+$KEYTOOL -genkeypair -alias b -dname CN=B -storepass changeit -keypass changeit
+
+# We use -protected for JKS keystore. This is illegal so the command should
+# fail. Then we can check if the keystore is damaged.
+
+$KEYTOOL -genkeypair -protected -alias b -delete -debug
+
+if [ $? = 0 ]; then
+    echo "What? -protected works for JKS?"
+    exit 1
+fi
+
+$KEYTOOL -list -storepass changeit
+
+if [ $? != 0 ]; then
+    echo "Keystore file damaged"
+    exit 2
+fi