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#!/bin/sh
#
# Copyright (c) 2006, 2014, 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 6270982
# @summary Redefine a class so that the order of external classes in
# the constant pool are changed.
# @author dcubed
#
# @run shell RedefineChangeClassOrder.sh
compileOptions=-g
# Would like to run this test with this option:
# -XX:-FailOverToOldVerifier
# Uncomment this to see the JDI trace
#jdbOptions=-dbgtrace
createJavaFile()
{
cat <<EOF > $1.java.1
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
public class $1 {
public static void main(String[] args) {
new $1().hi(false);
new $1().hi(true); // @1 breakpoint
}
public void hi(boolean expected) {
boolean isNewVersion = false; // @1 commentout
// @1 uncomment boolean isNewVersion = true;
if (expected == isNewVersion) {
System.out.println("PASS: expected and isNewVersion match.");
} else {
System.out.println("FAIL: expected and isNewVersion do not match.");
System.out.println("expected=" + expected
+ " isNewVersion=" + isNewVersion);
}
Foo1 foo1 = new Foo1(); // @1 commentout
foo1.hi(); // @1 commentout
// This Hack code block exists to force some verification_type_info
// objects of subtype Object_variable_info into the StackMapTable.
//
// In the redefined code, the above Foo1 code is effectively
// moved after the Foo2 code below which causes things to be
// layed out in a different order in the constant pool. The
// cpool_index in the Object_variable_info has to be updated
// in the redefined code's StackMapTable to refer to right
/// constant pool index in the merged constant pool.
Hack hack = getClass().getAnnotation(Hack.class);
if (hack != null) {
String class_annotation = hack.value();
System.out.println("class annotation is: " + class_annotation);
if (isNewVersion) {
if (class_annotation.equals("JUNK")) {
System.out.println("class_annotation is JUNK.");
} else {
System.out.println("class_annotation is NOT JUNK.");
}
}
}
Foo2 foo2 = new Foo2();
foo2.hi();
// @1 uncomment Foo1 foo1 = new Foo1();
// @1 uncomment foo1.hi();
}
}
class Foo1 {
public void hi() {
System.out.println("Hello from " + getClass());
}
}
class Foo2 {
public void hi() {
System.out.println("Hello from " + getClass());
}
}
@Retention(RetentionPolicy.RUNTIME)
@interface Hack {
String value();
}
EOF
}
# This is called to feed cmds to jdb.
dojdbCmds()
{
setBkpts @1
runToBkpt @1
redefineClass @1
cmd allowExit cont
}
mysetup()
{
if [ -z "$TESTSRC" ] ; then
TESTSRC=.
fi
for ii in . $TESTSRC $TESTSRC/.. ; do
if [ -r "$ii/ShellScaffold.sh" ] ; then
. $ii/ShellScaffold.sh
break
fi
done
}
# You could replace this next line with the contents
# of ShellScaffold.sh and this script will run just the same.
mysetup
runit
debuggeeFailIfPresent 'FAIL:'
pass
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