1 #!/bin/sh
2
3 #
4 # Copyright (c) 2002, 2014, Oracle and/or its affiliates. All rights reserved.
5 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 #
7 # This code is free software; you can redistribute it and/or modify it
8 # under the terms of the GNU General Public License version 2 only, as
9 # published by the Free Software Foundation.
10 #
11 # This code is distributed in the hope that it will be useful, but WITHOUT
12 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 # version 2 for more details (a copy is included in the LICENSE file that
15 # accompanied this code).
16 #
17 # You should have received a copy of the GNU General Public License version
18 # 2 along with this work; if not, write to the Free Software Foundation,
19 # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 #
21 # Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 # or visit www.oracle.com if you need additional information or have any
23 # questions.
24 #
25
26 # @test
27 # @bug 4724076
28 # @summary Redefine does not work in for/while loop.
29 # The failure occurs when a method is active and
30 # a method that it calls multiple times is redefined
31 # more than once.
32 # @author Jim Holmlund/Swamy Venkataramanappa
33 #
34 # @run shell/timeout=240 RedefineMulti.sh
35
36 compileOptions=-g
37 #java=java_g
38
39 createJavaFile()
40 {
41 cat <<EOF > $1.java.1
42
43 public class $1 {
44
45 String field1;
46 String field2;
47
48 // The first time thru the loop in start,
49 // "Before update..." should be printed.
50 // After the first redefine, "After update..." should be printed
51 // After the 2nd redefine, "abcde..." should be printed.
52 // The bug is that "After update..." is printed instead because
53 // stat() calls version 2 of doSomething() instead of
54 // version 3.
55 private void doSomething() {
56 System.out.println("Before update..."); // @1 commentout
57 // @1 uncomment System.out.println("After update..."); // @2 commentout
58 // @2 uncomment System.out.println("abcde...");
59 }
60
61 public void start() {
62 for (int i=0; i < 3; i++) {
63 doSomething(); // @1 breakpoint here line 16
64 System.out.println("field1 = " + field1);
65 System.out.println("field2 = " + field2);
66 }
67 // Redefinex myx = new Redefinex();
68 // for (int i = 0; i < 5; i++) {
69 // myx.methodx1(); // line 22
70 // System.out.println("fieldx1 = " + myx.fieldx1);
71 // System.out.println("fieldx2 = " + myx.fieldx2);
72 // }
73 }
74
75 public static void main(String[] args) {
76 $1 xxx = new $1();
77 xxx.field1 = "field1";
78 xxx.field2 = "field2";
79 xxx.start();
80 }
81 }
82
83 class Redefinex {
84 public String fieldx1;
85 public String fieldx2;
86
87 Redefinex() {
88 fieldx1 = "fieldx1";
89 fieldx2 = "fieldx2";
90 }
91
92 public void methodx1() {
93 System.out.println("redefinex 1");
94 //System.out.println("redefinex 2");
95 //System.out.println("redefinex 3");
96 }
97
98 }
99
100 /*********
101 Steps to reproduce this problem:
102 a. add line breakpoint in start()
103 b. debug
104 c. when breakpoint is hit, type continue. You should see output
105 "Before update..."
106 d. change "Before update" to "After update"
107 e. redefine, and set line breakpoint (see step a)
108 f. type continue. You should see output "After update"
109 g. change "After update" to "abcde"
110 h. redefine, and set line breakpoint (see step a)
111 i. type continue. The output is shown as "After update"
112
113 j. to see "abcde" output, users will have to pop the stack, and
114 re-execute method start().
115 ************/
116 EOF
117 }
118
119 # This is called to feed cmds to jdb.
120 dojdbCmds()
121 {
122 setBkpts @1
123 runToBkpt @1
124 contToBkpt
125 redefineClass @1
126 setBkpts @1
127 contToBkpt
128 redefineClass @2
129 cmd allowExit cont
130 }
131
132
133 mysetup()
134 {
135 if [ -z "$TESTSRC" ] ; then
136 TESTSRC=.
137 fi
138
139 for ii in . $TESTSRC $TESTSRC/.. ; do
140 if [ -r "$ii/ShellScaffold.sh" ] ; then
141 . $ii/ShellScaffold.sh
142 break
143 fi
144 done
145 }
146
147 # You could replace this next line with the contents
148 # of ShellScaffold.sh and this script will run just the same.
149 mysetup
150
151 runit
152 debuggeeFailIfPresent "Internal exception:"
153 debuggeeFailIfNotPresent "abcde"
154 pass