java.text.MessageFormat.toPattern() causes IndexOutOfBoundsException in
StringBuffer.setLength method
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Key: HARMONY-59
URL: http://issues.apache.org/jira/browse/HARMONY-59
Project: Harmony
Type: Bug
Components: Classlib
Reporter: tatyana doubtsova
Problem details:
According to j2se 1.4.2, method toPattern() should return a pattern
representing the current state of the message format. However, Harmony throws
IndexOutOfBoundsException for "CHOICE {1,choice}" message format.
Code for reproducing Test.java:
import java.text.*;
public class Test {
public static void main(String[] args) {
MessageFormat mf = new MessageFormat("CHOICE
{1,choice}");
String ptrn = mf.toPattern();
System.out.println("ptrn = " + ptrn);
}
}
Steps to Reproduce:
1. Build Harmony (check-out on 2006-01-30) j2se subset as described in
README.txt.
2. Compile Test.java using BEA 1.4 javac
> javac -d . Test.java
3. Run java using compatible VM (J9)
> java -showversion Test
Output:
java version 1.4.2 (subset)
(c) Copyright 1991, 2005 The Apache Software Foundation or its licensors, as
applicable.
Exception in thread "main" java.lang.IndexOutOfBoundsException
at java.lang.StringBuffer.setLength(StringBuffer.java:810)
at java.text.ChoiceFormat.toPattern(ChoiceFormat.java:386)
at java.text.MessageFormat.toPattern(MessageFormat.java:802)
at Test.main(Test.java:5)
Output on BEA 1.4.2 to compare with:
ptrn = CHOICE {1,choice,}
Suggested junit test case:
package org.apache.harmony.tests.java.text;
import java.text.MessageFormat;
import java.util.Locale;
import junit.framework.TestCase;
public class MessageFormatTest extends TestCase {
public static void main(String[] args) {
junit.textui.TestRunner.run(MessageFormatTest.class);
}
public void test_toPattern() {
try {
MessageFormat mf = new MessageFormat("CHOICE {1,choice}");
String ptrn = mf.toPattern();
} catch (Exception e) {
fail("Assert 0: Unexpected exception " + e);
}
}
}
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