[ http://issues.apache.org/jira/browse/HARMONY-90?page=all ]
Tim Ellison reassigned HARMONY-90:
----------------------------------
Assign To: Tim Ellison
> StringBuffer.setLength(int) doesn't throw IndexOutOfBoundsException if the
> argument is negative
> -----------------------------------------------------------------------------------------------
>
> Key: HARMONY-90
> URL: http://issues.apache.org/jira/browse/HARMONY-90
> Project: Harmony
> Type: Bug
> Components: Classlib
> Reporter: Svetlana Samoilenko
> Assignee: Tim Ellison
>
> According to j2se 1.4.2 and 1.5 specification
> java.lang.StringBuffer.setLength(int) must throw IndexOutOfBoundsException if
> the argument is negative
> Code to reproduce:
> public class test2 {
> public static void main(String[] args) throws Exception {
> StringBuffer buffer = new StringBuffer("abcde");
> try {
> buffer.setLength(-1);
> System.out.println("FAIL. IndexOutOfBoundsException must be
> thrown.");
> } catch (IndexOutOfBoundsException e) {
> System.out.println("PASS. "+e);
> }
> }
> }
> Steps to Reproduce:
> 1. Build Harmony (check-out on 2006-01-30) j2se subset as described in
> README.txt.
> 2. Compile test2.java using BEA 1.4 javac
> > javac -d . test2.java
> 3. Run java using compatible VM (J9)
> > java -showversion test2
> Output:
> C:\tmp>C:\jrockit-j2sdk1.4.2_04\bin\java.exe -showversion test2
> java version "1.4.2_04"
> Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_04-b05)
> BEA WebLogic JRockit(TM) 1.4.2_04 JVM (build
> ari-31788-20040616-1132-win-ia32, Native Threads, GC strategy: parallel)
> PASS. java.lang.StringIndexOutOfBoundsException: String index out of range: -1
> C:\tmp>C:\harmony\trunk\deploy\jre\bin\java -showversion test2
> (c) Copyright 1991, 2005 The Apache Software Foundation or its licensors, as
> applicable.
> FAIL. IndexOutOfBoundsException must be thrown
> Suggected fix:
> Index: trunk/modules/luni/src/main/java/java/lang/StringBuffer.java
> ===================================================================
> --- trunk/modules/luni/src/main/java/java/lang/StringBuffer.java
> (revision 377365)
> +++ trunk/modules/luni/src/main/java/java/lang/StringBuffer.java (working
> copy)
> @@ -798,7 +798,10 @@
> * @see #length
> */
> public synchronized void setLength(int length) {
> - if (length > value.length)
> + if (length < 0) {
> + throw new IndexOutOfBoundsException("argument is
> negative");
> + }
> + if (length > value.length)
> Suggested junit test case:
> ------------------------ StringBufferTest.java
> -------------------------------------------------
> import junit.framework.*;
> public class StringBufferTest extends TestCase {
> public static void main(String[] args) {
> junit.textui.TestRunner.run(StringBuffer.class);
> }
> public void test_read () {
> StringBuffer buffer = new StringBuffer("abcde");
> try {
> buffer.setLength(-1);
> fail("IndexOutOfBoundsException must be thrown");
> } catch (IndexOutOfBoundsException e) {
> //expected
> }
> }
> }
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