[jira] Updated: (SANDBOX-195) Closing an CBZip2OutputStream when no data has been written fails with an java.lang.ArithmeticException: / by zero

["Christian Grobmeier (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SANDBOX-195?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Christian Grobmeier updated SANDBOX-195:
----------------------------------------

    Attachment: patch-update-bzip2.txt

The Ant implementation has been fixed for a while. The attached patch updates the bzip2 implementation to the current impl which is beeing used from Ant.

> Closing an CBZip2OutputStream when no data has been written fails with an java.lang.ArithmeticException: / by zero
> ------------------------------------------------------------------------------------------------------------------
>
>                 Key: SANDBOX-195
>                 URL: https://issues.apache.org/jira/browse/SANDBOX-195
>             Project: Commons Sandbox
>          Issue Type: Bug
>          Components: Compress
>            Reporter: Stefan Liebig
>            Priority: Critical
>         Attachments: patch-update-bzip2.txt
>
>
> The following test case reproduces the error:
> public class CBZip2OutputStreamTest extends TestCase {
> 	/**
> 	 * @throws IOException
> 	 */
> 	public void testEmtpyOutput() throws IOException {
> 		CBZip2OutputStream outputStream = new CBZip2OutputStream( new ByteArrayOutputStream() );
> 		outputStream.close();
> 	}
> }
> fails with:
> java.lang.ArithmeticException: / by zero
> 	at org.apache.tools.bzip2.CBZip2OutputStream.mainSort(CBZip2OutputStream.java:1174)
> 	at org.apache.tools.bzip2.CBZip2OutputStream.doReversibleTransformation(CBZip2OutputStream.java:1386)
> 	at org.apache.tools.bzip2.CBZip2OutputStream.endBlock(CBZip2OutputStream.java:476)
> 	at org.apache.tools.bzip2.CBZip2OutputStream.close(CBZip2OutputStream.java:427)
> 	at CBZip2OutputStreamTest.testEmtpyOutput(CBZip2OutputStreamTest.java:23)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> 	at java.lang.reflect.Method.invoke(Method.java:585)
> 	at junit.framework.TestCase.runTest(TestCase.java:154)
> 	at junit.framework.TestCase.runBare(TestCase.java:127)
> 	at junit.framework.TestResult$1.protect(TestResult.java:106)
> 	at junit.framework.TestResult.runProtected(TestResult.java:124)
> 	at junit.framework.TestResult.run(TestResult.java:109)
> 	at junit.framework.TestCase.run(TestCase.java:118)
> 	at junit.framework.TestSuite.runTest(TestSuite.java:208)
> 	at junit.framework.TestSuite.run(TestSuite.java:203)
> 	at org.eclipse.jdt.internal.junit.runner.junit3.JUnit3TestReference.run(JUnit3TestReference.java:128)
> 	at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
> 	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:460)
> 	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673)
> 	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386)
> 	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)

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