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

["Stefan Liebig (JIRA)" <ji...@apache.org>]

Closing an CBZip2OutputStream when no data has been written fails with an java.lang.ArithmeticException: / by zero
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                 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


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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