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https://issues.apache.org/jira/browse/DIRMINA-664?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Emmanuel Lecharny resolved DIRMINA-664.
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       Resolution: Fixed
    Fix Version/s: 2.0.0-RC1

Fixed in http://svn.apache.org/viewvc?rev=748525&view=rev

> EMPTY_* IoBuffer constants can be made mutable and cause data errors
> --------------------------------------------------------------------
>
>                 Key: DIRMINA-664
>                 URL: https://issues.apache.org/jira/browse/DIRMINA-664
>             Project: MINA
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 2.0.0-M4
>         Environment: All?
>            Reporter: David Rosenstrauch
>            Assignee: Emmanuel Lecharny
>            Priority: Minor
>             Fix For: 2.0.0-RC1
>
>
> The EMPTY_* constants in the IoBuffer class can be made mutable (by using the 
> setAutoExpand(true) method call) which can result in those constant buffers 
> no longer being empty.  This can obviously cause a multitude of data errors.
> See this JUnit test case for an example:
> import junit.framework.TestCase;
> import org.apache.mina.core.buffer.IoBuffer;
> public class TestIoBuffer extends TestCase {
>       public void testIoBufferAllocate() {
>               IoBuffer buf = IoBuffer.allocate(0).setAutoExpand(true);
>               buf.putInt(1234);
>               buf.flip();
>               buf = IoBuffer.allocate(0);
>               assertEquals(0, buf.remaining());
>       }
>       public void testEmptyIoBuffer() {
>               IoBuffer buf = IoBuffer.EMPTY_BUFFER.setAutoExpand(true);
>               buf.putInt(1234);
>               buf.flip();
>               buf = IoBuffer.EMPTY_BUFFER;
>               assertEquals(0, buf.remaining());
>       }
> }

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