StackOverflowError by com.sun.xml.stream.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next

Operating System
----------------------
SPARC Solaris 10 (but reproduceible at any OS)
Due to bigger Solaris OS default of pagesize(1) of 8k, the issue is
faster reproduceible at sparc architecture.

StAX Version
----------------------
issue persist at any StAX (eg.lastest JDK6 or Glassfish or latest StAX 1.0.2 from dev.java.net)

Description
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Customer is running StAX at Application Server to read XML files.
Quite similar to CR#6440214 the StAX scanner produce a java.lang.StackOverflowError while
reading valid XML files, in case the text content of a XML element contains many lines like "< ... >".
As more new lines with "< ... >" will be added, as bigger java stack is consumed, caused by the StAX scanner.
However the given workaround from CR#6440214 to set "IS_COALESCING, Boolean.FALSE" do not work
in our test case. The seen error message is additional a bit different which is the reason for another bugreport.
Setting IS_COALESCING to FALSE cause only a very small effect to reduce the amound of
used stack size by just a few bytes.

Testcase attached
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- sample XML file which cause the issue
- the runnable testcase

Howto run the testcase
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- download and extract latest ant if you dont have ant installed
- Please unzip the test case and run on sparc to reproduce the error
$ ant -Dplatform.home=/your/path/to/jdk1.5.0_xx -Drun.jvmargs="-server" clean test

- Please run on sparc this command to prevent the error
$ ant -Dplatform.home=/your/path/to/jdk1.5.0_xx -Drun.jvmargs="-server -Xss800k" clean test

- To simulate the error with Solaris x86, use ppgsz(1)
call pagesize -a and pickup a valid pagesize bigger then 8k and call the ant command at x86 like this
$ ppgsz -o stack=2097152 ant -Dplatform.home=/opt/jdk1.5.0_22-32 -Drun.jvmargs="-server" clean test

Error Messages
-----------------------
java.lang.StackOverflowError
at com.sun.xml.stream.XMLEntityReaderImpl.scanName(XMLEntityReaderImpl.java:700)
at com.sun.xml.stream.XMLDocumentFragmentScannerImpl.scanEntityReference(XMLDocumentFragmentScannerImpl.java:1723)
at com.sun.xml.stream.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2936)
at com.sun.xml.stream.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2819)
at com.sun.xml.stream.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2962)
at com.sun.xml.stream.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2819)
at com.sun.xml.stream.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2962)
at com.sun.xml.stream.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2819)
at com.sun.xml.stream.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2962)
at com.sun.xml.stream.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2819)
at com.sun.xml.stream.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2962)
...
...