Resolved: (XERCESJ-1217) Pattern matching failes with stack-overflow 2006-12-03 - By Michael Glavassevich (JIRA)
[ http://issues.apache.org/jira/browse/XERCESJ-1217?page=all ]
Michael Glavassevich resolved XERCESJ-1217.
-------------------------------------------
Resolution: Duplicate
Duplicate of XERCESJ-589. This is a well-known limitation which has been
reported several times before.
> Pattern matching failes with stack-overflow
> -------------------------------------------
>
> Key: XERCESJ-1217
> URL: http://issues.apache.org/jira/browse/XERCESJ-1217
> Project: Xerces2-J
> Issue Type: Bug
> Components: XML Schema datatypes
> Affects Versions: 2.9.0
> Environment: WinXP (but issue is platform agnostic)
> Reporter: Derek Denny-Brown
>
> The X3D schema includes the pattern "((\+|\-)?(0|[1-9][0-9]*)?( )?(,)?( )?)*"
to represent a list of optionally comma separated integers. it is not uncommon
for there to be long lists, even to thousands of entries. Xerces validation
fails with a stack-overflow at ~200 entries on my development machine, which is
~1% of the worst case value (derived from the W3C EXI test data). One such
example that is easy to find the the classic 'teapot' expressed in x3d (google:
teapot.x3d). The XSD for X3D can be found at http://www.web3d.org/x3d
/specifications/.
> The problem seems to stem from recursion in Op.CLOSURE and Op.UNION in org
.apache.xerces.impl.xpath.regex.RegularExpression.matchString(Context con, Op op
, int offset, int dx, int opts)
> This effectively blocks the ability to use Xerces2-J to validate real-world
X3D documents
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