Andrew Leonard created XALANJ-2850:
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Summary: Concurrent XSLT transformation throws "Can not setRoot on
a non-iterated NodeSequence" RuntimeException
Key: XALANJ-2850
URL: https://issues.apache.org/jira/browse/XALANJ-2850
Project: XalanJ2
Issue Type: Bug
Security Level: No security risk; visible to anyone (Ordinary problems in
Xalan projects. Anybody can view the issue.)
Components: Xalan
Affects Versions: 2.7.2
Environment: Ubuntu armv7 host running with Temurin jdk8 aarch32 JVM.
Reporter: Andrew Leonard
{color:#800000}### Observed Failure{color}
{color:#000000}Consistent crash under multi-threaded XSLT transformation
(DaCapo {color}{color:#800000}`xalan`{color}{color:#000000} benchmark, 4
threads, Ubuntu 24.04/aarch32). The race is timing-sensitive and may be masked
on fewer-core hardware or on architectures where
{color}{color:#800000}`synchronized`{color}{color:#000000} barriers
accidentally serialise access.{color}
{color:#000000}```{color}
{color:#000000}Caused by: java.lang.RuntimeException: Programmer assertion is
incorrect! - Can not setRoot on a non-iterated NodeSequence!{color}
{color:#000000} at
org.apache.xpath.Expression.assertion(Expression.java:423){color}
{color:#000000} at
org.apache.xpath.axes.NodeSequence.setRoot(NodeSequence.java:275){color}
{color:#000000} at
org.apache.xpath.axes.LocPathIterator.asIterator(LocPathIterator.java:269){color}
{color:#000000} at
org.apache.xalan.templates.ElemApplyTemplates.transformSelectedNodes(ElemApplyTemplates.java:207){color}
{color:#000000} at
org.apache.xalan.templates.ElemApplyTemplates.execute(ElemApplyTemplates.java:178){color}
{color:#000000} at
org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2402){color}
{color:#000000} at
org.apache.xalan.transformer.TransformerImpl.applyTemplateToNode(TransformerImpl.java:2272){color}
{color:#000000} at
org.apache.xalan.transformer.TransformerImpl.transformNode(TransformerImpl.java:1358){color}
{color:#000000} at
org.apache.xalan.transformer.TransformerImpl.transform(TransformerImpl.java:711){color}
{color:#000000} at
org.apache.xalan.transformer.TransformerImpl.transform(TransformerImpl.java:1275){color}
{color:#000000} at
org.apache.xalan.transformer.TransformerImpl.transform(TransformerImpl.java:1253){color}
{color:#000000} at
org.dacapo.xalan.XSLTBench$XalanWorker.run(XSLTBench.java:157){color}
{color:#000000}```{color}
{color:#000000}This is from an Adoptium AQAvit testcase running Dacapo xalan
benchmark.{color}
{color:#000000}A test grinder job with full console is available here:
[https://ci.adoptium.net/job/Grinder/18088/console]{color}
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