Re: [rules-users] JITting error with 5.5.0.CR1

When I run this Groovy script using drools 5.5.0.CR1 with numAnimals = 8 and numLegs = 120, it works fine. If I set numAnimals = 17 and numLegs = 1020 then it fails with a JITting error. I saw a bunch of Jira issues related to JITting issues but no open ones seemed to match exactly. @GrabResolver('https://repository.jboss.org/nexus/content/groups/public-jboss/') @Grab('org.drools:knowledge-api:5.5.0.CR1') @Grab('org.drools:drools-compiler:5.5.0.CR1') @Grab('org.drools:drools-core:5.5.0.CR1') @Grab('com.sun.xml.bind:jaxb-xjc:2.2.5.jboss-1') @GrabExclude('com.github.relaxng:relaxngDatatype') @GrabResolver('http://repo2.maven.org/maven2/') @Grab('org.mvel#mvel2;2.1.2.Final') @Grab('org.slf4j#slf4j-simple;1.6.4') import groovy.transform.Immutable import static org.drools.KnowledgeBaseFactory.newKnowledgeBase import static org.drools.builder.KnowledgeBuilderFactory.newKnowledgeBuilder import static org.drools.builder.ResourceType.DRL import static org.drools.io.ResourceFactory.newReaderResource def numAnimals = 8 def numLegs = 120 def kbuilder = newKnowledgeBuilder() def drl = ''' dialect "mvel" rule "deduce animal counts" when $crane : Crane( ) $centipede : Centipede( ) $tortoise : Tortoise( quantity + $crane.quantity + $centipede.quantity == ''' + numAnimals + ''', quantity * numLegs + $crane.quantity * $crane.numLegs + $centipede.quantity * $centipede.numLegs == ''' + numLegs + ''' ) then System.out.println( "Cranes " + $crane.getQuantity() ) System.out.println( "Tortoises " + $tortoise.getQuantity() ) System.out.println( "Centipedes " + $centipede.getQuantity() ) end ''' kbuilder.add(newReaderResource(new StringReader(drl)), DRL) def kbase = newKnowledgeBase() kbase.addKnowledgePackages(kbuilder.knowledgePackages) def ksession = kbase.newStatefulKnowledgeSession() (numAnimals + 1).times { n -> if (numLegs.intdiv(Crane.numLegs) >= n) { ksession.insert(new Crane(n)) } if (numLegs.intdiv(Tortoise.numLegs) >= n) { ksession.insert(new Tortoise(n)) } if (numLegs.intdiv(Centipede.numLegs) >= n) { ksession.insert(new Centipede(n)) } } ksession.fireAllRules() ksession.dispose() @Immutable class Crane { static int numLegs = 2 int quantity } @Immutable class Tortoise { static int numLegs = 4 int quantity } @Immutable class Centipede { static int numLegs = 100 int quantity } Here is the error message: Exception in thread "Thread-1" java.lang.RuntimeException: Exception jitting: quantity + $crane.quantity + $centipede.quantity == 17 && quantity * numLegs + $crane.quantity * $crane.numLegs + $centipede.quantity * $centipede.numLegs == 1020 at org.drools.rule.constraint.MvelConstraint.executeJitting(MvelConstraint.java:275) at org.drools.rule.constraint.MvelConstraint.access$200(MvelConstraint.java:51) at org.drools.rule.constraint.MvelConstraint$ConditionJitter.run(MvelConstraint.java:250) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) at java.lang.Thread.run(Thread.java:722) Caused by: java.lang.RuntimeException: java.lang.RuntimeException: Error writing method evaluate at org.drools.rule.builder.dialect.asm.ClassGenerator.newInstance(ClassGenerator.java:200) at org.drools.rule.constraint.ASMConditionEvaluatorJitter.jitEvaluator(ASMConditionEvaluatorJitter.java:53) at org.drools.rule.constraint.MvelConstraint.executeJitting(MvelConstraint.java:273) ... 5 more Caused by: java.lang.RuntimeException: Error writing method evaluate at org.drools.rule.builder.dialect.asm.ClassGenerator$MethodDescr.write(ClassGenerator.java:881) at org.drools.rule.builder.dialect.asm.ClassGenerator.generateBytecode(ClassGenerator.java:128) at org.drools.rule.builder.dialect.asm.ClassGenerator.generateClass(ClassGenerator.java:144) at org.drools.rule.builder.dialect.asm.ClassGenerator.newInstance(ClassGenerator.java:198) ... 7 more Caused by: java.lang.ArrayIndexOutOfBoundsException: 0 at org.mvel2.asm.Frame.merge(Frame.java:1373) at org.mvel2.asm.Frame.merge(Frame.java:1329) at org.mvel2.asm.MethodWriter.visitMaxs(MethodWriter.java:1282) at org.drools.rule.builder.dialect.asm.ClassGenerator$MethodDescr.write(ClassGenerator.java:879) ... 10 more Is this a known issue? Thanks, Paul.