Inconsistent null check between JITed and non-JITed "contains"/"memberOf" condition ----------------------------------------------------------------------------------- Key: DROOLS-3794 URL: https://issues.jboss.org/browse/DROOLS-3794 Project: Drools Issue Type: Bug Affects Versions: 7.19.0.Final Reporter: Max Zerzouri Assignee: Mario Fusco Priority: Major Attachments: DroolsTest.java, drl.drl A condition such as {{list contains item}} or {{item memberOf list}} seems to correspond to {{EvaluatorHelper.contains(list, item)}}, but when this has been compiled through {{ASMConditionEvaluatorJitter}}, the condition includes the additional constraint, {{item != null}}. This differs to the non-JITed condition, which does not require {{item}} to be non-null. Attached an example {{.drl}} file as an example case, and a simple runner. Running {{java DroolsTest 14}} triggers the issue for me (resulting in an infinite loop in this case), but since the recompilation is asynchronous, it might require a larger number. Decompiled {{ConditionalEvaluator}} for the test case below: {code:java} import droolstest.Bar; import droolstest.Foo; import java.util.List; import org.drools.core.common.InternalFactHandle; import org.drools.core.common.InternalWorkingMemory; import org.drools.core.rule.Declaration; import org.drools.core.rule.constraint.ConditionEvaluator; import org.drools.core.rule.constraint.EvaluatorHelper; import org.drools.core.spi.Tuple; public class ConditionEvaluator4471f59df9b54235ba1be708b5c480da implements ConditionEvaluator { private static final String EXPRESSION = "!( foo.barNames contains name )"; private final Declaration[] declarations; public boolean evaluate(InternalFactHandle internalFactHandle, InternalWorkingMemory internalWorkingMemory, Tuple tuple) { Tuple tuple2 = tuple; Foo foo = (Foo)this.declarations[0].getValue(internalWorkingMemory, tuple2.getFactHandle().getObject()); List list = foo.getBarNames(); String string = ((Bar)internalFactHandle.getObject()).getName(); return !(list == null ? false : (string == null ? false : EvaluatorHelper.contains((Object)list, (Object)string))); } public ConditionEvaluator4471f59df9b54235ba1be708b5c480da(Declaration[] arrdeclaration) { this.declarations = arrdeclaration; } } {code}