DRL compiler throws NPE if you import a class from default package ------------------------------------------------------------------ Key: DROOLS-920 URL: https://issues.jboss.org/browse/DROOLS-920 Project: Drools Issue Type: Bug Reporter: David Weir Assignee: Mario Fusco Attachments: DroolsLoopingTest.java, MyMessage.java I am working on a looping problem and built the attached test case. It gives me this error when I run it: Running DroolsLoopingTest Creating new session SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder". SLF4J: Defaulting to no-operation (NOP) logger implementation SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details. Exception in thread "main" java.lang.NullPointerException at org.drools.compiler.builder.impl.ClassHierarchyManager.inheritFields(ClassHierarchyManager.java:164) at org.drools.compiler.builder.impl.TypeDeclarationBuilder.createBean(TypeDeclarationBuilder.java:214) at org.drools.compiler.builder.impl.TypeDeclarationBuilder.processTypeDeclarations(TypeDeclarationBuilder.java:128) at org.drools.compiler.builder.impl.CompositeKnowledgeBuilderImpl.buildTypeDeclarations(CompositeKnowledgeBuilderImpl.java:274) at org.drools.compiler.builder.impl.CompositeKnowledgeBuilderImpl.buildPackages(CompositeKnowledgeBuilderImpl.java:116) at org.drools.compiler.builder.impl.CompositeKnowledgeBuilderImpl.build(CompositeKnowledgeBuilderImpl.java:104) at org.drools.compiler.kie.builder.impl.AbstractKieModule.buildKnowledgePackages(AbstractKieModule.java:238) at org.drools.compiler.kie.builder.impl.AbstractKieProject.verify(AbstractKieProject.java:64) at org.drools.compiler.kie.builder.impl.KieBuilderImpl.buildKieProject(KieBuilderImpl.java:225) at org.drools.compiler.kie.builder.impl.KieBuilderImpl.buildAll(KieBuilderImpl.java:196) at DroolsLoopingTest.createInMemoryKieSystem(DroolsLoopingTest.java:146) at DroolsLoopingTest.runTest(DroolsLoopingTest.java:106) at DroolsLoopingTest.main(DroolsLoopingTest.java:40)