"JVMVRFY012 stack shape inconsistent" when loading jBPM JPA-Class in IBM JDK ---------------------------------------------------------------------------- Key: JASSIST-229 URL: https://issues.jboss.org/browse/JASSIST-229 Project: Javassist Issue Type: Bug Security Level: Public(Everyone can see) Affects Versions: 3.18.2-GA Environment: WebSphere [IBMJAVA7 7.0.6.1 cf021412.02]Platform 8.5.5.2 [ND 8.5.5.2 cf021414.01] Host Operating System is Windows Server 2008 R2, version 6.1 Java version = 1.7.0, Java Compiler = j9jit26, Java VM name = IBM J9 VM Reporter: Johannes Rost Assignee: Shigeru Chiba Attachments: complete_stacktrace.txt We are running in an "JVMVRFY012 stack shape inconsistent" with message "HHH000142: Javassist Enhancement failed: org.drools.persistence.info.WorkItemInfo" which is caused by "java.lang.VerifyError" with message "JVMVRFY012 stack shape inconsistent; class=org/drools/persistence/info/WorkItemInfo_$$_jvst3b5_2, method=_d0clone()Ljava/lang/Object;, pc=15". I will add a complete stacktrace to this issue We are only using jBPM core features anf the error occurs for all jBPM JPA classes loaded: * class=org/jbpm/persistence/correlation/CorrelationPropertyInfo_$$_jvst59a_0, method=_d0clone()Ljava/lang/Object;, pc=15 * class=org/jbpm/persistence/processinstance/ProcessInstanceInfo_$$_jvst59a_1, method=_d0clearProcessInstance()V, pc=19 * class=org/drools/persistence/info/WorkItemInfo_$$_jvst59a_2, method=_d0clone()Ljava/lang/Object;, pc=15 * class=org/drools/persistence/info/SessionInfo_$$_jvst59a_3, method=_d0clone()Ljava/lang/Object;, pc=15 * class=org/jbpm/persistence/correlation/CorrelationKeyInfo_$$_jvst59a_4, method=_d0addProperty(Lorg/jbpm/persistence/correlation/CorrelationPropertyInfo;)V, pc=15 We are using jBPM 6.0.1, Hibernate 4.3.6 and Javassist 3.18.2-GA (same for 3.18.1-GA). The application is deployed to WebSphere 8.5.5.2 running on Windows and using an IBM 64bit JDK version 1.7.0