instrumentation fails when building stackmap for local var of array type : bad array type for AALOAD: null ---------------------------------------------------------------------------------------------------------- Key: JASSIST-152 URL: https://issues.jboss.org/browse/JASSIST-152 Project: Javassist Issue Type: Bug Affects Versions: 3.15.0-GA Environment: Any Reporter: Yanic Inghelbrecht Assignee: Shigeru Chiba Fix For: 3.16.0-GA Attachments: demonstration.zip When trying to instrument the attached org.hibernate.cfg.AbstractPropertyHolder (copied from the hibernate 4.0.1 final distribution), instrumentation fails with the following exception : java.lang.RuntimeException: fatal error: at javassist.bytecode.stackmap.TypeData$TypeName.getTypeData(TypeData.java:177) at javassist.bytecode.stackmap.MapMaker.fillStackMap(MapMaker.java:410) at javassist.bytecode.stackmap.MapMaker.toStackMapBody(MapMaker.java:393) at javassist.bytecode.stackmap.MapMaker.toStackMap(MapMaker.java:323) at javassist.bytecode.stackmap.MapMaker.make(MapMaker.java:98) at javassist.bytecode.MethodInfo.rebuildStackMap(MethodInfo.java:417) at javassist.bytecode.MethodInfo.rebuildStackMapIf6(MethodInfo.java:399) at javassist.expr.ExprEditor.doit(ExprEditor.java:113) at javassist.CtBehavior.instrument(CtBehavior.java:672) at test_abstractpropertyholder.SimpleTranslator.modify(SimpleTranslator.java:25) at test_abstractpropertyholder.SimpleTranslator.onLoad(SimpleTranslator.java:19) at test_abstractpropertyholder.JavassistInstrumenter.getInstrumentedClass(JavassistInstrumenter.java:21) at test_abstractpropertyholder.Main.main(Main.java:32)transforming org.hibernate.cfg.AbstractPropertyHolder Caused by: javassist.bytecode.BadBytecode: bad array type for AALOAD: null at javassist.bytecode.stackmap.TypeData$ArrayElement.getName(TypeData.java:422) at javassist.bytecode.stackmap.TypeData$TypeName.getExpected(TypeData.java:292) at javassist.bytecode.stackmap.TypeData$TypeName.getTypeData(TypeData.java:175) ... 12 more