exception when generate log file on dacapo-23

[zplink42]

I want to generate log files using tamiflex on dacapo-23.
I using the first version of dacapo-23: dacapo-23.8-chopin RC1 RELEASE NOTES 2023-07
poa version: [poa-2.0.3.jar]
but I meet exception when generate files on bm such as biojava, fop, zxing....
when I execute: java -jar dacapo-23.8-chopin-RC1.jar biojava, it works successful;

when I execute: java -javaagent:poa-2.0.3.jar -jar dacapo-23.8-chopin-RC1.jar biojava, the exception is:
Exception in thread "Thread-0" java.lang.IllegalStateException: ClassReader.accept() should be called with EXPAND_FRAMES flag at org.objectweb.asm.commons.LocalVariablesSorter.visitFrame(Unknown Source) at org.objectweb.asm.commons.RemappingMethodAdapter.visitFrame(Unknown Source) at org.objectweb.asm.MethodAdapter.visitFrame(Unknown Source) at org.objectweb.asm.ClassReader.accept(Unknown Source) at org.objectweb.asm.ClassReader.accept(Unknown Source) at de.bodden.tamiflex.normalizer.Hasher.generateHashNumber(Hasher.java:99) at de.bodden.tamiflex.playout.ClassDumper.writeClassesToDisk(ClassDumper.java:84) at de.bodden.tamiflex.playout.Agent$1.run(Agent.java:123)

Do you know why it happens?

[ericbodden]

Hi @zplink42. To me it looks like the call to ClassReader.accept(..) in line 99 of Hasher.java might be missing a certain flag, EXPAND_FRAMES:
https://asm.ow2.io/javadoc/org/objectweb/asm/ClassReader.html

I am just wondering why this has never shown before. Maybe it has to do with the Java version of the classes that this Dacapo instance was built with.

Would you maybe be able to patch Hasher.java accordingly and try this out? If this works then I would be happy to accept a pull request with the fix.

[zplink42]

@ericbodden Thanks for your apply. Your suggestion will be one of my next research directions. And I would like to submit PR if I solve this problem.