[jboss-jira] [JBoss JIRA] (JASSIST-171) Calling SignatureAttribute$MethodSignature.toString results in RuntimeException: bad descriptor

Calling SignatureAttribute$MethodSignature.toString results in RuntimeException: bad descriptor ----------------------------------------------------------------------------------------------- Key: JASSIST-171 URL: https://issues.jboss.org/browse/JASSIST-171 Project: Javassist Issue Type: Bug Affects Versions: 3.16.1-GA Reporter: ami tabak Assignee: Shigeru Chiba Fix For: 3.17.0-GA Attachments: javassistBugSample.zip, root-cause.jpg When attempting to instrument "org.apache.hadoop.examples.WordCount$TokenizerMapper" Am getting the following error: Exception in thread "main" java.lang.RuntimeException: bad descriptor: o at javassist.bytecode.Descriptor.toClassName(Descriptor.java:105) at javassist.bytecode.SignatureAttribute$BaseType.toString(SignatureAttribute.java:450) at java.lang.String.valueOf(Unknown Source) at java.lang.StringBuffer.append(Unknown Source) at javassist.bytecode.SignatureAttribute$Type.toString(SignatureAttribute.java:419) at javassist.bytecode.SignatureAttribute$MethodSignature.toString(SignatureAttribute.java:275) at java.lang.String.valueOf(Unknown Source) at java.lang.StringBuilder.append(Unknown Source) at com.optier.bug.report.Test.main(Test.java:50)