[ https://issues.jboss.org/browse/JASSIST-245?page=com.atlassian.jira.plugi... ] David Carr updated JASSIST-245: ------------------------------- Steps to Reproduce: To reproduce, put the javassist JAR and DescribingHandlers.java (https://gist.github.com/davidmc24/17e120b67ce35831a07a) in a directory and run the following command: {code}javac -Werror -Xlint:classfile -classpath javassist-3.19.0-GA.jar DescribingHandlers.java{code} You should get something like the following output: {code} javassist-3.19.0-GA.jar(javassist/ClassPool.class): warning: [classfile] MethodParameters attribute introduced in version 52.0 class files is ignored in version 50.0 class files javassist-3.19.0-GA.jar(javassist/CtBehavior.class): warning: [classfile] MethodParameters attribute introduced in version 52.0 class files is ignored in version 50.0 class files javassist-3.19.0-GA.jar(javassist/CtClass.class): warning: [classfile] MethodParameters attribute introduced in version 52.0 class files is ignored in version 50.0 class files javassist-3.19.0-GA.jar(javassist/NotFoundException.class): warning: [classfile] MethodParameters attribute introduced in version 52.0 class files is ignored in version 50.0 class files javassist-3.19.0-GA.jar(javassist/bytecode/ClassFile.class): warning: [classfile] MethodParameters attribute introduced in version 52.0 class files is ignored in version 50.0 class files error: warnings found and -Werror specified javassist-3.19.0-GA.jar(javassist/CtMember.class): warning: [classfile] MethodParameters attribute introduced in version 52.0 class files is ignored in version 50.0 class files javassist-3.19.0-GA.jar(javassist/bytecode/MethodInfo.class): warning: [classfile] MethodParameters attribute introduced in version 52.0 class files is ignored in version 50.0 class files 1 error 7 warnings {code} was: To reproduce, put the javassist JAR the attached DescribingHandlers.java file in a directory and run the following command: {code}javac -Werror -Xlint:classfile -classpath javassist-3.19.0-GA.jar DescribingHandlers.java{code} You should get something like the following output: {code} javassist-3.19.0-GA.jar(javassist/ClassPool.class): warning: [classfile] MethodParameters attribute introduced in version 52.0 class files is ignored in version 50.0 class files javassist-3.19.0-GA.jar(javassist/CtBehavior.class): warning: [classfile] MethodParameters attribute introduced in version 52.0 class files is ignored in version 50.0 class files javassist-3.19.0-GA.jar(javassist/CtClass.class): warning: [classfile] MethodParameters attribute introduced in version 52.0 class files is ignored in version 50.0 class files javassist-3.19.0-GA.jar(javassist/NotFoundException.class): warning: [classfile] MethodParameters attribute introduced in version 52.0 class files is ignored in version 50.0 class files javassist-3.19.0-GA.jar(javassist/bytecode/ClassFile.class): warning: [classfile] MethodParameters attribute introduced in version 52.0 class files is ignored in version 50.0 class files error: warnings found and -Werror specified javassist-3.19.0-GA.jar(javassist/CtMember.class): warning: [classfile] MethodParameters attribute introduced in version 52.0 class files is ignored in version 50.0 class files javassist-3.19.0-GA.jar(javassist/bytecode/MethodInfo.class): warning: [classfile] MethodParameters attribute introduced in version 52.0 class files is ignored in version 50.0 class files 1 error 7 warnings {code} -- This message was sent by Atlassian JIRA (v6.3.11#6341)