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From "Jon Freedman (JIRA)" <>
Subject [jira] [Commented] (BCEL-173) ClassParser fails to parse JDK classes in Java 8: ClassFormatException: Invalid byte tag in constant pool
Date Mon, 29 Sep 2014 22:19:34 GMT


Jon Freedman commented on BCEL-173:

I am out of the office on my honeymoon until Tuesday 30th September.  Any questions please
contact Chris Coleman or Zahir Bishnani in my absence.

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> ClassParser fails to parse JDK classes in Java 8: ClassFormatException: Invalid byte
tag in constant pool
> ---------------------------------------------------------------------------------------------------------
>                 Key: BCEL-173
>                 URL:
>             Project: Commons BCEL
>          Issue Type: Bug
>    Affects Versions: 5.0, 5.1, 5.2
>            Reporter: David Carr
>             Fix For: 6.0
>         Attachments: bcel-bug.tgz
> See attached sample project that reproduces the failure.  On Java 7, it prints info about
the ConcurrentMap class.  On Java 8, it encounters the following exception:
> {code}
> Exception in thread "main" org.apache.bcel.classfile.ClassFormatException: Invalid byte
tag in constant pool: 18
> 	at org.apache.bcel.classfile.Constant.readConstant(
> 	at org.apache.bcel.classfile.ConstantPool.<init>(
> 	at org.apache.bcel.classfile.ClassParser.readConstantPool(
> 	at org.apache.bcel.classfile.ClassParser.parse(
> 	at TestMain.main(
> {code}
> To use the sample project, extract it and then run "./gradlew clean run".

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