[jboss-jira] [JBoss JIRA] (JASSIST-176) I get a NPE in TypeData

[Shigeru Chiba (JIRA)]

    [ https://issues.jboss.org/browse/JASSIST-176?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12729035#comment-12729035 ] 

Shigeru Chiba commented on JASSIST-176:
---------------------------------------

John, can you run your program with javassist.jar attached above.  It will throw a NullPointerException but it will give us more detailed information of the bug.  The exception will show us two class names.  Can you post these two names and their super classes?  Are they interface names?

Thanks!
                
> I get a NPE in TypeData
> -----------------------
>
>                 Key: JASSIST-176
>                 URL: https://issues.jboss.org/browse/JASSIST-176
>             Project: Javassist
>          Issue Type: Bug
>    Affects Versions: 3.17.0-GA
>         Environment: Java 7 
>            Reporter: John Bainbridge
>            Assignee: Shigeru Chiba
>         Attachments: javassist.jar
>
>
> This kills my JVM.     I'm looking at trying to make simple test case.  It appears to be releated to JASSIST-175
> caused by: java.lang.NullPointerException
> 	at javassist.bytecode.stackmap.TypeData.commonSuperClassEx(TypeData.java:400)
> 	at javassist.bytecode.stackmap.TypeData$TypeVar.fixTypes2(TypeData.java:342)
> 	at javassist.bytecode.stackmap.TypeData$TypeVar.fixTypes(TypeData.java:325)
> 	at javassist.bytecode.stackmap.TypeData$TypeVar.dfs(TypeData.java:270)
> 	at javassist.bytecode.stackmap.MapMaker.fixTypes(MapMaker.java:301)
> 	at javassist.bytecode.stackmap.MapMaker.make(MapMaker.java:151)
> 	at javassist.bytecode.stackmap.MapMaker.make(MapMaker.java:100)
> 	at javassist.bytecode.MethodInfo.rebuildStackMap(MethodInfo.java:423)
> 	at javassist.bytecode.MethodInfo.rebuildStackMapIf6(MethodInfo.java:405)
> 	at javassist.expr.ExprEditor.doit(ExprEditor.java:113)
> 	at javassist.CtClassType.instrument(CtClassType.java:1398)
> 	at org.powermock.core.transformers.impl.MainMockTransformer.transform(MainMockTransformer.java:75)
> 	at org.powermock.core.classloader.MockClassLoader.loadMockClass(MockClassLoader.java:203)
> 	... 27 more

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