[jboss-jira] [JBoss JIRA] Created: (JASSIST-83) NullPointerException in Handler#getType
NullPointerException in Handler#getType
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Key: JASSIST-83
URL: https://jira.jboss.org/jira/browse/JASSIST-83
Project: Javassist
Issue Type: Bug
Environment: JA version 3.4, Windows Vista and JDK 1.6.0_10
Reporter: Hans-Joerg Adel
Assignee: Shigeru Chiba
Priority: Optional
Hi!
When I use ExprEditor#edit(Handler) to access a try-statement without a catch-clause I get
a NullPointerException.
To reproduce the bug, please use this source
/*--- (C) 1999-2008 Techniker Krankenkasse ---*/
package samplepackage;
import javassist.CannotCompileException;
import javassist.ClassPool;
import javassist.CtClass;
import javassist.NotFoundException;
import javassist.expr.ExprEditor;
import javassist.expr.Handler;
public class Sample {
public static void main(String[] args) throws NotFoundException, CannotCompileException
{
ClassPool classPool = ClassPool.getDefault();
CtClass ctClass = classPool.get("samplepackage.SampleClass");
ctClass.instrument(new MyExprEditor());
}
static class MyExprEditor extends ExprEditor {
@Override
public void edit(Handler h) throws CannotCompileException {
try {
h.getType();
} catch (NotFoundException e) {
}
}
}
}
Stacktrace:
Exception in thread "main" java.lang.NullPointerException
at javassist.bytecode.Descriptor.toCtClass(Descriptor.java:517)
at javassist.bytecode.Descriptor.toCtClass(Descriptor.java:499)
at javassist.expr.Handler.getType(Handler.java:76)
at samplepackage.Sample$MyExprEditor.edit(Sample.java:25)
at javassist.expr.ExprEditor.doit(ExprEditor.java:97)
at javassist.CtClassType.instrument(CtClassType.java:1224)
at samplepackage.Sample.main(Sample.java:17)
I would expect that h.getType() returns null.
I am using JA version 3.4, Windows Vista and JDK 1.6.0_10.
Cheers
Ruwen
iA Hans-Joerg Adel
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