fails to identify empty exception decl

public class test
{
/**
* demonstrate bug in texidoclet for
* empty exception declaration
* @exception
*/
public void demo() {
}
}

Here is the command line and error message:

jerry> CLASSPATH="./source/TexiDoclet.jar" javadoc
-docletpath TexiDocl
et.jar -doclet gnu.texidoclet.Driver test.java
Loading source file test.java...
Constructing Javadoc information...
Generating .texid files
TexiDoclet creates texinfo source...
working on package:
working on package class:test
javadoc: warning - demo: @exception tag has no
arguments.
javadoc: In doclet class gnu.texidoclet.Driver, method
start has thrown an exception
java.lang.reflect.InvocationTargetException
java.lang.StringIndexOutOfBoundsException: String index
out of range: 0
at java.lang.String.charAt(String.java(Compiled
Code))
at
gnu.texidoclet.Toolkit.isQualifiedClassName(Toolkit.java:380)
at
gnu.texidoclet.Toolkit.throwsTagToNodeName(Toolkit.java:398)
at
gnu.texidoclet.ExecutableNode.<init>(ExecutableNode.java:146)
at
gnu.texidoclet.ExecutableNode.<init>(ExecutableNode.java:70)
at
gnu.texidoclet.ClassNode.<init>(ClassNode.java:217)
at
gnu.texidoclet.PackageNode.<init>(PackageNode.java:73)
at
gnu.texidoclet.TexiDoclet.start(TexiDoclet.java:119)
at gnu.texidoclet.Driver.start(Driver.java:50)
at java.lang.reflect.Method.invoke(Native
Method)
at
com.sun.tools.javadoc.DocletInvoker.invoke(DocletInvoker.java:197)
at
com.sun.tools.javadoc.DocletInvoker.start(DocletInvoker.java:99)
at
com.sun.tools.javadoc.Main.main(Main.java:237)
1 error
1 warning