Exception on field interceptor when field name is prefixed b

[plouf]

I tried to search for the issue, also googlized it, but without any success.

In JBoss AOP 1.3 standalone :

Compile the "field-execution" example in the jboss 1.3 directory. It runs smoothly. Now rename field "var2" to "_var2" and run it again. I get

Exception in thread "main" java.lang.IllegalArgumentException
 at sun.reflect.UnsafeStaticIntegerFieldAccessorImpl.set(Unknown Source)
 at java.lang.reflect.Field.set(Unknown Source)
 at org.jboss.aop.joinpoint.FieldWriteInvocation.invokeNext(FieldWriteInvocation.java:60)
 at trace.TraceInterceptor.invoke(TraceInterceptor.java:173)
...

Problem occurs on Windows XP:
java version "1.5.0_04"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_04-b05)
Java HotSpot(TM) Client VM (build 1.5.0_04-b05, mixed mode, sharing)

Any idea of what am I doing wrong?
Thanks for your time

[plouf]

Subjet got truncated, it is supposed to end with "by underscore".