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Date: Wed, 23 Dec 2009 20:57:00 -0000
Message-ID: <aaec99390912231257n6309980ei152b60bbe9ed8f5f@mail.gmail.com>
Subject: Re: problem with class accessiblity check in invoke (natMethod.cc)
From: Erik Groeneveld <erik@cq2.nl>
To: Andrew Haley <aph@redhat.com>
Cc: java <java@gcc.gnu.org>
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>> =C2=A0 =C2=A0 java::util::ArrayList* l =3D new java::util::ArrayList();
>> =C2=A0 =C2=A0 java::util::Iterator* i =3D l->iterator();
>> =C2=A0 =C2=A0 i =3D l->iterator();
>> =C2=A0 =C2=A0 i->hasNext();
>
> Right, because CNI is bypassing the controls.

Ok. CNI behaves just as both OpenJDK and GCJ do on corresponding Java code:

   ArrayList l =3D new ArrayList();
   Iterator i =3D l.iterator();
   i.hasNext();

And your example indeed raises IllegalAccessException in both OpenJDK and G=
CJ:

> import java.lang.reflect.*;
> import java.util.*;
>
> public class Problem
> {
> =C2=A0public static void main(String[] args)
> =C2=A0 =C2=A0throws Throwable
> =C2=A0{
> =C2=A0 =C2=A0ArrayList l =3D new ArrayList();
> =C2=A0 =C2=A0Iterator i =3D l.iterator();
> =C2=A0 =C2=A0Method m =3D (i.getClass().getDeclaredMethod
> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0("hasNext", null));
> =C2=A0 =C2=A0m.invoke(i, null);
> =C2=A0}
> }

I am convinced but still unsure how to deal with it. I don't see a way
to translate the direct Java call into the corresponding reflection
part.  I think I settle for the setAccessible() option.

Best regards
Erik