execution fails with IncompatibleClassChangeError

[Maurizio Cimadamore]

On 18/12/12 15:51, Brian Goetz wrote:
> Yes, this is a known bug with constructor refs to private nested
> classes.  We are currently trying to figure out whether the solution
> needs to come from the compiler or the VM.  (In the meantime, you can
> make the Bar constructor but not class public, which should get you past
> your current problem without opening additional security holes.)
I think that, since this is a bug, there's no rush to get a fix in while 
we are figuring out what's the better way to fix it. If the outcome of 
the discussion is that we'll have to change the compiler, we'll do that 
when the time comes. It doesn't seem a super common issue anyway.

Maurizio
>
> On 12/18/2012 6:38 AM, Anna Kozlova wrote:
>> Hello,
>>
>>
>>
>> Running the following class
>>
>> {code}
>>
>> public class FooBar {
>>
>>       private static final class Bar {
>>
>>           private Bar() {
>>
>>           }
>>
>>       }
>>
>>
>>
>>       private interface I {
>>
>>           Bar create();
>>
>>       }
>>
>>
>>
>>       static void foo(I intf) {}
>>
>>
>>
>>       public static void main(String[] args) throws Exception {
>>
>>           foo(Bar::new);
>>
>>       }
>>
>> }
>>
>> {code}
>>
>>
>>
>> fails with
>>
>> Exception in thread "main" java.lang.IncompatibleClassChangeError
>>
>>                   at
>> java.lang.invoke.MethodHandleNatives.linkMethodHandleConstant(MethodHandleNa
>> tives.java:383)
>>
>>                   at p.FooBar.main(FooBar.java:18)
>>
>>                   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native
>> Method)
>>
>>                   at
>> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57
>> )
>>
>>                   at
>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl
>> .java:43)
>>
>>                   at java.lang.reflect.Method.invoke(Method.java:474)
>>
>>                   at
>> com.intellij.rt.execution.application.AppMain.main(AppMain.java:120)
>>
>> Caused by: java.lang.IllegalAccessException: member is private:
>> p.FooBar$Bar.<init>()void/invokeSpecial, from p.FooBar
>>
>>                   at
>> java.lang.invoke.MemberName.makeAccessException(MemberName.java:732)
>>
>>                   at
>> java.lang.invoke.MethodHandles$Lookup.checkAccess(MethodHandles.java:1135)
>>
>>                   at
>> java.lang.invoke.MethodHandles$Lookup.getDirectConstructor(MethodHandles.jav
>> a:1243)
>>
>>                   at
>> java.lang.invoke.MethodHandles$Lookup.linkMethodHandleConstant(MethodHandles
>> .java:1270)
>>
>>                   at
>> java.lang.invoke.MethodHandleNatives.linkMethodHandleConstant(MethodHandleNa
>> tives.java:381)
>>
>>                   ... 6 more
>>
>>
>>
>> If I convert method reference to lambda expression or anonymous class
>> everything works correctly.  Checked with b68.
>>
>>
>>
>> Thank you
>> Anna
>>
>>
>>
>>