Indy crash

[Charles Oliver Nutter]

On Wed, Jun 15, 2011 at 10:32 AM, Tom Rodriguez
<tom.rodriguez at oracle.com> wrote:
> I get the following message when I try to run it:
>
> InvokeDynamicSupport.java:468:in `invocationFallback': java.lang.invoke.WrongMethodTypeException: (Lorg/jruby/runtime/ThreadContext;Lorg/jruby/runtime/builtin/IRubyObject;Lorg/jruby/runtime/builtin/IRubyObject;Ljava/lang/String;Lorg/jruby/runtime/builtin/IRubyObject;)Lorg/jruby/runtime/builtin/IRubyObject; cannot be called with a different arity as ([Ljava/lang/Object;)Ljava/lang/Object;

This happens when InvokeDynamicSupport is not build with Java 7. That
sometimes happens to me because I use Java 6 frequently, and I haven't
figured out a clean way to have a single build that supports both Java
6 and Java 7.

It's due to the compiler not handling the signature-polymorphic
MethodHandle.invokeExact calls.

> I also get messages like this:
>
> Message: <"target and fallback types must match: (ThreadContext,IRubyObject,IRubyObject,String,IRubyObject)IRubyObject != (ThreadContext,IRubyObject,I
> RubyObject,String)IRubyObject">
>
> when running many of the tests.  My jruby is a fresh clone of git://jruby.org/jruby.git.

Toss me a couple of the tests that fail. I have not attempted to run
the full test suite lately because a native library we need in some
tests does not load on a non-universal OpenJDK build on OS X.

- Charlie