Issue 74:ICE with macros within a class def

[consiliens]

"
Reported by rogerpack2005, Jun 1, 2011

$ cat yo_mir 

class A
  macro def foo? 
    quote { isFoo } 
  end 
  def foo?
    true
  end
end
A.new.foo?

$ mirah yo_mir 
yo_mir:6: undefined method `unreachable?' for #<Mirah::AST::InlineCode:0x498b5a73>
  def foo?
^^^^^^^^^^^
    true
^^^^^^^^^
  end
^^^^^
Mirah::InternalCompilerError: undefined method `unreachable?' for #<Mirah::AST::InlineCode:0x498b5a73>
            infer at /Users/rogerdpack/.rvm/gems/jruby-1.6.0/gems/mirah-0.0.7-java/lib/mirah/typer.rb:300
...

"

http://code.google.com/p/mirah/issues/detail?id=74

[baroquebobcat]

Maybe it should say something like 'a method or macro with that name/signature is already defined'.

We probably also want to catch the same issue, but different error on duplicate method signatures

class A
  def foo? 
    false 
  end 
  def foo?
    true
  end
end