9.1.6.0

jruby ../snippets/super6.rb 
ArgumentError: wrong number of arguments (1 for 3)
     foo at ../snippets/super6.rb:-1
     foo at ../snippets/super6.rb:11
  <main> at ../snippets/super6.rb:15
  
  
  IR:
  
  :Instructions
2016-11-28T10:25:30.604-06:00 [main] INFO BasicCompilerPassListener : Finished AddMissingInitsPass on scope in 0ms.
2016-11-28T10:25:30.604-06:00 [main] INFO IRScope : -:9 foo
  0	[DEAD]%self = recv_self()
  1	%v_0 = load_implicit_closure()
  2	%current_scope = copy(scope<0>)
  3	%current_module = copy(module<0>)
  4	check_arity(;req: 3, opt: 0, *r: false, kw: false)
  5	_(0:0) = recv_pre_reqd_arg(;i:0)
  6	line_num(;n: 10)
  7	%v_3 = instance_super(%current_module, _(0:0), %v_0 ;n:foo, t:SU, cl:true)
  8	return(%v_3)

mri 2.3.1

system ~/work/jruby master * 1086% mri23 ../snippets/super6.rb 
1
2
3

super.rb

class A
  def foo(a, b, c)
    p a, b, c
  end
end

class B < A
  def foo(_, _, _)
    super
  end
end

B.new.foo(1, 2, 3)

with_new_fix

system ~/work/jruby master * 1087% jruby ../snippets/super6.rb 
3
3
3

2016-11-28T10:27:26.182-06:00 [main] INFO BasicCompilerPassListener : 
Instructions[-#9#foo,IRMethod,LiveVariableAnalysis]:
BB [1:LBL_0:-1]
BB [2:LBL_1:-1]
	%v_0 = load_implicit_closure()
	%current_scope = copy(scope<0>)
	%current_module = copy(module<0>)
	check_arity(;req: 3, opt: 0, *r: false, kw: false)
	_(0:0) = recv_pre_reqd_arg(;i:0)
	_(0:0) = recv_pre_reqd_arg(;i:1)
	_(0:0) = recv_pre_reqd_arg(;i:2)
	line_num(;n: 10)
	%v_3 = instance_super(module<0>, _(0:0), _(0:0), _(0:0), %v_0 ;n:foo, t:SU, cl:true)
	return(%v_3)
BB [3:LBL_2:-1]