vm_args.c: search symbol proc in super classes

* vm_args.c (refine_sym_proc_call): traverse ancestors to search
  inherited methods for symbol proc.
  [ruby-dev:50741] [Bug #15489]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@66658 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 6 insertions, 0 deletions

diff --git a/test/ruby/test_symbol.rb b/test/ruby/test_symbol.rb
index 6438ec8771..13d7cc9d57 100644
--- a/test/ruby/test_symbol.rb
+++ b/test/ruby/test_symbol.rb
@@ -191,6 +191,12 @@ class TestSymbol < Test::Unit::TestCase
     assert_equal(:hogehoge, _test_to_proc_arg_with_refinements_call(&:hoge))
   end
 
+  def test_to_proc_arg_with_refinements_undefined
+    assert_raise(NoMethodError) do
+      _test_to_proc_arg_with_refinements_call(&:foo)
+    end
+  end
+
   private def return_from_proc
     Proc.new { return 1 }.tap(&:call)
   end