* proc.c (mnew): fix for instance method of Module, BasicObject

  and subclass of a class which overrides respond_to_missing?.
  based on a patch from Nikolai Lugovoi <nlugovoi AT gmail.com> in
  [ruby-core:25748].


git-svn-id: http://svn.ruby-lang.org/repos/ruby/trunk@25089 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

3 files changed, 21 insertions, 3 deletions

diff --git a/ChangeLog b/ChangeLog
index 3f0656f50..f0bd2e5fd 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+Fri Sep 25 13:04:46 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* proc.c (mnew): fix for instance method of Module, BasicObjec
+	  and subclass of a class which overrides respond_to_missing?.
+	  based on a patch from Nikolai Lugovoi <nlugovoi AT gmail.com> in
+	  [ruby-core:25748].
+
 Fri Sep 25 11:56:50 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* vm_method.c (rb_mod_method_defined): should return true or false.
diff --git a/proc.c b/proc.c
index ac6689d77..c6333b067 100644
--- a/proc.c
+++ b/proc.c
@@ -912,7 +912,7 @@ mnew(VALUE klass, VALUE obj, ID id, VALUE mclass, int scope)
 	ID rmiss = rb_intern("respond_to_missing?");
 	VALUE sym = ID2SYM(id);
 
-	if (!rb_method_basic_definition_p(klass, rmiss)) {
+	if (obj != Qundef && !rb_method_basic_definition_p(klass, rmiss)) {
 	    if (RTEST(rb_funcall(obj, rmiss, 1, sym))) {
 		return rb_proc_new(missing_wrap, rb_assoc_new(obj, sym));
 	    }
diff --git a/test/ruby/test_object.rb b/test/ruby/test_object.rb
index 47e4a640d..37317cfd4 100644
--- a/test/ruby/test_object.rb
+++ b/test/ruby/test_object.rb
@@ -305,8 +305,7 @@ class TestObject < Test::Unit::TestCase
   end
 
   def test_respond_to_missing
-    c = Class.new
-    c.class_eval do
+    c = Class.new do
       def respond_to_missing?(id)
         if id == :foobar
           true
@@ -335,6 +334,18 @@ class TestObject < Test::Unit::TestCase
     foobar = foo.method(:foobar)
     assert_equal([:foo], foobar.call);
     assert_equal([:foo, 1], foobar.call(1));
+
+    c = Class.new(c)
+    assert_equal(false, c.method_defined?(:foobar))
+    assert_raise(NameError, '[ruby-core:25748]') do
+      c.instance_method(:foobar)
+    end
+
+    m = Module.new
+    assert_equal(false, m.method_defined?(:foobar))
+    assert_raise(NameError, '[ruby-core:25748]') do
+      m.instance_method(:foobar)
+    end
   end
 
   def test_send_with_no_arguments