vm_method.c: fix method_removed

* vm_method.c: call method_removed hook on called class, not on
  prepending iclass.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39234 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,8 @@
+Thu Feb 14 10:30:41 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* vm_method.c: call method_removed hook on called class, not on
+	  prepending iclass.
+
 Thu Feb 14 10:05:57 2013  Eric Hodel  <drbrain@segment7.net>
 
 	* lib/net/http:  Do not handle Content-Encoding when the user sets

test/ruby/test_module.rb

@@ -1382,12 +1382,27 @@ class TestModule < Test::Unit::TestCase
   end
 
   def test_prepend_remove_method
+    c = Class.new do
+      prepend Module.new {def foo; end}
+    end
     assert_raise(NameError) do
-      Class.new do
-        prepend Module.new {def foo; end}
+      c.class_eval do
         remove_method(:foo)
       end
     end
+    c.class_eval do
+      def foo; end
+    end
+    removed = nil
+    c.singleton_class.class_eval do
+      define_method(:method_removed) {|id| removed = id}
+    end
+    assert_nothing_raised(NoMethodError, NameError) do
+      c.class_eval do
+        remove_method(:foo)
+      end
+    end
+    assert_equal(:foo, removed)
   end
 
   def test_prepend_class_ancestors

vm_method.c

@@ -648,6 +648,7 @@ remove_method(VALUE klass, ID mid)
 {
     st_data_t key, data;
     rb_method_entry_t *me = 0;
+    VALUE self = klass;
 
     klass = RCLASS_ORIGIN(klass);
     if (klass == rb_cObject) {
@@ -674,7 +675,7 @@ remove_method(VALUE klass, ID mid)
     rb_clear_cache_for_undef(klass, mid);
     rb_unlink_method_entry(me);
 
-    CALL_METHOD_HOOK(klass, removed, mid);
+    CALL_METHOD_HOOK(self, removed, mid);
 }
 
 void