From 69eab6991a64b6dff4209f96d719680a875b0d89 Mon Sep 17 00:00:00 2001
From: nagachika <nagachika@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Tue, 27 May 2014 16:03:12 +0000
Subject: merge revision(s) r45179,r45564,r45565,r45584,r45585: [Backport
 #9721]

	envutil.rb: move labeled_module and labeled_class

	* test/ruby/envutil.rb (labeled_module, labeled_class): move from
  test/ruby/test_module.rb.
	* proc.c (rb_method_call_with_block, umethod_bind): call with
	  IClass including the module for a module instance method.
	  [ruby-core:61936] [Bug #9721]

	* vm_insnhelper.c (vm_search_super_method): allow bound
	  UnboundMethod case.

	* proc.c (umethod_bind): use the ancestor iclass instead of new
	  iclass to get rid of infinite recursion, if the defined module
	  is already included.  [ruby-core:62014] [Bug #9721]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_1@46190 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 object.c | 32 +++++++++++++++++++++-----------
 1 file changed, 21 insertions(+), 11 deletions(-)

(limited to 'object.c')

diff --git a/object.c b/object.c
index bb43b4617e..3885d9bf70 100644
--- a/object.c
+++ b/object.c
@@ -584,6 +584,8 @@ class_or_module_required(VALUE c)
     return c;
 }
 
+static VALUE class_search_ancestor(VALUE cl, VALUE c);
+
 /*
  *  call-seq:
  *     obj.instance_of?(class)    -> true or false
@@ -644,15 +646,27 @@ rb_obj_is_kind_of(VALUE obj, VALUE c)
     VALUE cl = CLASS_OF(obj);
 
     c = class_or_module_required(c);
-    c = RCLASS_ORIGIN(c);
+    return class_search_ancestor(cl, RCLASS_ORIGIN(c)) ? Qtrue : Qfalse;
+}
+
+static VALUE
+class_search_ancestor(VALUE cl, VALUE c)
+{
     while (cl) {
 	if (cl == c || RCLASS_M_TBL_WRAPPER(cl) == RCLASS_M_TBL_WRAPPER(c))
-	    return Qtrue;
+	    return cl;
 	cl = RCLASS_SUPER(cl);
     }
-    return Qfalse;
+    return 0;
 }
 
+VALUE
+rb_class_search_ancestor(VALUE cl, VALUE c)
+{
+    cl = class_or_module_required(cl);
+    c = class_or_module_required(c);
+    return class_search_ancestor(cl, RCLASS_ORIGIN(c));
+}
 
 /*
  *  call-seq:
@@ -1548,16 +1562,12 @@ rb_class_inherited_p(VALUE mod, VALUE arg)
 	rb_raise(rb_eTypeError, "compared with non class/module");
     }
     arg = RCLASS_ORIGIN(arg);
-    while (mod) {
-	if (RCLASS_M_TBL_WRAPPER(mod) == RCLASS_M_TBL_WRAPPER(arg))
-	    return Qtrue;
-	mod = RCLASS_SUPER(mod);
+    if (class_search_ancestor(mod, arg)) {
+	return Qtrue;
     }
     /* not mod < arg; check if mod > arg */
-    while (arg) {
-	if (RCLASS_M_TBL_WRAPPER(arg) == RCLASS_M_TBL_WRAPPER(start))
-	    return Qfalse;
-	arg = RCLASS_SUPER(arg);
+    if (class_search_ancestor(arg, start)) {
+	return Qfalse;
     }
     return Qnil;
 }
-- 
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