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merge revision(s) 40013,40032: [Backport #8188]

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* class.c (HAVE_METACLASS_P): should check FL_SINGLTON flag before get
	  instance variable to get rid of wrong warning about __attached__.
	  [ruby-core:53839] [Bug #8188]

	* class.c (HAVE_METACLASS_P): should check FL_SINGLETON flag before get


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@40294 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nagachika 2013-04-14 15:17:44 +00:00
parent 5525ff192c
commit c6c33ec6ff
4 changed files with 23 additions and 2 deletions
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10
class.c
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@ -307,6 +307,14 @@ rb_singleton_class_attached(VALUE klass, VALUE obj)
*/
#define META_CLASS_OF_CLASS_CLASS_P(k) (METACLASS_OF(k) == (k))
/*!
* whether k has a metaclass
* @retval 1 if \a k has a metaclass
* @retval 0 otherwise
*/
#define HAVE_METACLASS_P(k) \
(FL_TEST(METACLASS_OF(k), FL_SINGLETON) && \
rb_ivar_get(METACLASS_OF(k), id_attached) == (k))
/*!
* ensures \a klass belongs to its own eigenclass.
@ -316,7 +324,7 @@ rb_singleton_class_attached(VALUE klass, VALUE obj)
* @note this macro creates a new eigenclass if necessary.
*/
#define ENSURE_EIGENCLASS(klass) \
(rb_ivar_get(METACLASS_OF(klass), id_attached) == (klass) ? METACLASS_OF(klass) : make_metaclass(klass))
(HAVE_METACLASS_P(klass) ? METACLASS_OF(klass) : make_metaclass(klass))
/*!