# \[Bug #3445\] 1.9.2-preview3 $B$G(B Object#extend $B$9$k$H(B public\_methods(false) $B$+$i%a%=%C

**URL:** <https://www.ruby-forum.com/t/bug-3445-1-9-2-preview3-b-g-b-object-extend-b-9-k-h-b-public-methods-false-b-i-a-c/190205>\
**Category:** Development\
**Created:** [June 17, 2010, 4:22pm UTC](https://www.ruby-forum.com/t/bug-3445-1-9-2-preview3-b-g-b-object-extend-b-9-k-h-b-public-methods-false-b-i-a-c/190205 "2010-06-17T16:22:19Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![Yusuke\_E](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/y/f08c70/32.png) [@Yusuke\_E](https://www.ruby-forum.com/u/Yusuke_E)\
**Post date:** [June 17, 2010, 4:22pm UTC](https://www.ruby-forum.com/t/bug-3445-1-9-2-preview3-b-g-b-object-extend-b-9-k-h-b-public-methods-false-b-i-a-c/190205/1 "2010-06-17T16:22:19Z")

</div>

Bug #3445: 1.9.2-preview3 e$B$Ge(B Object#extend e$B$9$k$He(B  
public\_methods(false) e$B$+$i%a%=%C%IL\>$,\>C$($ke(B  
[http://redmine.ruby-lang.org/issues/show/3445](http://redmine.ruby-lang.org/issues/show/3445)

e$B5/I\<\<Te(B: Yusuke E.  
e$B%9%F!\<%?%9e(B: Open, e$BM%@hEYe(B: Normal  
e$B%+%F%4%je(B: core, Target version: 1.9.2  
ruby -v: 1.9.2-preview3

[ruby-dev:41553] e$B$,e(B redmine ML  
e$BO"7H$NITD4$G%A%1%C%H2=$5$l$J$+$C$?e(B  
e$B$h$&$J$N$G!"\<jF0$GEPO?$7$^$9!#e(B

* * *

e$B6a1J$H?=$7$^$9!#e(B

1.9.2-preview3 e$B$_$h$Se(B trunk e$B$K$F!“0J2\<$N$h$&$Ke(B Object#extend  
e$B$9$k$He(B  
public\_methods(false)  
e$B$GJV$9%a%=%C%I%j%9%H$+$i85!9$”$C$?%a%=%C%I$,\>C$($^$9!#e(B  
e$B$3$l$O;EMMJQ99$G$7$g$&$+!)e(B 1.9.1 e$B$_$h$Se(B 1.9.2-preview1  
e$B$G$Oe(B  
e$B$I$A$i$b85$N%a%=%C%Ie(B + extend e$B$7$?%b%8%e!\<%k$Ne(B public  
e$B%a%=%C%I$rJV$7$F$$$^$7$?!#e(B  
NEWS  
e$B%U%!%$%k$O$6$C$HL$rDL$7$^$7$?$,3:Ev$7$=$&$J$H$3$m$O8+$D$1$i$l$^$;$s$G$7$?!#e(B

module M  
def m1; end  
def m2; end  
module\_function :m2  
end

class A  
def a; end  
end

obj = A.new  
p obj.public\_methods(false) # =\> [:a]

obj.extend(M)  
p obj.public\_methods(false) # =\> trunk, 1.9.2-preview3 =\> []  
# =\> 1.9.1, 1.9.2-preview1 =\> [:m1, :a]

–  
Chikanaga Tomoyuki  
Nippon Control System Corp.