[#44036] [ruby-trunk - Feature #6242][Open] Ruby should support lists — "shugo (Shugo Maeda)" <redmine@...>

20 messages 2012/04/01

[#44084] [ruby-trunk - Bug #6246][Open] 1.9.3-p125 intermittent segfault — "jshow (Jodi Showers)" <jodi@...>

22 messages 2012/04/02

[#44156] [ruby-trunk - Feature #6265][Open] Remove 'useless' 'concatenation' syntax — "rosenfeld (Rodrigo Rosenfeld Rosas)" <rr.rosas@...>

45 messages 2012/04/06

[#44163] [ruby-trunk - Bug #6266][Open] encoding related exception with recent integrated psych — "jonforums (Jon Forums)" <redmine@...>

10 messages 2012/04/06

[#44303] [ruby-trunk - Feature #6284][Open] Add composition for procs — "pabloh (Pablo Herrero)" <pablodherrero@...>

57 messages 2012/04/12

[#44349] [ruby-trunk - Feature #6293][Open] new queue / blocking queues — "tenderlovemaking (Aaron Patterson)" <aaron@...>

10 messages 2012/04/13

[#44402] [ruby-trunk - Feature #6308][Open] Eliminate delegation from WeakRef — "headius (Charles Nutter)" <headius@...>

20 messages 2012/04/17

[#44403] [ruby-trunk - Feature #6309][Open] Add a reference queue for weak references — "headius (Charles Nutter)" <headius@...>

15 messages 2012/04/17

[#44533] [ruby-trunk - Bug #6341][Open] SIGSEGV: Thread.new { fork { GC.start } }.join — "rudolf (r stu3)" <redmine@...>

24 messages 2012/04/22

[#44630] [ruby-trunk - Feature #6361][Open] Bitwise string operations — "MartinBosslet (Martin Bosslet)" <Martin.Bosslet@...>

31 messages 2012/04/26

[#44648] [ruby-trunk - Feature #6367][Open] #same? for Enumerable — "prijutme4ty (Ilya Vorontsov)" <prijutme4ty@...>

16 messages 2012/04/26

[#44704] [ruby-trunk - Feature #6373][Open] public #self — "trans (Thomas Sawyer)" <transfire@...>

61 messages 2012/04/27

[#44748] [ruby-trunk - Feature #6376][Open] Feature lookup and checking if feature is loaded — "trans (Thomas Sawyer)" <transfire@...>

13 messages 2012/04/28

[ruby-core:44496] [ruby-trunk - Bug #5761][Closed] Array#flatten(N) calls to_ary on the (N+1)-level objects

From: "mame (Yusuke Endoh)" <mame@...>
Date: 2012-04-20 16:46:42 UTC
List: ruby-core #44496
Issue #5761 has been updated by mame (Yusuke Endoh).

Status changed from Assigned to Closed

This is already fixed in ruby-1.9.3-p194.

-- 
Yusuke Endoh <mame@tsg.ne.jp>
----------------------------------------
Bug #5761: Array#flatten(N) calls to_ary on the (N+1)-level objects
https://bugs.ruby-lang.org/issues/5761#change-26052

Author: jonleighton (Jon Leighton)
Status: Closed
Priority: Normal
Assignee: mame (Yusuke Endoh)
Category: core
Target version: 
ruby -v: ruby 1.9.3p0 (2011-10-30 revision 33570) [x86_64-linux]


$ cat flatten.rb
class Foo
  def respond_to?(name, include_private = true)
    puts "respond_to?(#{name})"
    super
  end

  def method_missing(name, *args)
    puts "method_missing(#{name})"
    super
  end
end

puts "[[Foo.new]].flatten(1)"
p [[Foo.new]].flatten(1)

puts
puts "[[[Foo.new]]].flatten(2)"
p [[[Foo.new]]].flatten(2)

puts
puts "[[[Foo.new]]].flatten(1)"
p [[[Foo.new]]].flatten(1)

$ ruby flatten.rb 
[[Foo.new]].flatten(1)
method_missing(to_ary)
respond_to?(to_ary)
[#<Foo:0x00000001ae41c8>]

[[[Foo.new]]].flatten(2)
method_missing(to_ary)
respond_to?(to_ary)
[#<Foo:0x00000001ae3d90>]

[[[Foo.new]]].flatten(1)
[[#<Foo:0x00000001ae3980>]]

$ ruby -v
ruby 1.9.3p0 (2011-10-30 revision 33570) [x86_64-linux]

Expected behaviour: no method calls are made on the (N+1)-level objects.

For what it's worth, this is the 1.8.7 output:

$ ruby flatten.rb 
[[Foo.new]].flatten(1)
respond_to?(to_ary)
[#<Foo:0x7fef3ebb1888>]

[[[Foo.new]]].flatten(2)
respond_to?(to_ary)
[#<Foo:0x7fef3ebb16a8>]

[[[Foo.new]]].flatten(1)
[[#<Foo:0x7fef3ebb14f0>]]


-- 
http://bugs.ruby-lang.org/

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