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List: ruby-core
Subject: [ruby-core:51180] [ruby-trunk - Bug #7564] r38175 introduces incompatibility
From: "zenspider (Ryan Davis)" <redmine () ruby-lang ! org>
Date: 2012-12-29 4:35:21
Message-ID: redmine.journal-35131.20121229133520 () ruby-lang ! org
[Download RAW message or body]
Issue #7564 has been updated by zenspider (Ryan Davis).
I still think this is a bug, as shown by needing a respond_to? that does nothing more \
than call super:
class Sexp < Array
def inspect
"s(#{map(&:inspect).join ', '})"
end
def respond_to? meth
super
end if ENV["WHY_DO_I_NEED_THIS"]
def method_missing meth, delete = false
raise "shouldn't be here: #{meth.inspect}"
end
end
def s *args
Sexp.new args
end
p Marshal.load Marshal.dump s(1, 2, 3)
puts
# % WHY_DO_I_NEED_THIS=1 ruby20 trunk_bug.rb && ruby20 trunk_bug.rb
# s(1, 2, 3)
#
# trunk_bug.rb:11:in `method_missing': shouldn't be here: :marshal_dump \
(RuntimeError) # from trunk_bug.rb:19:in `dump'
# from trunk_bug.rb:19:in `<main>'
----------------------------------------
Bug #7564: r38175 introduces incompatibility
https://bugs.ruby-lang.org/issues/7564#change-35131
Author: tenderlovemaking (Aaron Patterson)
Status: Rejected
Priority: Normal
Assignee: mame (Yusuke Endoh)
Category: core
Target version: 2.0.0
ruby -v: ruby 2.0.0dev (2012-12-15 trunk 38381) [x86_64-darwin12.2.1]
r38175 introduces incompatibility with 1.9.3. Before r38175, when looking for _dump, \
Marshal would not call method_missing. Now marshal calls method_missing when trying \
to dump.
The following example exits with no error on 1.9.3, but on trunk it raises an \
exception (_dump() must return string (TypeError)):
class TR
def initialize calls = []
@calls = calls
end
def method_missing name, *args
@calls << [name, args]
end
end
Marshal.dump TR.new
I've attached a test case.
--
http://bugs.ruby-lang.org/
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