From: usa@...
Date: 2014-01-29T05:05:24+00:00
Subject: [ruby-core:60197] [ruby-trunk - Bug #9003] Range.new on objects without <=> but with Comparable does raise SystemStackError, and if this is catched it crash in "Segmentation fault"

Issue #9003 has been updated by Usaku NAKAMURA.

Backport changed from 1.9.3: REQUIRED, 2.0.0: DONE to 1.9.3: DONE, 2.0.0: DONE

backported into ruby_1_9_3 at r44742.

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Bug #9003: Range.new on objects without <=> but with Comparable does raise SystemStackError, and if this is catched it crash in "Segmentation fault"
https://bugs.ruby-lang.org/issues/9003#change-44681

* Author: Hans Mackowiak
* Status: Closed
* Priority: Urgent
* Assignee: 
* Category: 
* Target version: 
* ruby -v: ruby 2.1.0dev (2013-10-09) [x86_64-darwin12.5.0]
* Backport: 1.9.3: DONE, 2.0.0: DONE
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this code causes "Segmentation fault: 11"


o1=Object.new
o1.extend(Comparable)
o2=Object.new
o2.extend(Comparable)

begin
p Range.new(o1,o2)  # raises Stack Error
rescue SystemStackError 
end

begin
p Range.new(o1,o2)  # Segmentation fault: 11
rescue SystemStackError
end



i tested also other ruby versions:

Crashs for versions:
ruby 2.1.0dev (2013-10-09) [x86_64-darwin12.5.0]
ruby 2.0.0p247 (2013-06-27 revision 41674) [x86_64-darwin12.3.0]
ruby 2.0.0p247 (2013-06-27 revision 41674) [x86_64-linux]

works for versions:
ruby 2.1.0dev (2013-09-22 trunk 43011) [i686-linux]
ruby 2.0.0p247 (2013-06-27) [i386-mingw32]
ruby 2.0.0p0 (2013-02-24 revision 39474) [i686-linux]


from what i can see it looks like an 64bit problem on MRI

it seems to work on rubinius 64bit




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