Bug #9003: Range.new on objects without <=> but with Comparable does raise SystemStackError, and if this is catched it crash in "Segmentation fault"

• Status: Closed
• Assignee: -
• 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

[Hanmac (Hans Mackowiak)]

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

[Hanmac (Hans Mackowiak)]

about JRuby ... i heard that it ignores the "rescue SystemStackError" clause ... i try to file an bug somewhere

[nobu (Nobuyoshi Nakada)]

• Status changed from Open to Closed
• % Done changed from 0 to 100

This issue was solved with changeset r43208.
Hans, thank you for reporting this issue.
Your contribution to Ruby is greatly appreciated.
May Ruby be with you.

---

compar.c: fail if recursion

• compar.c (cmp_eq): fail if recursion. [ruby-core:57736] [Bug #9003]
• thread.c (rb_exec_recursive_paired_outer): new function which is
  combinnation of paired and outer variants.

[nobu (Nobuyoshi Nakada)]

• Description updated (diff)
• Backport changed from 1.9.3: UNKNOWN, 2.0.0: UNKNOWN to 1.9.3: REQUIRED, 2.0.0: REQUIRED

[nagachika (Tomoyuki Chikanaga)]

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

backport r43208 to ruby_2_0_0 at r43230.

[usa (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.