Forum: Ruby-core [Bug #3722] segfault in rb_iterate (1.9.3, r29057)

Bug #3722: segfault in rb_iterate (1.9.3, r29057)
http://redmine.ruby-lang.org/issues/show/3722

Author: Cezary Baginski
Status: Open, Priority: High
Category: core, Target version: 1.9.3
ruby -v: ruby 1.9.3dev (2010-08-19 trunk 29056) [x86_64-linux]

Reproducible every time while running bundler + cucumber + rprofile on a 
private rails project
(hard to reduce).

The second attached contains a short gdb session using Ruby with 
-g3/-O0/-ggdb.

I know this isn't much, but let me know if there is anything else I can 
do to help out.

Issue #3722 has been updated by Cezary Baginski.


I started tearing everything apart and came up with this minimal case:

 % ruby --version
ruby 1.9.3dev (2010-08-19 trunk 29056) [x86_64-linux]

 % cat fail.rb
require 'profile'
class A
  include Enumerable

  def each
    yield 1
  end
end
A.new.any? { true }

 % ruby fail.rb
fail.rb: [BUG] cfp consistency error - send
ruby 1.9.3dev (2010-08-19 trunk 29056) [x86_64-linux]

-- control frame ----------
c:0001 p:0000 s:0002 b:0002 l:002598 d:002598 TOP
---------------------------

-- C level backtrace information 
-------------------------------------------
ruby() [0x52af54]
ruby() [0x565192]
ruby(rb_bug+0xcf) [0x565298]
ruby() [0x514c98]
ruby() [0x5152f1]
ruby() [0x51a9b3]
ruby() [0x527a23]
ruby() [0x52844d]
ruby() [0x41786f]
ruby(ruby_exec_node+0x24) [0x417982]
ruby(ruby_run_node+0x3e) [0x417955]
ruby() [0x416111]
/lib/libc.so.6(__libc_start_main+0xfd) [0x7f84bb51ac4d]
ruby() [0x415fe9]

[NOTE]
You may have encountered a bug in the Ruby interpreter or extension 
libraries.
Bug reports are welcome.
For details: http://www.ruby-lang.org/bugreport.html

[1]    15653 abort      ruby fail.rb

----------------------------------------
http://redmine.ruby-lang.org/issues/show/3722

Issue #3722 has been updated by Nobuyoshi Nakada.

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

This issue was solved with changeset r29155.
Cezary, thank you for reporting this issue.
Your contribution to Ruby is greatly appreciated.
May Ruby be with you.

----------------------------------------
http://redmine.ruby-lang.org/issues/show/3722