[ruby-core:38455] [Ruby 1.9 - Bug #5090] Segfault using Enumerator

Issue #5090 has been updated by Robert Syme.


I notice that gdb reports "no debugging symbols found". Do I need to recompile ruby for this to work? Do I need to provide a particular flag to configure, and if so, what flag? Sorry for my ignorance, this is my first ruby bug report.
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Bug #5090: Segfault using Enumerator
http://redmine.ruby-lang.org/issues/5090

Author: Robert Syme
Status: Open
Priority: Normal
Assignee: 
Category: core
Target version: 
ruby -v: ruby 1.9.2p180 (2011-02-18 revision 30909) [x86_64-linux] 


Running bug_report.rb on my laptop simply raises a StopIteration as expected, but running it on a compute cluster node (Intel Xeon 2.93 GHz - Nehalem series) generates a segfault (below, and in "gcc and output.txt" when getting the next element from an Enumerator.
Ruby was compiled as described in configure.log and make.log


$ ruby bug_report.rb  bug_report.rb  bug_report.rb 
bug_report.rb:6: [BUG] Segmentation fault
ruby 1.9.2p180 (2011-02-18 revision 30909) [x86_64-linux]

-- control frame ----------
c:0009 p:---- s:0027 b:0027 l:000050 d:000050 CFUNC  :next
c:0008 p:0011 s:0024 b:0024 l:0006c8 d:000023 BLOCK  bug_report.rb:6
c:0007 p:---- s:0019 b:0019 l:000018 d:000018 FINISH
c:0006 p:---- s:0017 b:0017 l:0021d0 d:0021d0 CFUNC  :each
c:0005 p:---- s:0015 b:0015 l:000014 d:000014 CFUNC  :each
c:0004 p:---- s:0013 b:0013 l:002100 d:002100 CFUNC  :count
c:0003 p:0104 s:0010 b:0009 l:0006c8 d:001920 EVAL   bug_report.rb:18
c:0002 p:---- s:0004 b:0004 l:000003 d:000003 FINISH
c:0001 p:0000 s:0002 b:0002 l:0006c8 d:0006c8 TOP   
---------------------------
-- Ruby level backtrace information ----------------------------------------
bug_report.rb:18:in `<main>'
bug_report.rb:18:in `count'
bug_report.rb:18:in `each'
bug_report.rb:18:in `each'
bug_report.rb:6:in `block in <main>'
bug_report.rb:6:in `next'

-- C level backtrace information -------------------------------------------
/home/585/rxs585/.rvm/rubies/ruby-1.9.2-p180/lib/libruby.so.1.9(rb_vm_bugreport+0x66) [0x7ffff7a8fde6]
/home/585/rxs585/.rvm/rubies/ruby-1.9.2-p180/lib/libruby.so.1.9(rb_bug+0x189) [0x7ffff79087f9]
/home/585/rxs585/.rvm/rubies/ruby-1.9.2-p180/lib/libruby.so.1.9 [0x7ffff79f55fe]
/lib64/libpthread.so.0 [0x7ffff7651b10]
[0x7ffff7ffa850]

[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

Aborted





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