[MacRuby-devel] macruby 0.3 - fiber library causes segmentation fault

[Bernard Kenik]

I am not sure if this is a know problem and so I have not written a  
ticket.
I jave tried several small scripts with the similiar error messages.

Trying to learn about fiber in ruby 1.9 -- I used the following  
example from the PragDave: Pipelines Using Fibers in Ruby 1.9 webpage.

renard$ cat first_fiber.rb
################# start of code
require 'fiber'

evens = Fiber.new do
   value = 0
   loop do
     Fiber.yield value
     value += 2
   end
end

consumer = Fiber.new do
   10.times do
     next_value = evens.resume
     puts next_value
   end
end

consumer.resume
############### end of code
renard$ macruby first_fiber.rb

with the following results


first_fiber.rb:13: [BUG] Segmentation fault
MacRuby version 0.3 (ruby 1.9.0 2008-06-03) [universal-darwin9.0]

-- stack frame ------------
0000 (0x1283800): 00000000
0001 (0x1283804): 00000004
0002 (0x1283808): 010adffd
0003 (0x128380c): 00000015
0004 (0x1283810): 00000004
0005 (0x1283814): 0128776d
0006 (0x1283818): 00000004
0007 (0x128381c): 00000004
0008 (0x1283820): 01283809 (= 2)
0009 (0x1283824): 010ae260
0010 (0x1283828): 00000004
0011 (0x128382c): 00000001 <- lfp <- dfp
-- control frame ----------
c:0007 p:---- s:0012 b:0012 l:000011 d:000011 CFUNC  :resume
c:0006 p:0009 s:0009 b:0009 l:0026bc d:000008 BLOCK  first_fiber.rb:13
c:0005 p:---- s:0008 b:0008 l:000007 d:000007 FINISH
c:0004 p:---- s:0006 b:0006 l:000005 d:000005 CFUNC  :times
c:0003 p:0008 s:0003 b:0003 l:0026bc d:000002 BLOCK  first_fiber.rb:12
c:0002 p:---- s:0003 b:0003 l:000002 d:000002 FINISH
c:0001 p:---- s:0001 b:-001 l:000000 d:000000 ------
---------------------------
DBG> : "first_fiber.rb:13:in `resume'"
DBG> : "first_fiber.rb:13:in `block (2 levels) in <main>'"
DBG> : "first_fiber.rb:12:in `times'"
DBG> : "first_fiber.rb:12:in `block in <main>'"
-- backtrace of native function call (Use addr2line) --
0x2d4e06
0x1f3efc
0x1f3f3b
0x28a641
0x9557209b
0xffffffff
0x2daf76
0x947db28a
0x92c2c4d1
-------------------------------------------------------
Abort trap

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