Re: [MacRuby-devel] [MacRuby] #511: GCD crash with indirect method access

17 Dec 2009

      #511: GCD crash with indirect method access
---------------------------------------+------------------------------------
 Reporter:  joshua.ballanco@…          |       Owner:  lsansonetti@…        
     Type:  defect                     |      Status:  new                  
 Priority:  blocker                    |   Milestone:                       
Component:  MacRuby                    |    Keywords:  GCD                  
---------------------------------------+------------------------------------

Old description:
...
The following code will crash when I run it on my Mac Pro (8x2.26 GHz):
{{{
#!/usr/local/bin/macruby
class Foo
  def doit
  end
end
class Bar
  def initialize
    @foo = Foo.new
  end
def step
    @foo.doit
  end
end
@bars = []
1000.times { @bars << Bar.new }
steps = Dispatch::Group.new
@bars.each do |bar|
  Dispatch::Queue.concurrent.async(steps) { bar.step }
end
steps.wait
}}}
Commenting out the "@foo.doit" line prevents the crash.
New description:

 The following code will crash when I run it on my Mac Pro (8x2.26 GHz):

 {{{
 #!/usr/local/bin/macruby

 class Foo
   def doit
   end
 end

 class Bar
   def initialize
     @foo = Foo.new
   end

   def step
     100.times{ @foo.doit }
   end
 end

 @bars = []
 1000.times { @bars << Bar.new }

 steps = Dispatch::Group.new
 @bars.each do |bar|
   Dispatch::Queue.concurrent.async(steps) { bar.step }
 end
 steps.wait
 }}}

 Commenting out the "@foo.doit" line prevents the crash.

--

Comment(by joshua.ballanco@…):

 Adding repetitions inside of "step" makes it crash more regularly.

-- 
Ticket URL: <http://www.macruby.org/trac/ticket/511#comment:4>
MacRuby <http://macruby.org/>