[MacRuby] #1409: Dispatch related crash in core data document app

[MacRuby]

#1409: Dispatch related crash in core data document app
--------------------------------+-------------------------------------------
 Reporter:  sas@…               |       Owner:  lsansonetti@…        
     Type:  defect              |      Status:  new                  
 Priority:  critical            |   Milestone:  MacRuby 0.11         
Component:  MacRuby             |    Keywords:                       
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 I'm seeing a crash when using Dispatch::Queue to send a block with an
 argument:
 {{{
     queue = Dispatch::Queue.new('myqueue')
     queue.async do
       @a.dispatch do |t|
         puts "handling #{t}"
       end
     end
 }}}
 to a method:
 {{{
 class A
   def dispatch(&block)
     puts "dispatch"
     yield 'ret'
   end
 end
 }}}

 The crash usually occurs on the second submission of the block. There are
 a few things I tried to isolate this problem:
 - I've wired three buttons to different kinds of dispatch calls and
 labeled them for the results I get
 - I originally noticed the problem in my core data doc app. When trying to
 reduce the problem to a simple app, it disappeared. The project "Disp1" is
 the simple version where everything works, "Disp2" is the core data
 document app that exposes the problem.

 Version info: 10.7, Xcode 4.2, MR-0.11 (Oct-17)

-- 
Ticket URL: <http://www.macruby.org/trac/ticket/1409>
MacRuby <http://macruby.org/>