[MacRuby] #1347: Segfault occurs when invoked a Module#define_method within some threads.

[MacRuby]

#1347: Segfault occurs when invoked a Module#define_method within some threads.
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 Reporter:  watson1978@…          |       Owner:  lsansonetti@…        
     Type:  defect                |      Status:  new                  
 Priority:  blocker               |   Milestone:                       
Component:  MacRuby               |    Keywords:                       
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Comment(by lsansonetti@…):

 I agree for locking around add_method(). But I don't think locking in
 rb_vm_add_lvar_use() is the way to go. I believe the lvar_use thing has
 never been designed for thread safety, and I wonder if there isn't a
 better way to solve these race conditions.

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Ticket URL: <http://www.macruby.org/trac/ticket/1347#comment:3>
MacRuby <http://macruby.org/>