[GHC] #5552: SIGSEGV in yieldCapability () when using Control.Parallel

[GHC]

#5552: SIGSEGV in yieldCapability () when using Control.Parallel
-------------------------------+--------------------------------------------
    Reporter:  tomt21          |        Owner:  simonmar     
        Type:  bug             |       Status:  new          
    Priority:  highest         |    Milestone:  7.4.1        
   Component:  Runtime System  |      Version:  7.0.4        
    Keywords:                  |     Testcase:               
   Blockedby:                  |   Difficulty:               
          Os:  Linux           |     Blocking:               
Architecture:  x86_64 (amd64)  |      Failure:  Runtime crash
-------------------------------+--------------------------------------------

Comment(by marlowsd@…):

 commit f9f0b08750af311190830f6d4de270806fe52789
 {{{
 Author: Simon Marlow <marlowsd at gmail.com>
 Date:   Mon Oct 24 13:29:32 2011 +0100

     fix race condition in yieldCapability() (#5552)

     See comment for details.  I've tried quite hard, but haven't been able
     to make a small test case that reproduces the bug.

  rts/Capability.c |   27 ++++++++++++++++++++++++++-
  1 files changed, 26 insertions(+), 1 deletions(-)
 }}}

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5552#comment:6>
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