[GHC] #4504: "awaitSignal Nothing" does not block thread with -threaded

[GHC]

#4504: "awaitSignal Nothing" does not block thread with -threaded
---------------------------------+------------------------------------------
    Reporter:  adept             |       Owner:                             
        Type:  bug               |      Status:  new                        
    Priority:  normal            |   Component:  Runtime System             
     Version:  7.0.1             |    Keywords:                             
    Testcase:                    |   Blockedby:                             
          Os:  Unknown/Multiple  |    Blocking:                             
Architecture:  Unknown/Multiple  |     Failure:  Incorrect result at runtime
---------------------------------+------------------------------------------

Comment(by adept):

 Debian sid, GHC 6.12.3 from the binary package: same behavior (exits with
 "-threaded").

 Versions of unix package:

 {{{
 6.12.1: 2.4.0.0
 6.12.3: 2.4.0.2
 7.0.1:  2.4.1.0
 }}}

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4504#comment:1>
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