[GHC] #2169: Compilation fails first time without giving an error, later succeeds without changing code

[GHC]

#2169: Compilation fails first time without giving an error, later succeeds
without changing code
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 Reporter:  nccb      |          Owner:                
     Type:  bug       |         Status:  new           
 Priority:  normal    |      Milestone:  6.8.3         
Component:  Compiler  |        Version:  6.8.2         
 Severity:  normal    |     Resolution:                
 Keywords:            |     Difficulty:  Unknown       
 Testcase:            |   Architecture:  x86_64 (amd64)
       Os:  Linux     |  
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Comment (by simonmar):

 I can't reproduce it either (on x86).

 I looked at the code in GHC and can't see any obvious bugs in this area.
 The way that the bug seems to be hard to reproduce indicates that it is
 based on something fragile - perhaps some runtime mutation with
 unsafePerformIO, or some strange RTS bug.  But it looks like it might only
 be reproducible on x86_64 - Ian, do you have a 64-bit box to test it on?
 I don't have easy access to one right now.

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/2169#comment:7>
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