[GHC] #14626: No need to enter a scrutinised value

[GHC]

#14626: No need to enter a scrutinised value
-------------------------------------+-------------------------------------
        Reporter:  heisenbug         |                Owner:  heisenbug
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.2.2
      Resolution:                    |             Keywords:  performance
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:  14677             |             Blocking:
 Related Tickets:  #13861 #14677     |  Differential Rev(s):
       Wiki Page:                    |
-------------------------------------+-------------------------------------

Comment (by heisenbug):

 With the fix in #14677 I mostly get
 {{{
   HC [stage 2] utils/ghctags/dist-install/build/Main.dyn_o
   HC [stage 2] utils/check-api-annotations/dist-install/build/Main.dyn_o
   HC [stage 2] utils/check-ppr/dist-install/build/Main.dyn_o
 epollControl: does not exist (No such file or directory)
 epollControl: does not exist (No such file or directory)
 epollControl: does not exist (No such file or directory)
 }}}
 But at least no assertion failure related to tagging any more. (x86-64
 darwin still has a snag).

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14626#comment:44>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler