[GHC] #8276: Building Haddock documentation panics with perf build on x86_64 Linux

[GHC]

#8276: Building Haddock documentation panics with perf build on x86_64 Linux
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        Reporter:  jstolarek           |            Owner:
            Type:  bug                 |           Status:  new
        Priority:  high                |        Milestone:
       Component:  Documentation       |          Version:  7.7
      Resolution:                      |         Keywords:
Operating System:  Unknown/Multiple    |     Architecture:  x86_64 (amd64)
 Type of failure:  Compile-time crash  |       Difficulty:  Unknown
       Test Case:                      |       Blocked By:
        Blocking:                      |  Related Tickets:
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Comment (by kazu-yamamoto):

 I guess that a7f9930a24a91cfb5e2579867e5a0b1d83b5a947 by jstolarek
 introduced this bug. Since I cannot revert this patch due to the changes
 after this patch, I could not verify yet.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8276#comment:9>
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