[GHC] #12658: GHC 7.10.3 sometimes reports unimplemented/strange closure type 63270

[GHC]

#12658: GHC 7.10.3 sometimes reports unimplemented/strange closure type 63270
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           Reporter:  clint     |             Owner:
               Type:  bug       |            Status:  new
           Priority:  normal    |         Milestone:
          Component:  Compiler  |           Version:  7.10.3
           Keywords:            |  Operating System:  Linux
       Architecture:  powerpc   |   Type of failure:  Compile-time crash
          Test Case:            |        Blocked By:
           Blocking:            |   Related Tickets:
Differential Rev(s):            |         Wiki Page:
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 This happened when building http-link-header.

 {{{
 ghc: internal error: scavenge: unimplemented/strange closure type 63270 @
 0xf36de0a8ghc: internal error: scavenge: unimplemented/strange closure
 type 63270 @ 0xf36de0a8
     (GHC version 7.10.3 for powerpc_unknown_linux)
     Please report this as a GHC bug:
 http://www.haskell.org/ghc/reportabug
 }}}

 Sometimes it segfaults instead.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12658>
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