[GHC] #15718: Build panic on ghc-8.6.1 under FreeBSD when using -fllvm

[GHC]

#15718: Build panic on ghc-8.6.1 under FreeBSD when using -fllvm
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        Reporter:  gwright           |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.6.1
      Resolution:                    |             Keywords:
Operating System:  FreeBSD           |         Architecture:  x86_64
 Type of failure:  Compile-time      |  (amd64)
  crash or panic                     |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by gwright):

 The publicly accessible source code for the linear system solver is at
 [https://github.com/gwright83/luSolve], though that version doesn't
 specify building with LLVM in the .cabal file.  The .cabal file attached
 to this ticket is the one that exhibits the failure.

 The build OS is FreeBSD 11.2.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15718#comment:1>
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