[GHC] #10375: arm: ghci.debugger tests hit illegal instruction

[GHC]

#10375: arm: ghci.debugger tests hit illegal instruction
-------------------------------------+---------------------------------
        Reporter:  erikd             |                   Owner:
            Type:  bug               |                  Status:  new
        Priority:  normal            |               Milestone:  7.12.1
       Component:  GHCi              |                 Version:  7.11
      Resolution:                    |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:  arm
 Type of failure:  GHCi crash        |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:                    |  Differential Revisions:
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Comment (by erikd):

 The tests failures for `ghci053 ghcirun001 ghcirun002` all seem to be
 instances of the same failure, and can be boiled down to a mimimal example
 of:

 {{{
 data Planet = Mercury | Venus deriving Eq
 Mercury == Mercury
 }}}

 Deriving Eq followed by a comparison is enough to cause GHCi to die with
 `Illegal instruction`. Turning this script into a program, compiling it
 and running the program works as it should.

 This is purely a GHCi issue, quite possibly the run time linker.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10375#comment:2>
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