[GHC] #15241: Validate failures in sanity way

[GHC]

#15241: Validate failures in sanity way
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        Reporter:  osa1              |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:  8.8.1
       Component:  Runtime System    |              Version:  8.5
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #14915, #15906    |  Differential Rev(s):  Phab:D4839
       Wiki Page:                    |
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Changes (by osa1):

 * related:  #14915 => #14915, #15906


Comment:

 Tracking `memo001` in #15906

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15241#comment:14>
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