[GHC] #14569: refutable let bindings produce "irrefutable pattern failed" errors

[GHC]

#14569: refutable let bindings produce "irrefutable pattern failed" errors
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        Reporter:  int-e             |                Owner:  dfeuer
            Type:  bug               |               Status:  patch
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.2.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Poor/confusing    |  Unknown/Multiple
  error message                      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D4261
       Wiki Page:                    |
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Changes (by dfeuer):

 * status:  new => patch
 * differential:   => Phab:D4261


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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14569#comment:4>
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