Re: [GHC] #9844: Bang pattern doesn't work on a newtype constructor

28 Nov 2014

      #9844: Bang pattern doesn't work on a newtype constructor
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              Reporter:  akio        |            Owner:
                  Type:  bug         |           Status:  new
              Priority:  normal      |        Milestone:
             Component:  Compiler    |          Version:  7.8.3
            Resolution:              |         Keywords:
      Operating System:              |     Architecture:  Unknown/Multiple
  Unknown/Multiple                   |       Difficulty:  Unknown
       Type of failure:  Incorrect   |       Blocked By:
  result at runtime                  |  Related Tickets:
             Test Case:              |
              Blocking:              |
Differential Revisions:              |
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Comment (by Simon Peyton Jones ):

 In [changeset:"227a566851f19f5a720c4a86fdb1ff99117325c6/ghc"]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="227a566851f19f5a720c4a86fdb1ff99117325c6"
 Don't discard a bang on a newtype pattern (Trac #9844)

 We were wrongly simply dropping the bang, in tidy_bang_pat.
 }}}

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Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9844#comment:1
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