[GHC] #14290: Strictness bug with existential contexts on data constructors

[GHC]

#14290: Strictness bug with existential contexts on data constructors
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        Reporter:  simonmar          |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  highest           |            Milestone:  8.2.2
       Component:  Compiler          |              Version:  8.2.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Incorrect result  |  Unknown/Multiple
  at runtime                         |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D4040
       Wiki Page:                    |
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Comment (by Ben Gamari <ben@…>):

 In [changeset:"5935acdb1302263011c2023d5e7f4ec496c972c0/ghc" 5935acd/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="5935acdb1302263011c2023d5e7f4ec496c972c0"
 mkDataConRep: fix bug in strictness signature (#14290)

 The strictness signature for a data con wrapper wasn't including any
 dictionary arguments, which meant that bangs on the fields of a
 constructor with an existential context would be moved to the wrong
 fields.  See T14290 for an example.

 Test Plan:
 * New test T14290
 * validate

 Reviewers: simonpj, niteria, austin, bgamari, erikd

 Reviewed By: simonpj, bgamari

 Subscribers: rwbarton, thomie

 GHC Trac Issues: #14290

 Differential Revision: https://phabricator.haskell.org/D4040
 }}}

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14290#comment:4>
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