Re: [GHC] #13615: Nondeterminism in ‘pure’ function w/ parallel evaluation & memo combinators

GHC ghc-devs at haskell.org
Fri Apr 28 18:18:57 UTC 2017


#13615: Nondeterminism in ‘pure’ function w/ parallel evaluation & memo combinators
-------------------------------------+-------------------------------------
        Reporter:  pacak             |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  highest           |            Milestone:  8.2.1
       Component:  Compiler          |              Version:  8.2.1-rc2
      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):
       Wiki Page:                    |
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Comment (by Ben Gamari <ben@…>):

 In [changeset:"228d4670e98e4fd998c847aac38c11ad85aa35a7/ghc"
 228d4670/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="228d4670e98e4fd998c847aac38c11ad85aa35a7"
 Use memcpy in cloneArray

 While looking at #13615 I noticed that there was this strange open-coded
 memcpy in the definition of the cloneArray macro. I don't see why this
 should be preferable to memcpy.

 Test Plan: Validate, particularly focusing on array operations

 Reviewers: simonmar, tibbe, austin, alexbiehl

 Reviewed By: tibbe, alexbiehl

 Subscribers: alexbiehl, rwbarton, thomie

 Differential Revision: https://phabricator.haskell.org/D3504
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13615#comment:27>
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