Re: [GHC] #14650: Panic with no extensions (StgCmmEnv: variable not found)

10 Jan 2018

      #14650: Panic with no extensions (StgCmmEnv: variable not found)
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        Reporter:  Zemyla            |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.2.2
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:  x86_64
 Type of failure:  Compile-time      |  (amd64)
  crash or panic                     |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by Simon Peyton Jones <simonpj@…>):

 In [changeset:"66ff794fedf6e81e727dc8f651e63afe6f2a874b/ghc"
 66ff794f/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="66ff794fedf6e81e727dc8f651e63afe6f2a874b"
 Fix join-point decision

 This patch moves the "ok_unfolding" test
    from  CoreOpt.joinPointBinding_maybe
    to    OccurAnal.decideJoinPointHood

 Previously the occurrence analyser was deciding to make
 something a join point, but the simplifier was reversing
 that decision, which made the decision about /other/ bindings
 invalid.

 Fixes Trac #14650.
 }}}

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14650#comment:3>
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