Re: [GHC] #14408: error in refineFromInScope

8 Nov 2017

      #14408: error in refineFromInScope
-------------------------------------+-------------------------------------
        Reporter:  duog              |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.3
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
-------------------------------------+-------------------------------------

Comment (by Simon Peyton Jones ):

 In [changeset:"fe6848f544c2a14086bcef388c46f4070c22d287/ghc"
 fe6848f5/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="fe6848f544c2a14086bcef388c46f4070c22d287"
 Fix in-scope set in simplifier

 This patch fixes Trac #14408.  The problem was that the StaticEnv
 field of an ApplyToVar or Select continuation didn't have enough
 variables in scope.  The fix is simple, and I documented the
 invariant in Note [StaticEnv invariant] in SimplUtils.

 No change in behaviour: this just stops an ASSERT from tripping.
 }}}

-- 
Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14408#comment:1
GHC http://www.haskell.org/ghc/
The Glasgow Haskell Compiler