[GHC] #11371: Bogus in-scope set in substitutions

[GHC]

#11371: Bogus in-scope set in substitutions
-------------------------------------+-------------------------------------
        Reporter:  simonpj           |                Owner:  niteria
            Type:  bug               |               Status:  new
        Priority:  high              |            Milestone:  8.2.1
       Component:  Compiler          |              Version:  7.10.3
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #11360            |  Differential Rev(s):  phab:D1792,
       Wiki Page:                    |  phab:D1801, phab:D1802
-------------------------------------+-------------------------------------

Comment (by niteria):

 I've just run `make TEST="conc014 T3279 conc012 print029 print025 print022
 print006 print005 print003 print008 break018 T2740 hist001 break017
 break010 break011 break012 dynbrk002 print032 print030 print031 print010
 print018 print019 break027 break026 break021 break020 break009 break006
 break005 break003 break028 break001 result001 tcrun028 T8119 T7653
 exceptionsrun001 break022 tc180 T4969 tc152 tc187 tc126 tc125 Vta1 Vta2
 overloadedlabelsghci01 T11351 T3023 tcfail093 T10728 T7332 T6015 T11248
 T6015a T6068 VtaParse dynamic-paper haddock.Cabal" CLEANUP=1 slow` on
 `80265c4c3c827695e92dd9620faf47e064b5da37` a revision right before my
 commit and it's failing with this:

 {{{
 Unexpected results from:
 TEST="conc014 T3279 conc012 exceptionsrun001 T11351 Vta1 Vta2 T10728
 T11248 VtaParse dynamic-paper"

 OVERALL SUMMARY for test run started at Wed Jan 20 06:16:25 2016 PST
  0:03:42 spent to go through
       61 total tests, which gave rise to
      137 test cases, of which
        2 were skipped

        1 had missing libraries
      111 expected passes
        0 expected failures

        0 caused framework failures
        0 unexpected passes
       23 unexpected failures
        0 unexpected stat failures

 Unexpected failures:
    ../../libraries/base/tests  exceptionsrun001 [bad exit code] (hpc)
    concurrent/should_run       T3279 [bad exit code]
 (hpc,optasm,threaded2,dyn)
    concurrent/should_run       conc012 [bad exit code]
 (hpc,optasm,threaded2,dyn)
    concurrent/should_run       conc014 [bad stdout]
 (hpc,optasm,threaded2,dyn)
    dependent/should_compile    dynamic-paper [exit code non-0]
 (hpc,optasm)
    parser/should_compile       VtaParse [exit code non-0] (hpc)
    patsyn/should_compile       T11351 [exit code non-0] (hpc)
    polykinds                   T11248 [exit code non-0] (hpc,optasm)
    rts                         T10728 [bad stdout] (threaded2)
    rts                         T10728 [bad stdout or stderr] (ghci)
    typecheck/should_compile    Vta1 [exit code non-0] (hpc)
    typecheck/should_compile    Vta2 [exit code non-0] (hpc)
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11371#comment:10>
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