[GHC] #11331: panic! TEST=tc198: lookupVers2 GHC.Stack.Types CallStack

[GHC]

#11331: panic! TEST=tc198: lookupVers2 GHC.Stack.Types CallStack
-------------------------------------+-------------------------------------
           Reporter:  thomie         |             Owner:
               Type:  bug            |            Status:  new
           Priority:  highest        |         Milestone:  8.0.1
          Component:  Compiler       |           Version:  7.11
           Keywords:                 |  Operating System:  Unknown/Multiple
       Architecture:                 |   Type of failure:  None/Unknown
  Unknown/Multiple                   |
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
-------------------------------------+-------------------------------------
 {{{
 $ ghc-head --info | grep Project
   [("Project name","The Glorious Glasgow Haskell Compilation System")
   ,("Project version","8.1.20151231")
   ,("Project Git commit id","8afeaad919dc67643b4eff14efafb48b59039b2b")
 }}}


 {{{
 $ make slowtest TEST=tc198 TEST_HC=ghc-head VERBOSE=2
 =====> tc198(normal) 1 of 1 [0, 0, 0]
 =====> tc198(hpc) 1 of 1 [0, 0, 0]
 Compile failed (status 256) errors were:
 ghc: panic! (the 'impossible' happened)
   (GHC version 8.1.20151231 for x86_64-unknown-linux):
         lookupVers2 GHC.Stack.Types CallStack

 Please report this as a GHC bug:  http://www.haskell.org/ghc/reportabug


 *** unexpected failure for tc198(hpc)
 =====> tc198(optasm) 1 of 1 [0, 1, 0]
 Compile failed (status 256) errors were:
 ghc: panic! (the 'impossible' happened)
   (GHC version 8.1.20151231 for x86_64-unknown-linux):
         lookupVers2 GHC.Stack.Types CallStack

 Please report this as a GHC bug:  http://www.haskell.org/ghc/reportabug


 *** unexpected failure for tc198(optasm)

 Unexpected results from:
 TEST="tc198"
 }}}

 Test was added in 2005. Seems like a release blocker.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11331>
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