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$ 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=dynamic-paper VERBOSE=2 TEST_HC=ghc-head
...
=====> dynamic-paper(normal) 1 of 1 [0, 0, 0] 
=====> dynamic-paper(hpc) 1 of 1 [0, 0, 0]

...

Compile failed (status 256) errors were:
 *** Core Lint errors : in result of Float out(FOS {Lam = Just 0,
                                                    Consts = True,
                                                    OverSatApps = True}) ***
 <no location info>: warning:
     In a case alternative: (TypeRepX k_s7Ec :: *,
                                      a_s7Ed :: k_a5px,
                                      tr2_s7Ee :: TypeRep a_s7Ed)
     @ k_a5px is out of scope
*** Offending Program ***

...

<no location info>: error: 
Compilation had errors



*** unexpected failure for dynamic-paper(hpc)
=====> dynamic-paper(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):
	Simplifier ticks exhausted
  When trying UnfoldingDone delta1
  To increase the limit, use -fsimpl-tick-factor=N (default 100)
  If you need to do this, let GHC HQ know, and what factor you needed
  To see detailed counts use -ddump-simpl-stats
  Total ticks: 203160

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


*** unexpected failure for dynamic-paper(optasm)

Unexpected results from:
TEST="dynamic-paper"

This test was added in commit 52da6bdc:

Author: Richard Eisenberg <eir@cis.upenn.edu>
Date:   Sat Dec 26 09:11:33 2015 -0500

    Have mkCastTy look more closely for reflexivity.
    
    This may have performance implications.

Trac metadata

Trac field	Value
Version	7.11
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	Compiler
Test case
Differential revisions
BlockedBy
Related
Blocking
CC	goldfire
Operating system
Architecture