#4392: tcrun020 failure
----------------------------------------+-----------------------------------
    Reporter:  simonmar                 |        Owner:              
        Type:  bug                      |       Status:  new         
    Priority:  highest                  |    Milestone:  7.0.1       
   Component:  Compiler (Type checker)  |      Version:  6.12.3      
    Keywords:                           |     Testcase:              
   Blockedby:                           |   Difficulty:              
          Os:  Unknown/Multiple         |     Blocking:              
Architecture:  Unknown/Multiple         |      Failure:  None/Unknown
----------------------------------------+-----------------------------------
 {{{
 tcrun020 is currently failing all ways:

 =====> tcrun020(normal) 1947 of 2622 [0, 12, 0]
 cd ./typecheck/should_run && '/64playpen/simonmar/nightly/HEAD-
 cam-04-unx/x86_64-unknown-linux/inplace/bin/ghc-stage2' -fforce-recomp
 -dcore-lint -dcmm-lint -dno-debug-output -no-user-package-conf -rtsopts
 -o tcrun020 tcrun020.hs    >tcrun020.comp.stderr 2>&1
 Compile failed (status 256) errors were:
 [1 of 1] Compiling Main             ( tcrun020.hs, tcrun020.o )

 tcrun020.hs:15:21:
     Illegal instance declaration for `C1 m Bool'
       (All instance types must be of the form (T a1 ... an)
        where a1 ... an are type *variables*,
        and each type variable appears at most once in the instance head.
        Use -XFlexibleInstances if you want to disable this.)
     In the instance declaration for `C1 m Bool'

 *** unexpected failure for tcrun020(normal)
 }}}

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4392>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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