#5684: ghc: panic! (the 'impossible' happened) (ghc 7.2.2)
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Reporter: selinger | Owner:
Type: bug | Status: new
Priority: normal | Component: Compiler
Version: 7.2.1 | Keywords:
Os: Unknown/Multiple | Architecture: Unknown/Multiple
Failure: Compile-time crash | Testcase:
Blockedby: | Blocking:
Related: |
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Changes (by dimitris):
* cc: dimitris@… (added)
Comment:
OK in HEAD it seems the panic has gone but the file has type errors. Is
the following what you
expected?:
/home/dimitris/extra-investigations/Bug.hs:49:22:
Couldn't match type `[]' with `(->) Int'
When using functional dependencies to combine
Myclass [a] [qa] [ca],
arising from the dependency `a -> qa'
in the instance declaration at /home/dimitris/extra-
investigations/Bug.hs:16:10
Myclass [Bool] (Int -> Int) cb,
arising from a use of `fun1'
at /home/dimitris/extra-investigations/Bug.hs:49:22-25
In the expression: fun1 (fun8 5) (a, b, False)
In a pattern binding: (a', b', m') = fun1 (fun8 5) (a, b, False)
dimitris@cam-04-unx:/64playpen/dimitris/GHC-HEAD/ghc$
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5684#comment:2>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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