#1128: The impossible happened, code commented
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Reporter: humasect | Owner:
Type: bug | Status: new
Priority: normal | Milestone: 6.6.1
Component: Compiler | Version: 6.6
Severity: major | Resolution:
Keywords: | Difficulty: Unknown
Testcase: | Architecture: Unknown
Os: Unknown |
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Comment (by humasect):
More clues found during investigation (use ODE library if needed):
foreign import ccall unsafe "dWorldSetContactSurfaceLayer"
worldSetContactSurfaceLayer ::
WorldID -> Real -> IO ()
type WorldID = Int
type Real = Double
initializeWorld = (\w -> do
--worldSetGravity w 0 (-1.0) 0
--worldSetERP w 0.2
--worldSetCFM w 1e-5
--worldSetContactMaxCorrectingVel w 0.9
worldSetContactSurfaceLayer w 0.001
), --worldSetAutoDisableFlag w 1),
--- now here is the:
--
ghc-6.6: panic! (the 'impossible' happened)
(GHC version 6.6 for i386-apple-darwin):
lookupDeprec base:GHC.Real.fromRational{v 01G}
-- Then change worldSetContactSurfaceLayer's second argument to 1.0 ....
bug disappears.
I hope this helps
--
Ticket URL: <http://cvs.haskell.org/trac/ghc/ticket/1128>
GHC <http://www.haskell.org/ghc/>
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