#2033: GHC-6.9 panics rather than parse error, related to view patterns.
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Reporter: apeacock | Owner:
Type: bug | Status: new
Priority: normal | Milestone:
Component: Compiler | Version: 6.9
Severity: normal | Resolution:
Keywords: | Difficulty: Unknown
Testcase: | Architecture: x86
Os: Windows |
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Comment (by apeacock):
Sorry, hit submit rather than preview, here is the code again:
{{{
main = do
wrapper (_ -> putStrLn "_")
wrapper :: (String -> IO ()) -> IO ()
wrapper f = f ""
}}}
Output
{{{
[1 of 1] Compiling Main ( Test.hs, interpreted )
: panic! (the 'impossible' happened)
(GHC version 6.9.20071111 for i386-unknown-mingw32):
rnExpr: unexpected expression: panic! (the 'impossible' happened)
(GHC version 6.9.20071111 for i386-unknown-mingw32):
hsSyn/HsExpr.lhs:(320,0)-(467,72): Non-exhaustive patterns in
functi
pr_expr
}}}
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/2033#comment:1>
GHC <http://www.haskell.org/ghc/>
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