#7455: ghc panic on show
-------------------------------+--------------------------------------------
Reporter: fegu | Owner:
Type: bug | Status: new
Priority: normal | Component: Compiler
Version: 7.4.1 | Keywords: panic show Show
Os: Windows | Architecture: x86
Failure: Compile-time crash | Blockedby:
Blocking: | Related:
-------------------------------+--------------------------------------------
--- ghccrash.hs
main = do
putStrLn "Minimal compiler bug example"
data VariationInfo = Variation{
somefield :: Bool
} deriving (show) -- set small s in show to crash ghc 7.4.1
--- OUTPUT:
D:\Prosjekt.FE\Haskell>ghc ghccrash.hs
[1 of 1] Compiling Main ( ghccrash.hs, ghccrash.o )
ghc: panic! (the 'impossible' happened)
(GHC version 7.4.1 for i386-unknown-mingw32):
nameModule show{tv a9M}
Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7455>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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