#5637: runhaskell ghc panic running netwire 2 demo
--------------------------------+-------------------------------------------
Reporter: gareth.rowlands | Owner:
Type: bug | Status: new
Priority: normal | Component: Compiler
Version: 7.0.3 | Keywords:
Testcase: | Blockedby:
Os: Windows | Blocking:
Architecture: x86 | Failure: None/Unknown
--------------------------------+-------------------------------------------
Running the netwire 2 demo at the URL below with runhaskell gives a ghc
panic.
Steps to reproduce:
1> cabal update; cabal install netwire-2.0.1
...
2> get http://hpaste.org/54025 into demo.hs
3> runhaskell .\demo.hs
ghc: panic! (the 'impossible' happened)
(GHC version 7.0.3 for i386-unknown-mingw32):
addTickHsExpr
(|/\(@ a{tv a1hy} [sk]).
(netwire-2.0.1:Control.Wire.Trans.Sample.sample{v reZ} [gid])
@ a{tv a1hy} [sk]
@ ghc-prim:GHC.Types.Double{(w) tc 3u}
@ ghc-prim:GHC.Unit.(){(w) tc 40}
@ ghc-prim:GHC.Types.Double{(w) tc 3u}
@ (base:Control.Arrow.Kleisli{tc rcq}
<nt>ghc-prim:GHC.Types.IO{tc 32I})
$dArrowChoice{v a1l8} [lid]
$dArrowClock{v a1l9} [lid]
$dNum{v a1la} [lid]
$dOrd{v a1lb} [lid]
co{tv a1lc} [co]
(((netwire-2.0.1:Control.Wire.Prefab.Random.noise{v rey} [gid])
@ (base:Control.Arrow.Kleisli{tc rcq}
<nt>ghc-prim:GHC.Types.IO{tc 32I})
@ ghc-prim:GHC.Types.Double{(w) tc 3u}
@ ghc-prim:GHC.Unit.(){(w) tc 40}
@ ghc-prim:GHC.Unit.(){(w) tc 40}
$dArrowRandom{v a1or} [lid]
$dRandom{v a1os} [lid] -< ghc-prim:GHC.Unit.(){(w) v 71}
[gid[DataCon]]))|)
In contrast, compiling normally and running works fine:
ghc --make demo.hs; .\demo
24> ghc --version
The Glorious Glasgow Haskell Compilation System, version 7.0.3
OS: Windows 7 x64 SP1
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5637>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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