#2878: panic while compiling Cabal-1.6.0.1
-------------------------------+--------------------------------------------
Reporter: dvogel | Owner:
Type: bug | Status: new
Priority: normal | Milestone:
Component: Compiler | Version: 6.8.3
Severity: major | Resolution:
Keywords: | Difficulty: Unknown
Testcase: | Os: Unknown/Multiple
Architecture: x86_64 (amd64) |
-------------------------------+--------------------------------------------
Changes (by simonpj):
* difficulty: => Unknown
Old description:
> While compiling Cabal-1.6.0.1, as packaged with Cabal-0.6.0, I got:
>
> [16 of 50] Compiling Distribution.Simple.Utils (
> Distribution/Simple/Utils.hs, dist/build/Distribution/Simple/Utils.o )
> ghc-6.8.2: panic! (the 'impossible' happened)
> (GHC version 6.8.2 for x86_64-unknown-linux):
> applyTypeToArgs
> unix-2.3.0.0:System.Posix.Signals.a38{v rov8} [gid]
> (unix-2.3.0.0:System.Posix.Signals.a5{v rov7} [gid]
> `cast` (base:GHC.Prim.sym{(w) tc 34v}
> (base:Foreign.C.Types.:CoCInt{tc r1dN})
> :: <pred>base:GHC.Int.Int32{tc 3V}
> ~
> <nt>base:Foreign.C.Types.CInt{tc r17X}))
> unix-2.3.0.0:System.Posix.Signals.Ignore{v rov6} [gid]
> (base:Data.Maybe.Nothing{v r6E} [gid]
> @ <nt>unix-2.3.0.0:System.Posix.Signals.SignalSet{tc rov5})
> eta{v apCg} [lid]
> (# base:GHC.Prim.State#{(w) tc 32q}
> base:GHC.Prim.RealWorld{(w) tc 31E},
> <nt>unix-2.3.0.0:System.Posix.Signals.SignalSet{tc rov5} #)
New description:
While compiling Cabal-1.6.0.1, as packaged with Cabal-0.6.0, I got:
{{{
[16 of 50] Compiling Distribution.Simple.Utils (
Distribution/Simple/Utils.hs, dist/build/Distribution/Simple/Utils.o )
ghc-6.8.2: panic! (the 'impossible' happened)
(GHC version 6.8.2 for x86_64-unknown-linux):
applyTypeToArgs
unix-2.3.0.0:System.Posix.Signals.a38{v rov8} [gid]
(unix-2.3.0.0:System.Posix.Signals.a5{v rov7} [gid]
`cast` (base:GHC.Prim.sym{(w) tc 34v}
(base:Foreign.C.Types.:CoCInt{tc r1dN})
:: <pred>base:GHC.Int.Int32{tc 3V}
~
<nt>base:Foreign.C.Types.CInt{tc r17X}))
unix-2.3.0.0:System.Posix.Signals.Ignore{v rov6} [gid]
(base:Data.Maybe.Nothing{v r6E} [gid]
@ <nt>unix-2.3.0.0:System.Posix.Signals.SignalSet{tc rov5})
eta{v apCg} [lid]
(# base:GHC.Prim.State#{(w) tc 32q}
base:GHC.Prim.RealWorld{(w) tc 31E},
<nt>unix-2.3.0.0:System.Posix.Signals.SignalSet{tc rov5} #)
}}}
Comment:
That's odd; we use Cabal in GHC itself, so we compile it all the time.
Does the same thing happen with GHC 6.10? You might want to remove all
`.hi` files, just in case there's some kind of out-of-date-ness fooling
the recompilation checker.
If it works in 6.10, we'll probably treat this as won't-fix because we
won't release another version of 6.8. If it fails in 6.10, please can you
describe exactly how to reproduce it? Many thanks.
Simon
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/2878#comment:2>
GHC <http://www.haskell.org/ghc/>
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