#1128: The impossible happened, code commented
----------------------+-----------------------------------------------------
Reporter: humasect | Owner:
Type: bug | Status: new
Priority: lowest | Milestone: 6.6.1
Component: Compiler | Version: 6.6
Severity: major | Resolution:
Keywords: | Difficulty: Unknown
Testcase: | Architecture: Unknown
Os: Unknown |
----------------------+-----------------------------------------------------
Changes (by thorkilnaur):
* summary: [unreproducible] The impossible happened, code commented =>
The impossible happened, code commented
Comment:
I attach ghc_trac_1128_imp2.tar.gz (a slightly modified imp.tar.bz2) that
PPC Mac OS X 10.4 reacts to as follows:
{{{
Thorkil-Naurs-Computer:~/tn/GHC/trac/1128/base thorkilnaur$ gunzip
ghc_trac_1128_imp2.tar.gz
Thorkil-Naurs-Computer:~/tn/GHC/trac/1128/base thorkilnaur$ mkdir verify
Thorkil-Naurs-Computer:~/tn/GHC/trac/1128/base thorkilnaur$ cd verify
Thorkil-Naurs-Computer:~/tn/GHC/trac/1128/base/verify thorkilnaur$ tar xvf
../ghc_trac_1128_imp2.tar
ghc_trac_1128_imp2/
ghc_trac_1128_imp2/cbits.c
ghc_trac_1128_imp2/Level.hs
ghc_trac_1128_imp2/Math.hs
ghc_trac_1128_imp2/ODE.hs
Thorkil-Naurs-Computer:~/tn/GHC/trac/1128/base/verify thorkilnaur$ diff
../imp/ ghc_trac_1128_imp2/
diff ../imp/Level.hs ghc_trac_1128_imp2/Level.hs
28a29,30
> initializeWorld :: WorldID->IO (),
>
45d46
< {-
53d53
< -}
Thorkil-Naurs-Computer:~/tn/GHC/trac/1128/base/verify thorkilnaur$ cd
ghc_trac_1128_imp2
Thorkil-Naurs-Computer:~/tn/GHC/trac/1128/base/verify/ghc_trac_1128_imp2
thorkilnaur$ ghc --make -fno-implicit-prelude Level.hs
[1 of 3] Compiling ODE ( ODE.hs, ODE.o )
[2 of 3] Compiling Math ( Math.hs, Math.o )
[3 of 3] Compiling Level ( Level.hs, Level.o )
ghc-6.7.20070209: panic! (the 'impossible' happened)
(GHC version 6.7.20070209 for powerpc-apple-darwin):
lookupDeprec base:GHC.Real.fromRational{v 01G}
Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug
Thorkil-Naurs-Computer:~/tn/GHC/trac/1128/base/verify/ghc_trac_1128_imp2
thorkilnaur$
}}}
This happens every time I try. So I have taken the liberty of removing the
[unreproducible]-part of the summary.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1128>
GHC <http://www.haskell.org/ghc/>
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