#2864: ghc: panic! (the 'impossible' happened) -- Please report this as a GHC
bug
----------------------+-----------------------------------------------------
Reporter: megacz | Owner:
Type: bug | Status: new
Priority: normal | Milestone:
Component: Compiler | Version: 6.11
Severity: major | Resolution:
Keywords: | Testcase:
Os: MacOS X | Architecture: x86
----------------------+-----------------------------------------------------
Comment (by megacz):
FWIW, this happens on x86-linux as well:
/afs/megacz.com/work/ghc/ghc/stage1-inplace/ghc -DGHCI_TABLES_NEXT_TO_CODE
-DSTAGE=2 -package-name ghc-6.11.20081208 -hide-all-packages -no-user-
package-conf -i -idist-stage2/build -inativeGen -ibasicTypes -icmm
-icodeGen -icoreSyn -icprAnalysis -ideSugar -ighci -ihsSyn -iiface -imain
-iparser -iprelude -iprofiling -irename -isimplCore -isimplStg
-ispecialise -istgSyn -istranal -itypecheck -itypes -iutils -ivectorise
-idist-stage2/build/autogen -Idist-stage2/build/autogen -Idist-
stage2/build -I../libffi/build/include -Istage2plus
-I../libraries/base/cbits -I../libraries/base/include -I. -Iparser -Iutils
-optP-DGHCI -optP-include -optPdist-stage2/build/autogen/cabal_macros.h
-odir dist-stage2/build -hidir dist-stage2/build -stubdir dist-
stage2/build -package Cabal-1.5.5 -package array-0.2.0.0 -package
base-4.0.0.0 -package bytestring-0.9.1.4 -package containers-0.2.0.0
-package directory-1.0.0.2 -package filepath-1.1.0.1 -package
haskell98-1.0.1.0 -package hpc-0.5.0.2 -package old-time-1.0.0.1 -package
process-1.0.1.1 -package template-haskell-2.3.0.0 -package unix-2.3.1.0 -O
-Wall -fno-warn-name-shadowing -fno-warn-orphans -XCPP -XMagicHash
-XUnboxedTuples -XPatternGuards -XForeignFunctionInterface
-XEmptyDataDecls -XTypeSynonymInstances -XMultiParamTypeClasses
-XFlexibleInstances -XRank2Types -XScopedTypeVariables
-XDeriveDataTypeable -prof -hisuf p_hi -hcsuf p_hc -osuf p_o -idist-
stage2/build -H32m -O -Rghc-timing -O2 -c nativeGen/MachRegs.lhs -o
dist-stage2/build/MachRegs.p_o -ohi dist-stage2/build/MachRegs.p_hi
ghc: panic! (the 'impossible' happened)
(GHC version 6.11.20081208 for i386-unknown-linux):
CoreToStg.myCollectArgs
(__scc {trivColorable ghc-6.11.20081208:MachRegs !}
ghc-6.11.20081208:MachRegs.isSqueesed{v r2zH} [gid] 0 0)
eta_s2Gv{v} [lid]
Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug
<<ghc: 128110484 bytes, 17 GCs, 4303530/9179136 avg/max bytes residency (3
samples), 38M in use, 0.00 INIT (0.00 elapsed), 0.37 MUT (0.48 elapsed),
0.16 GC (0.17 elapsed) :ghc>>
make[4]: *** [dist-stage2/build/MachRegs.p_o] Error 1
make[3]: *** [all] Error 1
make[3]: Leaving directory `/afs/megacz.com/work/ghc/compiler'
make[2]: *** [build.stage.2] Error 2
make[2]: Leaving directory `/afs/megacz.com/work/ghc/compiler'
make[1]: *** [stage2] Error 2
make[1]: Leaving directory `/afs/megacz.com/work/ghc'
make: *** [bootstrap2] Error 2
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/2864#comment:1>
GHC <http://www.haskell.org/ghc/>
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