SRT labelghc-6.0.1: panic

Compiling ProdArrows-0.1 with ghc 6.0.1 on a Debian
unstable/Crusoe box got the following message:
ghc -H24M -fwarn-incomplete-patterns
-fwarn-unused-imports -package data -package text
-package util -Onot -fno-warn-incomplete-patterns -cpp
-c HsParser.hs -o HsParser.o

HsParser.hs:3803:
    Warning: Pattern match(es) are overlapped
             In a case alternative: _ -> ...
ghc -H24M -fwarn-incomplete-patterns
-fwarn-unused-imports -package data -package text
-package util  -c HsPretty.hs -o HsPretty.o
ghc -H24M -fwarn-incomplete-patterns
-fwarn-unused-imports -package data -package text
-package util  -c SynOps.hs -o SynOps.o
ghc-6.0.1: panic! (the `impossible' happened, GHC
version 6.0.1):
        cgPanic
    me {- v aeB -}
    static binds for:
    local binds for:
    SynOps.deb {- v rcZ -}
    zrzr {- v r3JW -}
    elem {- v r3JY -}
    union {- v r3K0 -}
    SynOps.zdfMapExpHsExp {- v r3K2 -}
    SynOps.zdfDefinedHsMatch {- v r3K4 -}
    SynOps.zdfP2EHsPat {- v r3K6 -}
    SynOps.zdfMapExpZMZN {- v r3K8 -}
    SRT labelghc-6.0.1: panic! (the `impossible'
happened, GHC version 6.0.1):
        initC: srt

Shawn Garbett <Shawn@Garbett.org>

Trac metadata

Trac field	Value
Version	6.0.1
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	ResolvedFixed
Component	None
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