needless panic in :show modules

after a failed :load, :show modules panics (same effect in 6.6.1):

$ /cygdrive/c/fptools/ghc/compiler/stage2/ghc-inplace --interactive
GHCi, version 6.9.20070917: http://www.haskell.org/ghc/  :? for help
Loading package base ... linking ... done.
Prelude> :show modules
Prelude> :l x
[1 of 1] Compiling Main             ( x.hs, interpreted )

x.hs:3:9:
    lexical error in string/character literal at character '\r'
Failed, modules loaded: none.
Prelude> :show modules
: panic! (the 'impossible' happened)
  (GHC version 6.9.20070917 for i386-unknown-mingw32):
        missing linkable

Please report this as a GHC bug:  http://www.haskell.org/ghc/reportabug

Trac metadata

Trac field	Value
Version	6.6.1
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	GHCi
Test case
Differential revisions
BlockedBy
Related
Blocking
CC
Operating system	Unknown
Architecture	Unknown