Panic on generating Core code

STEPS TO REPRODUCE

Create the file "Panic.hs" with the contents:

module Main where
main = print 1

Compile with "ghc -fext-core Panic.hs"

EXPECTED BEHAVIOR

Generation of the Core file "Panic.hcr".

ACTUAL BEHAVIOR

$ ghc -fext-core Panic.hs
[1 of 1] Compiling Main             ( Panic.hs, Panic.o )
ghc: panic! (the 'impossible' happened)
  (GHC version 7.4.1 for x86_64-unknown-linux):
	MkExternalCore died: make_lit

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

$

As it states, I am using GHC version 7.4.1 for x86_64 Linux, on an x86-64 Linux box running Ubuntu 11.10 an Linux kernel 3.0.0-14-generic.

Trac metadata

Trac field	Value
Version	7.4.1
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	Compiler
Test case
Differential revisions
BlockedBy
Related
Blocking
CC
Operating system	Linux
Architecture	x86_64 (amd64)

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Panic on generating Core code