Omitted # after LANGUAGE pragma causes panic

If the # in the closing #-} after a LANGUAGE pragma is omitted, GHC panics. For example, creating a file containing the single line:

{-# LANGUAGE TypeFamilies -}

and passing it to GHC or GHCi produces:

ghc: panic! (the 'impossible' happened)
  (GHC version 6.10.3 for i386-unknown-linux):
	getOptions'.parseLanguage(1) went past eof token

Trac metadata

Trac field	Value
Version	6.10.3
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	Compiler
Test case
Differential revisions
BlockedBy
Related
Blocking
CC
Operating system
Architecture