[GHC] #7882: #line with empty filename leads to crash

[GHC]

#7882: #line with empty filename leads to crash
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Reporter:  Spivey              |          Owner:          
    Type:  bug                 |         Status:  new     
Priority:  normal              |      Component:  Compiler
 Version:  7.4.2               |       Keywords:          
      Os:  Linux               |   Architecture:  x86     
 Failure:  Compile-time crash  |      Blockedby:          
Blocking:                      |        Related:          
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 It's trivial, but a directive

 #line 3 ""

 leads to a GHC crash with Prelude.head: empty list.

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7882>
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