[GHC] #5045: "panic! (the 'impossible' happened)" compiling code using arrows and elimReader (test case included)

[GHC]

#5045: "panic! (the 'impossible' happened)" compiling code using arrows and
elimReader (test case included)
---------------------------------+------------------------------------------
  Reporter:  josh                |          Owner:  simonpj       
      Type:  bug                 |         Status:  closed        
  Priority:  high                |      Milestone:  7.2.1         
 Component:  Compiler            |        Version:  7.0.2         
Resolution:  fixed               |       Keywords:                
  Testcase:  ghci/scripts/T5045  |      Blockedby:                
Difficulty:                      |             Os:  Linux         
  Blocking:                      |   Architecture:  x86_64 (amd64)
   Failure:  None/Unknown        |  
---------------------------------+------------------------------------------

Comment(by ross@…):

 commit 10801b5568a8777dca5e42cca0b9cf5520d36763
 Author: Ross Paterson <ross at soi.city.ac.uk>
 Date:   Wed Jun 29 18:50:48 2011 +0100

     Fix #5045 properly

     In arrow commands, the function position in an application (HsApp)
     is a command, not an expression.

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5045#comment:7>
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