[GHC] #1806: panic when pattern matching infix constructors with too many arguments

[GHC]

#1806: panic when pattern matching infix constructors with too many arguments
-----------------------+----------------------------------------------------
  Reporter:  guest     |          Owner:                                 
      Type:  bug       |         Status:  new                            
  Priority:  normal    |      Milestone:                                 
 Component:  Compiler  |        Version:  6.8                            
  Severity:  minor     |       Keywords:  panic infix constructor pattern
Difficulty:  Unknown   |             Os:  Unknown                        
  Testcase:            |   Architecture:  Unknown                        
-----------------------+----------------------------------------------------
 When compiling the following incorrect code
 {{{
 data Foo = (:::)
 --data Foo = (:::) ()

 foo (_ ::: _) = ()
 }}}
 both 6.8.0.20071025 and 6.9.20071025 panic:
 {{{
 ghc-6.8.0.20071025: panic! (the 'impossible' happened)
   (GHC version 6.8.0.20071025 for i386-unknown-linux):
     tcConArgs main:Test.:::{d r5E}

 ghc-6.9.20071025: panic! (the 'impossible' happened)
   (GHC version 6.9.20071025 for i386-unknown-linux):
     tcConArgs main:Test.:::{d r5A}
 }}}

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1806>
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