[GHC] #1715: seldom panic

[GHC]

#1715: seldom panic
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    Reporter:  g9ks157k at acme.softbase.org  |        Owner:         
        Type:  bug                         |       Status:  new    
    Priority:  normal                      |    Milestone:         
   Component:  Compiler                    |      Version:  6.8    
    Severity:  critical                    |   Resolution:         
    Keywords:                              |   Difficulty:  Unknown
          Os:  Linux                       |     Testcase:         
Architecture:  x86                         |  
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Comment (by g9ks157k at acme.softbase.org):

 Meanwhile, I found out that the missing second line isn’t the actual
 cause of the bug.

 You can do the first build on the original version or on the version with
 the second line deleted–compiling of {{{Window.hs}}} will always
 succeed.  (If you compile with the second line deleted, you will get
 errors when compiling {{{OrdinaryWindows.hs}}}, but that’s normal.)
 After the first build, you just have to trigger the recompilation of
 {{{Window.hs}}} to see the bug in action—you don’t have to change
 anything, doing a {{{touch
 Haskell/Graphics/UI/Grapefruit/Adapters/Gtk2Hs/Window.hs}}} is enough.

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1715>
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