[ ghc-Bugs-1370875 ] panic! impossible happened: ds_app_type

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Bugs item #1370875, was opened at 2005-12-01 13:37
Message generated for change (Comment added) made by simonpj
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Category: Compiler
Group: None
>Status: Closed
>Resolution: Fixed
Priority: 5
Submitted By: Jose Emilio Labra Gayo (labra)
Assigned to: Nobody/Anonymous (nobody)
Summary: panic! impossible happened: ds_app_type

Initial Comment:
When I try to compile:

class G a where
 f  :: G a

I obtain: 

ghc.exe: panic! (the `impossible' happened, GHC version
6.4): ds_app_type Prueba.G{tc r1Yg} [a{tv a1Yq}]



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>Comment By: Simon Peyton Jones (simonpj)
Date: 2005-12-01 15:45

Message:
Logged In: YES 
user_id=50165

Fixed some time ago; upgrade to 6.4.1.

Simon

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