X-Git-Url: http://git.megacz.com/?p=ghc-hetmet.git;a=blobdiff_plain;f=compiler%2Ftypecheck%2FTcTyDecls.lhs;h=956f944dfcb673e17e933c3fa8e072710c3ac2c2;hp=04602ac09b55fe4f3bf15328e5c441d051d3e687;hb=467f588c25e6d7825a11eff018a67727b3dea71b;hpb=49c98d143c382a1341e1046f5ca00819a25691ba

diff --git a/compiler/typecheck/TcTyDecls.lhs b/compiler/typecheck/TcTyDecls.lhs
index 04602ac..956f944 100644
--- a/compiler/typecheck/TcTyDecls.lhs
+++ b/compiler/typecheck/TcTyDecls.lhs
@@ -8,8 +8,14 @@ Analysis functions over data types.  Specficially, detecting recursive types.
 This stuff is only used for source-code decls; it's recorded in interface
 files for imported data types.
 
-
 \begin{code}
+{-# OPTIONS -w #-}
+-- The above warning supression flag is a temporary kludge.
+-- While working on this module you are encouraged to remove it and fix
+-- any warnings in the module. See
+--     http://hackage.haskell.org/trac/ghc/wiki/Commentary/CodingStyle#Warnings
+-- for details
+
 module TcTyDecls(
 	calcRecFlags, 
 	calcClassCycles, calcSynCycles
@@ -25,8 +31,6 @@ import HscTypes
 import TyCon
 import Class
 import DataCon
-import Var
-import VarSet
 import Name
 import NameEnv
 import NameSet
@@ -95,7 +99,6 @@ synTyConsOfType ty
      go (FunTy a b)	  	  = go a `plusNameEnv` go b
      go (PredTy (IParam _ ty))    = go ty	
      go (PredTy (ClassP cls tys)) = go_s tys	-- Ignore class
-     go (NoteTy _ ty)		  = go ty	
      go (ForAllTy _ ty)	  	  = go ty
 
      go_tc tc tys | isSynTyCon tc = extendNameEnv (go_s tys) (tyConName tc) tc
@@ -281,6 +284,7 @@ new_tc_rhs tc = snd (newTyConRhs tc)	-- Ignore the type variables
 
 getTyCon (ATyCon tc) = tc
 getTyCon (AClass cl) = classTyCon cl
+getTyCon other       = panic "getTyCon"
 
 findLoopBreakers :: [(TyCon, [TyCon])] -> [Name]
 -- Finds a set of tycons that cut all loops
@@ -313,6 +317,7 @@ tcTyConsOfType ty
      go (PredTy (IParam _ ty))     = go ty
      go (PredTy (ClassP cls tys))  = go_tc (classTyCon cls) tys
      go (ForAllTy _ ty)	  	   = go ty
+     go other			   = panic "tcTyConsOfType"
 
      go_tc tc tys = extendNameEnv (go_s tys) (tyConName tc) tc
      go_s tys = foldr (plusNameEnv . go) emptyNameEnv tys