Add {-# OPTIONS_GHC -w #-} and some blurb to all compiler modules

[ghc-hetmet.git] / compiler / typecheck / TcGenDeriv.lhs

diff --git a/compiler/typecheck/TcGenDeriv.lhs b/compiler/typecheck/TcGenDeriv.lhs
index 26cec8b..ea5ca8e 100644 (file)
--- a/compiler/typecheck/TcGenDeriv.lhs
+++ b/compiler/typecheck/TcGenDeriv.lhs
@@ -11,6 +11,13 @@ This module is nominally ``subordinate'' to @TcDeriv@, which is the
 This is where we do all the grimy bindings' generation.
 
 \begin{code}
+{-# OPTIONS_GHC -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/WorkingConventions#Warnings
+-- for details
+
 module TcGenDeriv (
        gen_Bounded_binds,
        gen_Enum_binds,
@@ -47,7 +54,6 @@ import TcType
 import TysPrim
 import TysWiredIn
 import Util
-import Constants
 import Outputable
 import FastString
 import OccName
@@ -1208,12 +1214,13 @@ gen_tag_n_con_monobind (rdr_name, tycon, GenCon2Tag)
                                              (nlHsApp (nlHsVar getTag_RDR) a_Expr)))
                        (noLoc (mkExplicitHsForAllTy (map (noLoc.UserTyVar) tvs) (noLoc []) con2tag_ty))
 
-    con2tag_ty = foldl nlHsAppTy (nlHsTyVar (getRdrName tycon)) 
-                      (map nlHsTyVar tvs)
+    con2tag_ty = nlHsTyConApp (getRdrName tycon) (map nlHsTyVar tvs)
                `nlHsFunTy` 
                nlHsTyVar (getRdrName intPrimTyCon)
 
-    lots_of_constructors = tyConFamilySize tycon > mAX_FAMILY_SIZE_FOR_VEC_RETURNS
+    lots_of_constructors = tyConFamilySize tycon > 8
+                                -- was: mAX_FAMILY_SIZE_FOR_VEC_RETURNS
+                                -- but we don't do vectored returns any more.
 
     mk_stuff :: DataCon -> ([LPat RdrName], LHsExpr RdrName)
     mk_stuff con = ([nlWildConPat con], 
@@ -1421,10 +1428,6 @@ genOpApp e1 op e2 = nlHsPar (nlHsOpApp e1 op e2)
 \end{code}
 
 \begin{code}
-getSrcSpan = srcLocSpan . getSrcLoc
-\end{code}
-
-\begin{code}
 a_RDR          = mkVarUnqual FSLIT("a")
 b_RDR          = mkVarUnqual FSLIT("b")
 c_RDR          = mkVarUnqual FSLIT("c")