[project @ 2001-05-03 09:32:48 by simonpj]

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

diff --git a/ghc/compiler/typecheck/TcHsSyn.lhs b/ghc/compiler/typecheck/TcHsSyn.lhs
index ec0b920..21ca4be 100644 (file)
--- a/ghc/compiler/typecheck/TcHsSyn.lhs
+++ b/ghc/compiler/typecheck/TcHsSyn.lhs
@@ -28,7 +28,7 @@ module TcHsSyn (
        -- re-exported from TcEnv
        TcId, 
 
-       zonkTopBinds, zonkId, zonkIdOcc, zonkExpr,
+       zonkTopBinds, zonkId, zonkIdBndr, zonkIdOcc, zonkExpr,
        zonkForeignExports, zonkRules
   ) where
 
@@ -38,7 +38,7 @@ module TcHsSyn (
 import HsSyn   -- oodles of it
 
 -- others:
-import Id      ( idName, idType, isLocalId, setIdType, Id )
+import Id      ( idName, idType, setIdType, Id )
 import DataCon ( dataConWrapId )       
 import TcEnv   ( tcLookupGlobal_maybe, tcExtendGlobalValEnv,
                  TcEnv, TcId
@@ -167,7 +167,9 @@ zonkIdOcc id
     let
        new_id = case maybe_id' of
                    Just (AnId id') -> id'
-                   other           -> WARN( isLocalId id, ppr id ) id
+                   other           -> id -- WARN( isLocalId id, ppr id ) id
+                                       -- Oops: the warning can give a black hole
+                                       -- because it looks at the idinfo
     in
     returnNF_Tc new_id
 \end{code}
@@ -510,20 +512,11 @@ zonkStmts (ParStmtOut bndrstmtss : stmts)
     returnNF_Tc (ParStmtOut (zip new_bndrss new_stmtss) : new_stmts)
   where (bndrss, stmtss) = unzip bndrstmtss
 
-zonkStmts [ReturnStmt expr]
-  = zonkExpr expr              `thenNF_Tc` \ new_expr ->
-    returnNF_Tc [ReturnStmt new_expr]
-
 zonkStmts (ExprStmt expr locn : stmts)
   = zonkExpr expr      `thenNF_Tc` \ new_expr ->
     zonkStmts stmts    `thenNF_Tc` \ new_stmts ->
     returnNF_Tc (ExprStmt new_expr locn : new_stmts)
 
-zonkStmts (GuardStmt expr locn : stmts)
-  = zonkExpr expr      `thenNF_Tc` \ new_expr ->
-    zonkStmts stmts    `thenNF_Tc` \ new_stmts ->
-    returnNF_Tc (GuardStmt new_expr locn : new_stmts)
-
 zonkStmts (LetStmt binds : stmts)
   = zonkBinds binds            `thenNF_Tc` \ (new_binds, new_env) ->
     tcSetEnv new_env           $