Add -fwarn-monomorphism-restriction (on by default) to warn when the MR is used

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

diff --git a/compiler/typecheck/TcRnMonad.lhs b/compiler/typecheck/TcRnMonad.lhs
index 56f073f..e2cbc22 100644 (file)
--- a/compiler/typecheck/TcRnMonad.lhs
+++ b/compiler/typecheck/TcRnMonad.lhs
@@ -14,14 +14,6 @@ module TcRnMonad(
 import TcRnTypes       -- Re-export all
 import IOEnv           -- Re-export all
 
-#if defined(GHCI)
-import TypeRep
-import IdInfo
-import TysWiredIn
-import PrelNames
-import {-#SOURCE#-} TcEnv
-#endif
-
 import HsSyn hiding (LIE)
 import HscTypes
 import Module
@@ -733,11 +725,14 @@ checkTc False err = failWithTc err
 
 \begin{code}
 addWarnTc :: Message -> TcM ()
-addWarnTc msg
+addWarnTc msg = do { env0 <- tcInitTidyEnv 
+                  ; addWarnTcM (env0, msg) }
+
+addWarnTcM :: (TidyEnv, Message) -> TcM ()
+addWarnTcM (env0, msg)
  = do { ctxt <- getErrCtxt ;
-       env0 <- tcInitTidyEnv ;
        ctxt_msgs <- do_ctxt env0 ctxt ;
-       addWarn (vcat (msg : ctxt_to_use ctxt_msgs)) }
+       addReport (vcat (ptext SLIT("Warning:") <+> msg : ctxt_to_use ctxt_msgs)) }
 
 warnTc :: Bool -> Message -> TcM ()
 warnTc warn_if_true warn_msg