X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=compiler%2Ftypecheck%2FTcRnMonad.lhs;h=7e7f117cdf28d272ff0e4ac5916b9c4a5bf3caa3;hb=cd54b707b0d77a3c62ee9f57b82dae98727f1c34;hp=826c09b996a0385805005235c498a8cd4b89059d;hpb=3bb700d515de2405fa5db3326482e529f332d508;p=ghc-hetmet.git

diff --git a/compiler/typecheck/TcRnMonad.lhs b/compiler/typecheck/TcRnMonad.lhs
index 826c09b..7e7f117 100644
--- a/compiler/typecheck/TcRnMonad.lhs
+++ b/compiler/typecheck/TcRnMonad.lhs
@@ -406,7 +406,6 @@ traceRn, traceSplice :: SDoc -> TcRn ()
 traceRn      = traceOptTcRn Opt_D_dump_rn_trace
 traceSplice  = traceOptTcRn Opt_D_dump_splices
 
-
 traceIf, traceHiDiffs :: SDoc -> TcRnIf m n ()
 traceIf      = traceOptIf Opt_D_dump_if_trace
 traceHiDiffs = traceOptIf Opt_D_dump_hi_diffs
@@ -892,6 +891,9 @@ add_err_tcm tidy_env err_msg loc ctxt
 mkErrInfo :: TidyEnv -> [ErrCtxt] -> TcM SDoc
 -- Tidy the error info, trimming excessive contexts
 mkErrInfo env ctxts
+ | opt_PprStyle_Debug     -- In -dppr-debug style the output 
+ = return empty	          -- just becomes too voluminous
+ | otherwise
  = go 0 env ctxts
  where
    go :: Int -> TidyEnv -> [ErrCtxt] -> TcM SDoc
@@ -1147,7 +1149,7 @@ failIfM :: Message -> IfL a
 failIfM msg
   = do 	{ env <- getLclEnv
 	; let full_msg = (if_loc env <> colon) $$ nest 2 msg
-	; liftIO (printErrs (full_msg defaultErrStyle))
+	; liftIO (printErrs full_msg defaultErrStyle)
 	; failM }
 
 --------------------
@@ -1182,7 +1184,7 @@ forkM_maybe doc thing_inside
 	  	    ; return Nothing }
 	}}
   where
-    print_errs sdoc = liftIO (printErrs (sdoc defaultErrStyle))
+    print_errs sdoc = liftIO (printErrs sdoc defaultErrStyle)
 
 forkM :: SDoc -> IfL a -> IfL a
 forkM doc thing_inside