X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=compiler%2Fmain%2FErrUtils.lhs;h=fdabacf5712c22ab0b289c1c70a0dda871b31546;hb=c3693c2d32ffb9d312a598a65cbc62f3c3270008;hp=455b3bfe37a3fe78f6468e58906c9aa4a8f2e5cd;hpb=c1efc06cb56bc4359622918c5354b5730ea37724;p=ghc-hetmet.git

diff --git a/compiler/main/ErrUtils.lhs b/compiler/main/ErrUtils.lhs
index 455b3bf..fdabacf 100644
--- a/compiler/main/ErrUtils.lhs
+++ b/compiler/main/ErrUtils.lhs
@@ -13,6 +13,7 @@ module ErrUtils (
 	Messages, errorsFound, emptyMessages,
 	mkErrMsg, mkWarnMsg, mkPlainErrMsg, mkLongErrMsg,
 	printErrorsAndWarnings, printBagOfErrors, printBagOfWarnings,
+    handleFlagWarnings,
 
 	ghcExit,
 	doIfSet, doIfSet_dyn, 
@@ -28,8 +29,6 @@ module ErrUtils (
 	debugTraceMsg,	
     ) where
 
--- XXX This define is a bit of a hack, and should be done more nicely
-#define FAST_STRING_NOT_NEEDED 1
 #include "HsVersions.h"
 
 import Bag		( Bag, bagToList, isEmptyBag, emptyBag )
@@ -176,7 +175,21 @@ printBagOfWarnings dflags bag_of_warns
 		EQ -> True
 		GT -> False
 
-
+handleFlagWarnings :: DynFlags -> [String] -> IO ()
+handleFlagWarnings dflags warns
+ = when (dopt Opt_WarnDeprecatedFlags dflags)
+        (handleFlagWarnings' dflags warns)
+
+handleFlagWarnings' :: DynFlags -> [String] -> IO ()
+handleFlagWarnings' _ [] = return ()
+handleFlagWarnings' dflags warns
+ = do -- It would be nicer if warns :: [Message], but that has circular
+      -- import problems.
+      let warns' = map text warns
+      mapM_ (log_action dflags SevWarning noSrcSpan defaultUserStyle) warns'
+      when (dopt Opt_WarnIsError dflags) $
+          do errorMsg dflags $ text "\nFailing due to -Werror.\n"
+             exitWith (ExitFailure 1)
 
 ghcExit :: DynFlags -> Int -> IO ()
 ghcExit dflags val