From: simonpj <unknown>
Date: Mon, 20 Oct 2003 14:04:07 +0000 (+0000)
Subject: [project @ 2003-10-20 14:04:07 by simonpj]
X-Git-Tag: Approx_11550_changesets_converted~355
X-Git-Url: http://git.megacz.com/?a=commitdiff_plain;h=091dcbb00185014e04597eacd28e7a4852e7acf4;p=ghc-hetmet.git

[project @ 2003-10-20 14:04:07 by simonpj]
Wibble to the last commit; report derived warnings with -dppr-debug
---

diff --git a/ghc/compiler/typecheck/TcRnMonad.lhs b/ghc/compiler/typecheck/TcRnMonad.lhs
index c30ead5..dc0e8f0 100644
--- a/ghc/compiler/typecheck/TcRnMonad.lhs
+++ b/ghc/compiler/typecheck/TcRnMonad.lhs
@@ -410,6 +410,8 @@ discardWarnings :: TcRn a -> TcRn a
 -- With -dppr-debug, the effects is switched off, so you can still see
 -- what warnings derived code would give
 discardWarnings thing_inside
+  | opt_PprStyle_Debug = thing_inside
+  | otherwise
   = do	{ errs_var <- newMutVar emptyMessages
 	; result <- setErrsVar errs_var thing_inside
 	; (_warns, errs) <- readMutVar errs_var