From 091dcbb00185014e04597eacd28e7a4852e7acf4 Mon Sep 17 00:00:00 2001
From: simonpj <unknown>
Date: Mon, 20 Oct 2003 14:04:07 +0000
Subject: [PATCH] [project @ 2003-10-20 14:04:07 by simonpj] Wibble to the
 last commit; report derived warnings with -dppr-debug

---
 ghc/compiler/typecheck/TcRnMonad.lhs |    2 ++
 1 file changed, 2 insertions(+)

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
-- 
1.7.10.4