From 2d0046795242a50d810638eafe9d4e47a4ec5cd1 Mon Sep 17 00:00:00 2001
From: Ian Lynagh <igloo@earth.li>
Date: Sun, 2 Oct 2011 20:19:47 +0100
Subject: [PATCH] Fix validate with old bootstrapping compilers

They weren't smart enough to see our GADT pattern matches are complete,
so gave a warning.
---
 compiler/cmm/CmmUtils.hs | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/compiler/cmm/CmmUtils.hs b/compiler/cmm/CmmUtils.hs
index 0a19b29acf..1a97c97027 100644
--- a/compiler/cmm/CmmUtils.hs
+++ b/compiler/cmm/CmmUtils.hs
@@ -1,6 +1,11 @@
 {-# LANGUAGE GADTs #-}
 {-# OPTIONS_GHC -fno-warn-deprecations #-}
 -- Warnings from deprecated blockToNodeList
+{-# OPTIONS_GHC -fno-warn-incomplete-patterns #-}
+#if __GLASGOW_HASKELL__ >= 703
+-- GHC 7.0.1 improved incomplete pattern warnings with GADTs
+{-# OPTIONS_GHC -fwarn-incomplete-patterns #-}
+#endif
 
 
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