From ebd139587ed98f686d633e90dbef6716f2b0e9c7 Mon Sep 17 00:00:00 2001
From: "simonpj@microsoft.com" <unknown>
Date: Tue, 27 Jul 2010 09:45:49 +0000
Subject: [PATCH] Suppress warnings about recursive INLINE in output of
 desugarer

---
 compiler/simplCore/CoreMonad.lhs |    5 +++++
 1 file changed, 5 insertions(+)

diff --git a/compiler/simplCore/CoreMonad.lhs b/compiler/simplCore/CoreMonad.lhs
index f83f1bc..8e75a7b 100644
--- a/compiler/simplCore/CoreMonad.lhs
+++ b/compiler/simplCore/CoreMonad.lhs
@@ -166,6 +166,11 @@ displayLintResults dflags pass warns errs binds
        ; Err.ghcExit dflags 1 }
 
   | not (isEmptyBag warns)
+  , not (case pass of { CoreDesugar -> True; _ -> False })
+    	-- Suppress warnings after desugaring pass because some
+	-- are legitimate. Notably, the desugarer generates instance
+	-- methods with INLINE pragmas that form a mutually recursive
+	-- group.  Only afer a round of simplification are they unravelled.
   , not opt_NoDebugOutput
   , showLintWarnings pass
   = printDump (banner "warnings" $$ Err.pprMessageBag warns)
-- 
1.7.10.4