From f904833cbd502b2b28756e97bab6485e94617fac Mon Sep 17 00:00:00 2001
From: simonpj <unknown>
Date: Thu, 6 May 2004 12:25:49 +0000
Subject: [PATCH] [project @ 2004-05-06 12:25:49 by simonpj] Fix (head [])
 value for src span in mkSimpleMatch

---
 ghc/compiler/hsSyn/HsUtils.lhs |    6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/ghc/compiler/hsSyn/HsUtils.lhs b/ghc/compiler/hsSyn/HsUtils.lhs
index 3b61f8a..b864e16 100644
--- a/ghc/compiler/hsSyn/HsUtils.lhs
+++ b/ghc/compiler/hsSyn/HsUtils.lhs
@@ -54,8 +54,12 @@ mkHsPar e = L (getLoc e) (HsPar e)
 
 mkSimpleMatch :: [LPat id] -> LHsExpr id -> Type -> LMatch id
 mkSimpleMatch pats rhs rhs_ty
-  = addCLoc (head pats) rhs $
+  = L loc $
     Match pats Nothing (GRHSs (unguardedRHS rhs) [] rhs_ty)
+  where
+    loc = case pats of
+		[]      -> getLoc rhs
+		(pat:_) -> combineSrcSpans (getLoc pat) (getLoc rhs)
 
 unguardedRHS :: LHsExpr id -> [LGRHS id]
 unguardedRHS rhs@(L loc _) = [L loc (GRHS [L loc (ResultStmt rhs)])]
-- 
1.7.10.4