From 524a6f8bdf35c37998072fc1692c681c45a336f7 Mon Sep 17 00:00:00 2001
From: simonmar <unknown>
Date: Tue, 10 Jan 2006 14:39:38 +0000
Subject: [PATCH] [project @ 2006-01-10 14:39:38 by simonmar] prevChar: don't
 back up over decoding errors

---
 ghc/compiler/utils/Encoding.hs |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ghc/compiler/utils/Encoding.hs b/ghc/compiler/utils/Encoding.hs
index 7b35e65..152bf3c 100644
--- a/ghc/compiler/utils/Encoding.hs
+++ b/ghc/compiler/utils/Encoding.hs
@@ -105,7 +105,7 @@ utf8PrevChar p = utf8CharStart (p `plusPtr` (-1))
 utf8CharStart :: Ptr Word8 -> IO (Ptr Word8)
 utf8CharStart p = go p
  where go p = do w <- peek p
-		 if (w .&. 0xC0) == 0x80
+		 if w >= 0x80 && w < 0xC0
 			then go (p `plusPtr` (-1))
 			else return p
 
-- 
1.7.10.4