First step of implementation of WL#1518 "make bundled zlib

  usable for unix builds": zlib 1.2.1 imported

1 files changed, 6 insertions, 3 deletions

diff --git a/zlib/uncompr.c b/zlib/uncompr.c
index a287714f5de..b59e3d0defb 100644
--- a/zlib/uncompr.c
+++ b/zlib/uncompr.c
@@ -1,10 +1,11 @@
 /* uncompr.c -- decompress a memory buffer
- * Copyright (C) 1995-2002 Jean-loup Gailly.
- * For conditions of distribution and use, see copyright notice in zlib.h 
+ * Copyright (C) 1995-2003 Jean-loup Gailly.
+ * For conditions of distribution and use, see copyright notice in zlib.h
  */
 
 /* @(#) $Id$ */
 
+#define ZLIB_INTERNAL
 #include "zlib.h"
 
 /* ===========================================================================
@@ -49,7 +50,9 @@ int ZEXPORT uncompress (dest, destLen, source, sourceLen)
     err = inflate(&stream, Z_FINISH);
     if (err != Z_STREAM_END) {
         inflateEnd(&stream);
-        return err == Z_OK ? Z_BUF_ERROR : err;
+        if (err == Z_NEED_DICT || (err == Z_BUF_ERROR && stream.avail_in == 0))
+            return Z_DATA_ERROR;
+        return err;
     }
     *destLen = stream.total_out;