1 files changed, 6 insertions, 14 deletions

diff --git a/zutil.h b/zutil.h
index 063c0e9..bc2d772 100644
--- a/zutil.h
+++ b/zutil.h
@@ -1,5 +1,5 @@
 /* zutil.h -- internal interface and configuration of the compression library
- * Copyright (C) 1995-1996 Jean-loup Gailly.
+ * Copyright (C) 1995 Jean-loup Gailly.
  * For conditions of distribution and use, see copyright notice in zlib.h
  */
 
@@ -15,7 +15,7 @@
 
 #include "zlib.h"
 
-#if defined(MSDOS) || defined(VMS) || defined(CRAY) || defined(WIN32)
+#if defined(MSDOS) || defined(VMS) || defined(CRAY)
 #   include <stddef.h>
 #   include <errno.h>
 #else
@@ -37,13 +37,9 @@ typedef unsigned short ush;
 typedef ush FAR ushf;
 typedef unsigned long  ulg;
 
-extern const char *z_errmsg[10]; /* indexed by 2-zlib_error */
-/* (size given to avoid silly warnings with Visual C++) */
+extern char *z_errmsg[]; /* indexed by 1-zlib_error */
 
-#define ERR_MSG(err) (char*)z_errmsg[Z_NEED_DICT-(err)]
-
-#define ERR_RETURN(strm,err) \
-  return (strm->msg = ERR_MSG(err), (err))
+#define ERR_RETURN(strm,err) return (strm->msg = z_errmsg[1-(err)], (err))
 /* To be used only when the state is known to be valid */
 
         /* common constants */
@@ -69,8 +65,6 @@ extern const char *z_errmsg[10]; /* indexed by 2-zlib_error */
 #define MAX_MATCH  258
 /* The minimum and maximum match lengths */
 
-#define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */
-
         /* target dependencies */
 
 #ifdef MSDOS
@@ -148,13 +142,11 @@ extern const char *z_errmsg[10]; /* indexed by 2-zlib_error */
 #  define HAVE_MEMCPY
 #endif
 #ifdef HAVE_MEMCPY
-#  ifdef SMALL_MEDIUM /* MSDOS small or medium model */
+#  if defined(M_I86SM) || defined(M_I86MM) /* MSC small or medium model */
 #    define zmemcpy _fmemcpy
-#    define zmemcmp _fmemcmp
 #    define zmemzero(dest, len) _fmemset(dest, 0, len)
 #  else
 #    define zmemcpy memcpy
-#    define zmemcmp memcmp
 #    define zmemzero(dest, len) memset(dest, 0, len)
 #  endif
 #else
@@ -184,7 +176,7 @@ extern const char *z_errmsg[10]; /* indexed by 2-zlib_error */
 #endif
 
 
-typedef uLong (*check_func) OF((uLong check, const Bytef *buf, uInt len));
+typedef uLong (*check_func) OF((uLong check, Bytef *buf, uInt len));
 
 extern void z_error    OF((char *m));