diff --git a/ANNOUNCE b/ANNOUNCE
index 7a2cecd..ac151fb 100644
--- a/ANNOUNCE
+++ b/ANNOUNCE
@@ -1,5 +1,5 @@
 
-Libpng 1.2.0beta5 - August 8, 2001
+Libpng 1.2.0rc1 - August 25, 2001
 
 This is a public release of libpng, intended for use in production codes.
 
@@ -12,19 +12,19 @@
   Enabled user memory function by default.
   Increased png_mng_features flag from png_byte to png_uint_32.
   Bumped shared-library (so-number) and dll-number to 3.
-  Updated contrib/gregbook
-  Updated makefile.ibmc
+  Updated makefile.ibmc, makefile.gcmmx
   Added some typecasts to eliminate gcc 3.0 warnings.  Changed prototypes
      of png_write_oFFS width and height from png_uint_32 to png_int_32.
   Updated example.c
   Revised prototypes for png_debug_malloc and png_debug_free in pngtest.c
-  Revised makefile.gcmmx
   Revised pnggccrd.c to conditionally compile some thread-unsafe code only
      when PNG_THREAD_UNSAFE_OK is defined.
   Added tests to prevent pngwutil.c from writing a bKGD or tRNS chunk with
      value exceeding 2^bit_depth-1
-  Replaced calls to fprintf(stderr,...) with png_warning() in pnggccrd.c
   Removed restriction that do_invert_mono only operate on 1-bit opaque files
+  Replaced calls to fprintf(stderr,...) with png_warning() or png_debug()
+     in pnggccrd.c
+  Fixed contrib/gregbook/rpng-x.c, rpng2-x.c to avoid crash with XFreeGC().
 
 Send comments/corrections/commendations to
 png-implement@ccrc.wustl.edu or to randeg@alum.rpi.edu
diff --git a/CHANGES b/CHANGES
index caf9310..bae5fe3 100644
--- a/CHANGES
+++ b/CHANGES
@@ -977,6 +977,9 @@
   Revised makefile.sgi and makefile.sggcc
   Replaced calls to fprintf(stderr,...) with png_warning() in pnggccrd.c
   Removed restriction that do_invert_mono only operate on 1-bit opaque files
+version 1.2.0rc1 [August 25, 2001]
+  Changed a png_warning() to png_debug() in pnggccrd.c
+  Fixed contrib/gregbook/rpng-x.c, rpng2-x.c to avoid crash with XFreeGC().
 
 Send comments/corrections/commendations to
 png-implement@ccrc.wustl.edu or to randeg@alum.rpi.edu
diff --git a/INSTALL b/INSTALL
index d33151b..d84e73a 100644
--- a/INSTALL
+++ b/INSTALL
@@ -1,5 +1,5 @@
 
-Installing libpng version 1.2.0beta5 - August 8, 2001
+Installing libpng version 1.2.0rc1 - August 25, 2001
 
 Before installing libpng, you must first install zlib.  zlib
 can usually be found wherever you got libpng.  zlib can be
@@ -10,7 +10,7 @@
 version of zlib that's installed.
 
 You can rename the directories that you downloaded (they
-might be called "libpng-1.2.0beta5" or "lpng109" and "zlib-1.1.3"
+might be called "libpng-1.2.0rc1" or "lpng109" and "zlib-1.1.3"
 or "zlib113") so that you have directories called "zlib" and "libpng".
 
 Your directory structure should look like this:
@@ -64,8 +64,8 @@
 include
 
  makefile.std      =>  Generic UNIX makefile (cc, creates static libpng.a)
- makefile.linux    =>  Linux/ELF makefile (gcc, creates libpng.so.2.1.2.0beta5)
- makefile.gcmmx    =>  Linux/ELF makefile (gcc, creates libpng.so.2.1.2.0beta5,
+ makefile.linux    =>  Linux/ELF makefile (gcc, creates libpng.so.2.1.2.0rc1)
+ makefile.gcmmx    =>  Linux/ELF makefile (gcc, creates libpng.so.2.1.2.0rc1,
                        uses assembler code tuned for Intel MMX platform)
  makefile.gcc      =>  Generic makefile (gcc, creates static libpng.a)
  makefile.knr      =>  Archaic UNIX Makefile that converts files with
@@ -82,9 +82,9 @@
  makefile.macosx   =>  MACOS X Makefile
  makefile.netbsd   =>  NetBSD/cc makefile, uses PNGGCCRD
  makefile.sgi      =>  Silicon Graphics IRIX makefile (cc, creates static lib)
- makefile.sggcc    =>  Silicon Graphics (gcc, creates libpng.so.2.1.2.0beta5)
+ makefile.sggcc    =>  Silicon Graphics (gcc, creates libpng.so.2.1.2.0rc1)
  makefile.sunos    =>  Sun makefile
- makefile.solaris  =>  Solaris 2.X makefile (gcc, creates libpng.so.2.1.2.0beta5)
+ makefile.solaris  =>  Solaris 2.X makefile (gcc, creates libpng.so.2.1.2.0rc1)
  makefile.sco      =>  For SCO OSr5  ELF and Unixware 7 with Native cc
  makefile.mips     =>  MIPS makefile
  makefile.acorn    =>  Acorn makefile
diff --git a/LICENSE b/LICENSE
index 26d2c90..81ff143 100644
--- a/LICENSE
+++ b/LICENSE
@@ -8,7 +8,7 @@
 If you modify libpng you may insert additional notices immediately following
 this sentence.
 
-libpng versions 1.0.7, July 1, 2000, through 1.2.0beta5, August 8, 2001, are
+libpng versions 1.0.7, July 1, 2000, through 1.2.0rc1, August 25, 2001, are
 Copyright (c) 2000 Glenn Randers-Pehrson
 and are distributed according to the same disclaimer and license as libpng-1.0.6
 with the following individuals added to the list of Contributing Authors
@@ -99,4 +99,4 @@
 
 Glenn Randers-Pehrson
 randeg@alum.rpi.edu
-August 8, 2001
+August 25, 2001
diff --git a/README b/README
index 4aadc09..7f09b57 100644
--- a/README
+++ b/README
@@ -1,4 +1,4 @@
-README for libpng 1.2.0beta5 - August 8, 2001 (shared library 2.1)
+README for libpng 1.2.0rc1 - August 25, 2001 (shared library 2.1)
 See the note about version numbers near the top of png.h
 
 See INSTALL for instructions on how to install libpng.
@@ -187,9 +187,9 @@
        descrip.mms      =>  VMS makefile for MMS or MMK
        makefile.std     =>  Generic UNIX makefile (cc, creates static libpng.a)
        makefile.linux   =>  Linux/ELF makefile
-                            (gcc, creates libpng.so.2.1.2.0beta5)
+                            (gcc, creates libpng.so.2.1.2.0rc1)
        makefile.gcmmx   =>  Linux/ELF makefile (gcc, creates
-                            libpng.so.2.1.2.0beta5, uses assembler code
+                            libpng.so.2.1.2.0rc1, uses assembler code
                             tuned for Intel MMX platform)
        makefile.gcc     =>  Generic makefile (gcc, creates static libpng.a)
        makefile.knr     =>  Archaic UNIX Makefile that converts files with
@@ -206,10 +206,10 @@
        makefile.macosx  =>  MACOS X Makefile
        makefile.netbsd  =>  NetBSD/cc makefile, uses PNGGCCRD
        makefile.sgi     =>  Silicon Graphics IRIX (cc, creates static lib)
-       makefile.sggcc   =>  Silicon Graphics (gcc, creates libpng.so.2.1.2.0beta5)
+       makefile.sggcc   =>  Silicon Graphics (gcc, creates libpng.so.2.1.2.0rc1)
        makefile.sunos   =>  Sun makefile
        makefile.solaris =>  Solaris 2.X makefile
-                            (gcc, creates libpng.so.2.1.2.0beta5)
+                            (gcc, creates libpng.so.2.1.2.0rc1)
        makefile.sco     =>  For SCO OSr5  ELF and Unixware 7 with Native cc
        makefile.mips    =>  MIPS makefile
        makefile.acorn   =>  Acorn makefile
diff --git a/Y2KINFO b/Y2KINFO
index 573bd51..f56c8b2 100644
--- a/Y2KINFO
+++ b/Y2KINFO
@@ -1,13 +1,13 @@
    Y2K compliance in libpng:
    =========================
 
-      August 8, 2001
+      August 25, 2001
 
       Since the PNG Development group is an ad-hoc body, we can't make
       an official declaration.
 
       This is your unofficial assurance that libpng from version 0.71 and
-      upward through 1.2.0beta5 are Y2K compliant.  It is my belief that earlier
+      upward through 1.2.0rc1 are Y2K compliant.  It is my belief that earlier
       versions were also Y2K compliant.
 
       Libpng only has three year fields.  One is a 2-byte unsigned integer
diff --git a/configure b/configure
index 9ef33f1..a502b9d 100755
--- a/configure
+++ b/configure
@@ -1,5 +1,5 @@
 echo "
-  There is no \"configure\" script for Libpng-1.2.0beta5.  Instead, please
+  There is no \"configure\" script for Libpng-1.2.0rc1.  Instead, please
   copy the appropriate makefile for your system from the \"scripts\"
   directory.  Read the INSTALL file for more details.
 "
diff --git a/contrib/gregbook/rpng-x.c b/contrib/gregbook/rpng-x.c
index d3dc89a..e787ef1 100644
--- a/contrib/gregbook/rpng-x.c
+++ b/contrib/gregbook/rpng-x.c
@@ -22,6 +22,7 @@
     - 1.11:  added extra set of parentheses to png_jmpbuf() macro; fixed
               command-line parsing bug
     - 1.12:  fixed small X memory leak (thanks to Francois Petitjean)
+    - 1.13:  fixed XFreeGC() crash bug
 
   ---------------------------------------------------------------------------
 
@@ -52,7 +53,7 @@
 
 #define PROGNAME  "rpng-x"
 #define LONGNAME  "Simple PNG Viewer for X"
-#define VERSION   "1.12 of 28 May 2001"
+#define VERSION   "1.13 of 16 August 2001"
 
 #include <stdio.h>
 #include <stdlib.h>
@@ -118,6 +119,7 @@
 static int have_nondefault_visual = FALSE;
 static int have_colormap = FALSE;
 static int have_window = FALSE;
+static int have_gc = FALSE;
 /*
 ulg numcolors=0, pixels[256];
 ush reds[256], greens[256], blues[256];
@@ -556,6 +558,7 @@
     XMapWindow(display, window);
 
     gc = XCreateGC(display, window, 0, &gcvalues);
+    have_gc = TRUE;
 
 /*---------------------------------------------------------------------------
     Fill window with the specified background color.
@@ -825,7 +828,8 @@
         ximage = NULL;
     }
 
-    XFreeGC(display, gc);
+    if (have_gc)
+        XFreeGC(display, gc);
 
     if (have_window)
         XDestroyWindow(display, window);
diff --git a/contrib/gregbook/rpng2-x.c b/contrib/gregbook/rpng2-x.c
index 80ba760..1c61283 100644
--- a/contrib/gregbook/rpng2-x.c
+++ b/contrib/gregbook/rpng2-x.c
@@ -27,6 +27,7 @@
     - 1.12:  added -pause option for demos and testing
     - 1.20:  added runtime MMX-enabling/disabling and new -mmx* options
     - 1.21:  fixed small X memory leak (thanks to Francois Petitjean)
+    - 1.22:  fixed XFreeGC() crash bug
 
   ---------------------------------------------------------------------------
 
@@ -57,7 +58,7 @@
 
 #define PROGNAME  "rpng2-x"
 #define LONGNAME  "Progressive PNG Viewer for X"
-#define VERSION   "1.21 of 30 May 2001"
+#define VERSION   "1.22 of 16 August 2001"
 
 #include <stdio.h>
 #include <stdlib.h>
@@ -228,6 +229,7 @@
 static int have_nondefault_visual = FALSE;
 static int have_colormap = FALSE;
 static int have_window = FALSE;
+static int have_gc = FALSE;
 
 
 
@@ -759,6 +761,7 @@
     XMapWindow(display, window);
 
     gc = XCreateGC(display, window, 0, &gcvalues);
+    have_gc = TRUE;
 
 /*---------------------------------------------------------------------------
     Allocate memory for the X- and display-specific version of the image.
@@ -1374,7 +1377,8 @@
         ximage = NULL;
     }
 
-    XFreeGC(display, gc);
+    if (have_gc)
+        XFreeGC(display, gc);
 
     if (have_window)
         XDestroyWindow(display, window);
diff --git a/libpng.3 b/libpng.3
index 579b46b..2db3e25 100644
--- a/libpng.3
+++ b/libpng.3
@@ -1,6 +1,6 @@
-.TH LIBPNG 3 "August 8, 2001"
+.TH LIBPNG 3 "August 25, 2001"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.2.0beta5
+libpng \- Portable Network Graphics (PNG) Reference Library 1.2.0rc1
 .SH SYNOPSIS
 \fI\fB
 
@@ -787,7 +787,7 @@
 .SH LIBPNG.TXT
 libpng.txt - A description on how to use and modify libpng
 
- libpng version 1.2.0beta5 - August 8, 2001
+ libpng version 1.2.0rc1 - August 25, 2001
  Updated and distributed by Glenn Randers-Pehrson
  <randeg@alum.rpi.edu>
  Copyright (c) 1998-2001 Glenn Randers-Pehrson
@@ -1591,17 +1591,18 @@
         color_type == PNG_COLOR_TYPE_RGB_ALPHA)
         png_set_bgr(png_ptr);
 
-PNG files store RGB pixels packed into 3 bytes. This code expands them
-into 4 bytes for windowing systems that need them in this format:
+PNG files store RGB pixels packed into 3 or 6 bytes. This code expands them
+into 4 or 8 bytes for windowing systems that need them in this format:
 
-    if (bit_depth == 8 && color_type ==
-        PNG_COLOR_TYPE_RGB) png_set_filler(png_ptr,
-        filler, PNG_FILLER_BEFORE);
+    if (color_type == PNG_COLOR_TYPE_RGB)
+        png_set_filler(png_ptr, filler, PNG_FILLER_BEFORE);
 
 where "filler" is the 8 or 16-bit number to fill with, and the location is
 either PNG_FILLER_BEFORE or PNG_FILLER_AFTER, depending upon whether
 you want the filler before the RGB or after.  This transformation
-does not affect images that already have full alpha channels.
+does not affect images that already have full alpha channels.  To add an
+opaque alpha channel, use filler=0xff or 0xffff and PNG_FILLER_AFTER which
+will generate RGBA pixels.
 
 If you are reading an image with an alpha channel, and you need the
 data as ARGB instead of the normal PNG format RGBA:
@@ -3613,13 +3614,13 @@
 
 .SH IX. Y2K Compliance in libpng
 
-August 8, 2001
+August 25, 2001
 
 Since the PNG Development group is an ad-hoc body, we can't make
 an official declaration.
 
 This is your unofficial assurance that libpng from version 0.71 and
-upward through 1.2.0beta5 are Y2K compliant.  It is my belief that earlier
+upward through 1.2.0rc1 are Y2K compliant.  It is my belief that earlier
 versions were also Y2K compliant.
 
 Libpng only has three year fields.  One is a 2-byte unsigned integer that
@@ -3794,7 +3795,7 @@
 
 Thanks to Frank J. T. Wojcik for helping with the documentation.
 
-Libpng version 1.2.0beta5 - August 8, 2001:
+Libpng version 1.2.0rc1 - August 25, 2001:
 Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
 Currently maintained by Glenn Randers-Pehrson (randeg@alum.rpi.edu).
 
@@ -3811,7 +3812,7 @@
 If you modify libpng you may insert additional notices immediately following
 this sentence.
 
-libpng versions 1.0.7, July 1, 2000, through  1.2.0beta5, August 8, 2001, are
+libpng versions 1.0.7, July 1, 2000, through  1.2.0rc1, August 25, 2001, are
 Copyright (c) 2000-2001 Glenn Randers-Pehrson, and are
 distributed according to the same disclaimer and license as libpng-1.0.6
 with the following individuals added to the list of Contributing Authors
@@ -3903,7 +3904,7 @@
 
 Glenn Randers-Pehrson
 randeg@alum.rpi.edu
-August 8, 2001
+August 25, 2001
 
 .\" end of man page
 
diff --git a/libpng.txt b/libpng.txt
index 0e27c17..451400e 100644
--- a/libpng.txt
+++ b/libpng.txt
@@ -1,6 +1,6 @@
 libpng.txt - A description on how to use and modify libpng
 
- libpng version 1.2.0beta5 - August 8, 2001
+ libpng version 1.2.0rc1 - August 25, 2001
  Updated and distributed by Glenn Randers-Pehrson
  <randeg@alum.rpi.edu>
  Copyright (c) 1998-2001 Glenn Randers-Pehrson
@@ -804,17 +804,18 @@
         color_type == PNG_COLOR_TYPE_RGB_ALPHA)
         png_set_bgr(png_ptr);
 
-PNG files store RGB pixels packed into 3 bytes. This code expands them
-into 4 bytes for windowing systems that need them in this format:
+PNG files store RGB pixels packed into 3 or 6 bytes. This code expands them
+into 4 or 8 bytes for windowing systems that need them in this format:
 
-    if (bit_depth == 8 && color_type ==
-        PNG_COLOR_TYPE_RGB) png_set_filler(png_ptr,
-        filler, PNG_FILLER_BEFORE);
+    if (color_type == PNG_COLOR_TYPE_RGB)
+        png_set_filler(png_ptr, filler, PNG_FILLER_BEFORE);
 
 where "filler" is the 8 or 16-bit number to fill with, and the location is
 either PNG_FILLER_BEFORE or PNG_FILLER_AFTER, depending upon whether
 you want the filler before the RGB or after.  This transformation
-does not affect images that already have full alpha channels.
+does not affect images that already have full alpha channels.  To add an
+opaque alpha channel, use filler=0xff or 0xffff and PNG_FILLER_AFTER which
+will generate RGBA pixels.
 
 If you are reading an image with an alpha channel, and you need the
 data as ARGB instead of the normal PNG format RGBA:
@@ -2826,13 +2827,13 @@
 
 IX. Y2K Compliance in libpng
 
-August 8, 2001
+August 25, 2001
 
 Since the PNG Development group is an ad-hoc body, we can't make
 an official declaration.
 
 This is your unofficial assurance that libpng from version 0.71 and
-upward through 1.2.0beta5 are Y2K compliant.  It is my belief that earlier
+upward through 1.2.0rc1 are Y2K compliant.  It is my belief that earlier
 versions were also Y2K compliant.
 
 Libpng only has three year fields.  One is a 2-byte unsigned integer that
diff --git a/libpngpf.3 b/libpngpf.3
index 34f00ec..010852e 100644
--- a/libpngpf.3
+++ b/libpngpf.3
@@ -1,6 +1,6 @@
-.TH LIBPNGPF 3 "August 8, 2001"
+.TH LIBPNGPF 3 "August 25, 2001"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.2.0beta5
+libpng \- Portable Network Graphics (PNG) Reference Library 1.2.0rc1
 (private functions)
 .SH SYNOPSIS
 \fB#include <png.h>\fP
diff --git a/png.5 b/png.5
index cd7faf0..be751a5 100644
--- a/png.5
+++ b/png.5
@@ -1,4 +1,4 @@
-.TH PNG 5 "August 8, 2001"
+.TH PNG 5 "August 25, 2001"
 .SH NAME
 png \- Portable Network Graphics (PNG) format
 .SH DESCRIPTION
diff --git a/png.c b/png.c
index e62d9a4..010396c 100644
--- a/png.c
+++ b/png.c
@@ -1,7 +1,7 @@
 
 /* png.c - location for general purpose libpng functions
  *
- * libpng version 1.2.0beta5 - August 8, 2001
+ * libpng version 1.2.0rc1 - August 25, 2001
  * Copyright (c) 1998-2001 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -13,14 +13,14 @@
 #include "png.h"
 
 /* Generate a compiler error if there is an old png.h in the search path. */
-typedef version_1_2_0beta5 Your_png_h_is_not_version_1_2_0beta5;
+typedef version_1_2_0rc1 Your_png_h_is_not_version_1_2_0rc1;
 
 /* Version information for C files.  This had better match the version
  * string defined in png.h.  */
 
 #ifdef PNG_USE_GLOBAL_ARRAYS
 /* png_libpng_ver was changed to a function in version 1.0.5c */
-const char png_libpng_ver[18] = "1.2.0beta5";
+const char png_libpng_ver[18] = "1.2.0rc1";
 
 /* png_sig was changed to a function in version 1.0.5c */
 /* Place to hold the signature string for a PNG file. */
@@ -646,7 +646,7 @@
 png_get_copyright(png_structp png_ptr)
 {
    if (png_ptr != NULL || png_ptr == NULL)  /* silence compiler warning */
-   return ((png_charp) "\n libpng version 1.2.0beta5 - August 8, 2001\n\
+   return ((png_charp) "\n libpng version 1.2.0rc1 - August 25, 2001\n\
    Copyright (c) 1998-2001 Glenn Randers-Pehrson\n\
    Copyright (c) 1996, 1997 Andreas Dilger\n\
    Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.\n");
@@ -664,8 +664,8 @@
 {
    /* Version of *.c files used when building libpng */
    if(png_ptr != NULL) /* silence compiler warning about unused png_ptr */
-      return((png_charp) "1.2.0beta5");
-   return((png_charp) "1.2.0beta5");
+      return((png_charp) "1.2.0rc1");
+   return((png_charp) "1.2.0rc1");
 }
 
 png_charp PNGAPI
diff --git a/png.h b/png.h
index 06a6533..3505c27 100644
--- a/png.h
+++ b/png.h
@@ -1,7 +1,7 @@
 
 /* png.h - header file for PNG reference library
  *
- * libpng version 1.2.0beta5 - August 8, 2001
+ * libpng version 1.2.0rc1 - August 25, 2001
  * Copyright (c) 1998-2001 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -9,7 +9,7 @@
  * Authors and maintainers:
  *  libpng versions 0.71, May 1995, through 0.88, January 1996: Guy Schalnat
  *  libpng versions 0.89c, June 1996, through 0.96, May 1997: Andreas Dilger
- *  libpng versions 0.97, January 1998, through 1.2.0beta5 - August 8, 2001: Glenn
+ *  libpng versions 0.97, January 1998, through 1.2.0rc1 - August 25, 2001: Glenn
  *  See also "Contributing Authors", below.
  *
  * Note about libpng version numbers:
@@ -105,7 +105,7 @@
  * If you modify libpng you may insert additional notices immediately following
  * this sentence.
  *
- * libpng versions 1.0.7, July 1, 2000, through  1.2.0beta5, August 8, 2001, are
+ * libpng versions 1.0.7, July 1, 2000, through  1.2.0rc1, August 25, 2001, are
  * Copyright (c) 2000, 2001 Glenn Randers-Pehrson, and are
  * distributed according to the same disclaimer and license as libpng-1.0.6
  * with the following individuals added to the list of Contributing Authors
@@ -210,13 +210,13 @@
  * Y2K compliance in libpng:
  * =========================
  *
- *    August 8, 2001
+ *    August 25, 2001
  *
  *    Since the PNG Development group is an ad-hoc body, we can't make
  *    an official declaration.
  *
  *    This is your unofficial assurance that libpng from version 0.71 and
- *    upward through 1.2.0beta5 are Y2K compliant.  It is my belief that earlier
+ *    upward through 1.2.0rc1 are Y2K compliant.  It is my belief that earlier
  *    versions were also Y2K compliant.
  *
  *    Libpng only has three year fields.  One is a 2-byte unsigned integer
@@ -272,7 +272,7 @@
  */
 
 /* Version information for png.h - this should match the version in png.c */
-#define PNG_LIBPNG_VER_STRING "1.2.0beta5"
+#define PNG_LIBPNG_VER_STRING "1.2.0rc1"
 
 #define PNG_LIBPNG_VER_SONUM   3
 #define PNG_LIBPNG_VER_DLLNUM  %DLLNUM%
@@ -284,7 +284,7 @@
 /* This should match the numeric part of the final component of
  * PNG_LIBPNG_VER_STRING, omitting any leading zero: */
 
-#define PNG_LIBPNG_VER_BUILD  5
+#define PNG_LIBPNG_VER_BUILD  1
 
 #define PNG_LIBPNG_BUILD_ALPHA    1
 #define PNG_LIBPNG_BUILD_BETA     2
@@ -292,7 +292,7 @@
 #define PNG_LIBPNG_BUILD_STABLE   4
 #define PNG_LIBPNG_BUILD_TYPEMASK 7
 #define PNG_LIBPNG_BUILD_PATCH    8 /* Can be OR'ed with STABLE only */
-#define PNG_LIBPNG_BUILD_TYPE 2
+#define PNG_LIBPNG_BUILD_TYPE 3
 
 /* Careful here.  At one time, Guy wanted to use 082, but that would be octal.
  * We must not include leading zeros.
@@ -1208,13 +1208,15 @@
    png_free_ptr free_fn;             /* function for freeing memory */
 #endif
 
+   png_bytep big_row_buf;         /* buffer to save current (unfiltered) row */
+
 };
 
 
 /* This prevents a compiler error in png_get_copyright() in png.c if png.c
-   and png.h are both at version 1.2.0beta5
+   and png.h are both at version 1.2.0rc1
  */
-typedef png_structp version_1_2_0beta5;
+typedef png_structp version_1_2_0rc1;
 
 typedef png_struct FAR * FAR * png_structpp;
 
@@ -2331,7 +2333,7 @@
 /* Maintainer: Put new public prototypes here ^, in libpng.3, and project defs */
 
 #define PNG_HEADER_VERSION_STRING \
-   " libpng version 1.2.0beta5 - August 8, 2001 (header)\n"
+   " libpng version 1.2.0rc1 - August 25, 2001 (header)\n"
 
 #ifdef PNG_READ_COMPOSITE_NODIV_SUPPORTED
 /* With these routines we avoid an integer divide, which will be slower on
diff --git a/pngasmrd.h b/pngasmrd.h
index 033e36c..33b0dc9 100644
--- a/pngasmrd.h
+++ b/pngasmrd.h
@@ -1,6 +1,6 @@
 /* pngasmrd.h - assembler version of utilities to read a PNG file
  *
- * libpng 1.2.0beta5 - August 8, 2001
+ * libpng 1.2.0rc1 - August 25, 2001
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 2001 Glenn Randers-Pehrson
  *
diff --git a/pngconf.h b/pngconf.h
index a66b495..36817e0 100644
--- a/pngconf.h
+++ b/pngconf.h
@@ -1,6 +1,6 @@
 /* pngconf.h - machine configurable file for libpng
  *
- * libpng 1.2.0beta5 - August 8, 2001
+ * libpng 1.2.0rc1 - August 25, 2001
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2001 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
diff --git a/pngerror.c b/pngerror.c
index 60a6571..a0fc523 100644
--- a/pngerror.c
+++ b/pngerror.c
@@ -1,7 +1,7 @@
 
 /* pngerror.c - stub functions for i/o and memory allocation
  *
- * libpng 1.2.0beta5 - August 8, 2001
+ * libpng 1.2.0rc1 - August 25, 2001
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2001 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
diff --git a/pnggccrd.c b/pnggccrd.c
index 0d448f0..52f9c43 100644
--- a/pnggccrd.c
+++ b/pnggccrd.c
@@ -6,7 +6,7 @@
  *     and http://www.intel.com/drg/pentiumII/appnotes/923/923.htm
  *     for Intel's performance analysis of the MMX vs. non-MMX code.
  *
- * libpng version 1.2.0beta5 - August 8, 2001
+ * libpng version 1.2.0rc1 - August 25, 2001
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2001 Glenn Randers-Pehrson
  * Copyright (c) 1998, Intel Corporation
@@ -2637,12 +2637,12 @@
                      for (j = 0; j < png_pass_inc[pass]; j++)
                      {
 #ifdef PNG_DEBUG
-               if (dp < row || dp+3 > row+png_ptr->row_buf_size)
-                 {
-                  printf("dp out of bounds: row=%d, dp=%d, rp=%d\n",row, dp,
-                    row+png_ptr->row_buf_size);
-                  printf("row_buf=%d\n",png_ptr->row_buf_size);
-                 }
+                        if (dp < row || dp+3 > row+png_ptr->row_buf_size)
+                        {
+                           printf("dp out of bounds: row=%d, dp=%d, rp=%d\n",
+                             row, dp, row+png_ptr->row_buf_size);
+                           printf("row_buf=%d\n",png_ptr->row_buf_size);
+                        }
 #endif
                         png_memcpy(dp, v, 4);
                         dp -= 4;
@@ -2849,53 +2849,76 @@
          "avg_3lp:                        \n\t"
             "movq (%%edi,%%ecx,), %%mm0   \n\t" // load mm0 with Avg(x)
             "movq %%mm5, %%mm3            \n\t"
-            "psrlq _ShiftRem, %%mm2       \n\t" // correct position Raw(x-bpp) data
+            "psrlq _ShiftRem, %%mm2       \n\t" // correct position Raw(x-bpp)
+                                                // data
             "movq (%%esi,%%ecx,), %%mm1   \n\t" // load mm1 with Prior(x)
             "movq %%mm7, %%mm6            \n\t"
             "pand %%mm1, %%mm3            \n\t" // get lsb for each prev_row byte
             "psrlq $1, %%mm1              \n\t" // divide prev_row bytes by 2
-            "pand  %%mm4, %%mm1           \n\t" // clear invalid bit 7 of each byte
-            "paddb %%mm1, %%mm0           \n\t" // add (Prev_row/2) to Avg for each byte
+            "pand  %%mm4, %%mm1           \n\t" // clear invalid bit 7 of each
+                                                // byte
+            "paddb %%mm1, %%mm0           \n\t" // add (Prev_row/2) to Avg for
+                                                // each byte
             // add 1st active group (Raw(x-bpp)/2) to average with LBCarry
-            "movq %%mm3, %%mm1            \n\t" // now use mm1 for getting LBCarrys
-            "pand %%mm2, %%mm1            \n\t" // get LBCarrys for each byte where both
+            "movq %%mm3, %%mm1            \n\t" // now use mm1 for getting
+                                                // LBCarrys
+            "pand %%mm2, %%mm1            \n\t" // get LBCarrys for each byte
+                                                // where both
                                // lsb's were == 1 (only valid for active group)
             "psrlq $1, %%mm2              \n\t" // divide raw bytes by 2
-            "pand  %%mm4, %%mm2           \n\t" // clear invalid bit 7 of each byte
-            "paddb %%mm1, %%mm2           \n\t" // add LBCarrys to (Raw(x-bpp)/2) for each byte
-            "pand %%mm6, %%mm2            \n\t" // leave only Active Group 1 bytes to add to Avg
-            "paddb %%mm2, %%mm0           \n\t" // add (Raw/2) + LBCarrys to Avg for each Active
+            "pand  %%mm4, %%mm2           \n\t" // clear invalid bit 7 of each
+                                                // byte
+            "paddb %%mm1, %%mm2           \n\t" // add LBCarrys to (Raw(x-bpp)/2)
+                                                // for each byte
+            "pand %%mm6, %%mm2            \n\t" // leave only Active Group 1
+                                                // bytes to add to Avg
+            "paddb %%mm2, %%mm0           \n\t" // add (Raw/2) + LBCarrys to
+                                                // Avg for each Active
                                //  byte
             // add 2nd active group (Raw(x-bpp)/2) to average with _LBCarry
-            "psllq _ShiftBpp, %%mm6       \n\t" // shift the mm6 mask to cover bytes 3-5
+            "psllq _ShiftBpp, %%mm6       \n\t" // shift the mm6 mask to cover
+                                                // bytes 3-5
             "movq %%mm0, %%mm2            \n\t" // mov updated Raws to mm2
             "psllq _ShiftBpp, %%mm2       \n\t" // shift data to pos. correctly
-            "movq %%mm3, %%mm1            \n\t" // now use mm1 for getting LBCarrys
-            "pand %%mm2, %%mm1            \n\t" // get LBCarrys for each byte where both
+            "movq %%mm3, %%mm1            \n\t" // now use mm1 for getting
+                                                // LBCarrys
+            "pand %%mm2, %%mm1            \n\t" // get LBCarrys for each byte
+                                                // where both
                                // lsb's were == 1 (only valid for active group)
             "psrlq $1, %%mm2              \n\t" // divide raw bytes by 2
-            "pand  %%mm4, %%mm2           \n\t" // clear invalid bit 7 of each byte
-            "paddb %%mm1, %%mm2           \n\t" // add LBCarrys to (Raw(x-bpp)/2) for each byte
-            "pand %%mm6, %%mm2            \n\t" // leave only Active Group 2 bytes to add to Avg
-            "paddb %%mm2, %%mm0           \n\t" // add (Raw/2) + LBCarrys to Avg for each Active
+            "pand  %%mm4, %%mm2           \n\t" // clear invalid bit 7 of each
+                                                // byte
+            "paddb %%mm1, %%mm2           \n\t" // add LBCarrys to (Raw(x-bpp)/2)
+                                                // for each byte
+            "pand %%mm6, %%mm2            \n\t" // leave only Active Group 2
+                                                // bytes to add to Avg
+            "paddb %%mm2, %%mm0           \n\t" // add (Raw/2) + LBCarrys to
+                                                // Avg for each Active
                                //  byte
 
             // add 3rd active group (Raw(x-bpp)/2) to average with _LBCarry
-            "psllq _ShiftBpp, %%mm6       \n\t" // shift mm6 mask to cover last two
+            "psllq _ShiftBpp, %%mm6       \n\t" // shift mm6 mask to cover last
+                                                // two
                                  // bytes
             "movq %%mm0, %%mm2            \n\t" // mov updated Raws to mm2
             "psllq _ShiftBpp, %%mm2       \n\t" // shift data to pos. correctly
                               // Data only needs to be shifted once here to
                               // get the correct x-bpp offset.
-            "movq %%mm3, %%mm1            \n\t" // now use mm1 for getting LBCarrys
-            "pand %%mm2, %%mm1            \n\t" // get LBCarrys for each byte where both
+            "movq %%mm3, %%mm1            \n\t" // now use mm1 for getting
+                                                // LBCarrys
+            "pand %%mm2, %%mm1            \n\t" // get LBCarrys for each byte
+                                                // where both
                               // lsb's were == 1 (only valid for active group)
             "psrlq $1, %%mm2              \n\t" // divide raw bytes by 2
-            "pand  %%mm4, %%mm2           \n\t" // clear invalid bit 7 of each byte
-            "paddb %%mm1, %%mm2           \n\t" // add LBCarrys to (Raw(x-bpp)/2) for each byte
-            "pand %%mm6, %%mm2            \n\t" // leave only Active Group 2 bytes to add to Avg
+            "pand  %%mm4, %%mm2           \n\t" // clear invalid bit 7 of each
+                                                // byte
+            "paddb %%mm1, %%mm2           \n\t" // add LBCarrys to (Raw(x-bpp)/2)
+                                                // for each byte
+            "pand %%mm6, %%mm2            \n\t" // leave only Active Group 2
+                                                // bytes to add to Avg
             "addl $8, %%ecx               \n\t"
-            "paddb %%mm2, %%mm0           \n\t" // add (Raw/2) + LBCarrys to Avg for each Active
+            "paddb %%mm2, %%mm0           \n\t" // add (Raw/2) + LBCarrys to
+                                                // Avg for each Active
                                                 // byte
             // now ready to write back to memory
             "movq %%mm0, -8(%%edi,%%ecx,) \n\t"
@@ -2933,7 +2956,8 @@
             "movq _HBClearMask, %%mm4    \n\t"
 
             // re-init address pointers and offset
-            "movl _dif, %%ecx            \n\t" // ecx:  x = offset to alignment boundary
+            "movl _dif, %%ecx            \n\t" // ecx:  x = offset to
+                                               // alignment boundary
 
             // load _ActiveMask and clear all bytes except for 1st active group
             "movq _ActiveMask, %%mm7     \n\t"
@@ -2942,7 +2966,8 @@
 // preload  "movl prev_row, %%esi        \n\t" // esi:  Prior(x)
             "movq %%mm7, %%mm6           \n\t"
             "movq _LBCarryMask, %%mm5    \n\t"
-            "psllq _ShiftBpp, %%mm6      \n\t" // create mask for 2nd active group
+            "psllq _ShiftBpp, %%mm6      \n\t" // create mask for 2nd active
+                                               // group
 
             // prime the pump:  load the first Raw(x-bpp) data set
             "movq -8(%%edi,%%ecx,), %%mm2 \n\t" // load previous aligned 8 bytes
@@ -2955,30 +2980,44 @@
             "movq %%mm5, %%mm3           \n\t"
             "pand %%mm1, %%mm3           \n\t" // get lsb for each prev_row byte
             "psrlq $1, %%mm1             \n\t" // divide prev_row bytes by 2
-            "pand  %%mm4, %%mm1          \n\t" // clear invalid bit 7 of each byte
-            "paddb %%mm1, %%mm0          \n\t" // add (Prev_row/2) to Avg for each byte
+            "pand  %%mm4, %%mm1          \n\t" // clear invalid bit 7 of each
+                                               // byte
+            "paddb %%mm1, %%mm0          \n\t" // add (Prev_row/2) to Avg for
+                                               // each byte
             // add 1st active group (Raw(x-bpp)/2) to average with _LBCarry
-            "movq %%mm3, %%mm1           \n\t" // now use mm1 for getting LBCarrys
-            "pand %%mm2, %%mm1           \n\t" // get LBCarrys for each byte where both
+            "movq %%mm3, %%mm1           \n\t" // now use mm1 for getting
+                                               // LBCarrys
+            "pand %%mm2, %%mm1           \n\t" // get LBCarrys for each byte
+                                               // where both
                               // lsb's were == 1 (only valid for active group)
             "psrlq $1, %%mm2             \n\t" // divide raw bytes by 2
-            "pand  %%mm4, %%mm2          \n\t" // clear invalid bit 7 of each byte
-            "paddb %%mm1, %%mm2          \n\t" // add LBCarrys to (Raw(x-bpp)/2) for each byte
-            "pand %%mm7, %%mm2           \n\t" // leave only Active Group 1 bytes to add to Avg
-            "paddb %%mm2, %%mm0          \n\t" // add (Raw/2) + LBCarrys to Avg for each Active
+            "pand  %%mm4, %%mm2          \n\t" // clear invalid bit 7 of each
+                                               // byte
+            "paddb %%mm1, %%mm2          \n\t" // add LBCarrys to (Raw(x-bpp)/2)
+                                               // for each byte
+            "pand %%mm7, %%mm2           \n\t" // leave only Active Group 1
+                                               // bytes to add to Avg
+            "paddb %%mm2, %%mm0          \n\t" // add (Raw/2) + LBCarrys to Avg
+                                               // for each Active
                               // byte
             // add 2nd active group (Raw(x-bpp)/2) to average with _LBCarry
             "movq %%mm0, %%mm2           \n\t" // mov updated Raws to mm2
             "psllq _ShiftBpp, %%mm2      \n\t" // shift data to pos. correctly
             "addl $8, %%ecx              \n\t"
-            "movq %%mm3, %%mm1           \n\t" // now use mm1 for getting LBCarrys
-            "pand %%mm2, %%mm1           \n\t" // get LBCarrys for each byte where both
+            "movq %%mm3, %%mm1           \n\t" // now use mm1 for getting
+                                               // LBCarrys
+            "pand %%mm2, %%mm1           \n\t" // get LBCarrys for each byte
+                                               // where both
                               // lsb's were == 1 (only valid for active group)
             "psrlq $1, %%mm2             \n\t" // divide raw bytes by 2
-            "pand  %%mm4, %%mm2          \n\t" // clear invalid bit 7 of each byte
-            "paddb %%mm1, %%mm2          \n\t" // add LBCarrys to (Raw(x-bpp)/2) for each byte
-            "pand %%mm6, %%mm2           \n\t" // leave only Active Group 2 bytes to add to Avg
-            "paddb %%mm2, %%mm0          \n\t" // add (Raw/2) + LBCarrys to Avg for each Active
+            "pand  %%mm4, %%mm2          \n\t" // clear invalid bit 7 of each
+                                               // byte
+            "paddb %%mm1, %%mm2          \n\t" // add LBCarrys to (Raw(x-bpp)/2)
+                                               // for each byte
+            "pand %%mm6, %%mm2           \n\t" // leave only Active Group 2
+                                               // bytes to add to Avg
+            "paddb %%mm2, %%mm0          \n\t" // add (Raw/2) + LBCarrys to
+                                               // Avg for each Active
                               // byte
             "cmpl _MMXLength, %%ecx      \n\t"
             // now ready to write back to memory
@@ -3012,7 +3051,8 @@
             // load _ActiveMask
             "movq _ActiveMask, %%mm7     \n\t"
             // re-init address pointers and offset
-            "movl _dif, %%ecx            \n\t" // ecx:  x = offset to alignment boundary
+            "movl _dif, %%ecx            \n\t" // ecx:  x = offset to alignment
+                                               // boundary
             "movq _LBCarryMask, %%mm5    \n\t"
 // preload  "movl row, %%edi             \n\t" // edi:  Avg(x)
             "movq _HBClearMask, %%mm4    \n\t"
@@ -3029,59 +3069,91 @@
             "movq %%mm5, %%mm3           \n\t"
             "pand %%mm1, %%mm3           \n\t" // get lsb for each prev_row byte
             "psrlq $1, %%mm1             \n\t" // divide prev_row bytes by 2
-            "pand  %%mm4, %%mm1          \n\t" // clear invalid bit 7 of each byte
+            "pand  %%mm4, %%mm1          \n\t" // clear invalid bit 7 of each
+                                               // byte
             "movq %%mm7, %%mm6           \n\t"
-            "paddb %%mm1, %%mm0          \n\t" // add (Prev_row/2) to Avg for each byte
+            "paddb %%mm1, %%mm0          \n\t" // add (Prev_row/2) to Avg for
+                                               // each byte
 
             // add 1st active group (Raw(x-bpp)/2) to average with _LBCarry
-            "movq %%mm3, %%mm1           \n\t" // now use mm1 for getting LBCarrys
-            "pand %%mm2, %%mm1           \n\t" // get LBCarrys for each byte where both
-                                               // lsb's were == 1 (only valid for active group)
+            "movq %%mm3, %%mm1           \n\t" // now use mm1 for getting
+                                               // LBCarrys
+            "pand %%mm2, %%mm1           \n\t" // get LBCarrys for each byte
+                                               // where both
+                                               // lsb's were == 1 (only valid
+                                               // for active group)
             "psrlq $1, %%mm2             \n\t" // divide raw bytes by 2
-            "pand  %%mm4, %%mm2          \n\t" // clear invalid bit 7 of each byte
-            "paddb %%mm1, %%mm2          \n\t" // add LBCarrys to (Raw(x-bpp)/2) for each byte
-            "pand %%mm6, %%mm2           \n\t" // leave only Active Group 1 bytes to add to Avg
-            "paddb %%mm2, %%mm0          \n\t" // add (Raw/2) + LBCarrys to Avg for each Active byte
+            "pand  %%mm4, %%mm2          \n\t" // clear invalid bit 7 of each
+                                               // byte
+            "paddb %%mm1, %%mm2          \n\t" // add LBCarrys to (Raw(x-bpp)/2)
+                                               // for each byte
+            "pand %%mm6, %%mm2           \n\t" // leave only Active Group 1
+                                               // bytes to add to Avg
+            "paddb %%mm2, %%mm0          \n\t" // add (Raw/2) + LBCarrys to Avg
+                                               // for each Active byte
 
             // add 2nd active group (Raw(x-bpp)/2) to average with _LBCarry
-            "psllq _ShiftBpp, %%mm6      \n\t" // shift the mm6 mask to cover bytes 2 & 3
+            "psllq _ShiftBpp, %%mm6      \n\t" // shift the mm6 mask to cover
+                                               // bytes 2 & 3
             "movq %%mm0, %%mm2           \n\t" // mov updated Raws to mm2
             "psllq _ShiftBpp, %%mm2      \n\t" // shift data to pos. correctly
-            "movq %%mm3, %%mm1           \n\t" // now use mm1 for getting LBCarrys
-            "pand %%mm2, %%mm1           \n\t" // get LBCarrys for each byte where both
-                                               // lsb's were == 1 (only valid for active group)
+            "movq %%mm3, %%mm1           \n\t" // now use mm1 for getting
+                                               // LBCarrys
+            "pand %%mm2, %%mm1           \n\t" // get LBCarrys for each byte
+                                               // where both
+                                               // lsb's were == 1 (only valid
+                                               // for active group)
             "psrlq $1, %%mm2             \n\t" // divide raw bytes by 2
-            "pand  %%mm4, %%mm2          \n\t" // clear invalid bit 7 of each byte
-            "paddb %%mm1, %%mm2          \n\t" // add LBCarrys to (Raw(x-bpp)/2) for each byte
-            "pand %%mm6, %%mm2           \n\t" // leave only Active Group 2 bytes to add to Avg
-            "paddb %%mm2, %%mm0          \n\t" // add (Raw/2) + LBCarrys to Avg for each Active byte
+            "pand  %%mm4, %%mm2          \n\t" // clear invalid bit 7 of each
+                                               // byte
+            "paddb %%mm1, %%mm2          \n\t" // add LBCarrys to (Raw(x-bpp)/2)
+                                               // for each byte
+            "pand %%mm6, %%mm2           \n\t" // leave only Active Group 2
+                                               // bytes to add to Avg
+            "paddb %%mm2, %%mm0          \n\t" // add (Raw/2) + LBCarrys to
+                                               // Avg for each Active byte
 
             // add 3rd active group (Raw(x-bpp)/2) to average with _LBCarry
-            "psllq _ShiftBpp, %%mm6      \n\t" // shift the mm6 mask to cover bytes 4 & 5
+            "psllq _ShiftBpp, %%mm6      \n\t" // shift the mm6 mask to cover
+                                               // bytes 4 & 5
             "movq %%mm0, %%mm2           \n\t" // mov updated Raws to mm2
             "psllq _ShiftBpp, %%mm2      \n\t" // shift data to pos. correctly
-            "movq %%mm3, %%mm1           \n\t" // now use mm1 for getting LBCarrys
-            "pand %%mm2, %%mm1           \n\t" // get LBCarrys for each byte where both
-                                               // lsb's were == 1 (only valid for active group)
+            "movq %%mm3, %%mm1           \n\t" // now use mm1 for getting
+                                               // LBCarrys
+            "pand %%mm2, %%mm1           \n\t" // get LBCarrys for each byte
+                                               // where both lsb's were == 1
+                                               // (only valid for active group)
             "psrlq $1, %%mm2             \n\t" // divide raw bytes by 2
-            "pand  %%mm4, %%mm2          \n\t" // clear invalid bit 7 of each byte
-            "paddb %%mm1, %%mm2          \n\t" // add LBCarrys to (Raw(x-bpp)/2) for each byte
-            "pand %%mm6, %%mm2           \n\t" // leave only Active Group 2 bytes to add to Avg
-            "paddb %%mm2, %%mm0          \n\t" // add (Raw/2) + LBCarrys to Avg for each Active byte
+            "pand  %%mm4, %%mm2          \n\t" // clear invalid bit 7 of each
+                                               // byte
+            "paddb %%mm1, %%mm2          \n\t" // add LBCarrys to (Raw(x-bpp)/2)
+                                               // for each byte
+            "pand %%mm6, %%mm2           \n\t" // leave only Active Group 2
+                                               // bytes to add to Avg
+            "paddb %%mm2, %%mm0          \n\t" // add (Raw/2) + LBCarrys to
+                                               // Avg for each Active byte
 
             // add 4th active group (Raw(x-bpp)/2) to average with _LBCarry
-            "psllq _ShiftBpp, %%mm6      \n\t" // shift the mm6 mask to cover bytes 6 & 7
+            "psllq _ShiftBpp, %%mm6      \n\t" // shift the mm6 mask to cover
+                                               // bytes 6 & 7
             "movq %%mm0, %%mm2           \n\t" // mov updated Raws to mm2
             "psllq _ShiftBpp, %%mm2      \n\t" // shift data to pos. correctly
             "addl $8, %%ecx              \n\t"
-            "movq %%mm3, %%mm1           \n\t" // now use mm1 for getting LBCarrys
-            "pand %%mm2, %%mm1           \n\t" // get LBCarrys for each byte where both
-                                               // lsb's were == 1 (only valid for active group)
+            "movq %%mm3, %%mm1           \n\t" // now use mm1 for getting
+                                               // LBCarrys
+            "pand %%mm2, %%mm1           \n\t" // get LBCarrys for each byte
+                                               // where both
+                                               // lsb's were == 1 (only valid
+                                               // for active group)
             "psrlq $1, %%mm2             \n\t" // divide raw bytes by 2
-            "pand  %%mm4, %%mm2          \n\t" // clear invalid bit 7 of each byte
-            "paddb %%mm1, %%mm2          \n\t" // add LBCarrys to (Raw(x-bpp)/2) for each byte
-            "pand %%mm6, %%mm2           \n\t" // leave only Active Group 2 bytes to add to Avg
-            "paddb %%mm2, %%mm0          \n\t" // add (Raw/2) + LBCarrys to Avg for each Active byte
+            "pand  %%mm4, %%mm2          \n\t" // clear invalid bit 7 of each
+                                               // byte
+            "paddb %%mm1, %%mm2          \n\t" // add LBCarrys to (Raw(x-bpp)/2)
+                                               // for each byte
+            "pand %%mm6, %%mm2           \n\t" // leave only Active Group 2
+                                               // bytes to add to Avg
+            "paddb %%mm2, %%mm0          \n\t" // add (Raw/2) + LBCarrys to
+                                               // Avg for each Active byte
 
             "cmpl _MMXLength, %%ecx      \n\t"
             // now ready to write back to memory
@@ -3112,7 +3184,8 @@
 #ifdef __PIC__
             "pushl %%ebx                 \n\t" // save Global Offset Table index
 #endif
-            "movl _dif, %%ebx            \n\t" // ebx:  x = offset to alignment boundary
+            "movl _dif, %%ebx            \n\t" // ebx:  x = offset to alignment
+                                               // boundary
 // preload  "movl row, %%edi             \n\t" // edi:  Avg(x)
             "cmpl _FullLength, %%ebx     \n\t" // test if offset at end of array
             "jnb avg_1end                \n\t"
@@ -3131,7 +3204,8 @@
             "addw %%cx, %%ax             \n\t"
             "incl %%ebx                  \n\t"
             "shrw %%ax                   \n\t" // divide by 2
-            "addb -1(%%edi,%%ebx,), %%al \n\t" // add Avg(x); -1 to offset inc ebx
+            "addb -1(%%edi,%%ebx,), %%al \n\t" // add Avg(x); -1 to offset
+                                               // inc ebx
             "cmpl _FullLength, %%ebx     \n\t" // check if at end of array
             "movb %%al, -1(%%edi,%%ebx,) \n\t" // write back Raw(x);
                          // mov does not affect flags; -1 to offset inc ebx
@@ -3210,15 +3284,18 @@
       default:                  // bpp greater than 8 (!= 1,2,3,4,[5],6,[7],8)
       {
 
+#ifdef PNG_DEBUG
          // GRR:  PRINT ERROR HERE:  SHOULD NEVER BE REACHED
-        png_warning(png_ptr,
-          "Internal logic error in pnggccrd (png_read_filter_row_mmx_avg())");
+        png_debug(1,
+        "Internal logic error in pnggccrd (png_read_filter_row_mmx_avg())\n");
+#endif
 
 #if 0
         __asm__ __volatile__ (
             "movq _LBCarryMask, %%mm5    \n\t"
             // re-init address pointers and offset
-            "movl _dif, %%ebx            \n\t" // ebx:  x = offset to alignment boundary
+            "movl _dif, %%ebx            \n\t" // ebx:  x = offset to
+                                               // alignment boundary
             "movl row, %%edi             \n\t" // edi:  Avg(x)
             "movq _HBClearMask, %%mm4    \n\t"
             "movl %%edi, %%edx           \n\t"
@@ -3231,15 +3308,20 @@
             "pand %%mm1, %%mm3           \n\t" // get lsb for each prev_row byte
             "movq (%%edx,%%ebx,), %%mm2  \n\t"
             "psrlq $1, %%mm1             \n\t" // divide prev_row bytes by 2
-            "pand %%mm2, %%mm3           \n\t" // get LBCarrys for each byte where both
-                                // lsb's were == 1
+            "pand %%mm2, %%mm3           \n\t" // get LBCarrys for each byte
+                                               // where both lsb's were == 1
             "psrlq $1, %%mm2             \n\t" // divide raw bytes by 2
-            "pand  %%mm4, %%mm1          \n\t" // clear invalid bit 7 of each byte
-            "paddb %%mm3, %%mm0          \n\t" // add LBCarrys to Avg for each byte
-            "pand  %%mm4, %%mm2          \n\t" // clear invalid bit 7 of each byte
-            "paddb %%mm1, %%mm0          \n\t" // add (Prev_row/2) to Avg for each byte
+            "pand  %%mm4, %%mm1          \n\t" // clear invalid bit 7 of each
+                                               // byte
+            "paddb %%mm3, %%mm0          \n\t" // add LBCarrys to Avg for each
+                                               // byte
+            "pand  %%mm4, %%mm2          \n\t" // clear invalid bit 7 of each
+                                               // byte
+            "paddb %%mm1, %%mm0          \n\t" // add (Prev_row/2) to Avg for
+                                               // each byte
             "addl $8, %%ebx              \n\t"
-            "paddb %%mm2, %%mm0          \n\t" // add (Raw/2) to Avg for each byte
+            "paddb %%mm2, %%mm0          \n\t" // add (Raw/2) to Avg for each
+                                               // byte
             "cmpl _MMXLength, %%ebx      \n\t"
             "movq %%mm0, -8(%%edi,%%ebx,) \n\t"
             "jb avg_Alp                  \n\t"
@@ -3358,9 +3440,11 @@
       "movl %%edi, _dif            \n\t" // take start of row
       "addl %%ebx, _dif            \n\t" // add bpp
       "xorl %%ecx, %%ecx           \n\t"
-      "addl $0xf, _dif             \n\t" // add 7 + 8 to incr past alignment boundary
+      "addl $0xf, _dif             \n\t" // add 7 + 8 to incr past alignment
+                                         // boundary
       "andl $0xfffffff8, _dif      \n\t" // mask to alignment boundary
-      "subl %%edi, _dif            \n\t" // subtract from start ==> value ebx at alignment
+      "subl %%edi, _dif            \n\t" // subtract from start ==> value ebx
+                                         // at alignment
       "jz paeth_go                 \n\t"
       // fix alignment
 
@@ -3478,12 +3562,14 @@
             // prime the pump:  load the first Raw(x-bpp) data set
             "movq -8(%%edi,%%ecx,), %%mm1 \n\t"
          "paeth_3lp:                     \n\t"
-            "psrlq _ShiftRem, %%mm1      \n\t" // shift last 3 bytes to 1st 3 bytes
+            "psrlq _ShiftRem, %%mm1      \n\t" // shift last 3 bytes to 1st
+                                               // 3 bytes
             "movq (%%esi,%%ecx,), %%mm2  \n\t" // load b=Prior(x)
             "punpcklbw %%mm0, %%mm1      \n\t" // unpack High bytes of a
             "movq -8(%%esi,%%ecx,), %%mm3 \n\t" // prep c=Prior(x-bpp) bytes
             "punpcklbw %%mm0, %%mm2      \n\t" // unpack High bytes of b
-            "psrlq _ShiftRem, %%mm3      \n\t" // shift last 3 bytes to 1st 3 bytes
+            "psrlq _ShiftRem, %%mm3      \n\t" // shift last 3 bytes to 1st
+                                               // 3 bytes
             // pav = p - a = (a + b - c) - a = b - c
             "movq %%mm2, %%mm4           \n\t"
             "punpcklbw %%mm0, %%mm3      \n\t" // unpack High bytes of c
@@ -3538,7 +3624,8 @@
             "paddb (%%edi,%%ecx,), %%mm7 \n\t" // add Paeth predictor with Raw(x)
             "punpcklbw %%mm0, %%mm3      \n\t" // unpack High bytes of c
             "movq %%mm7, (%%edi,%%ecx,)  \n\t" // write back updated value
-            "movq %%mm7, %%mm1           \n\t" // now mm1 will be used as Raw(x-bpp)
+            "movq %%mm7, %%mm1           \n\t" // now mm1 will be used as
+                                               // Raw(x-bpp)
             // now do Paeth for 2nd set of bytes (3-5)
             "psrlq _ShiftBpp, %%mm2      \n\t" // load b=Prior(x) step 2
             "punpcklbw %%mm0, %%mm1      \n\t" // unpack High bytes of a
@@ -3595,7 +3682,8 @@
             "movq %%mm2, %%mm3           \n\t" // load c=Prior(x-bpp) step 1
             "pand _ActiveMask, %%mm7     \n\t"
             "punpckhbw %%mm0, %%mm2      \n\t" // unpack High bytes of b
-            "psllq _ShiftBpp, %%mm7      \n\t" // shift bytes to 2nd group of 3 bytes
+            "psllq _ShiftBpp, %%mm7      \n\t" // shift bytes to 2nd group of
+                                               // 3 bytes
              // pav = p - a = (a + b - c) - a = b - c
             "movq %%mm2, %%mm4           \n\t"
             "paddb (%%edi,%%ecx,), %%mm7 \n\t" // add Paeth predictor with Raw(x)
@@ -3655,7 +3743,8 @@
             // step ecx to next set of 8 bytes and repeat loop til done
             "addl $8, %%ecx              \n\t"
             "pand _ActiveMaskEnd, %%mm1  \n\t"
-            "paddb -8(%%edi,%%ecx,), %%mm1 \n\t" // add Paeth predictor with Raw(x)
+            "paddb -8(%%edi,%%ecx,), %%mm1 \n\t" // add Paeth predictor with
+                                                 // Raw(x)
 
             "cmpl _MMXLength, %%ecx      \n\t"
             "pxor %%mm0, %%mm0           \n\t" // pxor does not affect flags
diff --git a/pngget.c b/pngget.c
index 2b53522..c34eaf7 100644
--- a/pngget.c
+++ b/pngget.c
@@ -1,7 +1,7 @@
 
 /* pngget.c - retrieval of values from info struct
  *
- * libpng 1.2.0beta5 - August 8, 2001
+ * libpng 1.2.0rc1 - August 25, 2001
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2001 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
diff --git a/pngmem.c b/pngmem.c
index 6e6edf5..27832e1 100644
--- a/pngmem.c
+++ b/pngmem.c
@@ -1,7 +1,7 @@
 
 /* pngmem.c - stub functions for memory allocation
  *
- * libpng 1.2.0beta5 - August 8, 2001
+ * libpng 1.2.0rc1 - August 25, 2001
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2001 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
diff --git a/pngpread.c b/pngpread.c
index e57a357..b5139c1 100644
--- a/pngpread.c
+++ b/pngpread.c
@@ -1,7 +1,7 @@
 
 /* pngpread.c - read a png file in push mode
  *
- * libpng 1.2.0beta5 - August 8, 2001
+ * libpng 1.2.0rc1 - August 25, 2001
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2001 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
diff --git a/pngread.c b/pngread.c
index 94a1da5..0daabba 100644
--- a/pngread.c
+++ b/pngread.c
@@ -1,7 +1,7 @@
 
 /* pngread.c - read a PNG file
  *
- * libpng 1.2.0beta5 - August 8, 2001
+ * libpng 1.2.0rc1 - August 25, 2001
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2001 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -769,7 +769,7 @@
  * not called png_set_interlace_handling(), the display_row buffer will
  * be ignored, so pass NULL to it.
  *
- * [*] png_handle_alpha() does not exist yet, as of libpng version 1.2.0beta5
+ * [*] png_handle_alpha() does not exist yet, as of libpng version 1.2.0rc1
  */
 
 void PNGAPI
@@ -818,7 +818,7 @@
  * only call this function once.  If you desire to have an image for
  * each pass of a interlaced image, use png_read_rows() instead.
  *
- * [*] png_handle_alpha() does not exist yet, as of libpng version 1.2.0beta5
+ * [*] png_handle_alpha() does not exist yet, as of libpng version 1.2.0rc1
  */
 void PNGAPI
 png_read_image(png_structp png_ptr, png_bytepp image)
@@ -1133,7 +1133,7 @@
       png_info_destroy(png_ptr, end_info_ptr);
 
    png_free(png_ptr, png_ptr->zbuf);
-   png_free(png_ptr, png_ptr->row_buf);
+   png_free(png_ptr, png_ptr->big_row_buf);
    png_free(png_ptr, png_ptr->prev_row);
 #if defined(PNG_READ_DITHER_SUPPORTED)
    png_free(png_ptr, png_ptr->palette_lookup);
diff --git a/pngrio.c b/pngrio.c
index 633b6c3..64cb5da 100644
--- a/pngrio.c
+++ b/pngrio.c
@@ -1,7 +1,7 @@
 
 /* pngrio.c - functions for data input
  *
- * libpng 1.2.0beta5 - August 8, 2001
+ * libpng 1.2.0rc1 - August 25, 2001
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2001 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
diff --git a/pngrtran.c b/pngrtran.c
index 29a534e..18e943d 100644
--- a/pngrtran.c
+++ b/pngrtran.c
@@ -1,7 +1,7 @@
 
 /* pngrtran.c - transforms the data in a row for PNG readers
  *
- * libpng 1.2.0beta5 - August 8, 2001
+ * libpng 1.2.0rc1 - August 25, 2001
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2001 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
diff --git a/pngrutil.c b/pngrutil.c
index c39c701..d55fec3 100644
--- a/pngrutil.c
+++ b/pngrutil.c
@@ -1,7 +1,7 @@
 
 /* pngrutil.c - utilities to read a PNG file
  *
- * libpng 1.2.0beta5 - August 8, 2001
+ * libpng 1.2.0rc1 - August 25, 2001
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2001 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -2975,7 +2975,8 @@
    if (row_bytes > (png_uint_32)65536L)
       png_error(png_ptr, "This image requires a row greater than 64KB");
 #endif
-   png_ptr->row_buf = (png_bytep)png_malloc(png_ptr, row_bytes);
+   png_ptr->big_row_buf = (png_bytep)png_malloc(png_ptr, row_bytes+64);
+   png_ptr->row_buf = png_ptr->big_row_buf+32;
 #if defined(PNG_DEBUG) && defined(PNG_USE_PNGGCCRD)
    png_ptr->row_buf_size = row_bytes;
 #endif
diff --git a/pngset.c b/pngset.c
index 2aba58e..0907389 100644
--- a/pngset.c
+++ b/pngset.c
@@ -1,7 +1,7 @@
 
 /* pngset.c - storage of image information into info struct
  *
- * libpng 1.2.0beta5 - August 8, 2001
+ * libpng 1.2.0rc1 - August 25, 2001
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2001 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
diff --git a/pngtest.c b/pngtest.c
index 46c6c3a..c67fb30 100644
--- a/pngtest.c
+++ b/pngtest.c
@@ -1,7 +1,7 @@
 
 /* pngtest.c - a simple test program to test libpng
  *
- * libpng 1.2.0beta5 - August 8, 2001
+ * libpng 1.2.0rc1 - August 25, 2001
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2001 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -1510,4 +1510,4 @@
 }
 
 /* Generate a compiler error if there is an old png.h in the search path. */
-typedef version_1_2_0beta5 your_png_h_is_not_version_1_2_0beta5;
+typedef version_1_2_0rc1 your_png_h_is_not_version_1_2_0rc1;
diff --git a/pngtrans.c b/pngtrans.c
index 359c988..e9df79d 100644
--- a/pngtrans.c
+++ b/pngtrans.c
@@ -1,7 +1,7 @@
 
 /* pngtrans.c - transforms the data in a row (used by both readers and writers)
  *
- * libpng 1.2.0beta5 - August 8, 2001
+ * libpng 1.2.0rc1 - August 25, 2001
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2001 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
diff --git a/pngvcrd.c b/pngvcrd.c
index 2b6248a..c89283e 100644
--- a/pngvcrd.c
+++ b/pngvcrd.c
@@ -2,7 +2,7 @@
  *
  * For Intel x86 CPU and Microsoft Visual C++ compiler
  *
- * libpng 1.2.0beta5 - August 8, 2001
+ * libpng 1.2.0rc1 - August 25, 2001
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2001 Glenn Randers-Pehrson
  * Copyright (c) 1998, Intel Corporation
diff --git a/pngwio.c b/pngwio.c
index 5854b37..007ac7b 100644
--- a/pngwio.c
+++ b/pngwio.c
@@ -1,7 +1,7 @@
 
 /* pngwio.c - functions for data output
  *
- * libpng 1.2.0beta5 - August 8, 2001
+ * libpng 1.2.0rc1 - August 25, 2001
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2001 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
diff --git a/pngwrite.c b/pngwrite.c
index f248f43..d1b341b 100644
--- a/pngwrite.c
+++ b/pngwrite.c
@@ -1,7 +1,7 @@
 
 /* pngwrite.c - general routines to write a PNG file
  *
- * libpng 1.2.0beta5 - August 8, 2001
+ * libpng 1.2.0rc1 - August 25, 2001
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2001 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
diff --git a/pngwtran.c b/pngwtran.c
index 3227d8f..b00d3a5 100644
--- a/pngwtran.c
+++ b/pngwtran.c
@@ -1,7 +1,7 @@
 
 /* pngwtran.c - transforms the data in a row for PNG writers
  *
- * libpng 1.2.0beta5 - August 8, 2001
+ * libpng 1.2.0rc1 - August 25, 2001
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2001 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
diff --git a/pngwutil.c b/pngwutil.c
index 68bb9a4..13f7dc4 100644
--- a/pngwutil.c
+++ b/pngwutil.c
@@ -1,7 +1,7 @@
 
 /* pngwutil.c - utilities to write a PNG file
  *
- * libpng 1.2.0beta5 - August 8, 2001
+ * libpng 1.2.0rc1 - August 25, 2001
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2001 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
diff --git a/projects/msvc/README.txt b/projects/msvc/README.txt
index b5f402e..cb03269 100644
--- a/projects/msvc/README.txt
+++ b/projects/msvc/README.txt
@@ -1,5 +1,5 @@
 Microsoft Developer Studio Build File, Format Version 6.00 for
-libpng 1.2.0beta5 (August 8, 2001) and zlib
+libpng 1.2.0rc1 (August 25, 2001) and zlib
 
 Copyright (C) 2000 Simon-Pierre Cadieux
 For conditions of distribution and use, see copyright notice in png.h
diff --git a/projects/msvc/png32ms.def b/projects/msvc/png32ms.def
index fcb237a..1017305 100644
--- a/projects/msvc/png32ms.def
+++ b/projects/msvc/png32ms.def
@@ -6,7 +6,7 @@
 DESCRIPTION "PNG image compression library for Windows"
 
 EXPORTS
-;Version 1.2.0beta5
+;Version 1.2.0rc1
   png_build_grayscale_palette  @1
   png_check_sig        @2
   png_chunk_error      @3
diff --git a/projects/netware.txt b/projects/netware.txt
index d366901..ddab5f2 100644
--- a/projects/netware.txt
+++ b/projects/netware.txt
@@ -1,6 +1,6 @@
 A set of project files is available for Netware.  Get
-libpng-1.2.0beta5-project-netware.zip from a libpng distribution
+libpng-1.2.0rc1-project-netware.zip from a libpng distribution
 site such as http://libpng.sourceforge.net
 
 Put the zip file in this directory (projects) and then run
-"unzip -a libpng-1.2.0beta5-project-netware.zip"
+"unzip -a libpng-1.2.0rc1-project-netware.zip"
diff --git a/projects/wince.txt b/projects/wince.txt
index 145ee1c..c812b13 100644
--- a/projects/wince.txt
+++ b/projects/wince.txt
@@ -1,6 +1,6 @@
 A set of project files is available for WinCE.  Get
-libpng-1.2.0beta5-project-wince.zip from a libpng distribution
+libpng-1.2.0rc1-project-wince.zip from a libpng distribution
 site such as http://libpng.sourceforge.net
 
 Put the zip file in this directory (projects) and then run
-"unzip -a libpng-1.2.0beta5-project-wince.zip"
+"unzip -a libpng-1.2.0rc1-project-wince.zip"
diff --git a/scripts/makefile.aix b/scripts/makefile.aix
index d15a76d..a820a4c 100644
--- a/scripts/makefile.aix
+++ b/scripts/makefile.aix
@@ -18,7 +18,7 @@
 # read libpng.txt or png.h to see why PNGMAJ is 3.  You should not
 # have to change it.
 PNGMAJ = 3
-PNGMIN = 1.2.0beta5
+PNGMIN = 1.2.0rc1
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 prefix=/usr/local
diff --git a/scripts/makefile.beos b/scripts/makefile.beos
index 269f8e3..35f5ff0 100644
--- a/scripts/makefile.beos
+++ b/scripts/makefile.beos
@@ -13,7 +13,7 @@
 # read libpng.txt or png.h to see why PNGMAJ is 3.  You should not
 # have to change it.
 PNGMAJ = 3
-PNGMIN = 1.2.0beta5
+PNGMIN = 1.2.0rc1
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 ALIGN=
diff --git a/scripts/makefile.cygwin b/scripts/makefile.cygwin
index b583a97..bdf2f44 100644
--- a/scripts/makefile.cygwin
+++ b/scripts/makefile.cygwin
@@ -39,7 +39,7 @@
 # have to change it.
 PNGMAJ = 3
 #PNGDLL = $3
-PNGMIN = 1.2.0beta5
+PNGMIN = 1.2.0rc1
 PNGMIN_BASE = 1.2.0
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
diff --git a/scripts/makefile.dec b/scripts/makefile.dec
index 0ed4c0c..50943d5 100644
--- a/scripts/makefile.dec
+++ b/scripts/makefile.dec
@@ -17,7 +17,7 @@
 # read libpng.txt or png.h to see why PNGMAJ is 3.  You should not
 # have to change it.
 PNGMAJ = 3
-PNGMIN = 1.2.0beta5
+PNGMIN = 1.2.0rc1
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 CC=cc
diff --git a/scripts/makefile.gcmmx b/scripts/makefile.gcmmx
index 48a552c..1df3703 100644
--- a/scripts/makefile.gcmmx
+++ b/scripts/makefile.gcmmx
@@ -55,7 +55,7 @@
 # read libpng.txt or png.h to see why PNGMAJ is 3.  You should not
 # have to change it.
 PNGMAJ = 3
-PNGMIN = 1.2.0beta5
+PNGMIN = 1.2.0rc1
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 INCPATH=$(prefix)/include
diff --git a/scripts/makefile.hpgcc b/scripts/makefile.hpgcc
index fad250b..74eea56 100644
--- a/scripts/makefile.hpgcc
+++ b/scripts/makefile.hpgcc
@@ -34,7 +34,7 @@
 # read libpng.txt or png.h to see why PNGMAJ is 3.  You should not
 # have to change it.
 PNGMAJ = 3
-PNGMIN = 1.2.0beta5
+PNGMIN = 1.2.0rc1
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 INCPATH=$(prefix)/include
diff --git a/scripts/makefile.hpux b/scripts/makefile.hpux
index 80f2eb7..1c9b088 100644
--- a/scripts/makefile.hpux
+++ b/scripts/makefile.hpux
@@ -19,7 +19,7 @@
 # read libpng.txt or png.h to see why PNGMAJ is 3.  You should not
 # have to change it.
 PNGMAJ = 3
-PNGMIN = 1.2.0beta5
+PNGMIN = 1.2.0rc1
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # where make install puts libpng.a and png.h
diff --git a/scripts/makefile.linux b/scripts/makefile.linux
index 73f1612..dae1adf 100644
--- a/scripts/makefile.linux
+++ b/scripts/makefile.linux
@@ -34,7 +34,7 @@
 # read libpng.txt or png.h to see why PNGMAJ is 3.  You should not
 # have to change it.
 PNGMAJ = 3
-PNGMIN = 1.2.0beta5
+PNGMIN = 1.2.0rc1
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 INCPATH=$(prefix)/include
diff --git a/scripts/makefile.netbsd b/scripts/makefile.netbsd
index 08b2fad..8a9aa27 100644
--- a/scripts/makefile.netbsd
+++ b/scripts/makefile.netbsd
@@ -11,7 +11,7 @@
 
 LIB=png
 SHLIB_MAJOR= 3
-SHLIB_MINOR= 1.2.0beta5
+SHLIB_MINOR= 1.2.0rc1
 SRCS=	pnggccrd.c png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \
 	pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
 	pngwtran.c pngmem.c pngerror.c pngpread.c
diff --git a/scripts/makefile.sco b/scripts/makefile.sco
index d810e98..0129abf 100644
--- a/scripts/makefile.sco
+++ b/scripts/makefile.sco
@@ -25,7 +25,7 @@
 # read libpng.txt or png.h to see why PNGMAJ is 3.  You should not
 # have to change it.
 PNGMAJ = 3
-PNGMIN = 1.2.0beta5
+PNGMIN = 1.2.0rc1
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 INCPATH=$(prefix)/include
diff --git a/scripts/makefile.sggcc b/scripts/makefile.sggcc
index e030915..ff1a8a9 100644
--- a/scripts/makefile.sggcc
+++ b/scripts/makefile.sggcc
@@ -22,7 +22,7 @@
 LDFLAGS=$(ABI) -L. -L$(ZLIBLIB) -lpng -lz -lm
 LDSHARED=CC $(ABI) -shared
 
-VER=1.2.0beta5
+VER=1.2.0rc1
 # See "man dso" for info about shared objects
 SONUM=3
 LIBS=libpng.so.$(SONUM).$(VER)
diff --git a/scripts/makefile.sgi b/scripts/makefile.sgi
index 2fc40bd..959c060 100644
--- a/scripts/makefile.sgi
+++ b/scripts/makefile.sgi
@@ -27,7 +27,7 @@
 LDFLAGS=$(ABI) -L. -L$(ZLIBLIB) -lpng -lz -lm
 LDSHARED=cc $(ABI) -shared
 
-VER=1.2.0beta5
+VER=1.2.0rc1
 # See "man dso" for info about shared objects
 SONUM=3
 SHAREDLIB=libpng.so
diff --git a/scripts/makefile.solaris b/scripts/makefile.solaris
index 9fa9270..8fa57b1 100644
--- a/scripts/makefile.solaris
+++ b/scripts/makefile.solaris
@@ -31,7 +31,7 @@
 # read libpng.txt or png.h to see why PNGMAJ is 3.  You should not
 # have to change it.
 PNGMAJ = 3
-PNGMIN = 1.2.0beta5
+PNGMIN = 1.2.0rc1
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 INCPATH=$(prefix)/include
diff --git a/scripts/pngdef.pas b/scripts/pngdef.pas
index 7f9c59e..239fc7f 100644
--- a/scripts/pngdef.pas
+++ b/scripts/pngdef.pas
@@ -7,7 +7,7 @@
 interface
 
 const
-  PNG_LIBPNG_VER_STRING = '1.2.0beta5';
+  PNG_LIBPNG_VER_STRING = '1.2.0rc1';
   PNG_LIBPNG_VER        =  10200;
 
 type
diff --git a/scripts/pngos2.def b/scripts/pngos2.def
index 8602581..6b849bc 100644
--- a/scripts/pngos2.def
+++ b/scripts/pngos2.def
@@ -2,7 +2,7 @@
 ; PNG.LIB module definition file for OS/2
 ;----------------------------------------
 
-; Version 1.2.0beta5
+; Version 1.2.0rc1
 
 LIBRARY		PNG
 DESCRIPTION	"PNG image compression library for OS/2"