diff -ru4NwbB libpng-1.4.4/configure.ac libpng-1.4.5beta04/configure.ac
--- libpng-1.4.4/configure.ac	2010-09-23 07:18:40.435665492 -0500
+++ libpng-1.4.5beta04/configure.ac	2010-11-08 12:42:03.245892112 -0600
@@ -15,20 +15,20 @@
 dnl should not be necessary to regenerate configure if the time
 dnl stamps are correct
 AC_PREREQ(2.59)
 
+AC_INIT([libpng], [1.4.5beta04], [png-mng-implement@lists.sourceforge.net])
+AM_INIT_AUTOMAKE
+dnl stop configure from automagically running automake
+AM_MAINTAINER_MODE
+
 dnl Version number stuff here:
 
 PNGLIB_VERSION=1.4.5beta04
 PNGLIB_MAJOR=1
-PNGLIB_MINOR=%RELEASE%
+PNGLIB_MINOR=4
 PNGLIB_RELEASE=%RELEASE%
 
-AC_INIT([libpng], [1.4.5beta04], [png-mng-implement@lists.sourceforge.net])
-AM_INIT_AUTOMAKE
-dnl stop configure from automagically running automake
-AM_MAINTAINER_MODE
-
 dnl End of version number stuff
 
 AC_CONFIG_SRCDIR([pngget.c])
 AM_CONFIG_HEADER(config.h)
diff -ru4NwbB libpng-1.4.4/png.c libpng-1.4.5beta04/png.c
--- libpng-1.4.4/png.c	2010-09-23 07:18:34.010735709 -0500
+++ libpng-1.4.5beta04/png.c	2010-11-08 12:41:56.963158037 -0600
@@ -18,12 +18,8 @@
 
 /* Generate a compiler error if there is an old png.h in the search path. */
 typedef version_%_VER_% Your_png_h_is_not_version_%_VER_%;
 
-/* Version information for C files.  This had better match the version
- * string defined in png.h.
- */
-
 /* Tells libpng that we have already handled the first "num_bytes" bytes
  * of the PNG file signature.  If the PNG data is embedded into another
  * stream we can set num_bytes = 8 so that libpng will not attempt to read
  * or write any of the magic bytes before it starts on the IHDR.
diff -ru4NwbB libpng-1.4.4/png.h libpng-1.4.5beta04/png.h
--- libpng-1.4.4/png.h	2010-09-23 07:18:33.979216289 -0500
+++ libpng-1.4.5beta04/png.h	2010-11-08 12:41:56.929651011 -0600
@@ -145,9 +145,11 @@
  *    1.4.3beta01-05          14    10403  14.so.14.3[.0]
  *    1.4.3rc01-03            14    10403  14.so.14.3[.0]
  *    1.4.3                   14    10403  14.so.14.3[.0]
  *    1.4.4beta01-08          14    10404  14.so.14.4[.0]
- *    1.4.4rc01-06            14    10404  14.so.14.4[.0]
+ *    1.4.4rc01-05            14    10404  14.so.14.4[.0]
+ *    1.4.4                   14    10404  14.so.14.4[.0]
+ *    1.4.5beta01-04          14    10405  14.so.14.5[.0]
  *
  *    Henceforth the source version will match the shared-library major
  *    and minor numbers; the shared-library major version number will be
  *    used for changes in backward compatibility, as it is intended.  The
diff -ru4NwbB libpng-1.4.4/pngset.c libpng-1.4.5beta04/pngset.c
--- libpng-1.4.4/pngset.c	2010-09-23 07:18:34.091076135 -0500
+++ libpng-1.4.5beta04/pngset.c	2010-11-08 12:41:57.048701998 -0600
@@ -1,8 +1,8 @@
 
 /* pngset.c - storage of image information into info struct
  *
- * Last changed in libpng 1.4.1 [February 25, 2010]
+ * Last changed in libpng 1.4.5 [November 8, 2010]
  * Copyright (c) 1998-2010 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.)
  *
@@ -689,8 +689,15 @@
 
       if (text_ptr[i].key == NULL)
           continue;
 
+      if (text_ptr[i].compression < PNG_TEXT_COMPRESSION_NONE ||
+          text_ptr[i].compression >= PNG_TEXT_COMPRESSION_LAST)
+      {
+         png_warning(png_ptr, "text compression mode is out of range");
+         continue;
+      }
+
       key_len = png_strlen(text_ptr[i].key);
 
       if (text_ptr[i].compression <= 0)
       {