[master] Imported from libpng-1.5.10beta03.tar

38 files changed, 441 insertions, 142 deletions

diff --git a/ANNOUNCE b/ANNOUNCE
index 551aa275c..1b08b26b5 100644
--- a/ANNOUNCE
+++ b/ANNOUNCE
@@ -1,5 +1,5 @@
 
-Libpng 1.5.10beta01 - February 21, 2012
+Libpng 1.5.10beta03 - March 5, 2012
 
 This is not intended to be a public release.  It will be replaced
 within a few weeks by a public version or by another test version.
@@ -9,24 +9,24 @@ Files available for download:
 Source files with LF line endings (for Unix/Linux) and with a
 "configure" script
 
-   1.5.10beta01.tar.xz (LZMA-compressed, recommended)
-   1.5.10beta01.tar.gz
-   1.5.10beta01.tar.bz2
+   1.5.10beta03.tar.xz (LZMA-compressed, recommended)
+   1.5.10beta03.tar.gz
+   1.5.10beta03.tar.bz2
 
 Source files with CRLF line endings (for Windows), without the
 "configure" script
 
-   lp1510b01.7z  (LZMA-compressed, recommended)
-   lp1510b01.zip
+   lp1510b03.7z  (LZMA-compressed, recommended)
+   lp1510b03.zip
 
 Other information:
 
-   1.5.10beta01-README.txt
-   1.5.10beta01-LICENSE.txt
+   1.5.10beta03-README.txt
+   1.5.10beta03-LICENSE.txt
 
 Changes since the last public release (1.5.9):
 
-Version 1.5.10beta01 [February 21, 2012]
+Version 1.5.10beta01 [February 24, 2012]
   Removed two useless #ifdef directives from pngread.c and one from pngrutil.c
   Always put the CMAKE_LIBRARY in "lib" (removed special WIN32 case).
   Removed empty vstudio/pngstest directory (Clifford Yapp).
@@ -35,6 +35,20 @@ Version 1.5.10beta01 [February 21, 2012]
     now that png_ptr->buffer is inaccessible to applications, the special
     handling is no longer useful.
   Fixed bug with png_handle_hIST with odd chunk length (Frank Busse).
+  Added PNG_SAFE_LIMITS feature to pnglibconf.dfa and code in pngconf.h
+    to reset the user limits to safe ones if PNG_SAFE_LIMITS is defined.
+    To enable, use "CPPFLAGS=-DPNG_SAFE_LIMITS_SUPPORTED" on the configure
+    command or put "#define PNG_SAFE_LIMITS_SUPPORTED" in pnglibconf.h.
+  Revised the SAFE_LIMITS feature to be the same as the feature in libpng16.
+  Added information about the new limits in the manual.
+
+Version 1.5.10beta02 [February 27, 2012]
+  Updated Makefile.in
+
+Version 1.5.10beta03 [March 5, 2012]
+  Removed unused "current_text" members of png_struct and the png_free()
+    of png_ptr->current_text from pngread.c
+  Added palette-index checking.
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net:
 (subscription required; visit
diff --git a/CHANGES b/CHANGES
index 4058701e3..280c46734 100644
--- a/CHANGES
+++ b/CHANGES
@@ -3803,14 +3803,15 @@ Version 1.5.9beta02 [February 16, 2012]
   Removed tests for no-longer-used *_EMPTY_PLTE_SUPPORTED from pngstruct.h
 
 Version 1.5.9rc01 [February 17, 2012]
-  Fixed CVE-2011-3026 buffer overrun bug.  Deal more correctly with the test
-    on iCCP chunk length. Also removed spurious casts that may hide problems
-    on 16-bit systems.
+  Fixed CVE-2011-3026 buffer overrun bug.  This bug was introduced when
+    iCCP chunk support was added at libpng-1.0.6. Deal more correctly with the
+    test on iCCP chunk length. Also removed spurious casts that may hide
+    problems on 16-bit systems.
 
 Version 1.5.9 [February 18, 2012]
   No changes.
 
-Version 1.5.10beta01 [February 21, 2012]
+Version 1.5.10beta01 [February 24, 2012]
   Removed two useless #ifdef directives from pngread.c and one from pngrutil.c
   Always put the CMAKE_LIBRARY in "lib" (removed special WIN32 case).
   Removed empty vstudio/pngstest directory (Clifford Yapp).
@@ -3819,6 +3820,20 @@ Version 1.5.10beta01 [February 21, 2012]
     now that png_ptr->buffer is inaccessible to applications, the special
     handling is no longer useful.
   Fixed bug with png_handle_hIST with odd chunk length (Frank Busse).
+  Added PNG_SAFE_LIMITS feature to pnglibconf.dfa and code in pngconf.h
+    to reset the user limits to safe ones if PNG_SAFE_LIMITS is defined.
+    To enable, use "CPPFLAGS=-DPNG_SAFE_LIMITS_SUPPORTED" on the configure
+    command or put "#define PNG_SAFE_LIMITS_SUPPORTED" in pnglibconf.h.
+  Revised the SAFE_LIMITS feature to be the same as the feature in libpng16.
+  Added information about the new limits in the manual.
+
+Version 1.5.10beta02 [February 27, 2012]
+  Updated Makefile.in
+
+Version 1.5.10beta03 [March 5, 2012]
+  Removed unused "current_text" members of png_struct and the png_free()
+    of png_ptr->current_text from pngread.c
+  Added palette-index checking.
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 (subscription required; visit
diff --git a/CMakeLists.txt b/CMakeLists.txt
index c1b1d988a..dd1831980 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -225,7 +225,7 @@ endif(NOT WIN32 OR CYGWIN OR MINGW)
 # SET UP LINKS
 if(PNG_SHARED)
   set_target_properties(${PNG_LIB_NAME} PROPERTIES
-#   VERSION 15.${PNGLIB_RELEASE}.1.5.10beta01
+#   VERSION 15.${PNGLIB_RELEASE}.1.5.10beta03
     VERSION 15.${PNGLIB_RELEASE}.0
     SOVERSION 15
     CLEAN_DIRECT_OUTPUT 1)
diff --git a/LICENSE b/LICENSE
index ade027218..dc6b16a5d 100644
--- a/LICENSE
+++ b/LICENSE
@@ -10,7 +10,7 @@ this sentence.
 
 This code is released under the libpng license.
 
-libpng versions 1.2.6, August 15, 2004, through 1.5.10beta01, February 21, 2012, are
+libpng versions 1.2.6, August 15, 2004, through 1.5.10beta03, March 5, 2012, are
 Copyright (c) 2004, 2006-2011 Glenn Randers-Pehrson, and are
 distributed according to the same disclaimer and license as libpng-1.2.5
 with the following individual added to the list of Contributing Authors
@@ -108,4 +108,4 @@ certification mark of the Open Source Initiative.
 
 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-February 21, 2012
+March 5, 2012
diff --git a/Makefile.am b/Makefile.am
index 822811576..19652c4bd 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -38,7 +38,7 @@ lib_LTLIBRARIES=libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@.la
 libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES = png.c pngerror.c\
 	pngget.c pngmem.c pngpread.c pngread.c pngrio.c pngrtran.c pngrutil.c\
 	pngset.c pngtrans.c pngwio.c pngwrite.c pngwtran.c pngwutil.c\
-	png.h pngconf.h pngdebug.h pnginfo.h pngpriv.h pngstruct.h
+	png.h pngconf.h pngdebug.h pnginfo.h pngpriv.h pngstruct.h pngusr.dfa
 
 if PNG_ARM_NEON
 libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES += arm/filter_neon.S
@@ -153,11 +153,11 @@ SYMBOL_CFLAGS = -DPNGLIB_LIBNAME='PNG@PNGLIB_MAJOR@@PNGLIB_MINOR@_0'\
 	mv dfn3.out $@
 
 # The .dfn file for pnglibconf.h is machine generated
-pnglibconf.dfn: scripts/pnglibconf.dfa scripts/options.awk pngconf.h
+pnglibconf.dfn: scripts/pnglibconf.dfa scripts/options.awk pngconf.h pngusr.dfa $(DFA_XTRA)
 	rm -f $@ dfn?.out
 	$(AWK) -f ${srcdir}/scripts/options.awk out=dfn1.out version=search\
 	    ${srcdir}/pngconf.h ${srcdir}/scripts/pnglibconf.dfa\
-	    $(DFA_XTRA) 1>&2
+	    ${srcdir}/pngusr.dfa $(DFA_XTRA) 1>&2
 	$(AWK) -f ${srcdir}/scripts/options.awk out=dfn2.out dfn1.out 1>&2
 	rm dfn1.out
 	mv dfn2.out $@
diff --git a/Makefile.in b/Makefile.in
index ebc8bc61c..2ff35f74a 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -102,7 +102,7 @@ am__libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES_DIST = png.c \
 	pngerror.c pngget.c pngmem.c pngpread.c pngread.c pngrio.c \
 	pngrtran.c pngrutil.c pngset.c pngtrans.c pngwio.c pngwrite.c \
 	pngwtran.c pngwutil.c png.h pngconf.h pngdebug.h pnginfo.h \
-	pngpriv.h pngstruct.h arm/filter_neon.S
+	pngpriv.h pngstruct.h arm/filter_neon.S pngusr.dfa
 @PNG_ARM_NEON_TRUE@am__objects_1 = libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-filter_neon.lo
 am_libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_OBJECTS =  \
 	libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-png.lo \
@@ -356,7 +356,7 @@ libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES = png.c pngerror.c \
 	pngget.c pngmem.c pngpread.c pngread.c pngrio.c pngrtran.c \
 	pngrutil.c pngset.c pngtrans.c pngwio.c pngwrite.c pngwtran.c \
 	pngwutil.c png.h pngconf.h pngdebug.h pnginfo.h pngpriv.h \
-	pngstruct.h $(am__append_1)
+	pngstruct.h pngusr.dfa $(am__append_1)
 nodist_libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES = pnglibconf.h
 libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_CPPFLAGS = @LIBPNG_DEFINES@
 libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_LDFLAGS = -no-undefined \
@@ -1373,11 +1373,11 @@ contrib/libtests/pngvalid.o pngtest.o: pnglibconf.h
 	mv dfn3.out $@
 
 # The .dfn file for pnglibconf.h is machine generated
-pnglibconf.dfn: scripts/pnglibconf.dfa scripts/options.awk pngconf.h
+pnglibconf.dfn: scripts/pnglibconf.dfa scripts/options.awk pngconf.h pngusr.dfa $(DFA_XTRA)
 	rm -f $@ dfn?.out
 	$(AWK) -f ${srcdir}/scripts/options.awk out=dfn1.out version=search\
 	    ${srcdir}/pngconf.h ${srcdir}/scripts/pnglibconf.dfa\
-	    $(DFA_XTRA) 1>&2
+	    ${srcdir}/pngusr.dfa $(DFA_XTRA) 1>&2
 	$(AWK) -f ${srcdir}/scripts/options.awk out=dfn2.out dfn1.out 1>&2
 	rm dfn1.out
 	mv dfn2.out $@
diff --git a/README b/README
index 36b4cc81d..3bded0580 100644
--- a/README
+++ b/README
@@ -1,4 +1,4 @@
-README for libpng version 1.5.10beta01 - February 21, 2012 (shared library 15.0)
+README for libpng version 1.5.10beta03 - March 5, 2012 (shared library 15.0)
 See the note about version numbers near the top of png.h
 
 See INSTALL for instructions on how to install libpng.
diff --git a/configure b/configure
index a84b3ea0d..cbe43118f 100755
--- a/configure
+++ b/configure
@@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.68 for libpng 1.5.10beta01.
+# Generated by GNU Autoconf 2.68 for libpng 1.5.10beta03.
 #
 # Report bugs to <png-mng-implement@lists.sourceforge.net>.
 #
@@ -570,8 +570,8 @@ MAKEFLAGS=
 # Identity of this package.
 PACKAGE_NAME='libpng'
 PACKAGE_TARNAME='libpng'
-PACKAGE_VERSION='1.5.10beta01'
-PACKAGE_STRING='libpng 1.5.10beta01'
+PACKAGE_VERSION='1.5.10beta03'
+PACKAGE_STRING='libpng 1.5.10beta03'
 PACKAGE_BUGREPORT='png-mng-implement@lists.sourceforge.net'
 PACKAGE_URL=''
 
@@ -1321,7 +1321,7 @@ if test "$ac_init_help" = "long"; then
   # Omit some internal or obsolete options to make the list less imposing.
   # This message is too long to be a string in the A/UX 3.1 sh.
   cat <<_ACEOF
-\`configure' configures libpng 1.5.10beta01 to adapt to many kinds of systems.
+\`configure' configures libpng 1.5.10beta03 to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1391,7 +1391,7 @@ fi
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of libpng 1.5.10beta01:";;
+     short | recursive ) echo "Configuration of libpng 1.5.10beta03:";;
    esac
   cat <<\_ACEOF
 
@@ -1502,7 +1502,7 @@ fi
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
-libpng configure 1.5.10beta01
+libpng configure 1.5.10beta03
 generated by GNU Autoconf 2.68
 
 Copyright (C) 2010 Free Software Foundation, Inc.
@@ -1925,7 +1925,7 @@ cat >config.log <<_ACEOF
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
 
-It was created by libpng $as_me 1.5.10beta01, which was
+It was created by libpng $as_me 1.5.10beta03, which was
 generated by GNU Autoconf 2.68.  Invocation command line was
 
   $ $0 $@
@@ -2740,7 +2740,7 @@ fi
 
 # Define the identity of the package.
  PACKAGE='libpng'
- VERSION='1.5.10beta01'
+ VERSION='1.5.10beta03'
 
 
 cat >>confdefs.h <<_ACEOF
@@ -2804,7 +2804,7 @@ fi
 
 
 
-PNGLIB_VERSION=1.5.10beta01
+PNGLIB_VERSION=1.5.10beta03
 PNGLIB_MAJOR=1
 PNGLIB_MINOR=5
 PNGLIB_RELEASE=10
@@ -13417,7 +13417,7 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
 # report actual input values of CONFIG_FILES etc. instead of their
 # values after options handling.
 ac_log="
-This file was extended by libpng $as_me 1.5.10beta01, which was
+This file was extended by libpng $as_me 1.5.10beta03, which was
 generated by GNU Autoconf 2.68.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -13483,7 +13483,7 @@ _ACEOF
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`"
 ac_cs_version="\\
-libpng config.status 1.5.10beta01
+libpng config.status 1.5.10beta03
 configured by $0, generated by GNU Autoconf 2.68,
   with options \\"\$ac_cs_config\\"
 
diff --git a/configure.ac b/configure.ac
index a099857e9..b2d52c44e 100644
--- a/configure.ac
+++ b/configure.ac
@@ -18,12 +18,12 @@ AC_PREREQ(2.59)
 
 dnl Version number stuff here:
 
-AC_INIT([libpng], [1.5.10beta01], [png-mng-implement@lists.sourceforge.net])
+AC_INIT([libpng], [1.5.10beta03], [png-mng-implement@lists.sourceforge.net])
 AM_INIT_AUTOMAKE
 dnl stop configure from automagically running automake
 AM_MAINTAINER_MODE
 
-PNGLIB_VERSION=1.5.10beta01
+PNGLIB_VERSION=1.5.10beta03
 PNGLIB_MAJOR=1
 PNGLIB_MINOR=5
 PNGLIB_RELEASE=10
diff --git a/libpng-manual.txt b/libpng-manual.txt
index 1163cb075..b6942f4fb 100644
--- a/libpng-manual.txt
+++ b/libpng-manual.txt
@@ -1,6 +1,6 @@
 libpng-manual.txt - A description on how to use and modify libpng
 
- libpng version 1.5.10beta01 - February 21, 2012
+ libpng version 1.5.10beta03 - March 5, 2012
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
  Copyright (c) 1998-2011 Glenn Randers-Pehrson
@@ -11,7 +11,7 @@ libpng-manual.txt - A description on how to use and modify libpng
 
  Based on:
 
- libpng versions 0.97, January 1998, through 1.5.10beta01 - February 21, 2012
+ libpng versions 0.97, January 1998, through 1.5.10beta03 - March 5, 2012
  Updated and distributed by Glenn Randers-Pehrson
  Copyright (c) 1998-2011 Glenn Randers-Pehrson
 
@@ -4142,6 +4142,15 @@ X.  Changes to Libpng from version 1.4.x to 1.5.x
 From libpng-1.4.0 until 1.4.4, the png_get_uint_16 macro (but not the
 function) incorrectly returned a value of type png_uint_32.
 
+Checking for invalid palette index on read or write was added at libpng
+1.5.10.  This is enabled by default but can be disabled in each png_ptr with
+
+   png_set_check_for_invalid_index(png_ptr, allowed);
+
+      allowed  - one of
+                 0: disable
+                 1: enable
+
 A. Changes that affect users of libpng
 
 There are no substantial API changes between the non-deprecated parts of
@@ -4260,6 +4269,20 @@ PNG_USER_WIDTH_MAX and PNG_USER_HEIGHT_MAX, although this document said
 that it could be used to override them.  Now this function will reduce or
 increase the limits.
 
+Starting in libpng-1.5.10, the user limits can be set en masse with the
+configuration option PNG_SAFE_LIMITS_SUPPORTED.  If this option is enabled,
+a set of "safe" limits is applied in pngpriv.h.  These can be overridden by
+application calls to png_set_user_limits(), png_set_user_chunk_cache_max(),
+and/or png_set_user_malloc_max() that increase or decrease the limits.  Also,
+in libpng-1.5.10 the default width and height limits were increased
+from 1,000,000 to 0x7ffffff (i.e., made unlimited).  Therefore, the
+limits are now
+                               default      safe
+   png_user_width_max        0x7fffffff    1,000,000
+   png_user_height_max       0x7fffffff    1,000,000
+   png_user_chunk_cache_max  0 (unlimited)   128
+   png_user_chunk_malloc_max 0 (unlimited) 8,000,000
+
 B. Changes to the build and configuration of libpng
 
 Details of internal changes to the library code can be found in the CHANGES
@@ -4573,13 +4596,13 @@ Other rules can be inferred by inspecting the libpng source.
 
 XIV. Y2K Compliance in libpng
 
-February 21, 2012
+March 5, 2012
 
 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 1.5.10beta01 are Y2K compliant.  It is my belief that earlier
+upward through 1.5.10beta03 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/libpng.3 b/libpng.3
index 5fd34921c..eae019dbd 100644
--- a/libpng.3
+++ b/libpng.3
@@ -1,6 +1,6 @@
-.TH LIBPNG 3 "February 21, 2012"
+.TH LIBPNG 3 "March 5, 2012"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.5.10beta01
+libpng \- Portable Network Graphics (PNG) Reference Library 1.5.10beta03
 .SH SYNOPSIS
 \fI\fB
 
@@ -552,6 +552,10 @@ libpng \- Portable Network Graphics (PNG) Reference Library 1.5.10beta01
 
 \fI\fB
 
+\fBvoid png_set_check_for_invalid_index(png_structrp \fP\fIpng_ptr\fP\fB, int \fIallowed\fP\fB);\fP
+
+\fI\fB
+
 \fBvoid png_set_cHRM (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, double \fP\fIwhite_x\fP\fB, double \fP\fIwhite_y\fP\fB, double \fP\fIred_x\fP\fB, double \fP\fIred_y\fP\fB, double \fP\fIgreen_x\fP\fB, double \fP\fIgreen_y\fP\fB, double \fP\fIblue_x\fP\fB, double \fIblue_y\fP\fB);\fP
 
 \fI\fB
@@ -977,7 +981,7 @@ Following is a copy of the libpng-manual.txt file that accompanies libpng.
 .SH LIBPNG.TXT
 libpng-manual.txt - A description on how to use and modify libpng
 
- libpng version 1.5.10beta01 - February 21, 2012
+ libpng version 1.5.10beta03 - March 5, 2012
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
  Copyright (c) 1998-2011 Glenn Randers-Pehrson
@@ -988,7 +992,7 @@ libpng-manual.txt - A description on how to use and modify libpng
 
  Based on:
 
- libpng versions 0.97, January 1998, through 1.5.10beta01 - February 21, 2012
+ libpng versions 0.97, January 1998, through 1.5.10beta03 - March 5, 2012
  Updated and distributed by Glenn Randers-Pehrson
  Copyright (c) 1998-2011 Glenn Randers-Pehrson
 
@@ -5120,6 +5124,15 @@ We removed the trailing '.' from the warning and error messages.
 From libpng-1.4.0 until 1.4.4, the png_get_uint_16 macro (but not the
 function) incorrectly returned a value of type png_uint_32.
 
+Checking for invalid palette index on read or write was added at libpng
+1.5.10.  This is enabled by default but can be disabled in each png_ptr with
+
+   png_set_check_for_invalid_index(png_ptr, allowed);
+
+      allowed  - one of
+                 0: disable
+                 1: enable
+
 A. Changes that affect users of libpng
 
 There are no substantial API changes between the non-deprecated parts of
@@ -5238,6 +5251,20 @@ PNG_USER_WIDTH_MAX and PNG_USER_HEIGHT_MAX, although this document said
 that it could be used to override them.  Now this function will reduce or
 increase the limits.
 
+Starting in libpng-1.5.10, the user limits can be set en masse with the
+configuration option PNG_SAFE_LIMITS_SUPPORTED.  If this option is enabled,
+a set of "safe" limits is applied in pngpriv.h.  These can be overridden by
+application calls to png_set_user_limits(), png_set_user_chunk_cache_max(),
+and/or png_set_user_malloc_max() that increase or decrease the limits.  Also,
+in libpng-1.5.10 the default width and height limits were increased
+from 1,000,000 to 0x7ffffff (i.e., made unlimited).  Therefore, the
+limits are now
+                               default      safe
+   png_user_width_max        0x7fffffff    1,000,000
+   png_user_height_max       0x7fffffff    1,000,000
+   png_user_chunk_cache_max  0 (unlimited)   128
+   png_user_chunk_malloc_max 0 (unlimited) 8,000,000
+
 B. Changes to the build and configuration of libpng
 
 Details of internal changes to the library code can be found in the CHANGES
@@ -5551,13 +5578,13 @@ Other rules can be inferred by inspecting the libpng source.
 
 .SH XIV. Y2K Compliance in libpng
 
-February 21, 2012
+March 5, 2012
 
 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 1.5.10beta01 are Y2K compliant.  It is my belief that earlier
+upward through 1.5.10beta03 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
@@ -5768,7 +5795,7 @@ the first widely used release:
  1.5.9beta01-02      15    10509  15.so.15.9[.0]
  1.5.9rc01           15    10509  15.so.15.9[.0]
  1.5.9               15    10509  15.so.15.9[.0]
- 1.5.10beta01        15    10510  15.so.15.10[.0]
+ 1.5.10beta01-03     15    10510  15.so.15.10[.0]
 
 Henceforth the source version will match the shared-library minor
 and patch numbers; the shared-library major version number will be
@@ -5825,7 +5852,7 @@ possible without all of you.
 
 Thanks to Frank J. T. Wojcik for helping with the documentation.
 
-Libpng version 1.5.10beta01 - February 21, 2012:
+Libpng version 1.5.10beta03 - March 5, 2012:
 Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
 Currently maintained by Glenn Randers-Pehrson (glennrp at users.sourceforge.net).
 
@@ -5848,7 +5875,7 @@ this sentence.
 
 This code is released under the libpng license.
 
-libpng versions 1.2.6, August 15, 2004, through 1.5.10beta01, February 21, 2012, are
+libpng versions 1.2.6, August 15, 2004, through 1.5.10beta03, March 5, 2012, are
 Copyright (c) 2004,2006-2007 Glenn Randers-Pehrson, and are
 distributed according to the same disclaimer and license as libpng-1.2.5
 with the following individual added to the list of Contributing Authors
@@ -5947,7 +5974,7 @@ certification mark of the Open Source Initiative.
 
 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-February 21, 2012
+March 5, 2012
 
 .\" end of man page
 
diff --git a/libpngpf.3 b/libpngpf.3
index 7722c281a..a9317b392 100644
--- a/libpngpf.3
+++ b/libpngpf.3
@@ -1,6 +1,6 @@
-.TH LIBPNGPF 3 "February 21, 2012"
+.TH LIBPNGPF 3 "March 5, 2012"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.5.10beta01
+libpng \- Portable Network Graphics (PNG) Reference Library 1.5.10beta03
 (private functions)
 .SH SYNOPSIS
 \fB#include \fI"pngpriv.h"
diff --git a/png.5 b/png.5
index b96ddd493..f0660563e 100644
--- a/png.5
+++ b/png.5
@@ -1,4 +1,4 @@
-.TH PNG 5 "February 21, 2012"
+.TH PNG 5 "March 5, 2012"
 .SH NAME
 png \- Portable Network Graphics (PNG) format
 .SH DESCRIPTION
diff --git a/png.c b/png.c
index 488a3da7c..87573e6de 100644
--- a/png.c
+++ b/png.c
@@ -1,8 +1,8 @@
 
 /* png.c - location for general purpose libpng functions
  *
- * Last changed in libpng 1.5.7 [December 15, 2011]
- * Copyright (c) 1998-2011 Glenn Randers-Pehrson
+ * Last changed in libpng 1.5.10 [(PENDING RELEASE)]
+ * Copyright (c) 1998-2012 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.)
  *
@@ -14,7 +14,7 @@
 #include "pngpriv.h"
 
 /* Generate a compiler error if there is an old png.h in the search path. */
-typedef png_libpng_version_1_5_10beta01 Your_png_h_is_not_version_1_5_10beta01;
+typedef png_libpng_version_1_5_10beta03 Your_png_h_is_not_version_1_5_10beta03;
 
 /* 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
@@ -655,13 +655,13 @@ png_get_copyright(png_const_structp png_ptr)
 #else
 #  ifdef __STDC__
    return PNG_STRING_NEWLINE \
-     "libpng version 1.5.10beta01 - February 21, 2012" PNG_STRING_NEWLINE \
+     "libpng version 1.5.10beta03 - March 5, 2012" PNG_STRING_NEWLINE \
      "Copyright (c) 1998-2011 Glenn Randers-Pehrson" PNG_STRING_NEWLINE \
      "Copyright (c) 1996-1997 Andreas Dilger" PNG_STRING_NEWLINE \
      "Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc." \
      PNG_STRING_NEWLINE;
 #  else
-      return "libpng version 1.5.10beta01 - February 21, 2012\
+      return "libpng version 1.5.10beta03 - March 5, 2012\
       Copyright (c) 1998-2011 Glenn Randers-Pehrson\
       Copyright (c) 1996-1997 Andreas Dilger\
       Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.";
@@ -1467,7 +1467,7 @@ static double
 png_pow10(int power)
 {
    int recip = 0;
-   double d = 1;
+   double d = 1.0;
 
    /* Handle negative exponent with a reciprocal at the end because
     * 10 is exact whereas .1 is inexact in base 2
@@ -1481,7 +1481,7 @@ png_pow10(int power)
    if (power > 0)
    {
       /* Decompose power bitwise. */
-      double mult = 10;
+      double mult = 10.0;
       do
       {
          if (power & 1) d *= mult;
@@ -1600,7 +1600,8 @@ png_ascii_from_fp(png_structp png_ptr, png_charp ascii, png_size_t size,
             {
                double d;
 
-               fp *= 10;
+               fp *= 10.0;
+
                /* Use modf here, not floor and subtract, so that
                 * the separation is done in one step.  At the end
                 * of the loop don't break the number into parts so
@@ -1613,7 +1614,7 @@ png_ascii_from_fp(png_structp png_ptr, png_charp ascii, png_size_t size,
                {
                   d = floor(fp + .5);
 
-                  if (d > 9)
+                  if (d > 9.0)
                   {
                      /* Rounding up to 10, handle that here. */
                      if (czero > 0)
@@ -1621,9 +1622,10 @@ png_ascii_from_fp(png_structp png_ptr, png_charp ascii, png_size_t size,
                         --czero, d = 1;
                         if (cdigits == 0) --clead;
                      }
+
                      else
                      {
-                        while (cdigits > 0 && d > 9)
+                        while (cdigits > 0 && d > 9.0)
                         {
                            int ch = *--ascii;
 
@@ -1648,7 +1650,7 @@ png_ascii_from_fp(png_structp png_ptr, png_charp ascii, png_size_t size,
                          * exponent but take into account the leading
                          * decimal point.
                          */
-                        if (d > 9)  /* cdigits == 0 */
+                        if (d > 9.0)  /* cdigits == 0 */
                         {
                            if (exp_b10 == (-1))
                            {
@@ -1669,18 +1671,19 @@ png_ascii_from_fp(png_structp png_ptr, png_charp ascii, png_size_t size,
                               ++exp_b10;
 
                            /* In all cases we output a '1' */
-                           d = 1;
+                           d = 1.0;
                         }
                      }
                   }
                   fp = 0; /* Guarantees termination below. */
                }
 
-               if (d == 0)
+               if (d == 0.0)
                {
                   ++czero;
                   if (cdigits == 0) ++clead;
                }
+
                else
                {
                   /* Included embedded zeros in the digit count. */
@@ -1708,6 +1711,7 @@ png_ascii_from_fp(png_structp png_ptr, png_charp ascii, png_size_t size,
                                                                  above */
                      --exp_b10;
                   }
+
                   *ascii++ = (char)(48 + (int)d), ++cdigits;
                }
             }
diff --git a/png.h b/png.h
index e4ad279af..42ec271d2 100644
--- a/png.h
+++ b/png.h
@@ -1,7 +1,7 @@
 
 /* png.h - header file for PNG reference library
  *
- * libpng version 1.5.10beta01 - February 21, 2012
+ * libpng version 1.5.10beta03 - March 5, 2012
  * Copyright (c) 1998-2012 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.)
@@ -11,7 +11,7 @@
  * 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 1.5.10beta01 - February 21, 2012: Glenn
+ *   libpng versions 0.97, January 1998, through 1.5.10beta03 - March 5, 2012: Glenn
  *   See also "Contributing Authors", below.
  *
  * Note about libpng version numbers:
@@ -172,7 +172,7 @@
  *    1.5.9beta01-02          15    10509  15.so.15.9[.0]
  *    1.5.9rc01               15    10509  15.so.15.9[.0]
  *    1.5.9                   15    10509  15.so.15.9[.0]
- *    1.5.10beta01            15    10510  15.so.15.10[.0]
+ *    1.5.10beta01-03         15    10510  15.so.15.10[.0]
  *
  *   Henceforth the source version will match the shared-library major
  *   and minor numbers; the shared-library major version number will be
@@ -204,7 +204,7 @@
  *
  * This code is released under the libpng license.
  *
- * libpng versions 1.2.6, August 15, 2004, through 1.5.10beta01, February 21, 2012, are
+ * libpng versions 1.2.6, August 15, 2004, through 1.5.10beta03, March 5, 2012, are
  * Copyright (c) 2004, 2006-2012 Glenn Randers-Pehrson, and are
  * distributed according to the same disclaimer and license as libpng-1.2.5
  * with the following individual added to the list of Contributing Authors:
@@ -316,13 +316,13 @@
  * Y2K compliance in libpng:
  * =========================
  *
- *    February 21, 2012
+ *    March 5, 2012
  *
  *    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 1.5.10beta01 are Y2K compliant.  It is my belief that
+ *    upward through 1.5.10beta03 are Y2K compliant.  It is my belief that
  *    earlier versions were also Y2K compliant.
  *
  *    Libpng only has two year fields.  One is a 2-byte unsigned integer
@@ -380,9 +380,9 @@
  */
 
 /* Version information for png.h - this should match the version in png.c */
-#define PNG_LIBPNG_VER_STRING "1.5.10beta01"
+#define PNG_LIBPNG_VER_STRING "1.5.10beta03"
 #define PNG_HEADER_VERSION_STRING \
-     " libpng version 1.5.10beta01 - February 21, 2012\n"
+     " libpng version 1.5.10beta03 - March 5, 2012\n"
 
 #define PNG_LIBPNG_VER_SONUM   15
 #define PNG_LIBPNG_VER_DLLNUM  15
@@ -396,7 +396,7 @@
  * PNG_LIBPNG_VER_STRING, omitting any leading zero:
  */
 
-#define PNG_LIBPNG_VER_BUILD  01
+#define PNG_LIBPNG_VER_BUILD  03
 
 /* Release Status */
 #define PNG_LIBPNG_BUILD_ALPHA    1
@@ -543,7 +543,7 @@ extern "C" {
 /* This triggers a compiler error in png.c, if png.c and png.h
  * do not agree upon the version number.
  */
-typedef char* png_libpng_version_1_5_10beta01;
+typedef char* png_libpng_version_1_5_10beta03;
 
 /* Three color definitions.  The order of the red, green, and blue, (and the
  * exact size) is not important, although the size of the fields need to
@@ -2638,6 +2638,12 @@ PNG_EXPORT(207, void, png_save_uint_16, (png_bytep buf, unsigned int i));
       : (png_int_32)png_get_uint_32(buf)))
 #endif
 
+#if defined(PNG_READ_CHECK_FOR_INVALID_INDEX_SUPPORTED) || \
+    defined(PNG_WRITE_CHECK_FOR_INVALID_INDEX_SUPPORTED)
+PNG_EXPORT(234, void, png_set_check_for_invalid_index, (png_structp png_ptr,
+    int allowed));
+#endif
+
 /* Maintainer: Put new public prototypes here ^, in libpng.3, and project
  * defs
  */
@@ -2647,7 +2653,7 @@ PNG_EXPORT(207, void, png_save_uint_16, (png_bytep buf, unsigned int i));
  * scripts/symbols.def as well.
  */
 #ifdef PNG_EXPORT_LAST_ORDINAL
-  PNG_EXPORT_LAST_ORDINAL(233);
+  PNG_EXPORT_LAST_ORDINAL(234);
 #endif
 
 #ifdef __cplusplus
diff --git a/pngconf.h b/pngconf.h
index e68c7b04c..044c1aebb 100644
--- a/pngconf.h
+++ b/pngconf.h
@@ -1,7 +1,7 @@
 
 /* pngconf.h - machine configurable file for libpng
  *
- * libpng version 1.5.10beta01 - February 21, 2012
+ * libpng version 1.5.10beta03 - March 5, 2012
  *
  * Copyright (c) 1998-2012 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
diff --git a/pngpriv.h b/pngpriv.h
index 67e486c57..42ec4c219 100644
--- a/pngpriv.h
+++ b/pngpriv.h
@@ -2,11 +2,11 @@
 /* pngpriv.h - private declarations for use inside libpng
  *
  * For conditions of distribution and use, see copyright notice in png.h
- * Copyright (c) 1998-2011 Glenn Randers-Pehrson
+ * Copyright (c) 1998-2012 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.)
  *
- * Last changed in libpng 1.5.7 [December 15, 2011]
+ * Last changed in libpng 1.5.10 [(PENDING RELEASE)]
  *
  * This code is released under the libpng license.
  * For conditions of distribution and use, see the disclaimer
@@ -133,6 +133,46 @@
 #  define PNG_DLL_EXPORT
 #endif
 
+/* SECURITY and SAFETY:
+ *
+ * By default libpng is built without any internal limits on image size,
+ * individual heap (png_malloc) allocations or the total amount of memory used.
+ * If PNG_SAFE_LIMITS_SUPPORTED is defined, however, the limits below are used
+ * (unless individually overridden).  These limits are believed to be fairly
+ * safe, but builders of secure systems should verify the values against the
+ * real system capabilities.
+ */
+
+#ifdef PNG_SAFE_LIMITS_SUPPORTED
+   /* 'safe' limits */
+#  ifndef PNG_USER_WIDTH_MAX
+#     define PNG_USER_WIDTH_MAX 1000000
+#  endif
+#  ifndef PNG_USER_HEIGHT_MAX
+#     define PNG_USER_HEIGHT_MAX 1000000
+#  endif
+#  ifndef PNG_USER_CHUNK_CACHE_MAX
+#     define PNG_USER_CHUNK_CACHE_MAX 128
+#  endif
+#  ifndef PNG_USER_CHUNK_MALLOC_MAX
+#     define PNG_USER_CHUNK_MALLOC_MAX 8000000
+#  endif
+#else
+   /* values for no limits */
+#  ifndef PNG_USER_WIDTH_MAX
+#     define PNG_USER_WIDTH_MAX 0x7fffffff
+#  endif
+#  ifndef PNG_USER_HEIGHT_MAX
+#     define PNG_USER_HEIGHT_MAX 0x7fffffff
+#  endif
+#  ifndef PNG_USER_CHUNK_CACHE_MAX
+#     define PNG_USER_CHUNK_CACHE_MAX 0
+#  endif
+#  ifndef PNG_USER_CHUNK_MALLOC_MAX
+#     define PNG_USER_CHUNK_MALLOC_MAX 0
+#  endif
+#endif
+
 /* This is used for 16 bit gamma tables - only the top level pointers are const,
  * this could be changed:
  */
@@ -1355,6 +1395,13 @@ PNG_EXTERN void png_check_IHDR PNGARG((png_structp png_ptr,
     int color_type, int interlace_type, int compression_type,
     int filter_type));
 
+/* Added at libpng version 1.5.10 */
+#if defined(PNG_READ_CHECK_FOR_INVALID_INDEX_SUPPORTED) || \
+    defined(PNG_WRITE_CHECK_FOR_INVALID_INDEX_SUPPORTED)
+PNG_EXTERN void png_do_check_palette_indexes PNGARG((png_structp png_ptr,
+    png_row_infop row_info));
+#endif
+
 /* Free all memory used by the read (old method - NOT DLL EXPORTED) */
 PNG_EXTERN void png_read_destroy PNGARG((png_structp png_ptr,
     png_infop info_ptr, png_infop end_info_ptr));
diff --git a/pngread.c b/pngread.c
index 59789ea5c..6f949f630 100644
--- a/pngread.c
+++ b/pngread.c
@@ -1,8 +1,8 @@
 
 /* pngread.c - read a PNG file
  *
- * Last changed in libpng 1.5.7 [December 15, 2011]
- * Copyright (c) 1998-2011 Glenn Randers-Pehrson
+ * Last changed in libpng 1.5.10 [(PENDING RELEASE)]
+ * Copyright (c) 1998-2012 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.)
  *
@@ -801,6 +801,13 @@ png_read_end(png_structp png_ptr, png_infop info_ptr)
 
    png_crc_finish(png_ptr, 0); /* Finish off CRC from last IDAT chunk */
 
+#ifdef PNG_READ_CHECK_FOR_INVALID_INDEX_SUPPORTED
+   /* Report invalid palette index; added at libng-1.5.10 */
+   if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE &&
+      png_ptr->num_palette_max > png_ptr->num_palette)
+     png_warning(png_ptr, "Read palette index exceeding num_palette");
+#endif
+
    do
    {
       png_uint_32 length = png_read_chunk_header(png_ptr);
@@ -1066,12 +1073,6 @@ png_read_destroy(png_structp png_ptr, png_infop info_ptr,
    png_free(png_ptr, png_ptr->save_buffer);
 #endif
 
-#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
-#ifdef PNG_TEXT_SUPPORTED
-   png_free(png_ptr, png_ptr->current_text);
-#endif /* PNG_TEXT_SUPPORTED */
-#endif /* PNG_PROGRESSIVE_READ_SUPPORTED */
-
    /* Save the important info out of the png_struct, in case it is
     * being used again.
     */
diff --git a/pngrtran.c b/pngrtran.c
index 1079595f0..6102987dc 100644
--- a/pngrtran.c
+++ b/pngrtran.c
@@ -1,8 +1,8 @@
 
 /* pngrtran.c - transforms the data in a row for PNG readers
  *
- * Last changed in libpng 1.5.7 [December 15, 2011]
- * Copyright (c) 1998-2011 Glenn Randers-Pehrson
+ * Last changed in libpng 1.5.10 [(PENDING RELEASE)]
+ * Copyright (c) 1998-2012 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.)
  *
@@ -2296,6 +2296,12 @@ png_do_read_transformations(png_structp png_ptr, png_row_infop row_info)
       png_do_unpack(row_info, png_ptr->row_buf + 1);
 #endif
 
+#ifdef PNG_READ_CHECK_FOR_INVALID_INDEX_SUPPORTED
+   /* Added at libpng-1.5.10 */
+   if (row_info->color_type == PNG_COLOR_TYPE_PALETTE)
+      png_do_check_palette_indexes(png_ptr, row_info);
+#endif
+
 #ifdef PNG_READ_BGR_SUPPORTED
    if (png_ptr->transformations & PNG_BGR)
       png_do_bgr(row_info, png_ptr->row_buf + 1);
diff --git a/pngrutil.c b/pngrutil.c
index 629c33ad0..74822a92b 100644
--- a/pngrutil.c
+++ b/pngrutil.c
@@ -1,7 +1,7 @@
 
 /* pngrutil.c - utilities to read a PNG file
  *
- * Last changed in libpng 1.5.9 [(PENDING RELEASE)]
+ * Last changed in libpng 1.5.10 [(PENDING RELEASE)]
  * Copyright (c) 1998-2012 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.)
diff --git a/pngset.c b/pngset.c
index 92db3890a..6aec77850 100644
--- a/pngset.c
+++ b/pngset.c
@@ -1,8 +1,8 @@
 
 /* pngset.c - storage of image information into info struct
  *
- * Last changed in libpng 1.5.7 [December 15, 2011]
- * Copyright (c) 1998-2011 Glenn Randers-Pehrson
+ * Last changed in libpng 1.5.10 [(PENDING RELEASE)]
+ * Copyright (c) 1998-2012 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.)
  *
@@ -1281,4 +1281,20 @@ png_set_benign_errors(png_structp png_ptr, int allowed)
       png_ptr->flags &= ~PNG_FLAG_BENIGN_ERRORS_WARN;
 }
 #endif /* PNG_BENIGN_ERRORS_SUPPORTED */
+
+#ifdef PNG_READ_CHECK_FOR_INVALID_INDEX_SUPPORTED
+   /* Do not report invalid palette index; added at libng-1.5.10 */
+void PNGAPI
+png_set_check_for_invalid_index(png_structp png_ptr, int allowed)
+{
+   png_debug(1, "in png_set_check_for_invalid_index");
+
+   if (allowed)
+      png_ptr->num_palette_max = 0;
+
+   else
+      png_ptr->num_palette_max = -1;
+}
+#endif
+
 #endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */
diff --git a/pngstruct.h b/pngstruct.h
index 3425ff24f..e062738f0 100644
--- a/pngstruct.h
+++ b/pngstruct.h
@@ -121,6 +121,12 @@ struct png_struct_def
    png_uint_32 crc;           /* current chunk CRC value */
    png_colorp palette;        /* palette from the input file */
    png_uint_16 num_palette;   /* number of color entries in palette */
+
+/* Added at libpng-1.5.10 */
+#ifdef PNG_CHECK_FOR_INVALID_INDEX_SUPPORTED
+   int num_palette_max;       /* maximum palette index found in IDAT */
+#endif
+
    png_uint_16 num_trans;     /* number of transparency values */
    png_byte compression;      /* file compression type (always 0) */
    png_byte filter;           /* file filter type (always 0) */
@@ -211,13 +217,6 @@ struct png_struct_def
    int process_mode;                 /* what push library is currently doing */
    int cur_palette;                  /* current push library palette index */
 
-#  ifdef PNG_TEXT_SUPPORTED
-     png_size_t current_text_size;   /* current size of text input data */
-     png_size_t current_text_left;   /* how much text left to read in input */
-     png_charp current_text;         /* current text chunk buffer */
-     png_charp current_text_ptr;     /* current location in current_text */
-#  endif /* PNG_PROGRESSIVE_READ_SUPPORTED && PNG_TEXT_SUPPORTED */
-
 #endif /* PNG_PROGRESSIVE_READ_SUPPORTED */
 
 #if defined(__TURBOC__) && !defined(_Windows) && !defined(__FLAT__)
diff --git a/pngtest.c b/pngtest.c
index c582ccd56..805412bd4 100644
--- a/pngtest.c
+++ b/pngtest.c
@@ -1817,4 +1817,4 @@ main(int argc, char *argv[])
 }
 
 /* Generate a compiler error if there is an old png.h in the search path. */
-typedef png_libpng_version_1_5_10beta01 Your_png_h_is_not_version_1_5_10beta01;
+typedef png_libpng_version_1_5_10beta03 Your_png_h_is_not_version_1_5_10beta03;
diff --git a/pngtrans.c b/pngtrans.c
index 6a6908dcd..9ea952ce7 100644
--- a/pngtrans.c
+++ b/pngtrans.c
@@ -1,8 +1,8 @@
 
 /* pngtrans.c - transforms the data in a row (used by both readers and writers)
  *
- * Last changed in libpng 1.5.4 [July 7, 2011]
- * Copyright (c) 1998-2011 Glenn Randers-Pehrson
+ * Last changed in libpng 1.5.10 [(PENDING RELEASE)]
+ * Copyright (c) 1998-2012 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.)
  *
@@ -619,6 +619,109 @@ png_do_bgr(png_row_infop row_info, png_bytep row)
 }
 #endif /* PNG_READ_BGR_SUPPORTED or PNG_WRITE_BGR_SUPPORTED */
 
+#if defined(PNG_READ_CHECK_FOR_INVALID_INDEX_SUPPORTED) || \
+    defined(PNG_WRITE_CHECK_FOR_INVALID_INDEX_SUPPORTED)
+/* Added at libpng-1.5.10 */
+void /* PRIVATE */
+png_do_check_palette_indexes(png_structp png_ptr, png_row_infop row_info)
+{
+   if (png_ptr->num_palette < (1 << row_info->bit_depth) &&
+      png_ptr->num_palette_max >= 0)
+   {
+      /* Calculations moved outside switch in an attempt to stop different
+       * compiler warnings.  'padding' is in *bits* within the last byte, it is
+       * an 'int' because pixel_depth becomes an 'int' in the expression below,
+       * and this calculation is used because it avoids warnings that other
+       * forms produced on either GCC or MSVC.
+       */
+      int padding = (-row_info->pixel_depth * row_info->width) & 7;
+      png_bytep rp = png_ptr->row_buf + 1 + row_info->rowbytes;
+
+      switch (row_info->bit_depth)
+      {
+         case 1:
+         {
+            /* in this case, all bytes must be 0 so we don't need
+             * to unpack the pixels except for the rightmost one.
+             */
+            for (; rp > png_ptr->row_buf; rp--)
+            {
+              if (*rp >> padding != 0)
+                 png_ptr->num_palette_max = 1;
+              padding = 0;
+            }
+
+            break;
+         }
+
+         case 2:
+         {
+            for (; rp > png_ptr->row_buf; rp--)
+            {
+              int i = ((*rp >> padding) & 0x03);
+
+              if (i > png_ptr->num_palette_max)
+                 png_ptr->num_palette_max = i;
+
+              i = (((*rp >> padding) >> 2) & 0x03);
+
+              if (i > png_ptr->num_palette_max)
+                 png_ptr->num_palette_max = i;
+
+              i = (((*rp >> padding) >> 4) & 0x03);
+
+              if (i > png_ptr->num_palette_max)
+                 png_ptr->num_palette_max = i;
+
+              i = (((*rp >> padding) >> 6) & 0x03);
+
+              if (i > png_ptr->num_palette_max)
+                 png_ptr->num_palette_max = i;
+
+              padding = 0;
+            }
+
+            break;
+         }
+
+         case 4:
+         {
+            for (; rp > png_ptr->row_buf; rp--)
+            {
+              int i = ((*rp >> padding) & 0x0f);
+
+              if (i > png_ptr->num_palette_max)
+                 png_ptr->num_palette_max = i;
+
+              i = (((*rp >> padding) >> 4) & 0x0f);
+
+              if (i > png_ptr->num_palette_max)
+                 png_ptr->num_palette_max = i;
+
+              padding = 0;
+            }
+
+            break;
+         }
+
+         case 8:
+         {
+            for (; rp > png_ptr->row_buf; rp--)
+            {
+               if (*rp >= png_ptr->num_palette_max)
+                  png_ptr->num_palette_max = (int) *rp;
+            }
+
+            break;
+         }
+
+         default:
+            break;
+      }
+   }
+}
+#endif /* PNG_CHECK_FOR_INVALID_INDEX_SUPPORTED */
+
 #if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
     defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
 #ifdef PNG_USER_TRANSFORM_PTR_SUPPORTED
diff --git a/pngusr.dfa b/pngusr.dfa
new file mode 100644
index 000000000..9d39564b5
--- /dev/null
+++ b/pngusr.dfa
@@ -0,0 +1,14 @@
+# pngusr.dfa
+#
+# Build time configuration of libpng
+#
+# Enter build configuration options in this file
+#
+# Security settings: by default these limits are unset, you can change them
+# here by entering the appropriate values as #defines preceded by '@' (to cause,
+# them to be passed through to the build of pnglibconf.h), for example:
+#
+# @# define PNG_USER_WIDTH_MAX 1000000
+# @# define PNG_USER_HEIGHT_MAX 1000000
+# @# define PNG_USER_CHUNK_CACHE_MAX 128
+# @# define PNG_USER_CHUNK_MALLOC_MAX 8000000
diff --git a/pngwrite.c b/pngwrite.c
index 6d3fd4c38..74aa7368e 100644
--- a/pngwrite.c
+++ b/pngwrite.c
@@ -1,8 +1,8 @@
 
 /* pngwrite.c - general routines to write a PNG file
  *
- * Last changed in libpng 1.5.7 [December 15, 2011]
- * Copyright (c) 1998-2011 Glenn Randers-Pehrson
+ * Last changed in libpng 1.5.10 [(PENDING RELEASE)]
+ * Copyright (c) 1998-2012 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.)
  *
@@ -305,6 +305,11 @@ png_write_end(png_structp png_ptr, png_infop info_ptr)
    if (!(png_ptr->mode & PNG_HAVE_IDAT))
       png_error(png_ptr, "No IDATs written into file");
 
+#ifdef PNG_WRITE_CHECK_FOR_INVALID_INDEX_SUPPORTED
+   if (png_ptr->num_palette_max > png_ptr->num_palette)
+      png_warning(png_ptr, "Wrote palette index exceeding num_palette");
+#endif
+
    /* See if user wants us to write information chunks */
    if (info_ptr != NULL)
    {
@@ -798,6 +803,13 @@ png_write_row(png_structp png_ptr, png_const_bytep row)
    }
 #endif
 
+/* Added at libpng-1.5.10 */
+#ifdef PNG_WRITE_CHECK_FOR_INVALID_INDEX_SUPPORTED
+   /* Check for out-of-range palette index */
+   if(row_info.color_type == PNG_COLOR_TYPE_PALETTE)
+      png_do_check_palette_indexes(png_ptr, &row_info);
+#endif
+
    /* Find a filter if necessary, filter the row and write it out. */
    png_write_find_filter(png_ptr, &row_info);
 
diff --git a/projects/vstudio/readme.txt b/projects/vstudio/readme.txt
index abbbafa35..b78286d24 100644
--- a/projects/vstudio/readme.txt
+++ b/projects/vstudio/readme.txt
@@ -1,7 +1,7 @@
 
 VisualStudio instructions
 
-libpng version 1.5.10beta01 - February 21, 2012
+libpng version 1.5.10beta03 - March 5, 2012
 
 Copyright (c) 1998-2010 Glenn Randers-Pehrson
 
diff --git a/projects/vstudio/zlib.props b/projects/vstudio/zlib.props
index 0456bda0f..3a6ff6d4d 100644
--- a/projects/vstudio/zlib.props
+++ b/projects/vstudio/zlib.props
@@ -2,7 +2,7 @@
 <!--
  * zlib.props - location of zlib source
  *
- * libpng version 1.5.10beta01 - February 21, 2012
+ * libpng version 1.5.10beta03 - March 5, 2012
  *
  * Copyright (c) 1998-2011 Glenn Randers-Pehrson
  *
diff --git a/scripts/README.txt b/scripts/README.txt
index c46f7743b..b1f795079 100644
--- a/scripts/README.txt
+++ b/scripts/README.txt
@@ -1,9 +1,9 @@
 
-Makefiles for  libpng version 1.5.10beta01 - February 21, 2012
+Makefiles for  libpng version 1.5.10beta03 - March 5, 2012
 
 pnglibconf.h.prebuilt       =>  Stores configuration settings
  makefile.linux    =>  Linux/ELF makefile
-                       (gcc, creates libpng15.so.15.1.5.10beta01)
+                       (gcc, creates libpng15.so.15.1.5.10beta03)
  makefile.gcc      =>  Generic makefile (gcc, creates static libpng.a)
  makefile.knr      =>  Archaic UNIX Makefile that converts files with
                        ansi2knr (Requires ansi2knr.c from
@@ -20,7 +20,7 @@ pnglibconf.h.prebuilt       =>  Stores configuration settings
  makefile.dec      =>  DEC Alpha UNIX makefile
  makefile.dj2      =>  DJGPP 2 makefile
  makefile.elf      =>  Linux/ELF makefile symbol versioning,
-                       (gcc, creates libpng15.so.15.1.5.10beta01)
+                       (gcc, creates libpng15.so.15.1.5.10beta03)
  makefile.freebsd  =>  FreeBSD makefile
  makefile.gcc      =>  Generic gcc makefile
  makefile.hpgcc    =>  HPUX makefile using gcc
@@ -35,12 +35,12 @@ pnglibconf.h.prebuilt       =>  Stores configuration settings
  makefile.os2      =>  OS/2 Makefile (gcc and emx, requires libpng.def)
  makefile.sco      =>  For SCO OSr5  ELF and Unixware 7 with Native cc
  makefile.sggcc    =>  Silicon Graphics (gcc,
-                       creates libpng15.so.15.1.5.10beta01)
+                       creates libpng15.so.15.1.5.10beta03)
  makefile.sgi      =>  Silicon Graphics IRIX makefile (cc, creates static lib)
  makefile.solaris  =>  Solaris 2.X makefile (gcc,
-                       creates libpng15.so.15.1.5.10beta01)
+                       creates libpng15.so.15.1.5.10beta03)
  makefile.so9      =>  Solaris 9 makefile (gcc,
-                       creates libpng15.so.15.1.5.10beta01)
+                       creates libpng15.so.15.1.5.10beta03)
  makefile.std      =>  Generic UNIX makefile (cc, creates static libpng.a)
  makefile.sunos    =>  Sun makefile
  makefile.32sunu   =>  Sun Ultra 32-bit makefile
diff --git a/scripts/libpng-config-head.in b/scripts/libpng-config-head.in
index 44c47f9d7..75554475e 100755
--- a/scripts/libpng-config-head.in
+++ b/scripts/libpng-config-head.in
@@ -11,7 +11,7 @@
 
 # Modeled after libxml-config.
 
-version=1.5.10beta01
+version=1.5.10beta03
 prefix=""
 libdir=""
 libs=""
diff --git a/scripts/libpng.pc.in b/scripts/libpng.pc.in
index 32123afcf..583ab0da3 100644
--- a/scripts/libpng.pc.in
+++ b/scripts/libpng.pc.in
@@ -5,6 +5,6 @@ includedir=@includedir@/libpng15
 
 Name: libpng
 Description: Loads and saves PNG files
-Version: 1.5.10beta01
+Version: 1.5.10beta03
 Libs: -L${libdir} -lpng15
 Cflags: -I${includedir}
diff --git a/scripts/makefile.ne12bsd b/scripts/makefile.ne12bsd
index dfa5b3f12..cc3fe99c4 100644
--- a/scripts/makefile.ne12bsd
+++ b/scripts/makefile.ne12bsd
@@ -17,7 +17,7 @@ INCSDIR=${LOCALBASE}/include/libpng15
 
 LIB=	png15
 SHLIB_MAJOR=	0
-SHLIB_MINOR=	1.5.10beta01
+SHLIB_MINOR=	1.5.10beta03
 SRCS=	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.netbsd b/scripts/makefile.netbsd
index c34e1d39b..bdc086378 100644
--- a/scripts/makefile.netbsd
+++ b/scripts/makefile.netbsd
@@ -17,7 +17,7 @@ INCSDIR=${LOCALBASE}/include
 
 LIB=	png
 SHLIB_MAJOR=	15
-SHLIB_MINOR=	1.5.10beta01
+SHLIB_MINOR=	1.5.10beta03
 SRCS=	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.openbsd b/scripts/makefile.openbsd
index 44a3062a2..9b824af0b 100644
--- a/scripts/makefile.openbsd
+++ b/scripts/makefile.openbsd
@@ -11,7 +11,7 @@ LIBDIR=	${PREFIX}/lib
 MANDIR= ${PREFIX}/man/cat
 
 SHLIB_MAJOR=	15
-SHLIB_MINOR=	1.5.10beta01
+SHLIB_MINOR=	1.5.10beta03
 
 LIB=	png
 SRCS=	png.c pngerror.c pngget.c pngmem.c pngpread.c \
diff --git a/scripts/options.awk b/scripts/options.awk
index a8dff044a..9ef98bc8e 100755
--- a/scripts/options.awk
+++ b/scripts/options.awk
@@ -42,7 +42,7 @@ BEGIN{
    comment=start cx             # Comment start
    cend="*/" end                # Comment end
    def=start "#define PNG_" ct  # Arbitrary define
-   sup=ct "_SUPPORTED" end      # end supported option
+   sup=ct "_SUPPORTED 1" end    # end supported option
    und=comment "#undef PNG_" ct # Unsupported option
    une=ct "_SUPPORTED" cend     # end unsupported option
    error=start "ERROR:"         # error message
diff --git a/scripts/pnglibconf.dfa b/scripts/pnglibconf.dfa
index a740d6827..f06eb6685 100644
--- a/scripts/pnglibconf.dfa
+++ b/scripts/pnglibconf.dfa
@@ -27,7 +27,7 @@ file pnglibconf.h scripts/pnglibconf.dfa PNGLCONF_H
 # The syntax is detailed in scripts/options.awk, this is a summary
 # only:
 #
-# setting <name> [requires ...] [default]
+# setting <name> [default]
 #    #define PNG_<name> <value>  /* value comes from current setting */
 # option <name> [requires ...] [if ...] [enables ...] [disabled]
 #    #define PNG_<name>_SUPPORTED if the requirements are met and
@@ -266,20 +266,22 @@ option SET_USER_LIMITS enables SET_CHUNK_CACHE_LIMIT
 
 option SET_USER_LIMITS enables SET_CHUNK_MALLOC_LIMIT
 
-# Added at libpng-1.0.16 and 1.2.6.  To accept all valid PNGs no matter
-# how large, set these two limits to 0x7fffffff
-
-setting USER_WIDTH_MAX default 1000000
-setting USER_HEIGHT_MAX default 1000000
-
-# Added at libpng-1.2.43.  To accept all valid PNGs no matter
-# how large, set these two limits to 0.
-
-setting USER_CHUNK_CACHE_MAX default 0
-
-# Added at libpng-1.2.43
-
-setting USER_CHUNK_MALLOC_MAX default 0
+# Libpng limits.
+#
+# If these settings are *not* set libpng will not limit the size of
+# images or the size of data in ancilliary chunks.  This does lead to
+# security issues if PNG files come from untrusted sources.
+setting USER_WIDTH_MAX
+setting USER_HEIGHT_MAX
+setting USER_CHUNK_CACHE_MAX
+setting USER_CHUNK_MALLOC_MAX
+
+# To default all these settings to values that are large but probably
+# safe turn the SAFE_LIMITS option on; this will cause the value in
+# pngpriv.h to be used.  Individual values can also be set, simply set
+# them in pngusr.dfa with '@#define PNG_setting value' lines.
+option SAFE_LIMITS enables USER_LIMITS disabled
+= SAFE_LIMITS SAFE_LIMITS
 
 # All of the following options relate to code capabilities for
 # processing image data before creating a PNG or after reading one.
@@ -576,3 +578,13 @@ option WRITE_COMPRESSED_TEXT enables WRITE_TEXT
 # leave the row_pointers member out of the info structure.
 
 option INFO_IMAGE
+
+# added at libpng-1.5.10
+# Turn this off to disable warning about invalid palette index and
+# leave the num_palette_max member out of the png structure.
+
+option CHECK_FOR_INVALID_INDEX enables READ_CHECK_FOR_INVALID_INDEX
+option CHECK_FOR_INVALID_INDEX enables WRITE_CHECK_FOR_INVALID_INDEX
+option READ_CHECK_FOR_INVALID_INDEX requires READ CHECK_FOR_INVALID_INDEX
+option WRITE_CHECK_FOR_INVALID_INDEX requires WRITE CHECK_FOR_INVALID_INDEX
+
diff --git a/scripts/pnglibconf.h.prebuilt b/scripts/pnglibconf.h.prebuilt
index 411a1ba5c..6528db099 100644
--- a/scripts/pnglibconf.h.prebuilt
+++ b/scripts/pnglibconf.h.prebuilt
@@ -3,9 +3,9 @@
 
 /* pnglibconf.h - library build configuration */
 
-/* Libpng 1.5.10beta01 - February 21, 2012 */
+/* Libpng 1.5.10beta03 - March 5, 2012 */
 
-/* Copyright (c) 1998-2011 Glenn Randers-Pehrson */
+/* Copyright (c) 1998-2012 Glenn Randers-Pehrson */
 
 /* This code is released under the libpng license. */
 /* For conditions of distribution and use, see the disclaimer */
@@ -31,10 +31,6 @@
 #define PNG_QUANTIZE_GREEN_BITS 5
 #define PNG_QUANTIZE_RED_BITS 5
 #define PNG_sCAL_PRECISION 5
-#define PNG_USER_CHUNK_CACHE_MAX 0
-#define PNG_USER_CHUNK_MALLOC_MAX 0
-#define PNG_USER_HEIGHT_MAX 1000000
-#define PNG_USER_WIDTH_MAX 1000000
 #define PNG_WEIGHT_SHIFT 8
 #define PNG_ZBUF_SIZE 8192
 /* end of settings */
@@ -45,6 +41,7 @@
 #define PNG_bKGD_SUPPORTED
 #define PNG_BUILD_GRAYSCALE_PALETTE_SUPPORTED
 #define PNG_CHECK_cHRM_SUPPORTED
+#define PNG_CHECK_FOR_INVALID_INDEX_SUPPORTED
 #define PNG_cHRM_SUPPORTED
 #define PNG_CONSOLE_IO_SUPPORTED
 #define PNG_CONVERT_tIME_SUPPORTED
@@ -74,6 +71,7 @@
 #define PNG_READ_BACKGROUND_SUPPORTED
 #define PNG_READ_BGR_SUPPORTED
 #define PNG_READ_bKGD_SUPPORTED
+#define PNG_READ_CHECK_FOR_INVALID_INDEX_SUPPORTED
 #define PNG_READ_cHRM_SUPPORTED
 #define PNG_READ_COMPOSITE_NODIV_SUPPORTED
 #define PNG_READ_COMPRESSED_TEXT_SUPPORTED
@@ -145,6 +143,7 @@
 #define PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
 #define PNG_WRITE_BGR_SUPPORTED
 #define PNG_WRITE_bKGD_SUPPORTED
+#define PNG_WRITE_CHECK_FOR_INVALID_INDEX_SUPPORTED
 #define PNG_WRITE_cHRM_SUPPORTED
 #define PNG_WRITE_COMPRESSED_TEXT_SUPPORTED
 #define PNG_WRITE_CUSTOMIZE_ZTXT_COMPRESSION_SUPPORTED
diff --git a/scripts/symbols.def b/scripts/symbols.def
index f3801f47f..826c2ee3f 100644
--- a/scripts/symbols.def
+++ b/scripts/symbols.def
@@ -5,7 +5,7 @@
 LIBRARY
 
 EXPORTS
-;Version 1.5.10beta01
+;Version 1.5.10beta03
  png_access_version_number @1
  png_set_sig_bytes @2
  png_sig_cmp @3
@@ -239,3 +239,4 @@ EXPORTS
  png_get_cHRM_XYZ_fixed @231
  png_set_cHRM_XYZ @232
  png_set_cHRM_XYZ_fixed @233
+ png_set_check_for_invalid_index @234