[libpng17] Bump version to 1.7.0alpha10

23 files changed, 56 insertions, 52 deletions

diff --git a/ANNOUNCE b/ANNOUNCE
index 5b74bc279..3564d5418 100644
--- a/ANNOUNCE
+++ b/ANNOUNCE
@@ -1,5 +1,5 @@
 
-Libpng 1.7.0alpha09 - January 21, 2013
+Libpng 1.7.0alpha10 - January 21, 2013
 
 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.
@@ -9,19 +9,19 @@ Files available for download:
 Source files with LF line endings (for Unix/Linux) and with a
 "configure" script
 
-   1.7.0alpha09.tar.xz (LZMA-compressed, recommended)
-   1.7.0alpha09.tar.gz
+   1.7.0alpha10.tar.xz (LZMA-compressed, recommended)
+   1.7.0alpha10.tar.gz
 
 Source files with CRLF line endings (for Windows), without the
 "configure" script
 
-   lp170a09.7z  (LZMA-compressed, recommended)
-   lp170a09.zip
+   lp170a10.7z  (LZMA-compressed, recommended)
+   lp170a10.zip
 
 Other information:
 
-   1.7.0alpha09-README.txt
-   1.7.0alpha09-LICENSE.txt
+   1.7.0alpha10-README.txt
+   1.7.0alpha10-LICENSE.txt
 
 Changes since the last public release (1.6.0):
 
@@ -116,6 +116,8 @@ Version 1.7.0alpha08 [January 17, 2013]
 Version 1.7.0alpha09 [January 21, 2013]
   Pulled changes to multi-chunk handling from libpng-1.6.0beta40.
 
+Version 1.7.0alpha10 [January 21, 2013]
+
   ===========================================================================
                        NOTICE November 17, 2012:
      The location of the git repository at SourceForge has changed.
diff --git a/CHANGES b/CHANGES
index ef0acfdfe..80cdb3a17 100644
--- a/CHANGES
+++ b/CHANGES
@@ -4402,6 +4402,8 @@ Version 1.7.0alpha08 [January 17, 2013]
 Version 1.7.0alpha09 [January 21, 2013]
   Pulled changes to multi-chunk handling from libpng-1.6.0beta40.
 
+Version 1.7.0alpha10 [January 21, 2013]
+
   ===========================================================================
                        NOTICE November 17, 2012:
      The location of the git repository at SourceForge has changed.
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 416ae2bab..9c884d0c1 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -260,7 +260,7 @@ endif(NOT WIN32 OR CYGWIN OR MINGW)
 # SET UP LINKS
 if(PNG_SHARED)
   set_target_properties(${PNG_LIB_NAME} PROPERTIES
-#   VERSION 17.${PNGLIB_RELEASE}.1.7.0alpha09
+#   VERSION 17.${PNGLIB_RELEASE}.1.7.0alpha10
     VERSION 17.${PNGLIB_RELEASE}.0
     SOVERSION 17
     CLEAN_DIRECT_OUTPUT 1)
diff --git a/LICENSE b/LICENSE
index 22cd80c9b..51f083e56 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 1.7.0alpha09, January 21, 2013, are
+libpng versions 1.2.6, August 15, 2004, through 1.7.0alpha10, January 21, 2013, are
 Copyright (c) 2004, 2006-2013 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
diff --git a/README b/README
index 406251e0f..2506c50ea 100644
--- a/README
+++ b/README
@@ -1,4 +1,4 @@
-README for libpng version 1.7.0alpha09 - January 21, 2013 (shared library 17.0)
+README for libpng version 1.7.0alpha10 - January 21, 2013 (shared library 17.0)
 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.ac b/configure.ac
index 8834d3671..c3f21c093 100644
--- a/configure.ac
+++ b/configure.ac
@@ -18,7 +18,7 @@ AC_PREREQ([2.68])
 
 dnl Version number stuff here:
 
-AC_INIT([libpng],[1.7.0alpha09],[png-mng-implement@lists.sourceforge.net])
+AC_INIT([libpng],[1.7.0alpha10],[png-mng-implement@lists.sourceforge.net])
 AC_CONFIG_MACRO_DIR([scripts])
 
 # libpng does not follow GNU file name conventions (hence 'foreign')
@@ -37,7 +37,7 @@ dnl automake, so the following is not necessary (and is not defined anyway):
 dnl AM_PREREQ([1.11.2])
 dnl stop configure from automagically running automake
 
-PNGLIB_VERSION=1.7.0alpha09
+PNGLIB_VERSION=1.7.0alpha10
 PNGLIB_MAJOR=1
 PNGLIB_MINOR=7
 PNGLIB_RELEASE=0
diff --git a/libpng-manual.txt b/libpng-manual.txt
index 40d13ee3e..39463d65c 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 1.7.0alpha09 - January 21, 2013
+ libpng version 1.7.0alpha10 - January 21, 2013
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
  Copyright (c) 1998-2013 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 1.7.0alpha09 - January 21, 2013
+ libpng versions 0.97, January 1998, through 1.7.0alpha10 - January 21, 2013
  Updated and distributed by Glenn Randers-Pehrson
  Copyright (c) 1998-2011 Glenn Randers-Pehrson
 
@@ -5167,7 +5167,7 @@ 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 1.7.0alpha09 are Y2K compliant.  It is my belief that earlier
+upward through 1.7.0alpha10 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
diff --git a/libpng.3 b/libpng.3
index 9c56459bb..68b15049e 100644
--- a/libpng.3
+++ b/libpng.3
@@ -1,6 +1,6 @@
 .TH LIBPNG 3 "January 21, 2013"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.7.0alpha09
+libpng \- Portable Network Graphics (PNG) Reference Library 1.7.0alpha10
 .SH SYNOPSIS
 \fB
 #include <png.h>\fP
@@ -494,7 +494,7 @@ 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 1.7.0alpha09 - January 21, 2013
+ libpng version 1.7.0alpha10 - January 21, 2013
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
  Copyright (c) 1998-2013 Glenn Randers-Pehrson
@@ -505,7 +505,7 @@ libpng-manual.txt - A description on how to use and modify libpng
 
  Based on:
 
- libpng versions 0.97, January 1998, through 1.7.0alpha09 - January 21, 2013
+ libpng versions 0.97, January 1998, through 1.7.0alpha10 - January 21, 2013
  Updated and distributed by Glenn Randers-Pehrson
  Copyright (c) 1998-2011 Glenn Randers-Pehrson
 
@@ -5662,7 +5662,7 @@ 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 1.7.0alpha09 are Y2K compliant.  It is my belief that earlier
+upward through 1.7.0alpha10 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
@@ -5868,7 +5868,7 @@ the first widely used release:
  1.5.7rc01-03        15    10507  15.so.15.7[.0]
  1.5.7               15    10507  15.so.15.7[.0]
  1.6.0beta01-37      16    10600  16.so.16.0[.0]
- 1.7.0alpha01-09     17    10700  17.so.17.0[.0]
+ 1.7.0alpha01-10     17    10700  17.so.17.0[.0]
 
 Henceforth the source version will match the shared-library minor
 and patch numbers; the shared-library major version number will be
@@ -5925,7 +5925,7 @@ possible without all of you.
 
 Thanks to Frank J. T. Wojcik for helping with the documentation.
 
-Libpng version 1.7.0alpha09 - January 21, 2013:
+Libpng version 1.7.0alpha10 - January 21, 2013:
 Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
 Currently maintained by Glenn Randers-Pehrson (glennrp at users.sourceforge.net).
 
@@ -5948,7 +5948,7 @@ this sentence.
 
 This code is released under the libpng license.
 
-libpng versions 1.2.6, August 15, 2004, through 1.7.0alpha09, January 21, 2013, are
+libpng versions 1.2.6, August 15, 2004, through 1.7.0alpha10, January 21, 2013, 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
diff --git a/libpngpf.3 b/libpngpf.3
index 0296c7630..d63ce2738 100644
--- a/libpngpf.3
+++ b/libpngpf.3
@@ -1,6 +1,6 @@
 .TH LIBPNGPF 3 "January 21, 2013"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.7.0alpha09
+libpng \- Portable Network Graphics (PNG) Reference Library 1.7.0alpha10
 (private functions)
 .SH SYNOPSIS
 \fB#include \fI"pngpriv.h"
diff --git a/png.c b/png.c
index cd123179d..0e1985e01 100644
--- a/png.c
+++ b/png.c
@@ -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_7_0alpha09 Your_png_h_is_not_version_1_7_0alpha09;
+typedef png_libpng_version_1_7_0alpha10 Your_png_h_is_not_version_1_7_0alpha10;
 
 /* 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
@@ -691,13 +691,13 @@ png_get_copyright(png_const_structrp png_ptr)
 #else
 #  ifdef __STDC__
    return PNG_STRING_NEWLINE \
-     "libpng version 1.7.0alpha09 - January 21, 2013" PNG_STRING_NEWLINE \
+     "libpng version 1.7.0alpha10 - January 21, 2013" PNG_STRING_NEWLINE \
      "Copyright (c) 1998-2013 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 1.7.0alpha09 - January 21, 2013\
+      return "libpng version 1.7.0alpha10 - January 21, 2013\
       Copyright (c) 1998-2013 Glenn Randers-Pehrson\
       Copyright (c) 1996-1997 Andreas Dilger\
       Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.";
diff --git a/png.h b/png.h
index a1d15ff9b..e0b477867 100644
--- a/png.h
+++ b/png.h
@@ -1,7 +1,7 @@
 
 /* png.h - header file for PNG reference library
  *
- * libpng version 1.7.0alpha09 - January 21, 2013
+ * libpng version 1.7.0alpha10 - January 21, 2013
  * Copyright (c) 1998-2013 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 1.7.0alpha09 - January 21, 2013: Glenn
+ *   libpng versions 0.97, January 1998, through 1.7.0alpha10 - January 21, 2013: Glenn
  *   See also "Contributing Authors", below.
  *
  * Note about libpng version numbers:
@@ -167,7 +167,7 @@
  *    1.5.7rc01-03            15    10507  15.so.15.7[.0]
  *    1.5.7                   15    10507  15.so.15.7[.0]
  *    1.6.0beta01-37          16    10600  16.so.16.0[.0]
- *    1.7.0alpha01-09         17    10700  17.so.17.0[.0]
+ *    1.7.0alpha01-10         17    10700  17.so.17.0[.0]
  *
  *   Henceforth the source version will match the shared-library major
  *   and minor numbers; the shared-library major version number will be
@@ -199,7 +199,7 @@
  *
  * This code is released under the libpng license.
  *
- * libpng versions 1.2.6, August 15, 2004, through 1.7.0alpha09, January 21, 2013, are
+ * libpng versions 1.2.6, August 15, 2004, through 1.7.0alpha10, January 21, 2013, are
  * Copyright (c) 2004, 2006-2013 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:
@@ -317,7 +317,7 @@
  *    an official declaration.
  *
  *    This is your unofficial assurance that libpng from version 0.71 and
- *    upward through 1.7.0alpha09 are Y2K compliant.  It is my belief that
+ *    upward through 1.7.0alpha10 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
@@ -377,9 +377,9 @@
  */
 
 /* Version information for png.h - this should match the version in png.c */
-#define PNG_LIBPNG_VER_STRING "1.7.0alpha09"
+#define PNG_LIBPNG_VER_STRING "1.7.0alpha10"
 #define PNG_HEADER_VERSION_STRING \
-     " libpng version 1.7.0alpha09 - January 21, 2013\n"
+     " libpng version 1.7.0alpha10 - January 21, 2013\n"
 
 #define PNG_LIBPNG_VER_SONUM   17
 #define PNG_LIBPNG_VER_DLLNUM  17
@@ -393,7 +393,7 @@
  * PNG_LIBPNG_VER_STRING, omitting any leading zero:
  */
 
-#define PNG_LIBPNG_VER_BUILD  09
+#define PNG_LIBPNG_VER_BUILD  10
 
 /* Release Status */
 #define PNG_LIBPNG_BUILD_ALPHA    1
@@ -523,7 +523,7 @@ 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_7_0alpha09;
+typedef char* png_libpng_version_1_7_0alpha10;
 
 /* Basic control structions.  Read libpng-manual.txt or libpng.3 for more info.
  *
diff --git a/pngconf.h b/pngconf.h
index fcfdd0a02..d6e872a7b 100644
--- a/pngconf.h
+++ b/pngconf.h
@@ -1,7 +1,7 @@
 
 /* pngconf.h - machine configurable file for libpng
  *
- * libpng version 1.7.0alpha09 - January 21, 2013
+ * libpng version 1.7.0alpha10 - January 21, 2013
  *
  * Copyright (c) 1998-2013 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
diff --git a/pngtest.c b/pngtest.c
index c23cf50e1..2a49a6635 100644
--- a/pngtest.c
+++ b/pngtest.c
@@ -1946,4 +1946,4 @@ main(void)
 #endif
 
 /* Generate a compiler error if there is an old png.h in the search path. */
-typedef png_libpng_version_1_7_0alpha09 Your_png_h_is_not_version_1_7_0alpha09;
+typedef png_libpng_version_1_7_0alpha10 Your_png_h_is_not_version_1_7_0alpha10;
diff --git a/projects/vstudio/readme.txt b/projects/vstudio/readme.txt
index c7673211e..3b65e3709 100644
--- a/projects/vstudio/readme.txt
+++ b/projects/vstudio/readme.txt
@@ -1,7 +1,7 @@
 
 VisualStudio instructions
 
-libpng version 1.7.0alpha09 - January 21, 2013
+libpng version 1.7.0alpha10 - January 21, 2013
 
 Copyright (c) 1998-2010 Glenn Randers-Pehrson
 
diff --git a/projects/vstudio/zlib.props b/projects/vstudio/zlib.props
index 98129e9bf..52717b7dc 100644
--- a/projects/vstudio/zlib.props
+++ b/projects/vstudio/zlib.props
@@ -2,7 +2,7 @@
 <!--
  * zlib.props - location of zlib source
  *
- * libpng version 1.7.0alpha09 - January 21, 2013
+ * libpng version 1.7.0alpha10 - January 21, 2013
  *
  * Copyright (c) 1998-2011 Glenn Randers-Pehrson
  *
diff --git a/scripts/README.txt b/scripts/README.txt
index 41f891872..d8b343a71 100644
--- a/scripts/README.txt
+++ b/scripts/README.txt
@@ -1,9 +1,9 @@
 
-Makefiles for  libpng version 1.7.0alpha09 - January 21, 2013
+Makefiles for  libpng version 1.7.0alpha10 - January 21, 2013
 
 pnglibconf.h.prebuilt       =>  Stores configuration settings
  makefile.linux    =>  Linux/ELF makefile
-                       (gcc, creates libpng17.so.17.1.7.0alpha09)
+                       (gcc, creates libpng17.so.17.1.7.0alpha10)
  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 libpng17.so.17.1.7.0alpha09)
+                       (gcc, creates libpng17.so.17.1.7.0alpha10)
  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 libpng17.so.17.1.7.0alpha09)
+                       creates libpng17.so.17.1.7.0alpha10)
  makefile.sgi      =>  Silicon Graphics IRIX makefile (cc, creates static lib)
  makefile.solaris  =>  Solaris 2.X makefile (gcc,
-                       creates libpng17.so.17.1.7.0alpha09)
+                       creates libpng17.so.17.1.7.0alpha10)
  makefile.so9      =>  Solaris 9 makefile (gcc,
-                       creates libpng17.so.17.1.7.0alpha09)
+                       creates libpng17.so.17.1.7.0alpha10)
  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 b203d2517..8716e4066 100755
--- a/scripts/libpng-config-head.in
+++ b/scripts/libpng-config-head.in
@@ -11,7 +11,7 @@
 
 # Modeled after libxml-config.
 
-version=1.7.0alpha09
+version=1.7.0alpha10
 prefix=""
 libdir=""
 libs=""
diff --git a/scripts/libpng.pc.in b/scripts/libpng.pc.in
index 3f16ae683..17303e147 100644
--- a/scripts/libpng.pc.in
+++ b/scripts/libpng.pc.in
@@ -5,6 +5,6 @@ includedir=@includedir@/libpng17
 
 Name: libpng
 Description: Loads and saves PNG files
-Version: 1.7.0alpha09
+Version: 1.7.0alpha10
 Libs: -L${libdir} -lpng17
 Cflags: -I${includedir}
diff --git a/scripts/makefile.ne12bsd b/scripts/makefile.ne12bsd
index 3c00cb2b4..0bf11fe02 100644
--- a/scripts/makefile.ne12bsd
+++ b/scripts/makefile.ne12bsd
@@ -17,7 +17,7 @@ INCSDIR=${LOCALBASE}/include/libpng17
 
 LIB=	png17
 SHLIB_MAJOR=	0
-SHLIB_MINOR=	1.7.0alpha09
+SHLIB_MINOR=	1.7.0alpha10
 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 91065d2bc..308f3947b 100644
--- a/scripts/makefile.netbsd
+++ b/scripts/makefile.netbsd
@@ -17,7 +17,7 @@ INCSDIR=${LOCALBASE}/include
 
 LIB=	png
 SHLIB_MAJOR=	17
-SHLIB_MINOR=	1.7.0alpha09
+SHLIB_MINOR=	1.7.0alpha10
 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 d7c9e51f2..454887e34 100644
--- a/scripts/makefile.openbsd
+++ b/scripts/makefile.openbsd
@@ -11,7 +11,7 @@ LIBDIR=	${PREFIX}/lib
 MANDIR= ${PREFIX}/man/cat
 
 SHLIB_MAJOR=	17
-SHLIB_MINOR=	1.7.0alpha09
+SHLIB_MINOR=	1.7.0alpha10
 
 LIB=	png
 SRCS=	png.c pngerror.c pngget.c pngmem.c pngpread.c \
diff --git a/scripts/pnglibconf.h.prebuilt b/scripts/pnglibconf.h.prebuilt
index d8903c874..55e73aa84 100644
--- a/scripts/pnglibconf.h.prebuilt
+++ b/scripts/pnglibconf.h.prebuilt
@@ -1,6 +1,6 @@
 /* pnglibconf.h - library build configuration */
 
-/* libpng version 1.7.0alpha09 - January 21, 2013 */
+/* libpng version 1.7.0alpha10 - January 21, 2013 */
 
 /* Copyright (c) 1998-2013 Glenn Randers-Pehrson */
 
diff --git a/scripts/symbols.def b/scripts/symbols.def
index 943622dc6..f030919c2 100644
--- a/scripts/symbols.def
+++ b/scripts/symbols.def
@@ -5,7 +5,7 @@
 LIBRARY
 
 EXPORTS
-;Version 1.7.0alpha09
+;Version 1.7.0alpha10
  png_access_version_number @1
  png_set_sig_bytes @2
  png_sig_cmp @3