Imported from libpng-1.2.27rc01.tar

Imported from libpng-1.2.27beta06.tar
Imported from libpng-1.2.27beta05.tar
2025-07-10 18:04:09 +02:00 · 2009-04-06 16:16:46 -05:00 · 2009-04-06 16:16:43 -05:00 · 2009-04-06 16:16:41 -05:00 · 2009-04-06 16:16:38 -05:00 · 2009-04-06 16:16:36 -05:00
65 changed files with 12199 additions and 18600 deletions
--- a/90
+++ b/90
@@ -1,5 +1,5 @@

-Libpng 1.2.25beta03 - January 22, 2008
+Libpng 1.2.27rc01 - April 23, 2008

 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.
@@ -9,72 +9,72 @@ Files available for download:
 Source files with LF line endings (for Unix/Linux) and with a
 "configure" script

-   libpng-1.2.25beta03.tar.gz
-   libpng-1.2.25beta03.tar.bz2
+   libpng-1.2.27rc01.tar.gz
+   libpng-1.2.27rc01.tar.lzma
+     (Get the lzma codec from <http://tukaani.org/lzma>).
+   libpng-1.2.27rc01.tar.bz2

 Source files with LF line endings (for Unix/Linux) without the
 "configure" script

-   libpng-1.2.25beta03-no-config.tar.gz
-   libpng-1.2.25beta03-no-config.tar.bz2
+   libpng-1.2.27rc01-no-config.tar.gz
+   libpng-1.2.27rc01-no-config.tar.lzma
+   libpng-1.2.27rc01-no-config.tar.bz2

 Source files with CRLF line endings (for Windows), without the
 "configure" script

-   lp1225b03.zip
-   lp1225b03.tar.bz2
+   lp1227r01.zip
+   lp1227r01.7z
+   lp1227r01.tar.bz2

 Project files

-   libpng-1.2.25beta03-project-netware.zip
-   libpng-1.2.25beta03-project-wince.zip
+   libpng-1.2.27rc01-project-netware.zip
+   libpng-1.2.27rc01-project-wince.zip

 Other information:

-   libpng-1.2.25beta03-README.txt
-   libpng-1.2.25beta03-KNOWNBUGS.txt
-   libpng-1.2.25beta03-LICENSE.txt
-   libpng-1.2.25beta03-Y2K-compliance.txt
+   libpng-1.2.27rc01-README.txt
+   libpng-1.2.27rc01-KNOWNBUGS.txt
+   libpng-1.2.27rc01-LICENSE.txt
+   libpng-1.2.27rc01-Y2K-compliance.txt
+   libpng-1.2.27rc01-[previous version]-diff.txt

-Changes since the last public release (1.2.23):
+Changes since the last public release (1.2.26):

+version 1.2.27beta01 [April 12, 2008]
+  Fixed bug (introduced in libpng-1.0.5h) with handling zero-length
+    unknown chunks.
+  Added more information about png_set_keep_unknown_chunks() to the
+    documetation.
+  Reject tRNS chunk with out-of-range samples instead of masking off
+    the invalid high bits as done in since libpng-1.2.19beta5.

-version 1.2.24beta01 [November 19, 2007]
-  Moved misplaced test for malloc failure in png_set_sPLT().  This bug was
-    introduced in libpng-1.2.20beta01.
-  Ifdef out avg_row etc from png.h and pngwrite.c when PNG_NO_WRITE_FILTER
-  Do not use png_ptr->free_fn and png_ptr->mem_fn in png_destroy_read_struct()
-    when png_ptr is NULL (Marshall Clow).
-  Updated handling of symbol prefixes in Makefile.am and configure.ac (Mike
-    Frysinger).
+version 1.2.27beta02 [April 13, 2008]
+  Revised documentation about unknown chunk and user chunk handling.
+  Keep tRNS chunk with out-of-range samples and issue a png_warning().

-version 1.2.24beta02 [November 30, 2007]
-  Removed a useless test and fixed incorrect test in png_set_cHRM_fixed()
-    (David Hill).
+version 1.2.27beta03 [April 14, 2008]
+  Added check for NULL ptr in TURBOC version of png_free_default().
+  Removed several unnecessary checks for NULL before calling png_free().
+  Revised png_set_tRNS() so that calling it twice removes and invalidates
+    the previous call.
+  Revised pngtest to check for out-of-range tRNS samples.

-version 1.2.24rc01 [December 7, 2007]
-  No changes.
+version 1.2.27beta04 [April 18, 2008]
+  Added AC_LIBTOOL_WIN32_DLL to configure.ac
+  Rebuilt Makefile.in, aclocal.m4, and configure with autoconf-2.62

-version 1.2.24     [December 14, 2007]]
-  Make sure not to redefine _BSD_SOURCE in pngconf.h
-  Revised gather.sh and makefile.std in contrib/pngminim to avoid compiling
-    unused files.
+version 1.2.27beta05 [April 19, 2008]
+  Added MAINTEINERCLEANFILES variable to Makefile.am

-version 1.2.25beta01 [January 7, 2008]
-  Fixed bug with unknown chunk handling, introduced in version 1.2.17rc2
+version 1.2.27beta06 [April 21, 2008]
+  Avoid changing color_type from GRAY to RGB by
+    png_set_expand_gray_1_2_4_to_8().

-version 1.2.25beta02 [January 10, 2008]
-  Prevent gamma from being applied twice.
-
-version 1.2.25rc01 [January 17, 2001]
-  No changes.
-
-version 1.2.25beta03 [January 22, 2008]
-  Fixed some continue-after-malloc-failure errors in pngset.c (David Hill)
-  Check for info_ptr == NULL in png_read_info() and png_process_data().
-  Check for possible use of NULL user_png_ver[] in png_create_read_struct().
-  Return from png_destroy_read_struct() if png_ptr_ptr is NULL.
-  Fix overflow of "msg" in png_decompres_chunk().
+version 1.2.27rc01 [April 23, 2008]
+  Fix broken URL for rfc2083 in png.5 and libpng-*.txt

 Send comments/corrections/commendations to png-mng-implement at lists.sf.net

--- a/90
+++ b/90
@@ -2038,7 +2038,7 @@ version 1.2.25beta01 [January 7, 2008]
 version 1.2.25beta02 [January 10, 2008]
  Prevent gamma from being applied twice.

-version 1.2.25rc01 [January 17, 2001]
+version 1.2.25rc01 [January 17, 2008]
  No changes.

 version 1.2.25beta03 [January 22, 2008]
@@ -2048,7 +2048,93 @@ version 1.2.25beta03 [January 22, 2008]
  Change "if (swidth == NULL)" to "if (sheight == NULL)" in png_handle_sCAL
    (bug introduced in libpng-1.2.4/1.0.13).
  Return from png_destroy_read_struct() if png_ptr_ptr is NULL.
-  Fix overflow of "msg" in png_decompres_chunk().
+  Fix overflow of "msg" in png_decompress_chunk().
+
+version 1.2.25beta04 [January 26, 2008]
+  Work around Coverity bug report by slightly refactoring
+    png_read_push_finish_row()
+
+version 1.2.25beta05 [January 31, 2008]
+  Added libpng-1.2.25beta05.tar.lzma to distribution.  Get the lzma codec
+    from <http://tukaani.org/lzma>.
+  Added lp1225b05.7z to distribution.  Get the 7-zip decoder from
+    from <http://www.7-zip.org>.
+  Fixed some broken links in the README file.
+
+version 1.2.25beta06 [February 6, 2008]
+  Refactored png_read_push_finish_row() again, trying to satisfy Coverity.
+  Fixed potential NULL dereference of png_ptr in png_destroy_write_struct();
+  clarified potential NULL dereference of png_ptr in png_destroy_read_struct();
+  fixed potential NULL dereference of info_ptr in png_handle_bKGD();
+  fixed potential NULL dereference of user_png_ver[] in
+    png_create_write_struct_2(). (Coverity)
+
+version 1.2.25rc02 [February 10, 2008]
+  Reset png_ptr->pass in png_read_push_finish_row() before break.
+  Changed "pass" from png_byte to int.
+
+version 1.2.25 and 1.0.31 [February 18, 2008]
+  No changes.
+
+version 1.2.26beta01 [February 21, 2008]
+  Added missing "(" in pngmem.c.  Bug introduced in libpng-1.2.2/1.0.13
+
+version 1.2.26beta02 [March 12, 2008]
+  Refined error message returned from deflateInit2 in pngwutil.c
+  Check IHDR length in png_push_read_chunk() before saving it.
+
+version 1.2.26beta03 [March 16, 2008]
+  Revised contrib/gregbook to handle premature end-of-file and file
+    read errors correctly.
+
+version 1.2.26beta04 [March 18, 2008]
+  Free png_ptr->big_row_buf and png_ptr->prev_row before allocating
+    new copies in png_read_start_row().  Bug introduced in libpng-1.2.22.
+
+version 1.2.26beta05 [March 19, 2008]
+  Removed extra png_free() added in libpng-1.2.26beta04.
+
+version 1.2.26beta06 [March 19, 2008]
+  Avoid reallocating big_row_buf and prev_row when the size does not increase.
+
+version 1.2.26rc01 [March 26, 2008]
+  Ifdef out some code that is unused when interlacing is not supported.
+
+versions 1.0.32 and 1.2.26 [April 2, 2008]
+  No changes.
+
+version 1.2.27beta01 [April 12, 2008]
+  Fixed bug (introduced in libpng-1.0.5h) with handling zero-length
+    unknown chunks.
+  Added more information about png_set_keep_unknown_chunks() to the
+    documetation.
+  Reject tRNS chunk with out-of-range samples instead of masking off
+    the invalid high bits as done in since libpng-1.2.19beta5.
+
+version 1.2.27beta02 [April 13, 2008]
+  Revised documentation about unknown chunk and user chunk handling.
+  Keep tRNS chunk with out-of-range samples and issue a png_warning().
+
+version 1.2.27beta03 [April 14, 2008]
+  Added check for NULL ptr in TURBOC version of png_free_default().
+  Removed several unnecessary checks for NULL before calling png_free().
+  Revised png_set_tRNS() so that calling it twice removes and invalidates
+    the previous call.
+  Revised pngtest to check for out-of-range tRNS samples.
+
+version 1.2.27beta04 [April 18, 2008]
+  Added AC_LIBTOOL_WIN32_DLL to configure.ac
+  Rebuilt Makefile.in, aclocal.m4, and configure with autoconf-2.62
+
+version 1.2.27beta05 [April 19, 2008]
+  Added MAINTEINERCLEANFILES variable to Makefile.am
+
+version 1.2.27beta06 [April 21, 2008]
+  Avoid changing color_type from GRAY to RGB by
+    png_set_expand_gray_1_2_4_to_8().
+
+version 1.2.27rc01 [April 23, 2008]
+  Fix broken URL for rfc2083 in png.5 and libpng-*.txt

 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 (subscription required; visit
--- a/16
+++ b/16
@@ -1,5 +1,5 @@

-Installing libpng version 1.2.25beta03 - January 22, 2008
+Installing libpng version 1.2.27rc01 - April 23, 2008

 On Unix/Linux and similar systems, you can simply type

@@ -44,7 +44,7 @@ to have access to the zlib.h and zconf.h include files that
 correspond to the version of zlib that's installed.

 You can rename the directories that you downloaded (they
-might be called "libpng-1.2.25beta03" or "lpng109" and "zlib-1.2.1"
+might be called "libpng-1.2.27rc01" or "lpng109" and "zlib-1.2.1"
 or "zlib121") so that you have directories called "zlib" and "libpng".

 Your directory structure should look like this:
@@ -101,9 +101,9 @@ include
 CMakeLists.txt    =>  "cmake" script
 makefile.std      =>  Generic UNIX makefile (cc, creates static libpng.a)
 makefile.elf      =>  Linux/ELF makefile symbol versioning,
-                       gcc, creates libpng12.so.0.1.2.25beta03)
+                       gcc, creates libpng12.so.0.1.2.27rc01)
 makefile.linux    =>  Linux/ELF makefile
-                       (gcc, creates libpng12.so.0.1.2.25beta03)
+                       (gcc, creates libpng12.so.0.1.2.27rc01)
 makefile.gcc      =>  Generic makefile (gcc, creates static libpng.a)
 makefile.knr      =>  Archaic UNIX Makefile that converts files with
                       ansi2knr (Requires ansi2knr.c from
@@ -125,14 +125,14 @@ include
 makefile.openbsd  =>  OpenBSD makefile
 makefile.sgi      =>  Silicon Graphics IRIX makefile (cc, creates static lib)
 makefile.sggcc    =>  Silicon Graphics (gcc,
-                       creates libpng12.so.0.1.2.25beta03)
+                       creates libpng12.so.0.1.2.27rc01)
 makefile.sunos    =>  Sun makefile
 makefile.solaris  =>  Solaris 2.X makefile (gcc,
-                       creates libpng12.so.0.1.2.25beta03)
+                       creates libpng12.so.0.1.2.27rc01)
 makefile.solaris-x86 =>  Solaris/intelMMX 2.X makefile (gcc,
-                       creates libpng12.so.0.1.2.25beta03)
+                       creates libpng12.so.0.1.2.27rc01)
 makefile.so9      =>  Solaris 9 makefile (gcc,
-                       creates libpng12.so.0.1.2.25beta03)
+                       creates libpng12.so.0.1.2.27rc01)
 makefile.32sunu   =>  Sun Ultra 32-bit makefile
 makefile.64sunu   =>  Sun Ultra 64-bit makefile
 makefile.sco      =>  For SCO OSr5  ELF and Unixware 7 with Native cc
--- a/2
+++ b/2
@@ -1,5 +1,5 @@

-Known bugs in libpng version 1.2.25beta03
+Known bugs in libpng version 1.2.27rc01

 1. February 23, 2006: The custom makefiles don't build libpng with -lz.

--- a/4
+++ b/4
@@ -8,7 +8,7 @@ COPYRIGHT NOTICE, DISCLAIMER, and LICENSE:
 If you modify libpng you may insert additional notices immediately following
 this sentence.

-libpng versions 1.2.6, August 15, 2004, through 1.2.25beta03, January 22, 2008, are
+libpng versions 1.2.6, August 15, 2004, through 1.2.27rc01, April 23, 2008, are
 Copyright (c) 2004, 2006-2008 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
@@ -106,4 +106,4 @@ certification mark of the Open Source Initiative.

 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-January 22, 2008
+April 23, 2008
--- a/Makefile.am
+++ b/Makefile.am
@@ -86,11 +86,14 @@ EXTRA_DIST= \
 	${srcdir}/contrib/pngsuite/* \
 	${srcdir}/contrib/visupng/* \
 	$(TESTS) \
-	example.c libpng.txt pngvcrd.c 
+	example.c libpng-1.2.27rc01.txt pngvcrd.c 

 CLEANFILES= pngout.png libpng12.pc libpng12-config libpng.vers \
 libpng.sym

+MAINTAINERCLEANFILES = Makefile.in aclocal.m4 config.guess config.h.in \
+config.sub configure depcomp install-sh ltmain.sh missing
+
 $(PNGLIB_BASENAME).pc: libpng.pc
 	cp libpng.pc $@

--- a/Makefile.in
+++ b/Makefile.in
@@ -1,8 +1,8 @@
-# Makefile.in generated by automake 1.9.6 from Makefile.am.
+# Makefile.in generated by automake 1.10.1 from Makefile.am.
 # @configure_input@

 # Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
-# 2003, 2004  Free Software Foundation, Inc.
+# 2003, 2004, 2005, 2006, 2007, 2008  Free Software Foundation, Inc.
 # This Makefile.in is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
@@ -27,16 +27,10 @@



-SOURCES = $(libpng_la_SOURCES) $(libpng12_la_SOURCES) $(pngtest_SOURCES)
-
-srcdir = @srcdir@
-top_srcdir = @top_srcdir@
 VPATH = @srcdir@
 pkgdatadir = $(datadir)/@PACKAGE@
 pkglibdir = $(libdir)/@PACKAGE@
-top_builddir = .
 am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd
-INSTALL = @INSTALL@
 install_sh_DATA = $(install_sh) -c -m 644
 install_sh_PROGRAM = $(install_sh) -c
 install_sh_SCRIPT = $(install_sh) -c
@@ -48,24 +42,25 @@ POST_INSTALL = :
 NORMAL_UNINSTALL = :
 PRE_UNINSTALL = :
 POST_UNINSTALL = :
+build_triplet = @build@
 host_triplet = @host@
 check_PROGRAMS = pngtest$(EXEEXT)
@HAVE_LD_VERSION_SCRIPT_TRUE@am__append_1 = -Wl,--version-script=libpng.vers
@HAVE_LD_VERSION_SCRIPT_FALSE@am__append_2 = -export-symbols libpng.sym
+subdir = .
 DIST_COMMON = README $(am__configure_deps) $(dist_man_MANS) \
 	$(pkginclude_HEADERS) $(srcdir)/Makefile.am \
 	$(srcdir)/Makefile.in $(srcdir)/config.h.in \
 	$(top_srcdir)/configure $(top_srcdir)/scripts/libpng-config.in \
 	$(top_srcdir)/scripts/libpng.pc-configure.in INSTALL TODO \
-	compile config.guess config.sub depcomp install-sh ltmain.sh \
-	missing mkinstalldirs
-subdir = .
+	config.guess config.sub depcomp install-sh ltmain.sh missing \
+	mkinstalldirs
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/configure.ac
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 am__CONFIG_DISTCLEAN_FILES = config.status config.cache config.log \
- configure.lineno configure.status.lineno
+ configure.lineno config.status.lineno
 mkinstalldirs = $(SHELL) $(top_srcdir)/mkinstalldirs
 CONFIG_HEADER = config.h
 CONFIG_CLEAN_FILES = libpng.pc libpng-config
@@ -90,6 +85,9 @@ am__objects_1 = libpng_la-png.lo libpng_la-pngset.lo \
 	libpng_la-pngerror.lo libpng_la-pngpread.lo
 am_libpng_la_OBJECTS = $(am__objects_1)
 libpng_la_OBJECTS = $(am_libpng_la_OBJECTS)
+libpng_la_LINK = $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) \
+	$(LIBTOOLFLAGS) --mode=link $(CCLD) $(AM_CFLAGS) $(CFLAGS) \
+	$(libpng_la_LDFLAGS) $(LDFLAGS) -o $@
 libpng12_la_LIBADD =
 am_libpng12_la_OBJECTS = libpng12_la-png.lo libpng12_la-pngset.lo \
 	libpng12_la-pngget.lo libpng12_la-pngrutil.lo \
@@ -100,22 +98,26 @@ am_libpng12_la_OBJECTS = libpng12_la-png.lo libpng12_la-pngset.lo \
 	libpng12_la-pngmem.lo libpng12_la-pngerror.lo \
 	libpng12_la-pngpread.lo
 libpng12_la_OBJECTS = $(am_libpng12_la_OBJECTS)
+libpng12_la_LINK = $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) \
+	$(LIBTOOLFLAGS) --mode=link $(CCLD) $(AM_CFLAGS) $(CFLAGS) \
+	$(libpng12_la_LDFLAGS) $(LDFLAGS) -o $@
 am_pngtest_OBJECTS = pngtest.$(OBJEXT)
 pngtest_OBJECTS = $(am_pngtest_OBJECTS)
 pngtest_DEPENDENCIES = libpng12.la
 binSCRIPT_INSTALL = $(INSTALL_SCRIPT)
 SCRIPTS = $(bin_SCRIPTS)
-DEFAULT_INCLUDES = -I. -I$(srcdir) -I.
+DEFAULT_INCLUDES = -I.@am__isrc@
 depcomp = $(SHELL) $(top_srcdir)/depcomp
 am__depfiles_maybe = depfiles
 COMPILE = $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) \
 	$(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)
-LTCOMPILE = $(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) \
-	$(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) \
-	$(AM_CFLAGS) $(CFLAGS)
+LTCOMPILE = $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \
+	--mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) \
+	$(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)
 CCLD = $(CC)
-LINK = $(LIBTOOL) --mode=link --tag=CC $(CCLD) $(AM_CFLAGS) $(CFLAGS) \
-	$(AM_LDFLAGS) $(LDFLAGS) -o $@
+LINK = $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \
+	--mode=link $(CCLD) $(AM_CFLAGS) $(CFLAGS) $(AM_LDFLAGS) \
+	$(LDFLAGS) -o $@
 SOURCES = $(libpng_la_SOURCES) $(libpng12_la_SOURCES) \
 	$(pngtest_SOURCES)
 DIST_SOURCES = $(libpng_la_SOURCES) $(libpng12_la_SOURCES) \
@@ -142,16 +144,12 @@ GZIP_ENV = --best
 distuninstallcheck_listfiles = find . -type f -print
 distcleancheck_listfiles = find . -type f -print

-# Avoid depending upon Character Ranges.
-AN = '_abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789'
-
 #distribute headers in /usr/include/libpng/*
 pkgincludedir = $(includedir)/$(PNGLIB_BASENAME)
 ACLOCAL = @ACLOCAL@
-AMDEP_FALSE = @AMDEP_FALSE@
-AMDEP_TRUE = @AMDEP_TRUE@
 AMTAR = @AMTAR@
 AR = @AR@
+AS = @AS@
 AUTOCONF = @AUTOCONF@
 AUTOHEADER = @AUTOHEADER@
 AUTOMAKE = @AUTOMAKE@
@@ -161,28 +159,25 @@ CCDEPMODE = @CCDEPMODE@
 CFLAGS = @CFLAGS@
 CPP = @CPP@
 CPPFLAGS = @CPPFLAGS@
-CXX = @CXX@
-CXXCPP = @CXXCPP@
-CXXDEPMODE = @CXXDEPMODE@
-CXXFLAGS = @CXXFLAGS@
 CYGPATH_W = @CYGPATH_W@
 DEFS = @DEFS@
 DEPDIR = @DEPDIR@
-ECHO = @ECHO@
+DLLTOOL = @DLLTOOL@
+DSYMUTIL = @DSYMUTIL@
+DUMPBIN = @DUMPBIN@
 ECHO_C = @ECHO_C@
 ECHO_N = @ECHO_N@
 ECHO_T = @ECHO_T@
 EGREP = @EGREP@
 EXEEXT = @EXEEXT@
-F77 = @F77@
-FFLAGS = @FFLAGS@
+FGREP = @FGREP@
 GREP = @GREP@
-HAVE_LD_VERSION_SCRIPT_FALSE = @HAVE_LD_VERSION_SCRIPT_FALSE@
-HAVE_LD_VERSION_SCRIPT_TRUE = @HAVE_LD_VERSION_SCRIPT_TRUE@
+INSTALL = @INSTALL@
 INSTALL_DATA = @INSTALL_DATA@
 INSTALL_PROGRAM = @INSTALL_PROGRAM@
 INSTALL_SCRIPT = @INSTALL_SCRIPT@
 INSTALL_STRIP_PROGRAM = @INSTALL_STRIP_PROGRAM@
+LD = @LD@
 LDFLAGS = @LDFLAGS@
 LIBOBJS = @LIBOBJS@
 LIBPNG_DEFINES = @LIBPNG_DEFINES@
@@ -192,9 +187,11 @@ LIBTOOL = @LIBTOOL@
 LN_S = @LN_S@
 LTLIBOBJS = @LTLIBOBJS@
 MAINT = @MAINT@
-MAINTAINER_MODE_FALSE = @MAINTAINER_MODE_FALSE@
-MAINTAINER_MODE_TRUE = @MAINTAINER_MODE_TRUE@
 MAKEINFO = @MAKEINFO@
+MKDIR_P = @MKDIR_P@
+NM = @NM@
+NMEDIT = @NMEDIT@
+OBJDUMP = @OBJDUMP@
 OBJEXT = @OBJEXT@
 PACKAGE = @PACKAGE@
 PACKAGE_BUGREPORT = @PACKAGE_BUGREPORT@
@@ -206,7 +203,6 @@ PATH_SEPARATOR = @PATH_SEPARATOR@
 PNGLIB_MAJOR = @PNGLIB_MAJOR@
 PNGLIB_MINOR = @PNGLIB_MINOR@
 PNGLIB_RELEASE = @PNGLIB_RELEASE@
-SYMBOL_PREFIX = @SYMBOL_PREFIX@
 PNGLIB_VERSION = @PNGLIB_VERSION@
 POW_LIB = @POW_LIB@
 RANLIB = @RANLIB@
@@ -214,14 +210,14 @@ SED = @SED@
 SET_MAKE = @SET_MAKE@
 SHELL = @SHELL@
 STRIP = @STRIP@
+SYMBOL_PREFIX = @SYMBOL_PREFIX@
 VERSION = @VERSION@
+abs_builddir = @abs_builddir@
+abs_srcdir = @abs_srcdir@
+abs_top_builddir = @abs_top_builddir@
+abs_top_srcdir = @abs_top_srcdir@
 ac_ct_CC = @ac_ct_CC@
-ac_ct_CXX = @ac_ct_CXX@
-ac_ct_F77 = @ac_ct_F77@
-am__fastdepCC_FALSE = @am__fastdepCC_FALSE@
-am__fastdepCC_TRUE = @am__fastdepCC_TRUE@
-am__fastdepCXX_FALSE = @am__fastdepCXX_FALSE@
-am__fastdepCXX_TRUE = @am__fastdepCXX_TRUE@
+ac_ct_DUMPBIN = @ac_ct_DUMPBIN@
 am__include = @am__include@
 am__leading_dot = @am__leading_dot@
 am__quote = @am__quote@
@@ -236,6 +232,7 @@ build_alias = @build_alias@
 build_cpu = @build_cpu@
 build_os = @build_os@
 build_vendor = @build_vendor@
+builddir = @builddir@
 compatlib = @compatlib@
 datadir = @datadir@
 datarootdir = @datarootdir@
@@ -255,6 +252,7 @@ libdir = @libdir@
 libexecdir = @libexecdir@
 localedir = @localedir@
 localstatedir = @localstatedir@
+lt_ECHO = @lt_ECHO@
 mandir = @mandir@
 mkdir_p = @mkdir_p@
 oldincludedir = @oldincludedir@
@@ -268,8 +266,12 @@ program_transform_name = @program_transform_name@
 psdir = @psdir@
 sbindir = @sbindir@
 sharedstatedir = @sharedstatedir@
+srcdir = @srcdir@
 sysconfdir = @sysconfdir@
 target_alias = @target_alias@
+top_build_prefix = @top_build_prefix@
+top_builddir = @top_builddir@
+top_srcdir = @top_srcdir@
 PNGLIB_BASENAME = libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@

 # libpng does not follow GNU file name conventions
@@ -306,6 +308,9 @@ libpng_la_LDFLAGS = -rpath '$(libdir)' -no-undefined -export-dynamic \
@HAVE_LD_VERSION_SCRIPT_FALSE@libpng12_la_DEPENDENCIES = libpng.sym
@HAVE_LD_VERSION_SCRIPT_TRUE@libpng12_la_DEPENDENCIES = libpng.vers
 libpng_la_DEPENDENCIES = $(libpng12_la_DEPENDENCIES)
+
+# Avoid depending upon Character Ranges.
+AN = '_abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789'
 pkginclude_HEADERS = png.h pngconf.h
 pkgconfig_DATA = libpng12.pc

@@ -325,11 +330,14 @@ EXTRA_DIST = \
 	${srcdir}/contrib/pngsuite/* \
 	${srcdir}/contrib/visupng/* \
 	$(TESTS) \
-	example.c libpng.txt pngvcrd.c 
+	example.c libpng-1.2.27beta05.txt pngvcrd.c 

 CLEANFILES = pngout.png libpng12.pc libpng12-config libpng.vers \
 libpng.sym

+MAINTAINERCLEANFILES = Makefile.in aclocal.m4 config.guess config.h.in \
+config.sub configure depcomp install-sh ltmain.sh missing
+
 all: config.h
 	$(MAKE) $(AM_MAKEFLAGS) all-am

@@ -372,7 +380,7 @@ $(ACLOCAL_M4): @MAINTAINER_MODE_TRUE@ $(am__aclocal_m4_deps)
 config.h: stamp-h1
 	@if test ! -f $@; then \
 	  rm -f stamp-h1; \
-	  $(MAKE) stamp-h1; \
+	  $(MAKE) $(AM_MAKEFLAGS) stamp-h1; \
 	else :; fi

 stamp-h1: $(srcdir)/config.h.in $(top_builddir)/config.status
@@ -391,21 +399,21 @@ libpng-config: $(top_builddir)/config.status $(top_srcdir)/scripts/libpng-config
 	cd $(top_builddir) && $(SHELL) ./config.status $@
 install-libLTLIBRARIES: $(lib_LTLIBRARIES)
 	@$(NORMAL_INSTALL)
-	test -z "$(libdir)" || $(mkdir_p) "$(DESTDIR)$(libdir)"
+	test -z "$(libdir)" || $(MKDIR_P) "$(DESTDIR)$(libdir)"
 	@list='$(lib_LTLIBRARIES)'; for p in $$list; do \
 	  if test -f $$p; then \
 	    f=$(am__strip_dir) \
-	    echo " $(LIBTOOL) --mode=install $(libLTLIBRARIES_INSTALL) $(INSTALL_STRIP_FLAG) '$$p' '$(DESTDIR)$(libdir)/$$f'"; \
-	    $(LIBTOOL) --mode=install $(libLTLIBRARIES_INSTALL) $(INSTALL_STRIP_FLAG) "$$p" "$(DESTDIR)$(libdir)/$$f"; \
+	    echo " $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=install $(libLTLIBRARIES_INSTALL) $(INSTALL_STRIP_FLAG) '$$p' '$(DESTDIR)$(libdir)/$$f'"; \
+	    $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=install $(libLTLIBRARIES_INSTALL) $(INSTALL_STRIP_FLAG) "$$p" "$(DESTDIR)$(libdir)/$$f"; \
 	  else :; fi; \
 	done

 uninstall-libLTLIBRARIES:
 	@$(NORMAL_UNINSTALL)
-	@set -x; list='$(lib_LTLIBRARIES)'; for p in $$list; do \
+	@list='$(lib_LTLIBRARIES)'; for p in $$list; do \
 	  p=$(am__strip_dir) \
-	  echo " $(LIBTOOL) --mode=uninstall rm -f '$(DESTDIR)$(libdir)/$$p'"; \
-	  $(LIBTOOL) --mode=uninstall rm -f "$(DESTDIR)$(libdir)/$$p"; \
+	  echo " $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=uninstall rm -f '$(DESTDIR)$(libdir)/$$p'"; \
+	  $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=uninstall rm -f "$(DESTDIR)$(libdir)/$$p"; \
 	done

 clean-libLTLIBRARIES:
@@ -417,9 +425,9 @@ clean-libLTLIBRARIES:
 	  rm -f "$${dir}/so_locations"; \
 	done
 libpng.la: $(libpng_la_OBJECTS) $(libpng_la_DEPENDENCIES) 
-	$(LINK)  $(libpng_la_LDFLAGS) $(libpng_la_OBJECTS) $(libpng_la_LIBADD) $(LIBS)
+	$(libpng_la_LINK)  $(libpng_la_OBJECTS) $(libpng_la_LIBADD) $(LIBS)
 libpng12.la: $(libpng12_la_OBJECTS) $(libpng12_la_DEPENDENCIES) 
-	$(LINK) -rpath $(libdir) $(libpng12_la_LDFLAGS) $(libpng12_la_OBJECTS) $(libpng12_la_LIBADD) $(LIBS)
+	$(libpng12_la_LINK) -rpath $(libdir) $(libpng12_la_OBJECTS) $(libpng12_la_LIBADD) $(LIBS)

 clean-checkPROGRAMS:
 	@list='$(check_PROGRAMS)'; for p in $$list; do \
@@ -429,10 +437,10 @@ clean-checkPROGRAMS:
 	done
 pngtest$(EXEEXT): $(pngtest_OBJECTS) $(pngtest_DEPENDENCIES) 
 	@rm -f pngtest$(EXEEXT)
-	$(LINK) $(pngtest_LDFLAGS) $(pngtest_OBJECTS) $(pngtest_LDADD) $(LIBS)
+	$(LINK) $(pngtest_OBJECTS) $(pngtest_LDADD) $(LIBS)
 install-binSCRIPTS: $(bin_SCRIPTS)
 	@$(NORMAL_INSTALL)
-	test -z "$(bindir)" || $(mkdir_p) "$(DESTDIR)$(bindir)"
+	test -z "$(bindir)" || $(MKDIR_P) "$(DESTDIR)$(bindir)"
 	@list='$(bin_SCRIPTS)'; for p in $$list; do \
 	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
 	  if test -f $$d$$p; then \
@@ -489,235 +497,235 @@ distclean-compile:
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/pngtest.Po@am__quote@

 .c.o:
-@am__fastdepCC_TRUE@	if $(COMPILE) -MT $@ -MD -MP -MF "$(DEPDIR)/$*.Tpo" -c -o $@ $<; \
-@am__fastdepCC_TRUE@	then mv -f "$(DEPDIR)/$*.Tpo" "$(DEPDIR)/$*.Po"; else rm -f "$(DEPDIR)/$*.Tpo"; exit 1; fi
+@am__fastdepCC_TRUE@	$(COMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ $<
+@am__fastdepCC_TRUE@	mv -f $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Po
@AMDEP_TRUE@@am__fastdepCC_FALSE@	source='$<' object='$@' libtool=no @AMDEPBACKSLASH@
@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
@am__fastdepCC_FALSE@	$(COMPILE) -c $<

 .c.obj:
-@am__fastdepCC_TRUE@	if $(COMPILE) -MT $@ -MD -MP -MF "$(DEPDIR)/$*.Tpo" -c -o $@ `$(CYGPATH_W) '$<'`; \
-@am__fastdepCC_TRUE@	then mv -f "$(DEPDIR)/$*.Tpo" "$(DEPDIR)/$*.Po"; else rm -f "$(DEPDIR)/$*.Tpo"; exit 1; fi
+@am__fastdepCC_TRUE@	$(COMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ `$(CYGPATH_W) '$<'`
+@am__fastdepCC_TRUE@	mv -f $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Po
@AMDEP_TRUE@@am__fastdepCC_FALSE@	source='$<' object='$@' libtool=no @AMDEPBACKSLASH@
@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
@am__fastdepCC_FALSE@	$(COMPILE) -c `$(CYGPATH_W) '$<'`

 .c.lo:
-@am__fastdepCC_TRUE@	if $(LTCOMPILE) -MT $@ -MD -MP -MF "$(DEPDIR)/$*.Tpo" -c -o $@ $<; \
-@am__fastdepCC_TRUE@	then mv -f "$(DEPDIR)/$*.Tpo" "$(DEPDIR)/$*.Plo"; else rm -f "$(DEPDIR)/$*.Tpo"; exit 1; fi
+@am__fastdepCC_TRUE@	$(LTCOMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ $<
+@am__fastdepCC_TRUE@	mv -f $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Plo
@AMDEP_TRUE@@am__fastdepCC_FALSE@	source='$<' object='$@' libtool=yes @AMDEPBACKSLASH@
@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
@am__fastdepCC_FALSE@	$(LTCOMPILE) -c -o $@ $<

 libpng_la-png.lo: png.c
-@am__fastdepCC_TRUE@	if $(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libpng_la-png.lo -MD -MP -MF "$(DEPDIR)/libpng_la-png.Tpo" -c -o libpng_la-png.lo `test -f 'png.c' || echo '$(srcdir)/'`png.c; \
-@am__fastdepCC_TRUE@	then mv -f "$(DEPDIR)/libpng_la-png.Tpo" "$(DEPDIR)/libpng_la-png.Plo"; else rm -f "$(DEPDIR)/libpng_la-png.Tpo"; exit 1; fi
+@am__fastdepCC_TRUE@	$(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libpng_la-png.lo -MD -MP -MF $(DEPDIR)/libpng_la-png.Tpo -c -o libpng_la-png.lo `test -f 'png.c' || echo '$(srcdir)/'`png.c
+@am__fastdepCC_TRUE@	mv -f $(DEPDIR)/libpng_la-png.Tpo $(DEPDIR)/libpng_la-png.Plo
@AMDEP_TRUE@@am__fastdepCC_FALSE@	source='png.c' object='libpng_la-png.lo' libtool=yes @AMDEPBACKSLASH@
@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
-@am__fastdepCC_FALSE@	$(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng_la-png.lo `test -f 'png.c' || echo '$(srcdir)/'`png.c
+@am__fastdepCC_FALSE@	$(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng_la-png.lo `test -f 'png.c' || echo '$(srcdir)/'`png.c

 libpng_la-pngset.lo: pngset.c
-@am__fastdepCC_TRUE@	if $(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libpng_la-pngset.lo -MD -MP -MF "$(DEPDIR)/libpng_la-pngset.Tpo" -c -o libpng_la-pngset.lo `test -f 'pngset.c' || echo '$(srcdir)/'`pngset.c; \
-@am__fastdepCC_TRUE@	then mv -f "$(DEPDIR)/libpng_la-pngset.Tpo" "$(DEPDIR)/libpng_la-pngset.Plo"; else rm -f "$(DEPDIR)/libpng_la-pngset.Tpo"; exit 1; fi
+@am__fastdepCC_TRUE@	$(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libpng_la-pngset.lo -MD -MP -MF $(DEPDIR)/libpng_la-pngset.Tpo -c -o libpng_la-pngset.lo `test -f 'pngset.c' || echo '$(srcdir)/'`pngset.c
+@am__fastdepCC_TRUE@	mv -f $(DEPDIR)/libpng_la-pngset.Tpo $(DEPDIR)/libpng_la-pngset.Plo
@AMDEP_TRUE@@am__fastdepCC_FALSE@	source='pngset.c' object='libpng_la-pngset.lo' libtool=yes @AMDEPBACKSLASH@
@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
-@am__fastdepCC_FALSE@	$(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng_la-pngset.lo `test -f 'pngset.c' || echo '$(srcdir)/'`pngset.c
+@am__fastdepCC_FALSE@	$(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng_la-pngset.lo `test -f 'pngset.c' || echo '$(srcdir)/'`pngset.c

 libpng_la-pngget.lo: pngget.c
-@am__fastdepCC_TRUE@	if $(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libpng_la-pngget.lo -MD -MP -MF "$(DEPDIR)/libpng_la-pngget.Tpo" -c -o libpng_la-pngget.lo `test -f 'pngget.c' || echo '$(srcdir)/'`pngget.c; \
-@am__fastdepCC_TRUE@	then mv -f "$(DEPDIR)/libpng_la-pngget.Tpo" "$(DEPDIR)/libpng_la-pngget.Plo"; else rm -f "$(DEPDIR)/libpng_la-pngget.Tpo"; exit 1; fi
+@am__fastdepCC_TRUE@	$(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libpng_la-pngget.lo -MD -MP -MF $(DEPDIR)/libpng_la-pngget.Tpo -c -o libpng_la-pngget.lo `test -f 'pngget.c' || echo '$(srcdir)/'`pngget.c
+@am__fastdepCC_TRUE@	mv -f $(DEPDIR)/libpng_la-pngget.Tpo $(DEPDIR)/libpng_la-pngget.Plo
@AMDEP_TRUE@@am__fastdepCC_FALSE@	source='pngget.c' object='libpng_la-pngget.lo' libtool=yes @AMDEPBACKSLASH@
@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
-@am__fastdepCC_FALSE@	$(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng_la-pngget.lo `test -f 'pngget.c' || echo '$(srcdir)/'`pngget.c
+@am__fastdepCC_FALSE@	$(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng_la-pngget.lo `test -f 'pngget.c' || echo '$(srcdir)/'`pngget.c

 libpng_la-pngrutil.lo: pngrutil.c
-@am__fastdepCC_TRUE@	if $(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libpng_la-pngrutil.lo -MD -MP -MF "$(DEPDIR)/libpng_la-pngrutil.Tpo" -c -o libpng_la-pngrutil.lo `test -f 'pngrutil.c' || echo '$(srcdir)/'`pngrutil.c; \
-@am__fastdepCC_TRUE@	then mv -f "$(DEPDIR)/libpng_la-pngrutil.Tpo" "$(DEPDIR)/libpng_la-pngrutil.Plo"; else rm -f "$(DEPDIR)/libpng_la-pngrutil.Tpo"; exit 1; fi
+@am__fastdepCC_TRUE@	$(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libpng_la-pngrutil.lo -MD -MP -MF $(DEPDIR)/libpng_la-pngrutil.Tpo -c -o libpng_la-pngrutil.lo `test -f 'pngrutil.c' || echo '$(srcdir)/'`pngrutil.c
+@am__fastdepCC_TRUE@	mv -f $(DEPDIR)/libpng_la-pngrutil.Tpo $(DEPDIR)/libpng_la-pngrutil.Plo
@AMDEP_TRUE@@am__fastdepCC_FALSE@	source='pngrutil.c' object='libpng_la-pngrutil.lo' libtool=yes @AMDEPBACKSLASH@
@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
-@am__fastdepCC_FALSE@	$(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng_la-pngrutil.lo `test -f 'pngrutil.c' || echo '$(srcdir)/'`pngrutil.c
+@am__fastdepCC_FALSE@	$(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng_la-pngrutil.lo `test -f 'pngrutil.c' || echo '$(srcdir)/'`pngrutil.c

 libpng_la-pngtrans.lo: pngtrans.c
-@am__fastdepCC_TRUE@	if $(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libpng_la-pngtrans.lo -MD -MP -MF "$(DEPDIR)/libpng_la-pngtrans.Tpo" -c -o libpng_la-pngtrans.lo `test -f 'pngtrans.c' || echo '$(srcdir)/'`pngtrans.c; \
-@am__fastdepCC_TRUE@	then mv -f "$(DEPDIR)/libpng_la-pngtrans.Tpo" "$(DEPDIR)/libpng_la-pngtrans.Plo"; else rm -f "$(DEPDIR)/libpng_la-pngtrans.Tpo"; exit 1; fi
+@am__fastdepCC_TRUE@	$(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libpng_la-pngtrans.lo -MD -MP -MF $(DEPDIR)/libpng_la-pngtrans.Tpo -c -o libpng_la-pngtrans.lo `test -f 'pngtrans.c' || echo '$(srcdir)/'`pngtrans.c
+@am__fastdepCC_TRUE@	mv -f $(DEPDIR)/libpng_la-pngtrans.Tpo $(DEPDIR)/libpng_la-pngtrans.Plo
@AMDEP_TRUE@@am__fastdepCC_FALSE@	source='pngtrans.c' object='libpng_la-pngtrans.lo' libtool=yes @AMDEPBACKSLASH@
@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
-@am__fastdepCC_FALSE@	$(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng_la-pngtrans.lo `test -f 'pngtrans.c' || echo '$(srcdir)/'`pngtrans.c
+@am__fastdepCC_FALSE@	$(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng_la-pngtrans.lo `test -f 'pngtrans.c' || echo '$(srcdir)/'`pngtrans.c

 libpng_la-pngwutil.lo: pngwutil.c
-@am__fastdepCC_TRUE@	if $(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libpng_la-pngwutil.lo -MD -MP -MF "$(DEPDIR)/libpng_la-pngwutil.Tpo" -c -o libpng_la-pngwutil.lo `test -f 'pngwutil.c' || echo '$(srcdir)/'`pngwutil.c; \
-@am__fastdepCC_TRUE@	then mv -f "$(DEPDIR)/libpng_la-pngwutil.Tpo" "$(DEPDIR)/libpng_la-pngwutil.Plo"; else rm -f "$(DEPDIR)/libpng_la-pngwutil.Tpo"; exit 1; fi
+@am__fastdepCC_TRUE@	$(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libpng_la-pngwutil.lo -MD -MP -MF $(DEPDIR)/libpng_la-pngwutil.Tpo -c -o libpng_la-pngwutil.lo `test -f 'pngwutil.c' || echo '$(srcdir)/'`pngwutil.c
+@am__fastdepCC_TRUE@	mv -f $(DEPDIR)/libpng_la-pngwutil.Tpo $(DEPDIR)/libpng_la-pngwutil.Plo
@AMDEP_TRUE@@am__fastdepCC_FALSE@	source='pngwutil.c' object='libpng_la-pngwutil.lo' libtool=yes @AMDEPBACKSLASH@
@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
-@am__fastdepCC_FALSE@	$(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng_la-pngwutil.lo `test -f 'pngwutil.c' || echo '$(srcdir)/'`pngwutil.c
+@am__fastdepCC_FALSE@	$(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng_la-pngwutil.lo `test -f 'pngwutil.c' || echo '$(srcdir)/'`pngwutil.c

 libpng_la-pngread.lo: pngread.c
-@am__fastdepCC_TRUE@	if $(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libpng_la-pngread.lo -MD -MP -MF "$(DEPDIR)/libpng_la-pngread.Tpo" -c -o libpng_la-pngread.lo `test -f 'pngread.c' || echo '$(srcdir)/'`pngread.c; \
-@am__fastdepCC_TRUE@	then mv -f "$(DEPDIR)/libpng_la-pngread.Tpo" "$(DEPDIR)/libpng_la-pngread.Plo"; else rm -f "$(DEPDIR)/libpng_la-pngread.Tpo"; exit 1; fi
+@am__fastdepCC_TRUE@	$(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libpng_la-pngread.lo -MD -MP -MF $(DEPDIR)/libpng_la-pngread.Tpo -c -o libpng_la-pngread.lo `test -f 'pngread.c' || echo '$(srcdir)/'`pngread.c
+@am__fastdepCC_TRUE@	mv -f $(DEPDIR)/libpng_la-pngread.Tpo $(DEPDIR)/libpng_la-pngread.Plo
@AMDEP_TRUE@@am__fastdepCC_FALSE@	source='pngread.c' object='libpng_la-pngread.lo' libtool=yes @AMDEPBACKSLASH@
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@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
-@am__fastdepCC_FALSE@	$(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng12_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng12_la-pngmem.lo `test -f 'pngmem.c' || echo '$(srcdir)/'`pngmem.c
+@am__fastdepCC_FALSE@	$(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng12_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng12_la-pngmem.lo `test -f 'pngmem.c' || echo '$(srcdir)/'`pngmem.c

 libpng12_la-pngerror.lo: pngerror.c
-@am__fastdepCC_TRUE@	if $(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng12_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libpng12_la-pngerror.lo -MD -MP -MF "$(DEPDIR)/libpng12_la-pngerror.Tpo" -c -o libpng12_la-pngerror.lo `test -f 'pngerror.c' || echo '$(srcdir)/'`pngerror.c; \
-@am__fastdepCC_TRUE@	then mv -f "$(DEPDIR)/libpng12_la-pngerror.Tpo" "$(DEPDIR)/libpng12_la-pngerror.Plo"; else rm -f "$(DEPDIR)/libpng12_la-pngerror.Tpo"; exit 1; fi
+@am__fastdepCC_TRUE@	$(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng12_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libpng12_la-pngerror.lo -MD -MP -MF $(DEPDIR)/libpng12_la-pngerror.Tpo -c -o libpng12_la-pngerror.lo `test -f 'pngerror.c' || echo '$(srcdir)/'`pngerror.c
+@am__fastdepCC_TRUE@	mv -f $(DEPDIR)/libpng12_la-pngerror.Tpo $(DEPDIR)/libpng12_la-pngerror.Plo
@AMDEP_TRUE@@am__fastdepCC_FALSE@	source='pngerror.c' object='libpng12_la-pngerror.lo' libtool=yes @AMDEPBACKSLASH@
@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
-@am__fastdepCC_FALSE@	$(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng12_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng12_la-pngerror.lo `test -f 'pngerror.c' || echo '$(srcdir)/'`pngerror.c
+@am__fastdepCC_FALSE@	$(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng12_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng12_la-pngerror.lo `test -f 'pngerror.c' || echo '$(srcdir)/'`pngerror.c

 libpng12_la-pngpread.lo: pngpread.c
-@am__fastdepCC_TRUE@	if $(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng12_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libpng12_la-pngpread.lo -MD -MP -MF "$(DEPDIR)/libpng12_la-pngpread.Tpo" -c -o libpng12_la-pngpread.lo `test -f 'pngpread.c' || echo '$(srcdir)/'`pngpread.c; \
-@am__fastdepCC_TRUE@	then mv -f "$(DEPDIR)/libpng12_la-pngpread.Tpo" "$(DEPDIR)/libpng12_la-pngpread.Plo"; else rm -f "$(DEPDIR)/libpng12_la-pngpread.Tpo"; exit 1; fi
+@am__fastdepCC_TRUE@	$(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng12_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libpng12_la-pngpread.lo -MD -MP -MF $(DEPDIR)/libpng12_la-pngpread.Tpo -c -o libpng12_la-pngpread.lo `test -f 'pngpread.c' || echo '$(srcdir)/'`pngpread.c
+@am__fastdepCC_TRUE@	mv -f $(DEPDIR)/libpng12_la-pngpread.Tpo $(DEPDIR)/libpng12_la-pngpread.Plo
@AMDEP_TRUE@@am__fastdepCC_FALSE@	source='pngpread.c' object='libpng12_la-pngpread.lo' libtool=yes @AMDEPBACKSLASH@
@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
-@am__fastdepCC_FALSE@	$(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng12_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng12_la-pngpread.lo `test -f 'pngpread.c' || echo '$(srcdir)/'`pngpread.c
+@am__fastdepCC_FALSE@	$(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng12_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng12_la-pngpread.lo `test -f 'pngpread.c' || echo '$(srcdir)/'`pngpread.c

 mostlyclean-libtool:
 	-rm -f *.lo
@@ -727,10 +735,9 @@ clean-libtool:

 distclean-libtool:
 	-rm -f libtool
-uninstall-info-am:
 install-man3: $(man3_MANS) $(man_MANS)
 	@$(NORMAL_INSTALL)
-	test -z "$(man3dir)" || $(mkdir_p) "$(DESTDIR)$(man3dir)"
+	test -z "$(man3dir)" || $(MKDIR_P) "$(DESTDIR)$(man3dir)"
 	@list='$(man3_MANS) $(dist_man3_MANS) $(nodist_man3_MANS)'; \
 	l2='$(man_MANS) $(dist_man_MANS) $(nodist_man_MANS)'; \
 	for i in $$l2; do \
@@ -775,7 +782,7 @@ uninstall-man3:
 	done
 install-man5: $(man5_MANS) $(man_MANS)
 	@$(NORMAL_INSTALL)
-	test -z "$(man5dir)" || $(mkdir_p) "$(DESTDIR)$(man5dir)"
+	test -z "$(man5dir)" || $(MKDIR_P) "$(DESTDIR)$(man5dir)"
 	@list='$(man5_MANS) $(dist_man5_MANS) $(nodist_man5_MANS)'; \
 	l2='$(man_MANS) $(dist_man_MANS) $(nodist_man_MANS)'; \
 	for i in $$l2; do \
@@ -820,7 +827,7 @@ uninstall-man5:
 	done
 install-pkgconfigDATA: $(pkgconfig_DATA)
 	@$(NORMAL_INSTALL)
-	test -z "$(pkgconfigdir)" || $(mkdir_p) "$(DESTDIR)$(pkgconfigdir)"
+	test -z "$(pkgconfigdir)" || $(MKDIR_P) "$(DESTDIR)$(pkgconfigdir)"
 	@list='$(pkgconfig_DATA)'; for p in $$list; do \
 	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
 	  f=$(am__strip_dir) \
@@ -837,7 +844,7 @@ uninstall-pkgconfigDATA:
 	done
 install-pkgincludeHEADERS: $(pkginclude_HEADERS)
 	@$(NORMAL_INSTALL)
-	test -z "$(pkgincludedir)" || $(mkdir_p) "$(DESTDIR)$(pkgincludedir)"
+	test -z "$(pkgincludedir)" || $(MKDIR_P) "$(DESTDIR)$(pkgincludedir)"
 	@list='$(pkginclude_HEADERS)'; for p in $$list; do \
 	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
 	  f=$(am__strip_dir) \
@@ -858,8 +865,8 @@ ID: $(HEADERS) $(SOURCES) $(LISP) $(TAGS_FILES)
 	unique=`for i in $$list; do \
 	    if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
 	  done | \
-	  $(AWK) '    { files[$$0] = 1; } \
-	       END { for (i in files) print i; }'`; \
+	  $(AWK) '{ files[$$0] = 1; nonemtpy = 1; } \
+	      END { if (nonempty) { for (i in files) print i; }; }'`; \
 	mkid -fID $$unique
 tags: TAGS

@@ -871,8 +878,8 @@ TAGS:  $(HEADERS) $(SOURCES) config.h.in $(TAGS_DEPENDENCIES) \
 	unique=`for i in $$list; do \
 	    if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
 	  done | \
-	  $(AWK) '    { files[$$0] = 1; } \
-	       END { for (i in files) print i; }'`; \
+	  $(AWK) '{ files[$$0] = 1; nonempty = 1; } \
+	      END { if (nonempty) { for (i in files) print i; }; }'`; \
 	if test -z "$(ETAGS_ARGS)$$tags$$unique"; then :; else \
 	  test -n "$$unique" || unique=$$empty_fix; \
 	  $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
@@ -882,13 +889,12 @@ ctags: CTAGS
 CTAGS:  $(HEADERS) $(SOURCES) config.h.in $(TAGS_DEPENDENCIES) \
 		$(TAGS_FILES) $(LISP)
 	tags=; \
-	here=`pwd`; \
 	list='$(SOURCES) $(HEADERS) config.h.in $(LISP) $(TAGS_FILES)'; \
 	unique=`for i in $$list; do \
 	    if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
 	  done | \
-	  $(AWK) '    { files[$$0] = 1; } \
-	       END { for (i in files) print i; }'`; \
+	  $(AWK) '{ files[$$0] = 1; nonempty = 1; } \
+	      END { if (nonempty) { for (i in files) print i; }; }'`; \
 	test -z "$(CTAGS_ARGS)$$tags$$unique" \
 	  || $(CTAGS) $(CTAGSFLAGS) $(AM_CTAGSFLAGS) $(CTAGS_ARGS) \
 	     $$tags $$unique
@@ -902,9 +908,9 @@ distclean-tags:
 	-rm -f TAGS ID GTAGS GRTAGS GSYMS GPATH tags

 check-TESTS: $(TESTS)
-	@failed=0; all=0; xfail=0; xpass=0; skip=0; \
+	@failed=0; all=0; xfail=0; xpass=0; skip=0; ws='[	 ]'; \
 	srcdir=$(srcdir); export srcdir; \
-	list='$(TESTS)'; \
+	list=' $(TESTS) '; \
 	if test -n "$$list"; then \
 	  for tst in $$list; do \
 	    if test -f ./$$tst; then dir=./; \
@@ -913,7 +919,7 @@ check-TESTS: $(TESTS)
 	    if $(TESTS_ENVIRONMENT) $${dir}$$tst; then \
 	      all=`expr $$all + 1`; \
 	      case " $(XFAIL_TESTS) " in \
-	      *" $$tst "*) \
+	      *$$ws$$tst$$ws*) \
 		xpass=`expr $$xpass + 1`; \
 		failed=`expr $$failed + 1`; \
 		echo "XPASS: $$tst"; \
@@ -925,7 +931,7 @@ check-TESTS: $(TESTS)
 	    elif test $$? -ne 77; then \
 	      all=`expr $$all + 1`; \
 	      case " $(XFAIL_TESTS) " in \
-	      *" $$tst "*) \
+	      *$$ws$$tst$$ws*) \
 		xfail=`expr $$xfail + 1`; \
 		echo "XFAIL: $$tst"; \
 	      ;; \
@@ -976,24 +982,22 @@ check-TESTS: $(TESTS)

 distdir: $(DISTFILES)
 	$(am__remove_distdir)
-	mkdir $(distdir)
-	$(mkdir_p) $(distdir)/${srcdir}/contrib/gregbook $(distdir)/${srcdir}/contrib/pngminus $(distdir)/${srcdir}/contrib/pngsuite $(distdir)/${srcdir}/contrib/visupng $(distdir)/${srcdir}/projects $(distdir)/${srcdir}/projects/beos $(distdir)/${srcdir}/projects/cbuilder5 $(distdir)/${srcdir}/projects/visualc6 $(distdir)/${srcdir}/projects/visualc71 $(distdir)/${srcdir}/scripts $(distdir)/scripts
-	@srcdirstrip=`echo "$(srcdir)" | sed 's|.|.|g'`; \
-	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's|.|.|g'`; \
-	list='$(DISTFILES)'; for file in $$list; do \
-	  case $$file in \
-	    $(srcdir)/*) file=`echo "$$file" | sed "s|^$$srcdirstrip/||"`;; \
-	    $(top_srcdir)/*) file=`echo "$$file" | sed "s|^$$topsrcdirstrip/|$(top_builddir)/|"`;; \
-	  esac; \
+	test -d $(distdir) || mkdir $(distdir)
+	@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	list='$(DISTFILES)'; \
+	  dist_files=`for file in $$list; do echo $$file; done | \
+	  sed -e "s|^$$srcdirstrip/||;t" \
+	      -e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
+	case $$dist_files in \
+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
+			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+			   sort -u` ;; \
+	esac; \
+	for file in $$dist_files; do \
 	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
-	  dir=`echo "$$file" | sed -e 's,/[^/]*$$,,'`; \
-	  if test "$$dir" != "$$file" && test "$$dir" != "."; then \
-	    dir="/$$dir"; \
-	    $(mkdir_p) "$(distdir)$$dir"; \
-	  else \
-	    dir=''; \
-	  fi; \
 	  if test -d $$d/$$file; then \
+	    dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
 	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
 	      cp -pR $(srcdir)/$$file $(distdir)$$dir || exit 1; \
 	    fi; \
@@ -1007,7 +1011,7 @@ distdir: $(DISTFILES)
 	-find $(distdir) -type d ! -perm -777 -exec chmod a+rwx {} \; -o \
 	  ! -type d ! -perm -444 -links 1 -exec chmod a+r {} \; -o \
 	  ! -type d ! -perm -400 -exec chmod a+r {} \; -o \
-	  ! -type d ! -perm -444 -exec $(SHELL) $(install_sh) -c -m a+r {} {} \; \
+	  ! -type d ! -perm -444 -exec $(install_sh) -c -m a+r {} {} \; \
 	|| chmod -R a+r $(distdir)
 dist-gzip: distdir
 	tardir=$(distdir) && $(am__tar) | GZIP=$(GZIP_ENV) gzip -c >$(distdir).tar.gz
@@ -1017,6 +1021,10 @@ dist-bzip2: distdir
 	tardir=$(distdir) && $(am__tar) | bzip2 -9 -c >$(distdir).tar.bz2
 	$(am__remove_distdir)

+dist-lzma: distdir
+	tardir=$(distdir) && $(am__tar) | lzma -9 -c >$(distdir).tar.lzma
+	$(am__remove_distdir)
+
 dist-tarZ: distdir
 	tardir=$(distdir) && $(am__tar) | compress -c >$(distdir).tar.Z
 	$(am__remove_distdir)
@@ -1043,6 +1051,8 @@ distcheck: dist
 	  GZIP=$(GZIP_ENV) gunzip -c $(distdir).tar.gz | $(am__untar) ;;\
 	*.tar.bz2*) \
 	  bunzip2 -c $(distdir).tar.bz2 | $(am__untar) ;;\
+	*.tar.lzma*) \
+	  unlzma -c $(distdir).tar.lzma | $(am__untar) ;;\
 	*.tar.Z*) \
 	  uncompress -c $(distdir).tar.Z | $(am__untar) ;;\
 	*.shar.gz*) \
@@ -1082,7 +1092,7 @@ distcheck: dist
 	$(am__remove_distdir)
 	@(echo "$(distdir) archives ready for distribution: "; \
 	  list='$(DIST_ARCHIVES)'; for i in $$list; do echo $$i; done) | \
-	  sed -e '1{h;s/./=/g;p;x;}' -e '$${p;x;}'
+	  sed -e 1h -e 1s/./=/g -e 1p -e 1x -e '$$p' -e '$$x'
 distuninstallcheck:
 	@cd $(distuninstallcheck_dir) \
 	&& test `$(distuninstallcheck_listfiles) | wc -l` -le 1 \
@@ -1109,7 +1119,7 @@ all-am: Makefile $(LTLIBRARIES) $(SCRIPTS) $(MANS) $(DATA) $(HEADERS) \
 		config.h
 installdirs:
 	for dir in "$(DESTDIR)$(libdir)" "$(DESTDIR)$(bindir)" "$(DESTDIR)$(man3dir)" "$(DESTDIR)$(man5dir)" "$(DESTDIR)$(pkgconfigdir)" "$(DESTDIR)$(pkgincludedir)"; do \
-	  test -z "$$dir" || $(mkdir_p) "$$dir"; \
+	  test -z "$$dir" || $(MKDIR_P) "$$dir"; \
 	done
 install: install-am
 install-exec: install-exec-am
@@ -1136,6 +1146,7 @@ distclean-generic:
 maintainer-clean-generic:
 	@echo "This command is intended for maintainers to use"
 	@echo "it deletes files that may require special tools to rebuild."
+	-test -z "$(MAINTAINERCLEANFILES)" || rm -f $(MAINTAINERCLEANFILES)
 clean: clean-am

 clean-am: clean-checkPROGRAMS clean-generic clean-libLTLIBRARIES \
@@ -1163,14 +1174,22 @@ install-data-am: install-man install-pkgconfigDATA \
 	@$(NORMAL_INSTALL)
 	$(MAKE) $(AM_MAKEFLAGS) install-data-hook

+install-dvi: install-dvi-am
+
 install-exec-am: install-binSCRIPTS install-libLTLIBRARIES
 	@$(NORMAL_INSTALL)
 	$(MAKE) $(AM_MAKEFLAGS) install-exec-hook

+install-html: install-html-am
+
 install-info: install-info-am

 install-man: install-man3 install-man5

+install-pdf: install-pdf-am
+
+install-ps: install-ps-am
+
 installcheck-am:

 maintainer-clean: maintainer-clean-am
@@ -1193,31 +1212,36 @@ ps: ps-am

 ps-am:

-uninstall-am: uninstall-binSCRIPTS uninstall-info-am \
-	uninstall-libLTLIBRARIES uninstall-man uninstall-pkgconfigDATA \
+uninstall-am: uninstall-binSCRIPTS uninstall-libLTLIBRARIES \
+	uninstall-man uninstall-pkgconfigDATA \
 	uninstall-pkgincludeHEADERS
 	@$(NORMAL_INSTALL)
 	$(MAKE) $(AM_MAKEFLAGS) uninstall-hook

 uninstall-man: uninstall-man3 uninstall-man5

+.MAKE: install-am install-data-am install-exec-am install-strip \
+	uninstall-am
+
 .PHONY: CTAGS GTAGS all all-am am--refresh check check-TESTS check-am \
 	clean clean-checkPROGRAMS clean-generic clean-libLTLIBRARIES \
 	clean-libtool ctags dist dist-all dist-bzip2 dist-gzip \
-	dist-shar dist-tarZ dist-zip distcheck distclean \
+	dist-lzma dist-shar dist-tarZ dist-zip distcheck distclean \
 	distclean-compile distclean-generic distclean-hdr \
 	distclean-libtool distclean-tags distcleancheck distdir \
 	distuninstallcheck dvi dvi-am html html-am info info-am \
 	install install-am install-binSCRIPTS install-data \
-	install-data-am install-data-hook install-exec install-exec-am \
-	install-exec-hook install-info install-info-am \
+	install-data-am install-data-hook install-dvi install-dvi-am \
+	install-exec install-exec-am install-exec-hook install-html \
+	install-html-am install-info install-info-am \
 	install-libLTLIBRARIES install-man install-man3 install-man5 \
-	install-pkgconfigDATA install-pkgincludeHEADERS install-strip \
-	installcheck installcheck-am installdirs maintainer-clean \
-	maintainer-clean-generic mostlyclean mostlyclean-compile \
-	mostlyclean-generic mostlyclean-libtool pdf pdf-am ps ps-am \
-	tags uninstall uninstall-am uninstall-binSCRIPTS \
-	uninstall-hook uninstall-info-am uninstall-libLTLIBRARIES \
+	install-pdf install-pdf-am install-pkgconfigDATA \
+	install-pkgincludeHEADERS install-ps install-ps-am \
+	install-strip installcheck installcheck-am installdirs \
+	maintainer-clean maintainer-clean-generic mostlyclean \
+	mostlyclean-compile mostlyclean-generic mostlyclean-libtool \
+	pdf pdf-am ps ps-am tags uninstall uninstall-am \
+	uninstall-binSCRIPTS uninstall-hook uninstall-libLTLIBRARIES \
 	uninstall-man uninstall-man3 uninstall-man5 \
 	uninstall-pkgconfigDATA uninstall-pkgincludeHEADERS

--- a/29
+++ b/29
@@ -1,11 +1,12 @@
-README for libpng version 1.2.25beta03 - January 22, 2008 (shared library 12.0)
+README for libpng version 1.2.27rc01 - April 23, 2008 (shared library 12.0)
 See the note about version numbers near the top of png.h

 See INSTALL for instructions on how to install libpng.

-Libpng comes in several distribution formats.  Get libpng-*.tar.gz
-or libpng-*.tar.bz2 if you want UNIX-style line endings in the text
-files, or lpng*.zip if you want DOS-style line endings.
+Libpng comes in several distribution formats.  Get libpng-*.tar.gz,
+libpng-*.tar.lzma, or libpng-*.tar.bz2 if you want UNIX-style line
+endings in the text files, or lpng*.7z or lpng*.zip if you want DOS-style
+line endings.

 Version 0.89 was the first official release of libpng.  Don't let the
 fact that it's the first release fool you.  The libpng library has been in
@@ -77,12 +78,12 @@ compression library that is useful for more things than just PNG files.
 You can use zlib as a drop-in replacement for fread() and fwrite() if
 you are so inclined.

-zlib should be available at the same place that libpng is, or at.
-ftp://ftp.info-zip.org/pub/infozip/zlib
+zlib should be available at the same place that libpng is, or at
+ftp://ftp.simplesystems.org/pub/png/src/

 You may also want a copy of the PNG specification.  It is available
 as an RFC, a W3C Recommendation, and an ISO/IEC Standard.  You can find
-these at http://www.libpng.org/pub/png/documents/
+these at http://www.libpng.org/pub/png/pngdocs.html

 This code is currently being archived at libpng.sf.net in the
 [DOWNLOAD] area, and on CompuServe, Lib 20 (PNG SUPPORT)
@@ -190,11 +191,11 @@ Files in this distribution:
       descrip.mms      =>  VMS makefile for MMS or MMK
       makefile.std     =>  Generic UNIX makefile (cc, creates static libpng.a)
       makefile.elf     =>  Linux/ELF makefile symbol versioning,
-                            gcc, creates libpng12.so.0.1.2.25beta03)
+                            gcc, creates libpng12.so.0.1.2.27rc01)
       makefile.linux   =>  Linux/ELF makefile
-                            (gcc, creates libpng12.so.0.1.2.25beta03)
+                            (gcc, creates libpng12.so.0.1.2.27rc01)
       makefile.gcmmx   =>  Linux/ELF makefile
-                            (gcc, creates libpng12.so.0.1.2.25beta03,
+                            (gcc, creates libpng12.so.0.1.2.27rc01,
                            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
@@ -216,12 +217,12 @@ Files in this distribution:
       makefile.openbsd =>  OpenBSD makefile
       makefile.sgi     =>  Silicon Graphics IRIX (cc, creates static lib)
       makefile.sggcc   =>  Silicon Graphics
-                            (gcc, creates libpng12.so.0.1.2.25beta03)
+                            (gcc, creates libpng12.so.0.1.2.27rc01)
       makefile.sunos   =>  Sun makefile
       makefile.solaris =>  Solaris 2.X makefile
-                            (gcc, creates libpng12.so.0.1.2.25beta03)
+                            (gcc, creates libpng12.so.0.1.2.27rc01)
       makefile.so9     =>  Solaris 9 makefile
-                            (gcc, creates libpng12.so.0.1.2.25beta03)
+                            (gcc, creates libpng12.so.0.1.2.27rc01)
       makefile.32sunu  =>  Sun Ultra 32-bit makefile
       makefile.64sunu  =>  Sun Ultra 64-bit makefile
       makefile.sco     =>  For SCO OSr5  ELF and Unixware 7 with Native cc
@@ -256,7 +257,7 @@ Good luck, and happy coding.

 -Andreas Eric Dilger (former maintainer, 1996-1997)
 Internet: adilger at enel.ucalgary.ca
- Web: http://www-mddsp.enel.ucalgary.ca/People/adilger/
+ Web: http://members.shaw.ca/adilger/

 -Guy Eric Schalnat (original author and former maintainer, 1995-1996)
 (formerly of Group 42, Inc)
--- a/4
+++ b/4
@@ -1,13 +1,13 @@
   Y2K compliance in libpng:
   =========================

-      January 22, 2008
+      April 23, 2008

      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 1.2.25beta03 are Y2K compliant.  It is my belief that earlier
+      upward through 1.2.27rc01 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
--- a/aclocal.m4
+++ b/aclocal.m4
--- a/19002
+++ b/19002
--- a/configure.ac
+++ b/configure.ac
@@ -18,15 +18,15 @@ AC_PREREQ(2.59)

 dnl Version number stuff here:

-AC_INIT([libpng], [1.2.25beta03], [png-mng-implement@lists.sourceforge.net])
+AC_INIT([libpng], [1.2.27rc01], [png-mng-implement@lists.sourceforge.net])
 AM_INIT_AUTOMAKE
 dnl stop configure from automagically running automake
 AM_MAINTAINER_MODE

-PNGLIB_VERSION=1.2.25beta03
+PNGLIB_VERSION=1.2.27rc01
 PNGLIB_MAJOR=1
 PNGLIB_MINOR=2
-PNGLIB_RELEASE=25
+PNGLIB_RELEASE=27

 dnl End of version number stuff

@@ -38,6 +38,7 @@ AC_PROG_CC
 AC_PROG_LD
 AC_PROG_CPP
 AC_CHECK_TOOL(SED, sed, :)
+AC_LIBTOOL_WIN32_DLL
 AC_PROG_INSTALL
 AC_PROG_LN_S
 AC_PROG_MAKE_SET
--- a/contrib/gregbook/LICENSE
+++ b/contrib/gregbook/LICENSE
@@ -1,6 +1,6 @@
  ---------------------------------------------------------------------------

-      Copyright (c) 1998-2007 Greg Roelofs.  All rights reserved.
+      Copyright (c) 1998-2008 Greg Roelofs.  All rights reserved.

      This software is provided "as is," without warranty of any kind,
      express or implied.  In no event shall the author or contributors
--- a/contrib/gregbook/README
+++ b/contrib/gregbook/README
@@ -56,7 +56,7 @@ mation and links to the latest version of the source code, and Chapters

 Greg Roelofs
 http://pobox.com/~newt/greg_contact.html
-2 June 2007
+16 March 2008


 BUILD INSTRUCTIONS
--- a/contrib/gregbook/readpng2.h
+++ b/contrib/gregbook/readpng2.h
@@ -4,7 +4,7 @@

  ---------------------------------------------------------------------------

-      Copyright (c) 1998-2007 Greg Roelofs.  All rights reserved.
+      Copyright (c) 1998-2008 Greg Roelofs.  All rights reserved.

      This software is provided "as is," without warranty of any kind,
      express or implied.  In no event shall the author or contributors
@@ -69,6 +69,12 @@
 #  define Trace(x)  ;
 #endif

+enum rpng2_states {
+    kPreInit = 0,
+    kWindowInit,
+    kDone
+};
+
 typedef unsigned char   uch;
 typedef unsigned short  ush;
 typedef unsigned long   ulg;
@@ -95,7 +101,7 @@ typedef struct _mainprog_info {
    int nommxcombine;
    int nommxinterlace;
 #endif
-    int done;
+    int state;
    uch bg_red;
    uch bg_green;
    uch bg_blue;
--- a/contrib/gregbook/rpng-win.c
+++ b/contrib/gregbook/rpng-win.c
@@ -23,10 +23,11 @@
              command-line parsing bug
    - 1.10:  enabled "message window"/console (thanks to David Geldreich)
    - 2.00:  dual-licensed (added GNU GPL)
+    - 2.01:  fixed improper display of usage screen on PNG error(s)

  ---------------------------------------------------------------------------

-      Copyright (c) 1998-2007 Greg Roelofs.  All rights reserved.
+      Copyright (c) 1998-2008 Greg Roelofs.  All rights reserved.

      This software is provided "as is," without warranty of any kind,
      express or implied.  In no event shall the author or contributors
@@ -77,7 +78,7 @@

 #define PROGNAME  "rpng-win"
 #define LONGNAME  "Simple PNG Viewer for Windows"
-#define VERSION   "2.00 of 2 June 2007"
+#define VERSION   "2.01 of 16 March 2008"

 #include <stdio.h>
 #include <stdlib.h>
@@ -271,40 +272,11 @@ int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrevInst, PSTR cmd, int showmode)
        }
    }

-    if (!filename) {
+    if (!filename)
        ++error;
-    } else if (!(infile = fopen(filename, "rb"))) {
-        fprintf(stderr, PROGNAME ":  can't open PNG file [%s]\n", filename);
-        ++error;
-    } else {
-        if ((rc = readpng_init(infile, &image_width, &image_height)) != 0) {
-            switch (rc) {
-                case 1:
-                    fprintf(stderr, PROGNAME
-                      ":  [%s] is not a PNG file: incorrect signature\n",
-                      filename);
-                    break;
-                case 2:
-                    fprintf(stderr, PROGNAME
-                      ":  [%s] has bad IHDR (libpng longjmp)\n",
-                      filename);
-                    break;
-                case 4:
-                    fprintf(stderr, PROGNAME ":  insufficient memory\n");
-                    break;
-                default:
-                    fprintf(stderr, PROGNAME
-                      ":  unknown readpng_init() error\n");
-                    break;
-            }
-            ++error;
-        }
-        if (error)
-            fclose(infile);
-    }


-    /* usage screen */
+    /* print usage screen if any errors up to this point */

    if (error) {
        int ch;
@@ -327,6 +299,47 @@ int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrevInst, PSTR cmd, int showmode)
            ch = _getch();
        while (ch != 'q' && ch != 'Q' && ch != 0x1B);
        exit(1);
+    }
+
+
+    if (!(infile = fopen(filename, "rb"))) {
+        fprintf(stderr, PROGNAME ":  can't open PNG file [%s]\n", filename);
+        ++error;
+    } else {
+        if ((rc = readpng_init(infile, &image_width, &image_height)) != 0) {
+            switch (rc) {
+                case 1:
+                    fprintf(stderr, PROGNAME
+                      ":  [%s] is not a PNG file: incorrect signature\n",
+                      filename);
+                    break;
+                case 2:
+                    fprintf(stderr, PROGNAME
+                      ":  [%s] has bad IHDR (libpng longjmp)\n", filename);
+                    break;
+                case 4:
+                    fprintf(stderr, PROGNAME ":  insufficient memory\n");
+                    break;
+                default:
+                    fprintf(stderr, PROGNAME
+                      ":  unknown readpng_init() error\n");
+                    break;
+            }
+            ++error;
+        }
+        if (error)
+            fclose(infile);
+    }
+
+
+    if (error) {
+        int ch;
+
+        fprintf(stderr, PROGNAME ":  aborting.\n");
+        do
+            ch = _getch();
+        while (ch != 'q' && ch != 'Q' && ch != 0x1B);
+        exit(2);
    } else {
        fprintf(stderr, "\n%s %s:  %s\n", PROGNAME, VERSION, appname);
        fprintf(stderr,
--- a/contrib/gregbook/rpng-x.c
+++ b/contrib/gregbook/rpng-x.c
@@ -25,10 +25,11 @@
    - 1.13:  fixed XFreeGC() crash bug (thanks to Patrick Welche)
    - 1.14:  added support for X resources (thanks to Gerhard Niklasch)
    - 2.00:  dual-licensed (added GNU GPL)
+    - 2.01:  fixed improper display of usage screen on PNG error(s)

  ---------------------------------------------------------------------------

-      Copyright (c) 1998-2007 Greg Roelofs.  All rights reserved.
+      Copyright (c) 1998-2008 Greg Roelofs.  All rights reserved.

      This software is provided "as is," without warranty of any kind,
      express or implied.  In no event shall the author or contributors
@@ -79,7 +80,7 @@

 #define PROGNAME  "rpng-x"
 #define LONGNAME  "Simple PNG Viewer for X"
-#define VERSION   "2.00 of 2 June 2007"
+#define VERSION   "2.01 of 16 March 2008"
 #define RESNAME   "rpng"	/* our X resource application name */
 #define RESCLASS  "Rpng"	/* our X resource class name */

@@ -265,9 +266,33 @@ int main(int argc, char **argv)
        }
    }

-    if (!filename) {
+    if (!filename)
        ++error;
-    } else if (!(infile = fopen(filename, "rb"))) {
+
+
+    /* print usage screen if any errors up to this point */
+
+    if (error) {
+        fprintf(stderr, "\n%s %s:  %s\n", PROGNAME, VERSION, appname);
+        readpng_version_info();
+        fprintf(stderr, "\n"
+          "Usage:  %s [-display xdpy] [-gamma exp] [-bgcolor bg] file.png\n"
+          "    xdpy\tname of the target X display (e.g., ``hostname:0'')\n"
+          "    exp \ttransfer-function exponent (``gamma'') of the display\n"
+          "\t\t  system in floating-point format (e.g., ``%.1f''); equal\n"
+          "\t\t  to the product of the lookup-table exponent (varies)\n"
+          "\t\t  and the CRT exponent (usually 2.2); must be positive\n"
+          "    bg  \tdesired background color in 7-character hex RGB format\n"
+          "\t\t  (e.g., ``#ff7700'' for orange:  same as HTML colors);\n"
+          "\t\t  used with transparent images\n"
+          "\nPress Q, Esc or mouse button 1 (within image window, after image\n"
+          "is displayed) to quit.\n"
+          "\n", PROGNAME, default_display_exponent);
+        exit(1);
+    }
+
+
+    if (!(infile = fopen(filename, "rb"))) {
        fprintf(stderr, PROGNAME ":  can't open PNG file [%s]\n", filename);
        ++error;
    } else {
@@ -280,8 +305,7 @@ int main(int argc, char **argv)
                    break;
                case 2:
                    fprintf(stderr, PROGNAME
-                      ":  [%s] has bad IHDR (libpng longjmp)\n",
-                      filename);
+                      ":  [%s] has bad IHDR (libpng longjmp)\n", filename);
                    break;
                case 4:
                    fprintf(stderr, PROGNAME ":  insufficient memory\n");
@@ -306,25 +330,9 @@ int main(int argc, char **argv)
    }


-    /* usage screen */
-
    if (error) {
-        fprintf(stderr, "\n%s %s:  %s\n", PROGNAME, VERSION, appname);
-        readpng_version_info();
-        fprintf(stderr, "\n"
-          "Usage:  %s [-display xdpy] [-gamma exp] [-bgcolor bg] file.png\n"
-          "    xdpy\tname of the target X display (e.g., ``hostname:0'')\n"
-          "    exp \ttransfer-function exponent (``gamma'') of the display\n"
-          "\t\t  system in floating-point format (e.g., ``%.1f''); equal\n"
-          "\t\t  to the product of the lookup-table exponent (varies)\n"
-          "\t\t  and the CRT exponent (usually 2.2); must be positive\n"
-          "    bg  \tdesired background color in 7-character hex RGB format\n"
-          "\t\t  (e.g., ``#ff7700'' for orange:  same as HTML colors);\n"
-          "\t\t  used with transparent images\n"
-          "\nPress Q, Esc or mouse button 1 (within image window, after image\n"
-          "is displayed) to quit.\n"
-          "\n", PROGNAME, default_display_exponent);
-        exit(1);
+        fprintf(stderr, PROGNAME ":  aborting.\n");
+        exit(2);
    }


--- a/contrib/gregbook/rpng2-win.c
+++ b/contrib/gregbook/rpng2-win.c
@@ -10,7 +10,7 @@
   tweaking (or maybe not).  Thanks to Adam Costello and Pieter S. van der
   Meulen for the "diamond" and "radial waves" patterns, respectively.

-   to do:
+   to do (someday, maybe):
    - handle quoted command-line args (especially filenames with spaces)
    - finish resizable checkerboard-gradient (sizes 4-128?)
    - use %.1023s to simplify truncation of title-bar string?
@@ -29,10 +29,13 @@
    - 1.21:  made minor tweak to usage screen to fit within 25-line console
    - 1.22:  added AMD64/EM64T support (__x86_64__)
    - 2.00:  dual-licensed (added GNU GPL)
+    - 2.01:  fixed 64-bit typo in readpng2.c
+    - 2.02:  fixed improper display of usage screen on PNG error(s); fixed
+              unexpected-EOF and file-read-error cases

  ---------------------------------------------------------------------------

-      Copyright (c) 1998-2007 Greg Roelofs.  All rights reserved.
+      Copyright (c) 1998-2008 Greg Roelofs.  All rights reserved.

      This software is provided "as is," without warranty of any kind,
      express or implied.  In no event shall the author or contributors
@@ -83,7 +86,7 @@

 #define PROGNAME  "rpng2-win"
 #define LONGNAME  "Progressive PNG Viewer for Windows"
-#define VERSION   "2.00 of 2 June 2007"
+#define VERSION   "2.02 of 16 March 2008"

 #include <stdio.h>
 #include <stdlib.h>
@@ -414,41 +417,11 @@ int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrevInst, PSTR cmd, int showmode)
        }
    }

-    if (!filename) {
+    if (!filename)
        ++error;
-    } else if (!(infile = fopen(filename, "rb"))) {
-        fprintf(stderr, PROGNAME ":  can't open PNG file [%s]\n", filename);
-        ++error;
-    } else {
-        incount = fread(inbuf, 1, INBUFSIZE, infile);
-        if (incount < 8 || !readpng2_check_sig(inbuf, 8)) {
-            fprintf(stderr, PROGNAME
-              ":  [%s] is not a PNG file: incorrect signature\n",
-              filename);
-            ++error;
-        } else if ((rc = readpng2_init(&rpng2_info)) != 0) {
-            switch (rc) {
-                case 2:
-                    fprintf(stderr, PROGNAME
-                      ":  [%s] has bad IHDR (libpng longjmp)\n",
-                      filename);
-                    break;
-                case 4:
-                    fprintf(stderr, PROGNAME ":  insufficient memory\n");
-                    break;
-                default:
-                    fprintf(stderr, PROGNAME
-                      ":  unknown readpng2_init() error\n");
-                    break;
-            }
-            ++error;
-        }
-        if (error)
-            fclose(infile);
-    }


-    /* usage screen */
+    /* print usage screen if any errors up to this point */

    if (error) {
        int ch;
@@ -488,6 +461,48 @@ int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrevInst, PSTR cmd, int showmode)
            ch = _getch();
        while (ch != 'q' && ch != 'Q' && ch != 0x1B);
        exit(1);
+    }
+
+
+    if (!(infile = fopen(filename, "rb"))) {
+        fprintf(stderr, PROGNAME ":  can't open PNG file [%s]\n", filename);
+        ++error;
+    } else {
+        incount = fread(inbuf, 1, INBUFSIZE, infile);
+        if (incount < 8 || !readpng2_check_sig(inbuf, 8)) {
+            fprintf(stderr, PROGNAME
+              ":  [%s] is not a PNG file: incorrect signature\n",
+              filename);
+            ++error;
+        } else if ((rc = readpng2_init(&rpng2_info)) != 0) {
+            switch (rc) {
+                case 2:
+                    fprintf(stderr, PROGNAME
+                      ":  [%s] has bad IHDR (libpng longjmp)\n", filename);
+                    break;
+                case 4:
+                    fprintf(stderr, PROGNAME ":  insufficient memory\n");
+                    break;
+                default:
+                    fprintf(stderr, PROGNAME
+                      ":  unknown readpng2_init() error\n");
+                    break;
+            }
+            ++error;
+        }
+        if (error)
+            fclose(infile);
+    }
+
+
+    if (error) {
+        int ch;
+
+        fprintf(stderr, PROGNAME ":  aborting.\n");
+        do
+            ch = _getch();
+        while (ch != 'q' && ch != 'Q' && ch != 0x1B);
+        exit(2);
    } else {
        fprintf(stderr, "\n%s %s:  %s\n", PROGNAME, VERSION, appname);
        fprintf(stderr,
@@ -519,7 +534,7 @@ int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrevInst, PSTR cmd, int showmode)
    } else
        rpng2_info.need_bgcolor = TRUE;

-    rpng2_info.done = FALSE;
+    rpng2_info.state = kPreInit;
    rpng2_info.mainprog_init = rpng2_win_init;
    rpng2_info.mainprog_display_row = rpng2_win_display_row;
    rpng2_info.mainprog_finish_display = rpng2_win_finish_display;
@@ -539,10 +554,27 @@ int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrevInst, PSTR cmd, int showmode)
        if (readpng2_decode_data(&rpng2_info, inbuf, incount))
            ++error;
        Trace((stderr, "done with readpng2_decode_data()\n"))
-        if (error || feof(infile) || rpng2_info.done)
+
+        if (error || incount != INBUFSIZE || rpng2_info.state == kDone) {
+            if (rpng2_info.state == kDone) {
+                Trace((stderr, "done decoding PNG image\n"))
+            } else if (ferror(infile)) {
+                fprintf(stderr, PROGNAME
+                  ":  error while reading PNG image file\n");
+                exit(3);
+            } else if (feof(infile)) {
+                fprintf(stderr, PROGNAME ":  end of file reached "
+                  "(unexpectedly) while reading PNG image file\n");
+                exit(3);
+            } else /* if (error) */ {
+                // will print error message below
+            }
            break;
+        }
+
        if (timing)
            Sleep(1000L);
+
        incount = fread(inbuf, 1, INBUFSIZE, infile);
    }

@@ -589,7 +621,7 @@ static void rpng2_win_init()
    ulg rowbytes = rpng2_info.rowbytes;

    Trace((stderr, "beginning rpng2_win_init()\n"))
-    Trace((stderr, "  rowbytes = %ld\n", rpng2_info.rowbytes))
+    Trace((stderr, "  rowbytes = %d\n", rpng2_info.rowbytes))
    Trace((stderr, "  width  = %ld\n", rpng2_info.width))
    Trace((stderr, "  height = %ld\n", rpng2_info.height))

@@ -619,6 +651,8 @@ static void rpng2_win_init()
        readpng2_cleanup(&rpng2_info);
        return;
    }
+
+    rpng2_info.state = kWindowInit;
 }


@@ -1114,7 +1148,7 @@ static void rpng2_win_finish_display()
     * we have nothing to do here except set a flag and let the user know
     * that the image is done */

-    rpng2_info.done = TRUE;
+    rpng2_info.state = kDone;
    printf(
      "Done.  Press Q, Esc or mouse button 1 (within image window) to quit.\n");
    fflush(stdout);
--- a/contrib/gregbook/rpng2-x.c
+++ b/contrib/gregbook/rpng2-x.c
@@ -12,7 +12,7 @@
   Thanks to Adam Costello and Pieter S. van der Meulen for the "diamond"
   and "radial waves" patterns, respectively.

-   to do:
+   to do (someday, maybe):
    - fix expose/redraw code:  don't draw entire row if only part exposed
    - 8-bit (colormapped) X support
    - finish resizable checkerboard-gradient (sizes 4-128?)
@@ -36,10 +36,14 @@
    - 1.32:  added AMD64/EM64T support (__x86_64__); added basic expose/redraw
              handling
    - 2.00:  dual-licensed (added GNU GPL)
+    - 2.01:  fixed 64-bit typo in readpng2.c; fixed -pause usage description
+    - 2.02:  fixed improper display of usage screen on PNG error(s); fixed
+              unexpected-EOF and file-read-error cases; fixed Trace() cut-and-
+              paste bugs

  ---------------------------------------------------------------------------

-      Copyright (c) 1998-2007 Greg Roelofs.  All rights reserved.
+      Copyright (c) 1998-2008 Greg Roelofs.  All rights reserved.

      This software is provided "as is," without warranty of any kind,
      express or implied.  In no event shall the author or contributors
@@ -90,7 +94,7 @@

 #define PROGNAME  "rpng2-x"
 #define LONGNAME  "Progressive PNG Viewer for X"
-#define VERSION   "2.00 of 2 June 2007"
+#define VERSION   "2.02 of 16 March 2008"
 #define RESNAME   "rpng2"	/* our X resource application name */
 #define RESCLASS  "Rpng"	/* our X resource class name */

@@ -453,49 +457,11 @@ int main(int argc, char **argv)
        }
    }

-    if (!filename) {
+    if (!filename)
        ++error;
-    } else if (!(infile = fopen(filename, "rb"))) {
-        fprintf(stderr, PROGNAME ":  can't open PNG file [%s]\n", filename);
-        ++error;
-    } else {
-        incount = fread(inbuf, 1, INBUFSIZE, infile);
-        if (incount < 8 || !readpng2_check_sig(inbuf, 8)) {
-            fprintf(stderr, PROGNAME
-              ":  [%s] is not a PNG file: incorrect signature\n",
-              filename);
-            ++error;
-        } else if ((rc = readpng2_init(&rpng2_info)) != 0) {
-            switch (rc) {
-                case 2:
-                    fprintf(stderr, PROGNAME
-                      ":  [%s] has bad IHDR (libpng longjmp)\n",
-                      filename);
-                    break;
-                case 4:
-                    fprintf(stderr, PROGNAME ":  insufficient memory\n");
-                    break;
-                default:
-                    fprintf(stderr, PROGNAME
-                      ":  unknown readpng2_init() error\n");
-                    break;
-            }
-            ++error;
-        } else {
-            display = XOpenDisplay(displayname);
-            if (!display) {
-                readpng2_cleanup(&rpng2_info);
-                fprintf(stderr, PROGNAME ":  can't open X display [%s]\n",
-                  displayname? displayname : "default");
-                ++error;
-            }
-        }
-        if (error)
-            fclose(infile);
-    }


-    /* usage screen */
+    /* print usage screen if any errors up to this point */

    if (error) {
        fprintf(stderr, "\n%s %s:  %s\n\n", PROGNAME, VERSION, appname);
@@ -533,7 +499,7 @@ int main(int argc, char **argv)
          "\t\t  row (for demo purposes)\n"
          "    -timing\tenables delay for every block read, to simulate modem\n"
          "\t\t  download of image (~36 Kbps)\n"
-          "    -pause\tpauses after displaying each pass until key pressed\n"
+          "    -pause\tpauses after displaying each pass until mouse clicked\n"
          "\nPress Q, Esc or mouse button 1 (within image window, after image\n"
          "is displayed) to quit.\n"
          "\n", PROGNAME,
@@ -545,6 +511,52 @@ int main(int argc, char **argv)
    }


+    if (!(infile = fopen(filename, "rb"))) {
+        fprintf(stderr, PROGNAME ":  can't open PNG file [%s]\n", filename);
+        ++error;
+    } else {
+        incount = fread(inbuf, 1, INBUFSIZE, infile);
+        if (incount < 8 || !readpng2_check_sig(inbuf, 8)) {
+            fprintf(stderr, PROGNAME
+              ":  [%s] is not a PNG file: incorrect signature\n",
+              filename);
+            ++error;
+        } else if ((rc = readpng2_init(&rpng2_info)) != 0) {
+            switch (rc) {
+                case 2:
+                    fprintf(stderr, PROGNAME
+                      ":  [%s] has bad IHDR (libpng longjmp)\n", filename);
+                    break;
+                case 4:
+                    fprintf(stderr, PROGNAME ":  insufficient memory\n");
+                    break;
+                default:
+                    fprintf(stderr, PROGNAME
+                      ":  unknown readpng2_init() error\n");
+                    break;
+            }
+            ++error;
+        } else {
+            Trace((stderr, "about to call XOpenDisplay()\n"))
+            display = XOpenDisplay(displayname);
+            if (!display) {
+                readpng2_cleanup(&rpng2_info);
+                fprintf(stderr, PROGNAME ":  can't open X display [%s]\n",
+                  displayname? displayname : "default");
+                ++error;
+            }
+        }
+        if (error)
+            fclose(infile);
+    }
+
+
+    if (error) {
+        fprintf(stderr, PROGNAME ":  aborting.\n");
+        exit(2);
+    }
+
+
    /* set the title-bar string, but make sure buffer doesn't overflow */

    alen = strlen(appname);
@@ -567,7 +579,7 @@ int main(int argc, char **argv)
    } else
        rpng2_info.need_bgcolor = TRUE;

-    rpng2_info.done = FALSE;
+    rpng2_info.state = kPreInit;
    rpng2_info.mainprog_init = rpng2_x_init;
    rpng2_info.mainprog_display_row = rpng2_x_display_row;
    rpng2_info.mainprog_finish_display = rpng2_x_finish_display;
@@ -587,10 +599,27 @@ int main(int argc, char **argv)
        if (readpng2_decode_data(&rpng2_info, inbuf, incount))
            ++error;
        Trace((stderr, "done with readpng2_decode_data()\n"))
-        if (error || feof(infile) || rpng2_info.done)
+
+        if (error || incount != INBUFSIZE || rpng2_info.state == kDone) {
+            if (rpng2_info.state == kDone) {
+                Trace((stderr, "done decoding PNG image\n"))
+            } else if (ferror(infile)) {
+                fprintf(stderr, PROGNAME
+                  ":  error while reading PNG image file\n");
+                exit(3);
+            } else if (feof(infile)) {
+                fprintf(stderr, PROGNAME ":  end of file reached "
+                  "(unexpectedly) while reading PNG image file\n");
+                exit(3);
+            } else /* if (error) */ {
+                // will print error message below
+            }
            break;
+        }
+
        if (timing)
            sleep(1);
+
        incount = fread(inbuf, 1, INBUFSIZE, infile);
    }

@@ -610,6 +639,7 @@ int main(int argc, char **argv)
 #ifdef FEATURE_LOOP

    if (loop && bg_image) {
+        Trace((stderr, "entering -loop loop (FEATURE_LOOP)\n"))
        for (;;) {
            int i, use_sleep;
            struct timeval now, then;
@@ -705,13 +735,20 @@ int main(int argc, char **argv)

    /* wait for the user to tell us when to quit */

-    do {
-        XNextEvent(display, &e);
-        if (e.type == Expose) {
-            XExposeEvent *ex = (XExposeEvent *)&e;
-            rpng2_x_redisplay_image (ex->x, ex->y, ex->width, ex->height);
-        }
-    } while (!QUIT(e,k));
+    if (rpng2_info.state >= kWindowInit) {
+        Trace((stderr, "entering final wait-for-quit-event loop\n"))
+        do {
+            XNextEvent(display, &e);
+            if (e.type == Expose) {
+                XExposeEvent *ex = (XExposeEvent *)&e;
+                rpng2_x_redisplay_image (ex->x, ex->y, ex->width, ex->height);
+            }
+        } while (!QUIT(e,k));
+    } else {
+        fprintf(stderr, PROGNAME ":  init callback never called:  probable "
+          "libpng error while decoding PNG metadata\n");
+        exit(4);
+    }


    /* we're done:  clean up all image and X resources and go away */
@@ -736,7 +773,7 @@ static void rpng2_x_init(void)
    ulg rowbytes = rpng2_info.rowbytes;

    Trace((stderr, "beginning rpng2_x_init()\n"))
-    Trace((stderr, "  rowbytes = %ld\n", rpng2_info.rowbytes))
+    Trace((stderr, "  rowbytes = %d\n", rpng2_info.rowbytes))
    Trace((stderr, "  width  = %ld\n", rpng2_info.width))
    Trace((stderr, "  height = %ld\n", rpng2_info.height))

@@ -773,6 +810,8 @@ static void rpng2_x_init(void)
        rpng2_x_cleanup();
        exit(2);
    }
+
+    rpng2_info.state = kWindowInit;
 }


@@ -1556,7 +1595,7 @@ static void rpng2_x_finish_display(void)
     * have nothing to do here except set a flag and let the user know that
     * the image is done */

-    rpng2_info.done = TRUE;
+    rpng2_info.state = kDone;
    printf(
      "Done.  Press Q, Esc or mouse button 1 (within image window) to quit.\n");
    fflush(stdout);
@@ -1581,9 +1620,9 @@ static void rpng2_x_redisplay_image(ulg startcol, ulg startrow,


    Trace((stderr, "beginning display loop (image_channels == %d)\n",
-      image_channels))
-    Trace((stderr, "   (width = %ld, rowbytes = %ld, ximage_rowbytes = %d)\n",
-      rpng2_info.width, image_rowbytes, ximage_rowbytes))
+      rpng2_info.channels))
+    Trace((stderr, "   (width = %ld, rowbytes = %d, ximage_rowbytes = %d)\n",
+      rpng2_info.width, rpng2_info.rowbytes, ximage_rowbytes))
    Trace((stderr, "   (bpp = %d)\n", ximage->bits_per_pixel))
    Trace((stderr, "   (byte_order = %s)\n", ximage->byte_order == MSBFirst?
      "MSBFirst" : (ximage->byte_order == LSBFirst? "LSBFirst" : "unknown")))
--- a/libpng-1.2.25beta03.txt
+++ b/libpng-1.2.25beta03.txt
@@ -1,13 +1,17 @@
 libpng.txt - A description on how to use and modify libpng

- libpng version 1.2.25beta03 - January 22, 2008
+ libpng version 1.2.27rc01 - April 23, 2008
 Updated and distributed by Glenn Randers-Pehrson
 <glennrp at users.sourceforge.net>
 Copyright (c) 1998-2008 Glenn Randers-Pehrson
 For conditions of distribution and use, see copyright
 notice in png.h.

- based on:
+ Based on:
+
+ libpng versions 0.97, January 1998, through 1.2.27rc01 - April 23, 2008
+ Updated and distributed by Glenn Randers-Pehrson
+ Copyright (c) 1998-2008 Glenn Randers-Pehrson

 libpng 1.0 beta 6  version 0.96 May 28, 1997
 Updated and distributed by Andreas Dilger
@@ -47,12 +51,14 @@ a W3C Recommendation and as an ISO Standard (ISO/IEC 15948:2003 (E)) at
 The W3C and ISO documents have identical technical content.

 The PNG-1.2 specification is available at
-<http://www.libpng.org/pub/png/documents/>
+<http://www.libpng.org/pub/png/documents/>.  It is technically equivalent
+to the PNG specification (second edition) but has some additional material.

 The PNG-1.0 specification is available
 as RFC 2083 <http://www.libpng.org/pub/png/documents/> and as a
-W3C Recommendation <http://www.w3.org/TR/REC.png.html>. Some
-additional chunks are described in the special-purpose public chunks
+W3C Recommendation <http://www.w3.org/TR/REC.png.html>.
+
+Some additional chunks are described in the special-purpose public chunks
 documents at <http://www.libpng.org/pub/png/documents/>.

 Other information
@@ -260,15 +266,19 @@ input stream. You must supply the function
         png_unknown_chunkp chunk);
    {
       /* The unknown chunk structure contains your
-          chunk data: */
+          chunk data, along with similar data for any other
+          unknown chunks: */
+
           png_byte name[5];
           png_byte *data;
           png_size_t size;
+
       /* Note that libpng has already taken care of
          the CRC handling */

-       /* put your code here.  Return one of the
-          following: */
+       /* put your code here.  Search for your chunk in the
+          unknown chunk structure, process it, and return one
+          of the following: */

       return (-n); /* chunk had an error */
       return (0); /* did not recognize */
@@ -288,6 +298,11 @@ you can retrieve with

    png_get_user_chunk_ptr(png_ptr);

+If you call the png_set_read_user_chunk_fn() function, then all unknown
+chunks will be saved when read, in case your callback function will need
+one or more of them.  This behavior can be changed with the
+png_set_keep_unknown_chunks() function, described below.
+
 At this point, you can set up a callback function that will be
 called after each row has been read, which you can use to control
 a progress meter or the like.  It's demonstrated in pngtest.c.
@@ -332,13 +347,13 @@ Unknown-chunk handling
 Now you get to set the way the library processes unknown chunks in the
 input PNG stream. Both known and unknown chunks will be read.  Normal
 behavior is that known chunks will be parsed into information in
-various info_ptr members; unknown chunks will be discarded. To change
+various info_ptr members while unknown chunks will be discarded. To change
 this, you can call:

    png_set_keep_unknown_chunks(png_ptr, keep,
        chunk_list, num_chunks);
-    keep       - 0: do not handle as unknown
-                 1: do not keep
+    keep       - 0: default unknown chunk handling
+                 1: ignore; do not keep
                 2: keep only if safe-to-copy
                 3: keep even if unsafe-to-copy
               You can use these definitions:
@@ -361,6 +376,37 @@ instances of png_set_keep_unknown_chunks(), the final instance will
 take precedence.  The IHDR and IEND chunks should not be named in
 chunk_list; if they are, libpng will process them normally anyway.

+Here is an example of the usage of png_set_keep_unknown_chunks(),
+where the private "vpAg" chunk will later be processed by a user chunk
+callback function:
+
+    png_byte vpAg[5]={118, 112,  65, 103, (png_byte) '\0'};
+
+    #if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
+      png_byte unused_chunks[]=
+      {
+        104,  73,  83,  84, (png_byte) '\0',   /* hIST */
+        105,  84,  88, 116, (png_byte) '\0',   /* iTXt */
+        112,  67,  65,  76, (png_byte) '\0',   /* pCAL */
+        115,  67,  65,  76, (png_byte) '\0',   /* sCAL */
+        115,  80,  76,  84, (png_byte) '\0',   /* sPLT */
+        116,  73,  77,  69, (png_byte) '\0',   /* tIME */
+      };
+    #endif
+
+    ...
+
+    #if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
+      /* ignore all unknown chunks: */
+      png_set_keep_unknown_chunks(read_ptr, 1, NULL, 0);
+      /* except for vpAg: */
+      png_set_keep_unknown_chunks(read_ptr, 2, vpAg, 1);
+      /* also ignore unused known chunks: */
+      png_set_keep_unknown_chunks(read_ptr, 1, unused_chunks,
+         (int)sizeof(unused_chunks)/5);
+    #endif
+
+
 The high-level read interface

 At this point there are two ways to proceed; through the high-level
@@ -804,6 +850,7 @@ added.  It expands the sample depth without changing tRNS to alpha.
 At the same time, png_set_gray_1_2_4_to_8() was deprecated, and it
 will be removed from a future version.

+
 PNG can have files with 16 bits per channel.  If you only can handle
 8 bits per channel, this will strip the pixels down to 8 bit.

@@ -1743,6 +1790,11 @@ Some of the more important parts of the png_info are:
                     can also be
                     PNG_INTRAPIXEL_DIFFERENCING)

+If you call png_set_IHDR(), the call must appear before any of the
+other png_set_*() functions, which might require access to some of
+the IHDR settings.  The remaining png_set_*() functions can be called
+in any order.
+
    png_set_PLTE(png_ptr, info_ptr, palette,
       num_palette);
    palette        - the palette for the file
@@ -2391,6 +2443,9 @@ Your malloc_fn() must return NULL in case of failure.  The png_malloc()
 function will normally call png_error() if it receives a NULL from the
 system memory allocator or from your replacement malloc_fn().

+Your free_fn() will never be called with a NULL ptr, since libpng's
+png_free() checks for NULL before calling free_fn().
+
 Input/Output in libpng is done through png_read() and png_write(),
 which currently just call fread() and fwrite().  The FILE * is stored in
 png_struct and is initialized via png_init_io().  If you wish to change
@@ -2796,13 +2851,13 @@ application:

 IX. Y2K Compliance in libpng

-January 22, 2008
+April 23, 2008

 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 1.2.25beta03 are Y2K compliant.  It is my belief that earlier
+upward through 1.2.27rc01 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
--- a/libpng.3
+++ b/libpng.3
--- a/libpngpf.3
+++ b/libpngpf.3
@@ -1,776 +1,266 @@
-.TH LIBPNGPF 3 "January 22, 2008"
+.TH LIBPNGPF 3 "April 23, 2008"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.2.25beta03
+libpng \- Portable Network Graphics (PNG) Reference Library 1.2.27rc01
 (private functions)
 .SH SYNOPSIS
 \fB#include <png.h>\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_build_gamma_table (png_structp \fIpng_ptr\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_build_grayscale_palette (int \fP\fIbit_depth\fP\fB, png_colorp \fIpalette\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_calculate_crc (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIptr\fP\fB, png_size_t \fIlength\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_check_chunk_name (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fIchunk_name\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBpng_size_t png_check_keyword (png_structp \fP\fIpng_ptr\fP\fB, png_charp \fP\fIkey\fP\fB, png_charpp \fInew_key\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_combine_row (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIrow\fP\fB, int \fImask\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_correct_palette (png_structp \fP\fIpng_ptr\fP\fB, png_colorp \fP\fIpalette\fP\fB, int \fInum_palette\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBint png_crc_error (png_structp \fIpng_ptr\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBint png_crc_finish (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fIskip\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_crc_read (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIbuf\fP\fB, png_size_t \fIlength\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBpng_voidp png_create_struct (int \fItype\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBpng_voidp png_create_struct_2 (int \fP\fItype\fP\fB, png_malloc_ptr \fP\fImalloc_fn\fP\fB, png_voidp \fImem_ptr\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBpng_charp png_decompress_chunk (png_structp \fP\fIpng_ptr\fP\fB, int \fP\fIcomp_type\fP\fB, png_charp \fP\fIchunkdata\fP\fB, png_size_t \fP\fIchunklength\fP\fB, png_size_t \fP\fIprefix_length\fP\fB, png_size_t \fI*data_length\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_destroy_struct (png_voidp \fIstruct_ptr\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_destroy_struct_2 (png_voidp \fP\fIstruct_ptr\fP\fB, png_free_ptr \fP\fIfree_fn\fP\fB, png_voidp \fImem_ptr\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_do_background (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_color_16p \fP\fItrans_values\fP\fB, png_color_16p \fP\fIbackground\fP\fB, png_color_16p \fP\fIbackground_1\fP\fB, png_bytep \fP\fIgamma_table\fP\fB, png_bytep \fP\fIgamma_from_1\fP\fB, png_bytep \fP\fIgamma_to_1\fP\fB, png_uint_16pp \fP\fIgamma_16\fP\fB, png_uint_16pp \fP\fIgamma_16_from_1\fP\fB, png_uint_16pp \fP\fIgamma_16_to_1\fP\fB, int \fIgamma_shift\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_do_bgr (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_do_chop (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_do_dither (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_bytep \fP\fIpalette_lookup\fP\fB, png_bytep \fIdither_lookup\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_do_expand (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_color_16p \fItrans_value\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_do_expand_palette (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_colorp \fP\fIpalette\fP\fB, png_bytep \fP\fItrans\fP\fB, int \fInum_trans\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_do_gamma (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_bytep \fP\fIgamma_table\fP\fB, png_uint_16pp \fP\fIgamma_16_table\fP\fB, int \fIgamma_shift\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_do_gray_to_rgb (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_do_invert (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_do_pack (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_uint_32 \fIbit_depth\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_do_packswap (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_do_read_filler (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_uint_32 \fP\fIfiller\fP\fB, png_uint_32 \fIflags\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_do_read_interlace (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, int \fP\fIpass\fP\fB, png_uint_32 \fItransformations\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_do_read_invert_alpha (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_do_read_swap_alpha (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_do_read_transformations (png_structp \fIpng_ptr\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBint png_do_rgb_to_gray (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_do_shift (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_color_8p \fIbit_depth\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_do_strip_filler (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_uint_32 \fIflags\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_do_swap (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_do_unpack (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_do_unshift (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_color_8p \fIsig_bits\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_do_write_interlace (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, int \fIpass\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_do_write_invert_alpha (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_do_write_swap_alpha (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_do_write_transformations (png_structp \fIpng_ptr\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid *png_far_to_near (png_structp png_ptr,png_voidp \fP\fIptr\fP\fB, int \fIcheck\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_flush (png_structp \fIpng_ptr\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_handle_bKGD (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_handle_cHRM (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_handle_gAMA (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_handle_hIST (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_handle_IEND (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP

-\fI\fB
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-
 \fBvoid png_handle_IHDR (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP

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-
 \fBvoid png_handle_iCCP (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP

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-
 \fBvoid png_handle_iTXt (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP

-\fI\fB
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 \fBvoid png_handle_oFFs (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP

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-\fI\fB
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 \fBvoid png_handle_pCAL (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP

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-
-\fI\fB
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 \fBvoid png_handle_pHYs (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_handle_PLTE (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_handle_sBIT (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_handle_sCAL (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_handle_sPLT (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_handle_sRGB (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_handle_tEXt (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP

-\fI\fB
-
-\fI\fB
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 \fBvoid png_handle_tIME (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP

-\fI\fB
-
-\fI\fB
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 \fBvoid png_handle_tRNS (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP

-\fI\fB
-
-\fI\fB
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 \fBvoid png_handle_unknown (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_handle_zTXt (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP

-\fI\fB
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-\fI\fB
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 \fBvoid png_info_destroy (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP

-\fI\fB
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-\fI\fB
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 \fBvoid png_init_mmx_flags (png_structp \fIpng_ptr\fP\fB);\fP

-\fI\fB
-
-\fI\fB
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 \fBvoid png_init_read_transformations (png_structp \fIpng_ptr\fP\fB);\fP

-\fI\fB
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 \fBvoid png_process_IDAT_data (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIbuffer\fP\fB, png_size_t \fIbuffer_length\fP\fB);\fP

-\fI\fB
-
-\fI\fB
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 \fBvoid png_process_some_data (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP

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 \fBvoid png_push_check_crc (png_structp \fIpng_ptr\fP\fB);\fP

-\fI\fB
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 \fBvoid png_push_crc_finish (png_structp \fIpng_ptr\fP\fB);\fP

-\fI\fB
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 \fBvoid png_push_crc_skip (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP

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 \fBvoid png_push_fill_buffer (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIbuffer\fP\fB, png_size_t \fIlength\fP\fB);\fP

-\fI\fB
-
-\fI\fB
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 \fBvoid png_push_handle_tEXt (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP

-\fI\fB
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 \fBvoid png_push_handle_unknown (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP

-\fI\fB
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-\fI\fB
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 \fBvoid png_push_handle_zTXt (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP

-\fI\fB
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 \fBvoid png_push_have_end (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP

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 \fBvoid png_push_have_info (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP

-\fI\fB
-
-\fI\fB
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 \fBvoid png_push_have_row (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fIrow\fP\fB);\fP

-\fI\fB
-
-\fI\fB
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 \fBvoid png_push_process_row (png_structp \fIpng_ptr\fP\fB);\fP

-\fI\fB
-
-\fI\fB
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 \fBvoid png_push_read_chunk (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_push_read_end (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_push_read_IDAT (png_structp \fIpng_ptr\fP\fB);\fP

-\fI\fB
-
-\fI\fB
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 \fBvoid png_push_read_sig (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP

-\fI\fB
-
-\fI\fB
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 \fBvoid png_push_read_tEXt (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_push_read_zTXt (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_push_restore_buffer (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIbuffer\fP\fB, png_size_t \fIbuffer_length\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_push_save_buffer (png_structp \fIpng_ptr\fP\fB);\fP

-\fI\fB
-
-\fI\fB
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 \fBvoid png_read_data (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIdata\fP\fB, png_size_t \fIlength\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_read_filter_row (png_structp \fP\fIpng_ptr\fP\fB, png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_bytep \fP\fIprev_row\fP\fB, int \fIfilter\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_read_finish_row (png_structp \fIpng_ptr\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_read_push_finish_row (png_structp \fIpng_ptr\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_read_start_row (png_structp \fIpng_ptr\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_read_transform_info (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_reset_crc (png_structp \fIpng_ptr\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBint png_set_text_2 (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_textp \fP\fItext_ptr\fP\fB, int \fInum_text\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_write_cHRM (png_structp \fP\fIpng_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
-
-\fI\fB
-
 \fBvoid png_write_cHRM_fixed (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fP\fIwhite_x\fP\fB, png_uint_32 \fP\fIwhite_y\fP\fB, png_uint_32 \fP\fIred_x\fP\fB, png_uint_32 \fP\fIred_y\fP\fB, png_uint_32 \fP\fIgreen_x\fP\fB, png_uint_32 \fP\fIgreen_y\fP\fB, png_uint_32 \fP\fIblue_x\fP\fB, png_uint_32 \fIblue_y\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_write_data (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIdata\fP\fB, png_size_t \fIlength\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_write_filtered_row (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fIfiltered_row\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_write_find_filter (png_structp \fP\fIpng_ptr\fP\fB, png_row_infop \fIrow_info\fP\fB);\fP

-\fI\fB
-
-\fI\fB
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 \fBvoid png_write_finish_row (png_structp \fIpng_ptr\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_write_gAMA (png_structp \fP\fIpng_ptr\fP\fB, double \fIfile_gamma\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_write_gAMA_fixed (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fIint_file_gamma\fP\fB);\fP

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-
-\fI\fB
-
 \fBvoid png_write_hIST (png_structp \fP\fIpng_ptr\fP\fB, png_uint_16p \fP\fIhist\fP\fB, int \fInum_hist\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_write_iCCP (png_structp \fP\fIpng_ptr\fP\fB, png_charp \fP\fIname\fP\fB, int \fP\fIcompression_type\fP\fB, png_charp \fP\fIprofile\fP\fB, int \fIproflen\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_write_IDAT (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIdata\fP\fB, png_size_t \fIlength\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_write_IEND (png_structp \fIpng_ptr\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_write_IHDR (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fP\fIwidth\fP\fB, png_uint_32 \fP\fIheight\fP\fB, int \fP\fIbit_depth\fP\fB, int \fP\fIcolor_type\fP\fB, int \fP\fIcompression_type\fP\fB, int \fP\fIfilter_type\fP\fB, int \fIinterlace_type\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_write_iTXt (png_structp \fP\fIpng_ptr\fP\fB, int \fP\fIcompression\fP\fB, png_charp \fP\fIkey\fP\fB, png_charp \fP\fIlang\fP\fB, png_charp \fP\fItranslated_key\fP\fB, png_charp \fItext\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_write_oFFs (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fP\fIx_offset\fP\fB, png_uint_32 \fP\fIy_offset\fP\fB, int \fIunit_type\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_write_pCAL (png_structp \fP\fIpng_ptr\fP\fB, png_charp \fP\fIpurpose\fP\fB, png_int_32 \fP\fIX0\fP\fB, png_int_32 \fP\fIX1\fP\fB, int \fP\fItype\fP\fB, int \fP\fInparams\fP\fB, png_charp \fP\fIunits\fP\fB, png_charpp \fIparams\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_write_pHYs (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fP\fIx_pixels_per_unit\fP\fB, png_uint_32 \fP\fIy_pixels_per_unit\fP\fB, int \fIunit_type\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_write_PLTE (png_structp \fP\fIpng_ptr\fP\fB, png_colorp \fP\fIpalette\fP\fB, png_uint_32 \fInum_pal\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_write_sBIT (png_structp \fP\fIpng_ptr\fP\fB, png_color_8p \fP\fIsbit\fP\fB, int \fIcolor_type\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_write_sCAL (png_structp \fP\fIpng_ptr\fP\fB, png_charp \fP\fIunit\fP\fB, double \fP\fIwidth\fP\fB, double \fIheight\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_write_sCAL_s (png_structp \fP\fIpng_ptr\fP\fB, png_charp \fP\fIunit\fP\fB, png_charp \fP\fIwidth\fP\fB, png_charp \fIheight\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_write_sig (png_structp \fIpng_ptr\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_write_sRGB (png_structp \fP\fIpng_ptr\fP\fB, int \fIintent\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_write_sPLT (png_structp \fP\fIpng_ptr\fP\fB, png_spalette_p \fIpalette\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_write_start_row (png_structp \fIpng_ptr\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_write_tEXt (png_structp \fP\fIpng_ptr\fP\fB, png_charp \fP\fIkey\fP\fB, png_charp \fP\fItext\fP\fB, png_size_t \fItext_len\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_write_tIME (png_structp \fP\fIpng_ptr\fP\fB, png_timep \fImod_time\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_write_tRNS (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fItrans\fP\fB, png_color_16p \fP\fIvalues\fP\fB, int \fP\fInumber\fP\fB, int \fIcolor_type\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_write_zTXt (png_structp \fP\fIpng_ptr\fP\fB, png_charp \fP\fIkey\fP\fB, png_charp \fP\fItext\fP\fB, png_size_t \fP\fItext_len\fP\fB, int \fIcompression\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoidpf png_zalloc (voidpf \fP\fIpng_ptr\fP\fB, uInt \fP\fIitems\fP\fB, uInt \fIsize\fP\fB);\fP

-\fI\fB
-
-\fI\fB
-
 \fBvoid png_zfree (voidpf \fP\fIpng_ptr\fP\fB, voidpf \fIptr\fP\fB);\fP

 \fI\fB

-\fI\fB
-
 .SH DESCRIPTION
 The functions listed above are used privately by libpng
 and are not recommended for use by applications.  They are
--- a/png.5
+++ b/png.5
@@ -1,4 +1,4 @@
-.TH PNG 5 "January 22, 2008"
+.TH PNG 5 "April 23, 2008"
 .SH NAME
 png \- Portable Network Graphics (PNG) format
 .SH DESCRIPTION
@@ -35,7 +35,7 @@ PNG 1.0 specification, October 1996:
 RFC 2083
 .IP
 .br
-ftp://ds.internic.net/rfc/rfc2083.txt
+ftp://ftp.rfc-editor.org:/in-notes/rfc2083.txt
 .br
 or (as a W3C Recommendation) at
 .br
--- a/png.c
+++ b/png.c
@@ -13,7 +13,7 @@
 #include "png.h"

 /* Generate a compiler error if there is an old png.h in the search path. */
-typedef version_1_2_25beta03 Your_png_h_is_not_version_1_2_25beta03;
+typedef version_1_2_27rc01 Your_png_h_is_not_version_1_2_27rc01;

 /* Version information for C files.  This had better match the version
 * string defined in png.h.  */
@@ -693,8 +693,8 @@ png_charp PNGAPI
 png_get_copyright(png_structp png_ptr)
 {
   png_ptr = png_ptr;  /* silence compiler warning about unused png_ptr */
-   return ((png_charp) "\n libpng version 1.2.25beta03 - January 22, 2008\n\
-   Copyright (c) 1998-2007 Glenn Randers-Pehrson\n\
+   return ((png_charp) "\n libpng version 1.2.27rc01 - April 23, 2008\n\
+   Copyright (c) 1998-2008 Glenn Randers-Pehrson\n\
   Copyright (c) 1996-1997 Andreas Dilger\n\
   Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.\n");
 }
--- a/png.h
+++ b/png.h
@@ -1,7 +1,6 @@
-
 /* png.h - header file for PNG reference library
 *
- * libpng version 1.2.25beta03 - January 22, 2008
+ * libpng version 1.2.27rc01 - April 23, 2008
 * Copyright (c) 1998-2008 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 +8,7 @@
 * 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 1.2.25beta03 - January 22, 2008: Glenn
+ *  libpng versions 0.97, January 1998, through 1.2.27rc01 - April 23, 2008: Glenn
 *  See also "Contributing Authors", below.
 *
 * Note about libpng version numbers:
@@ -175,7 +174,15 @@
 *    1.2.24beta01-02         13    10224  12.so.0.24[.0]
 *    1.2.24rc01              13    10224  12.so.0.24[.0]
 *    1.2.24                  13    10224  12.so.0.24[.0]
- *    1.2.25beta01-03         13    10225  12.so.0.25[.0]
+ *    1.2.25beta01-06         13    10225  12.so.0.25[.0]
+ *    1.2.25rc01-02           13    10225  12.so.0.25[.0]
+ *    1.0.31                  10    10031  10.so.0.31[.0]
+ *    1.2.25                  13    10225  12.so.0.25[.0]
+ *    1.2.26beta01-06         13    10226  12.so.0.26[.0]
+ *    1.2.26rc01              13    10226  12.so.0.26[.0]
+ *    1.2.26                  13    10226  12.so.0.26[.0]
+ *    1.0.32                  10    10032  10.so.0.32[.0]
+ *    1.2.27beta01-06         13    10227  12.so.0.27[.0]
 *
 *    Henceforth the source version will match the shared-library major
 *    and minor numbers; the shared-library major version number will be
@@ -185,7 +192,7 @@
 *    to the source version x.y.z (leading zeros in y and z).  Beta versions
 *    were given the previous public release number plus a letter, until
 *    version 1.0.6j; from then on they were given the upcoming public
- *    release number plus "betaNN" or "rcN".
+ *    release number plus "betaNN" or "rcNN".
 *
 *    Binary incompatibility exists only when applications make direct access
 *    to the info_ptr or png_ptr members through png.h, and the compiled
@@ -205,7 +212,7 @@
 * If you modify libpng you may insert additional notices immediately following
 * this sentence.
 *
- * libpng versions 1.2.6, August 15, 2004, through 1.2.25beta03, January 22, 2008, are
+ * libpng versions 1.2.6, August 15, 2004, through 1.2.27rc01, April 23, 2008, are
 * Copyright (c) 2004, 2006-2008 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:
@@ -317,13 +324,13 @@
 * Y2K compliance in libpng:
 * =========================
 *
- *    January 22, 2008
+ *    April 23, 2008
 *
 *    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 1.2.25beta03 are Y2K compliant.  It is my belief that earlier
+ *    upward through 1.2.27rc01 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
@@ -379,9 +386,9 @@
 */

 /* Version information for png.h - this should match the version in png.c */
-#define PNG_LIBPNG_VER_STRING "1.2.25beta03"
+#define PNG_LIBPNG_VER_STRING "1.2.27rc01"
 #define PNG_HEADER_VERSION_STRING \
-   " libpng version 1.2.25beta03 - January 22, 2008\n"
+   " libpng version 1.2.27rc01 - April 23, 2008\n"

 #define PNG_LIBPNG_VER_SONUM   0
 #define PNG_LIBPNG_VER_DLLNUM  13
@@ -389,11 +396,11 @@
 /* These should match the first 3 components of PNG_LIBPNG_VER_STRING: */
 #define PNG_LIBPNG_VER_MAJOR   1
 #define PNG_LIBPNG_VER_MINOR   2
-#define PNG_LIBPNG_VER_RELEASE 25
+#define PNG_LIBPNG_VER_RELEASE 27
 /* This should match the numeric part of the final component of
 * PNG_LIBPNG_VER_STRING, omitting any leading zero: */

-#define PNG_LIBPNG_VER_BUILD  03
+#define PNG_LIBPNG_VER_BUILD  01

 /* Release Status */
 #define PNG_LIBPNG_BUILD_ALPHA    1
@@ -410,14 +417,14 @@
 #define PNG_LIBPNG_BUILD_SPECIAL 32 /* Cannot be OR'ed with
                                       PNG_LIBPNG_BUILD_PRIVATE */

-#define PNG_LIBPNG_BUILD_BASE_TYPE PNG_LIBPNG_BUILD_BETA
+#define PNG_LIBPNG_BUILD_BASE_TYPE PNG_LIBPNG_BUILD_RC

 /* Careful here.  At one time, Guy wanted to use 082, but that would be octal.
 * We must not include leading zeros.
 * Versions 0.7 through 1.0.0 were in the range 0 to 100 here (only
 * version 1.0.0 was mis-numbered 100 instead of 10000).  From
 * version 1.0.1 it's    xxyyzz, where x=major, y=minor, z=release */
-#define PNG_LIBPNG_VER 10225 /* 1.2.25 */
+#define PNG_LIBPNG_VER 10227 /* 1.2.27 */

 #ifndef PNG_VERSION_INFO_ONLY
 /* include the compression library's header */
@@ -1425,13 +1432,16 @@ struct png_struct_def
   /* storage for unknown chunk that the library doesn't recognize. */
   png_unknown_chunk unknown_chunk;
 #endif
+
+/* New members added in libpng-1.2.26 */
+  png_uint_32 old_big_row_buf_size, old_prev_row_size;
 };


 /* This triggers a compiler error in png.c, if png.c and png.h
 * do not agree upon the version number.
 */
-typedef png_structp version_1_2_25beta03;
+typedef png_structp version_1_2_27rc01;

 typedef png_struct FAR * FAR * png_structpp;

--- a/pngconf.h
+++ b/pngconf.h
@@ -1,7 +1,7 @@

 /* pngconf.h - machine configurable file for libpng
 *
- * libpng version 1.2.25beta03 - January 22, 2008
+ * libpng version 1.2.27rc01 - April 23, 2008
 * For conditions of distribution and use, see copyright notice in png.h
 * Copyright (c) 1998-2008 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
--- a/pngmem.c
+++ b/pngmem.c
@@ -1,9 +1,9 @@

 /* pngmem.c - stub functions for memory allocation
 *
- * Last changed in libpng 1.2.13 November 13, 2006
+ * Last changed in libpng 1.2.27 [April 23, 2008]
 * For conditions of distribution and use, see copyright notice in png.h
- * Copyright (c) 1998-2006 Glenn Randers-Pehrson
+ * Copyright (c) 1998-2008 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.)
 *
@@ -293,7 +293,7 @@ png_free_default(png_structp png_ptr, png_voidp ptr)
 {
 #endif /* PNG_USER_MEM_SUPPORTED */

-   if(png_ptr == NULL) return;
+   if(png_ptr == NULL || ptr == NULL) return;

   if (png_ptr->offset_table != NULL)
   {
@@ -456,7 +456,7 @@ png_malloc_default(png_structp png_ptr, png_uint_32 size)
   if (size > (png_uint_32)65536L)
   {
 #ifndef PNG_USER_MEM_SUPPORTED
-      if(png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
+      if ((png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
         png_error(png_ptr, "Cannot Allocate > 64K");
      else
 #endif
--- a/pngpread.c
+++ b/pngpread.c
@@ -1,7 +1,7 @@

 /* pngpread.c - read a png file in push mode
 *
- * Last changed in libpng 1.2.25 [January 22, 2008]
+ * Last changed in libpng 1.2.27 [April 23, 2008]
 * For conditions of distribution and use, see copyright notice in png.h
 * Copyright (c) 1998-2008 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -224,6 +224,8 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
   {
      if (png_ptr->push_length + 4 > png_ptr->buffer_size)
      {
+         if (png_ptr->push_length != 13)
+            png_error(png_ptr, "Invalid IHDR length");
         png_push_save_buffer(png_ptr);
         return;
      }
@@ -1018,32 +1020,37 @@ png_read_push_finish_row(png_structp png_ptr)
         png_ptr->rowbytes + 1);
      do
      {
-         png_ptr->pass++;
-         if ((png_ptr->pass == 1 && png_ptr->width < 5) ||
-             (png_ptr->pass == 3 && png_ptr->width < 3) ||
-             (png_ptr->pass == 5 && png_ptr->width < 2))
-           png_ptr->pass++;
+         int pass;
+         pass = png_ptr->pass;
+         pass++;
+         if ((pass == 1 && png_ptr->width < 5) ||
+             (pass == 3 && png_ptr->width < 3) ||
+             (pass == 5 && png_ptr->width < 2))
+           pass++;

-         if (png_ptr->pass > 7)
-            png_ptr->pass--;
-         if (png_ptr->pass >= 7)
-            break;
+         if (pass > 7)
+            pass--;
+         png_ptr->pass = (png_byte) pass;
+         if (pass < 7)
+           {
+             png_ptr->iwidth = (png_ptr->width +
+                png_pass_inc[pass] - 1 -
+                png_pass_start[pass]) /
+                png_pass_inc[pass];

-         png_ptr->iwidth = (png_ptr->width +
-            png_pass_inc[png_ptr->pass] - 1 -
-            png_pass_start[png_ptr->pass]) /
-            png_pass_inc[png_ptr->pass];
+             png_ptr->irowbytes = PNG_ROWBYTES(png_ptr->pixel_depth,
+                png_ptr->iwidth) + 1;

-         png_ptr->irowbytes = PNG_ROWBYTES(png_ptr->pixel_depth,
-            png_ptr->iwidth) + 1;
+             if (png_ptr->transformations & PNG_INTERLACE)
+                break;

-         if (png_ptr->transformations & PNG_INTERLACE)
-            break;
-
-         png_ptr->num_rows = (png_ptr->height +
-            png_pass_yinc[png_ptr->pass] - 1 -
-            png_pass_ystart[png_ptr->pass]) /
-            png_pass_yinc[png_ptr->pass];
+             png_ptr->num_rows = (png_ptr->height +
+                png_pass_yinc[pass] - 1 -
+                png_pass_ystart[pass]) /
+                png_pass_yinc[pass];
+           }
+         else
+           break;

      } while (png_ptr->iwidth == 0 || png_ptr->num_rows == 0);
   }
@@ -1495,9 +1502,14 @@ png_push_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32
                 png_sizeof(png_ptr->unknown_chunk.name));
      png_ptr->unknown_chunk.name[png_sizeof(png_ptr->unknown_chunk.name)-1]='\0';

-      png_ptr->unknown_chunk.data = (png_bytep)png_malloc(png_ptr, length);
      png_ptr->unknown_chunk.size = (png_size_t)length;
-      png_crc_read(png_ptr, (png_bytep)png_ptr->unknown_chunk.data, length);
+      if (length == 0)
+         png_ptr->unknown_chunk.data = NULL;
+      else
+      {
+         png_ptr->unknown_chunk.data = (png_bytep)png_malloc(png_ptr, length);
+         png_crc_read(png_ptr, (png_bytep)png_ptr->unknown_chunk.data, length);
+      }
 #if defined(PNG_READ_USER_CHUNKS_SUPPORTED)
      if(png_ptr->read_user_chunk_fn != NULL)
      {
--- a/pngread.c
+++ b/pngread.c
@@ -1,7 +1,7 @@

 /* pngread.c - read a PNG file
 *
- * Last changed in libpng 1.2.25 [January 22, 2008]
+ * Last changed in libpng 1.2.25 [February 18, 2008]
 * For conditions of distribution and use, see copyright notice in png.h
 * Copyright (c) 1998-2008 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -1113,14 +1113,15 @@ png_destroy_read_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr,
   if (png_ptr_ptr != NULL)
   {
      png_ptr = *png_ptr_ptr;
-#ifdef PNG_USER_MEM_SUPPORTED
-      free_fn = png_ptr->free_fn;
-      mem_ptr = png_ptr->mem_ptr;
-#endif
   }
-   else
+   if (png_ptr == NULL)
      return;

+#ifdef PNG_USER_MEM_SUPPORTED
+   free_fn = png_ptr->free_fn;
+   mem_ptr = png_ptr->mem_ptr;
+#endif
+
   if (info_ptr_ptr != NULL)
      info_ptr = *info_ptr_ptr;

@@ -1158,16 +1159,13 @@ png_destroy_read_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr,
      *end_info_ptr_ptr = NULL;
   }

-   if (png_ptr != NULL)
-   {
 #ifdef PNG_USER_MEM_SUPPORTED
-      png_destroy_struct_2((png_voidp)png_ptr, (png_free_ptr)free_fn,
-          (png_voidp)mem_ptr);
+   png_destroy_struct_2((png_voidp)png_ptr, (png_free_ptr)free_fn,
+       (png_voidp)mem_ptr);
 #else
-      png_destroy_struct((png_voidp)png_ptr);
+   png_destroy_struct((png_voidp)png_ptr);
 #endif
-      *png_ptr_ptr = NULL;
-   }
+   *png_ptr_ptr = NULL;
 }

 /* free all memory used by the read (old method) */
--- a/pngrtran.c
+++ b/pngrtran.c
@@ -1,7 +1,7 @@

 /* pngrtran.c - transforms the data in a row for PNG readers
 *
- * Last changed in libpng 1.2.25 [January 22, 2008]
+ * Last changed in libpng 1.2.27 [April 23, 2008]
 * For conditions of distribution and use, see copyright notice in png.h
 * Copyright (c) 1998-2008 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -548,9 +548,7 @@ png_set_expand(png_structp png_ptr)
   png_debug(1, "in png_set_expand\n");
   if(png_ptr == NULL) return;
   png_ptr->transformations |= (PNG_EXPAND | PNG_EXPAND_tRNS);
-#ifdef PNG_WARN_UNINITIALIZED_ROW
   png_ptr->flags &= ~PNG_FLAG_ROW_INIT;
-#endif
 }

 /* GRR 19990627:  the following three functions currently are identical
@@ -577,9 +575,7 @@ png_set_palette_to_rgb(png_structp png_ptr)
   png_debug(1, "in png_set_palette_to_rgb\n");
   if(png_ptr == NULL) return;
   png_ptr->transformations |= (PNG_EXPAND | PNG_EXPAND_tRNS);
-#ifdef PNG_WARN_UNINITIALIZED_ROW
   png_ptr->flags &= ~PNG_FLAG_ROW_INIT;
-#endif
 }

 #if !defined(PNG_1_0_X)
@@ -590,9 +586,7 @@ png_set_expand_gray_1_2_4_to_8(png_structp png_ptr)
   png_debug(1, "in png_set_expand_gray_1_2_4_to_8\n");
   if(png_ptr == NULL) return;
   png_ptr->transformations |= PNG_EXPAND;
-#ifdef PNG_WARN_UNINITIALIZED_ROW
   png_ptr->flags &= ~PNG_FLAG_ROW_INIT;
-#endif
 }
 #endif

@@ -615,9 +609,7 @@ png_set_tRNS_to_alpha(png_structp png_ptr)
 {
   png_debug(1, "in png_set_tRNS_to_alpha\n");
   png_ptr->transformations |= (PNG_EXPAND | PNG_EXPAND_tRNS);
-#ifdef PNG_WARN_UNINITIALIZED_ROW
   png_ptr->flags &= ~PNG_FLAG_ROW_INIT;
-#endif
 }
 #endif /* defined(PNG_READ_EXPAND_SUPPORTED) */

@@ -627,9 +619,7 @@ png_set_gray_to_rgb(png_structp png_ptr)
 {
   png_debug(1, "in png_set_gray_to_rgb\n");
   png_ptr->transformations |= PNG_GRAY_TO_RGB;
-#ifdef PNG_WARN_UNINITIALIZED_ROW
   png_ptr->flags &= ~PNG_FLAG_ROW_INIT;
-#endif
 }
 #endif

@@ -967,7 +957,7 @@ png_init_read_transformations(png_structp png_ptr)
 	    /* Prevent the transformations being done again, and make sure
 	     * that the now spurious alpha channel is stripped - the code
 	     * has just reduced background composition and gamma correction
-	     * to a simply alpha channel strip.
+	     * to a simple alpha channel strip.
 	     */
 	    png_ptr->transformations &= ~PNG_BACKGROUND;
 	    png_ptr->transformations &= ~PNG_GAMMA;
@@ -1138,7 +1128,8 @@ png_read_transform_info(png_structp png_ptr, png_infop info_ptr)
   {
      if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
      {
-         if (png_ptr->num_trans && (png_ptr->transformations & PNG_EXPAND_tRNS))
+         if (png_ptr->num_trans &&
+              (png_ptr->transformations & PNG_EXPAND_tRNS))
            info_ptr->color_type = PNG_COLOR_TYPE_RGB_ALPHA;
         else
            info_ptr->color_type = PNG_COLOR_TYPE_RGB;
@@ -1151,8 +1142,10 @@ png_read_transform_info(png_structp png_ptr, png_infop info_ptr)
         {
            if (png_ptr->transformations & PNG_EXPAND_tRNS)
              info_ptr->color_type |= PNG_COLOR_MASK_ALPHA;
+#if 0 /* Removed from libpng-1.2.27 */
            else
              info_ptr->color_type |= PNG_COLOR_MASK_COLOR;
+#endif
         }
         if (info_ptr->bit_depth < 8)
            info_ptr->bit_depth = 8;
--- a/pngrutil.c
+++ b/pngrutil.c
@@ -1,7 +1,7 @@

 /* pngrutil.c - utilities to read a PNG file
 *
- * Last changed in libpng 1.2.25 [January 22, 2008]
+ * Last changed in libpng 1.2.27 [April 23, 2008]
 * For conditions of distribution and use, see copyright notice in png.h
 * Copyright (c) 1998-2008 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -1241,15 +1241,9 @@ void /* PRIVATE */
 png_handle_tRNS(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
 {
   png_byte readbuf[PNG_MAX_PALETTE_LENGTH];
-   int bit_mask;

   png_debug(1, "in png_handle_tRNS\n");

-   /* For non-indexed color, mask off any bits in the tRNS value that
-    * exceed the bit depth.  Some creators were writing extra bits there.
-    * This is not needed for indexed color. */
-   bit_mask = (1 << png_ptr->bit_depth) - 1;
-
   if (!(png_ptr->mode & PNG_HAVE_IHDR))
      png_error(png_ptr, "Missing IHDR before tRNS");
   else if (png_ptr->mode & PNG_HAVE_IDAT)
@@ -1278,7 +1272,7 @@ png_handle_tRNS(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)

      png_crc_read(png_ptr, buf, 2);
      png_ptr->num_trans = 1;
-      png_ptr->trans_values.gray = png_get_uint_16(buf) & bit_mask;
+      png_ptr->trans_values.gray = png_get_uint_16(buf);
   }
   else if (png_ptr->color_type == PNG_COLOR_TYPE_RGB)
   {
@@ -1292,9 +1286,9 @@ png_handle_tRNS(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
      }
      png_crc_read(png_ptr, buf, (png_size_t)length);
      png_ptr->num_trans = 1;
-      png_ptr->trans_values.red = png_get_uint_16(buf) & bit_mask;
-      png_ptr->trans_values.green = png_get_uint_16(buf + 2) & bit_mask;
-      png_ptr->trans_values.blue = png_get_uint_16(buf + 4) & bit_mask;
+      png_ptr->trans_values.red = png_get_uint_16(buf);
+      png_ptr->trans_values.green = png_get_uint_16(buf + 2);
+      png_ptr->trans_values.blue = png_get_uint_16(buf + 4);
   }
   else if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
   {
@@ -1393,7 +1387,7 @@ png_handle_bKGD(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
   if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
   {
      png_ptr->background.index = buf[0];
-      if(info_ptr->num_palette)
+      if (info_ptr && info_ptr->num_palette)
      {
          if(buf[0] > info_ptr->num_palette)
          {
@@ -2227,9 +2221,14 @@ png_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
                  (png_charp)png_ptr->chunk_name, 
                  png_sizeof(png_ptr->unknown_chunk.name));
       png_ptr->unknown_chunk.name[png_sizeof(png_ptr->unknown_chunk.name)-1] = '\0';
-       png_ptr->unknown_chunk.data = (png_bytep)png_malloc(png_ptr, length);
       png_ptr->unknown_chunk.size = (png_size_t)length;
-       png_crc_read(png_ptr, (png_bytep)png_ptr->unknown_chunk.data, length);
+       if (length == 0)
+         png_ptr->unknown_chunk.data = NULL;
+       else
+       {
+         png_ptr->unknown_chunk.data = (png_bytep)png_malloc(png_ptr, length);
+         png_crc_read(png_ptr, (png_bytep)png_ptr->unknown_chunk.data, length);
+       }
 #if defined(PNG_READ_USER_CHUNKS_SUPPORTED)
       if(png_ptr->read_user_chunk_fn != NULL)
       {
@@ -2251,7 +2250,7 @@ png_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
       }
       else
 #endif
-         png_set_unknown_chunks(png_ptr, info_ptr, &png_ptr->unknown_chunk, 1);
+       png_set_unknown_chunks(png_ptr, info_ptr, &png_ptr->unknown_chunk, 1);
       png_free(png_ptr, png_ptr->unknown_chunk.data);
       png_ptr->unknown_chunk.data = NULL;
   }
@@ -2851,6 +2850,7 @@ void /* PRIVATE */
 png_read_finish_row(png_structp png_ptr)
 {
 #ifdef PNG_USE_LOCAL_ARRAYS
+#ifdef PNG_READ_INTERLACING_SUPPORTED
   /* arrays to facilitate easy interlacing - use pass (0 - 6) as index */

   /* start of interlace block */
@@ -2864,6 +2864,7 @@ png_read_finish_row(png_structp png_ptr)

   /* offset to next interlace block in the y direction */
   PNG_CONST int png_pass_yinc[7] = {8, 8, 8, 4, 4, 2, 2};
+#endif /* PNG_READ_INTERLACING_SUPPORTED */
 #endif

   png_debug(1, "in png_read_finish_row\n");
@@ -2871,6 +2872,7 @@ png_read_finish_row(png_structp png_ptr)
   if (png_ptr->row_number < png_ptr->num_rows)
      return;

+#ifdef PNG_READ_INTERLACING_SUPPORTED
   if (png_ptr->interlaced)
   {
      png_ptr->row_number = 0;
@@ -2905,6 +2907,7 @@ png_read_finish_row(png_structp png_ptr)
      if (png_ptr->pass < 7)
         return;
   }
+#endif /* PNG_READ_INTERLACING_SUPPORTED */

   if (!(png_ptr->flags & PNG_FLAG_ZLIB_FINISHED))
   {
@@ -2979,6 +2982,7 @@ void /* PRIVATE */
 png_read_start_row(png_structp png_ptr)
 {
 #ifdef PNG_USE_LOCAL_ARRAYS
+#ifdef PNG_READ_INTERLACING_SUPPORTED
   /* arrays to facilitate easy interlacing - use pass (0 - 6) as index */

   /* start of interlace block */
@@ -2992,6 +2996,7 @@ png_read_start_row(png_structp png_ptr)

   /* offset to next interlace block in the y direction */
   PNG_CONST int png_pass_yinc[7] = {8, 8, 8, 4, 4, 2, 2};
+#endif
 #endif

   int max_pixel_depth;
@@ -3000,6 +3005,7 @@ png_read_start_row(png_structp png_ptr)
   png_debug(1, "in png_read_start_row\n");
   png_ptr->zstream.avail_in = 0;
   png_init_read_transformations(png_ptr);
+#ifdef PNG_READ_INTERLACING_SUPPORTED
   if (png_ptr->interlaced)
   {
      if (!(png_ptr->transformations & PNG_INTERLACE))
@@ -3020,6 +3026,7 @@ png_read_start_row(png_structp png_ptr)
            png_error(png_ptr, "Rowbytes overflow in png_read_start_row");
   }
   else
+#endif /* PNG_READ_INTERLACING_SUPPORTED */
   {
      png_ptr->num_rows = png_ptr->height;
      png_ptr->iwidth = png_ptr->width;
@@ -3138,8 +3145,14 @@ defined(PNG_USER_TRANSFORM_PTR_SUPPORTED)
   if (row_bytes > (png_uint_32)65536L)
      png_error(png_ptr, "This image requires a row greater than 64KB");
 #endif
-   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(row_bytes + 64 > png_ptr->old_big_row_buf_size)
+   {
+     png_free(png_ptr,png_ptr->big_row_buf);
+     png_ptr->big_row_buf = (png_bytep)png_malloc(png_ptr, row_bytes+64);
+     png_ptr->row_buf = png_ptr->big_row_buf+32;
+     png_ptr->old_big_row_buf_size = row_bytes+64;
+   }

 #ifdef PNG_MAX_MALLOC_64K
   if ((png_uint_32)png_ptr->rowbytes + 1 > (png_uint_32)65536L)
@@ -3147,8 +3160,14 @@ defined(PNG_USER_TRANSFORM_PTR_SUPPORTED)
 #endif
   if ((png_uint_32)png_ptr->rowbytes > (png_uint_32)(PNG_SIZE_MAX - 1))
      png_error(png_ptr, "Row has too many bytes to allocate in memory.");
-   png_ptr->prev_row = (png_bytep)png_malloc(png_ptr, (png_uint_32)(
-      png_ptr->rowbytes + 1));
+
+   if(png_ptr->rowbytes+1 > png_ptr->old_prev_row_size)
+   {
+     png_free(png_ptr,png_ptr->prev_row);
+     png_ptr->prev_row = (png_bytep)png_malloc(png_ptr, (png_uint_32)(
+        png_ptr->rowbytes + 1));
+     png_ptr->old_prev_row_size = png_ptr->rowbytes+1;
+   }

   png_memset_check(png_ptr, png_ptr->prev_row, 0, png_ptr->rowbytes + 1);

--- a/pngset.c
+++ b/pngset.c
@@ -1,7 +1,7 @@

 /* pngset.c - storage of image information into info struct
 *
- * Last changed in libpng 1.2.25 [January 22, 2008]
+ * Last changed in libpng 1.2.27 [April 23, 2008]
 * For conditions of distribution and use, see copyright notice in png.h
 * Copyright (c) 1998-2008 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -914,6 +914,8 @@ png_set_tRNS(png_structp png_ptr, png_infop info_ptr,
   if (png_ptr == NULL || info_ptr == NULL)
      return;

+   png_free_data(png_ptr, info_ptr, PNG_FREE_TRNS, 0);
+
   if (trans != NULL)
   {
       /*
@@ -921,30 +923,41 @@ png_set_tRNS(png_structp png_ptr, png_infop info_ptr,
        * we do it for backward compatibility with the way the png_handle_tRNS
        * function used to do the allocation.
        */
-#ifdef PNG_FREE_ME_SUPPORTED
-       png_free_data(png_ptr, info_ptr, PNG_FREE_TRNS, 0);
-#endif
+
       /* Changed from num_trans to PNG_MAX_PALETTE_LENGTH in version 1.2.1 */
       png_ptr->trans = info_ptr->trans = (png_bytep)png_malloc(png_ptr,
           (png_uint_32)PNG_MAX_PALETTE_LENGTH);
-       if (num_trans <= PNG_MAX_PALETTE_LENGTH)
+       if (num_trans > 0 && num_trans <= PNG_MAX_PALETTE_LENGTH)
         png_memcpy(info_ptr->trans, trans, (png_size_t)num_trans);
-#ifdef PNG_FREE_ME_SUPPORTED
-       info_ptr->free_me |= PNG_FREE_TRNS;
-#else
-       png_ptr->flags |= PNG_FLAG_FREE_TRNS;
-#endif
   }

   if (trans_values != NULL)
   {
+      int sample_max = (1 << info_ptr->bit_depth);
+      if ((info_ptr->color_type == PNG_COLOR_TYPE_GRAY &&
+          (int)trans_values->gray > sample_max) ||
+          (info_ptr->color_type == PNG_COLOR_TYPE_RGB &&
+          ((int)trans_values->red > sample_max ||
+          (int)trans_values->green > sample_max ||
+          (int)trans_values->blue > sample_max)))
+        png_warning(png_ptr,
+           "tRNS chunk has out-of-range samples for bit_depth");
      png_memcpy(&(info_ptr->trans_values), trans_values,
         png_sizeof(png_color_16));
      if (num_trans == 0)
        num_trans = 1;
   }
+
   info_ptr->num_trans = (png_uint_16)num_trans;
-   info_ptr->valid |= PNG_INFO_tRNS;
+   if (num_trans != 0)
+   {
+      info_ptr->valid |= PNG_INFO_tRNS;
+#ifdef PNG_FREE_ME_SUPPORTED
+      info_ptr->free_me |= PNG_FREE_TRNS;
+#else
+      png_ptr->flags |= PNG_FLAG_FREE_TRNS;
+#endif
+   }
 }
 #endif

@@ -1040,28 +1053,31 @@ png_set_unknown_chunks(png_structp png_ptr,

    for (i = 0; i < num_unknowns; i++)
    {
-        png_unknown_chunkp to = np + info_ptr->unknown_chunks_num + i;
-        png_unknown_chunkp from = unknowns + i;
+       png_unknown_chunkp to = np + info_ptr->unknown_chunks_num + i;
+       png_unknown_chunkp from = unknowns + i;

-        png_memcpy((png_charp)to->name, 
-                   (png_charp)from->name, 
-                   png_sizeof(from->name));
-        to->name[png_sizeof(to->name)-1] = '\0';
+       png_memcpy((png_charp)to->name, 
+                  (png_charp)from->name, 
+                  png_sizeof(from->name));
+       to->name[png_sizeof(to->name)-1] = '\0';
+       to->size = from->size;
+       /* note our location in the read or write sequence */
+       to->location = (png_byte)(png_ptr->mode & 0xff);

-        to->data = (png_bytep)png_malloc_warn(png_ptr, from->size);
-        if (to->data == NULL)
-        {
-           png_warning(png_ptr,
+       if (from->size == 0)
+          to->data=NULL;
+       else
+       {
+          to->data = (png_bytep)png_malloc_warn(png_ptr, from->size);
+          if (to->data == NULL)
+          {
+             png_warning(png_ptr,
              "Out of memory while processing unknown chunk.");
-        }
-        else
-        {
-           png_memcpy(to->data, from->data, from->size);
-           to->size = from->size;
-
-           /* note our location in the read or write sequence */
-           to->location = (png_byte)(png_ptr->mode & 0xff);
-        }
+             to->size=0;
+          }
+          else
+             png_memcpy(to->data, from->data, from->size);
+       }
    }

    info_ptr->unknown_chunks = np;
@@ -1193,8 +1209,7 @@ png_set_compression_buffer_size(png_structp png_ptr, png_uint_32 size)
 {
    if (png_ptr == NULL)
       return;
-    if(png_ptr->zbuf)
-       png_free(png_ptr, png_ptr->zbuf);
+    png_free(png_ptr, png_ptr->zbuf);
    png_ptr->zbuf_size = (png_size_t)size;
    png_ptr->zbuf = (png_bytep)png_malloc(png_ptr, size);
    png_ptr->zstream.next_out = png_ptr->zbuf;
--- a/pngtest.c
+++ b/pngtest.c
@@ -1,9 +1,9 @@

 /* pngtest.c - a simple test program to test libpng
 *
- * Last changed in libpng 1.2.23 - [November 6, 2007]
+ * Last changed in libpng 1.2.27 - [April 23, 2008]
 * For conditions of distribution and use, see copyright notice in png.h
- * Copyright (c) 1998-2007 Glenn Randers-Pehrson
+ * Copyright (c) 1998-2008 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 +689,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
 #endif
   {
      fprintf(STDERR, "%s -> %s: libpng read error\n", inname, outname);
-      if (row_buf)
-         png_free(read_ptr, row_buf);
+      png_free(read_ptr, row_buf);
      png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr);
 #ifdef PNG_WRITE_SUPPORTED
      png_destroy_info_struct(write_ptr, &write_end_info_ptr);
@@ -1024,8 +1023,16 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
      if (png_get_tRNS(read_ptr, read_info_ptr, &trans, &num_trans,
         &trans_values))
      {
-         png_set_tRNS(write_ptr, write_info_ptr, trans, num_trans,
-            trans_values);
+         int sample_max = (1 << read_info_ptr->bit_depth);
+         /* libpng doesn't reject a tRNS chunk with out-of-range samples */
+         if (!((read_info_ptr->color_type == PNG_COLOR_TYPE_GRAY &&
+            (int)trans_values->gray > sample_max) ||
+            (read_info_ptr->color_type == PNG_COLOR_TYPE_RGB &&
+            ((int)trans_values->red > sample_max ||
+            (int)trans_values->green > sample_max ||
+            (int)trans_values->blue > sample_max))))
+           png_set_tRNS(write_ptr, write_info_ptr, trans, num_trans,
+              trans_values);
      }
   }
 #endif
@@ -1553,4 +1560,4 @@ main(int argc, char *argv[])
 }

 /* Generate a compiler error if there is an old png.h in the search path. */
-typedef version_1_2_25beta03 your_png_h_is_not_version_1_2_25beta03;
+typedef version_1_2_27rc01 your_png_h_is_not_version_1_2_27rc01;
--- a/pngwrite.c
+++ b/pngwrite.c
@@ -1,9 +1,9 @@

 /* pngwrite.c - general routines to write a PNG file
 *
- * Last changed in libpng 1.2.24 [December 14, 2007]
+ * Last changed in libpng 1.2.27 [April 23, 2008]
 * For conditions of distribution and use, see copyright notice in png.h
- * Copyright (c) 1998-2007 Glenn Randers-Pehrson
+ * Copyright (c) 1998-2008 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.)
 */
@@ -112,6 +112,8 @@ png_write_info_before_PLTE(png_structp png_ptr, png_infop info_ptr)
            ((up->name[3] & 0x20) || keep == PNG_HANDLE_CHUNK_ALWAYS ||
            (png_ptr->flags & PNG_FLAG_KEEP_UNSAFE_CHUNKS)))
         {
+            if (up->size == 0)
+               png_warning(png_ptr, "Writing zero-length unknown chunk");
            png_write_chunk(png_ptr, up->name, up->data, up->size);
         }
       }
@@ -482,12 +484,15 @@ png_create_write_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
 #endif /* PNG_USER_MEM_SUPPORTED */
   png_set_error_fn(png_ptr, error_ptr, error_fn, warn_fn);

-   i=0;
-   do
+   if(user_png_ver)
   {
-     if(user_png_ver[i] != png_libpng_ver[i])
-        png_ptr->flags |= PNG_FLAG_LIBRARY_MISMATCH;
-   } while (png_libpng_ver[i++]);
+     i=0;
+     do
+     {
+       if(user_png_ver[i] != png_libpng_ver[i])
+          png_ptr->flags |= PNG_FLAG_LIBRARY_MISMATCH;
+     } while (png_libpng_ver[i++]);
+   }

   if (png_ptr->flags & PNG_FLAG_LIBRARY_MISMATCH)
   {
@@ -1000,21 +1005,32 @@ png_destroy_write_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr)
 #endif
   }

+#ifdef PNG_USER_MEM_SUPPORTED
+   if (png_ptr != NULL)
+   {
+      free_fn = png_ptr->free_fn;
+      mem_ptr = png_ptr->mem_ptr;
+   }
+#endif
+
   if (info_ptr_ptr != NULL)
      info_ptr = *info_ptr_ptr;

   if (info_ptr != NULL)
   {
-      png_free_data(png_ptr, info_ptr, PNG_FREE_ALL, -1);
+      if (png_ptr != NULL)
+      {
+        png_free_data(png_ptr, info_ptr, PNG_FREE_ALL, -1);

 #if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
-      if (png_ptr->num_chunk_list)
-      {
-         png_free(png_ptr, png_ptr->chunk_list);
-         png_ptr->chunk_list=NULL;
-         png_ptr->num_chunk_list=0;
-      }
+        if (png_ptr->num_chunk_list)
+        {
+           png_free(png_ptr, png_ptr->chunk_list);
+           png_ptr->chunk_list=NULL;
+           png_ptr->num_chunk_list=0;
+        }
 #endif
+      }

 #ifdef PNG_USER_MEM_SUPPORTED
      png_destroy_struct_2((png_voidp)info_ptr, (png_free_ptr)free_fn,
--- a/pngwutil.c
+++ b/pngwutil.c
@@ -1,9 +1,9 @@

 /* pngwutil.c - utilities to write a PNG file
 *
- * Last changed in libpng 1.2.20 Septhember 3, 2007
+ * Last changed in libpng 1.2.27 [April 23, 2008]
 * For conditions of distribution and use, see copyright notice in png.h
- * Copyright (c) 1998-2007 Glenn Randers-Pehrson
+ * Copyright (c) 1998-2008 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.)
 */
@@ -380,6 +380,8 @@ png_write_IHDR(png_structp png_ptr, png_uint_32 width, png_uint_32 height,
 #ifdef PNG_USE_LOCAL_ARRAYS
   PNG_IHDR;
 #endif
+   int ret;
+
   png_byte buf[13]; /* buffer to store the IHDR info */

   png_debug(1, "in png_write_IHDR\n");
@@ -523,10 +525,19 @@ png_write_IHDR(png_structp png_ptr, png_uint_32 width, png_uint_32 height,
      png_ptr->zlib_window_bits = 15;
   if (!(png_ptr->flags & PNG_FLAG_ZLIB_CUSTOM_METHOD))
      png_ptr->zlib_method = 8;
-   if (deflateInit2(&png_ptr->zstream, png_ptr->zlib_level,
-      png_ptr->zlib_method, png_ptr->zlib_window_bits,
-      png_ptr->zlib_mem_level, png_ptr->zlib_strategy) != Z_OK)
-       png_error(png_ptr, "zlib failed to initialize compressor");
+   ret = deflateInit2(&png_ptr->zstream, png_ptr->zlib_level,
+         png_ptr->zlib_method, png_ptr->zlib_window_bits,
+         png_ptr->zlib_mem_level, png_ptr->zlib_strategy);
+   if (ret != Z_OK)
+   {
+      if (ret == Z_VERSION_ERROR) png_error(png_ptr,
+          "zlib failed to initialize compressor -- version error");
+      if (ret == Z_STREAM_ERROR) png_error(png_ptr,
+           "zlib failed to initialize compressor -- stream error");
+      if (ret == Z_MEM_ERROR) png_error(png_ptr,
+           "zlib failed to initialize compressor -- mem error");
+      png_error(png_ptr, "zlib failed to initialize compressor");
+   }
   png_ptr->zstream.next_out = png_ptr->zbuf;
   png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size;
   /* libpng is not interested in zstream.data_type */
@@ -1505,8 +1516,7 @@ png_write_iTXt(png_structp png_ptr, int compression, png_charp key,

   png_write_chunk_end(png_ptr);
   png_free(png_ptr, new_key);
-   if (new_lang)
-     png_free(png_ptr, new_lang);
+   png_free(png_ptr, new_lang);
 }
 #endif

--- a/scripts/CMakeLists.txt
+++ b/scripts/CMakeLists.txt
@@ -6,7 +6,7 @@ project(PNG)

 set(PNGLIB_MAJOR 1)
 set(PNGLIB_MINOR 2)
-set(PNGLIB_RELEASE 25)
+set(PNGLIB_RELEASE 27)
 set(PNGLIB_NAME libpng${PNGLIB_MAJOR}${PNGLIB_MINOR})
 set(PNGLIB_VERSION ${PNGLIB_MAJOR}.${PNGLIB_MINOR}.${PNGLIB_RELEASE})

@@ -169,7 +169,7 @@ configure_file(${PNG_SOURCE_DIR}/scripts/libpng-config.in

 # SET UP LINKS
 set_target_properties(${PNG_LIB_NAME} PROPERTIES
-#    VERSION 0.${PNGLIB_RELEASE}.1.2.25beta03
+#    VERSION 0.${PNGLIB_RELEASE}.1.2.27rc01
     VERSION 0.${PNGLIB_RELEASE}.0
     SOVERSION 0
     CLEAN_DIRECT_OUTPUT 1)
--- a/scripts/libpng-config-head.in
+++ b/scripts/libpng-config-head.in
@@ -8,7 +8,7 @@

 # Modeled after libxml-config.

-version=1.2.25beta03
+version=1.2.27rc01
 prefix=""
 libdir=""
 libs=""
--- a/scripts/libpng.pc-configure.in
+++ b/scripts/libpng.pc-configure.in
@@ -5,6 +5,6 @@ includedir=@includedir@/libpng12

 Name: libpng
 Description: Loads and saves PNG files
-Version: 1.2.25beta03
+Version: 1.2.27rc01
 Libs: -L${libdir} -lpng12
 Cflags: -I${includedir} @LIBPNG_NO_MMX@
--- a/scripts/libpng.pc.in
+++ b/scripts/libpng.pc.in
@@ -5,6 +5,6 @@ includedir=@includedir@/libpng12

 Name: libpng
 Description: Loads and saves PNG files
-Version: 1.2.25beta03
+Version: 1.2.27rc01
 Libs: -L${libdir} -lpng12
 Cflags: -I${includedir}
--- a/scripts/makefile.32sunu
+++ b/scripts/makefile.32sunu
@@ -8,7 +8,7 @@
 # Library name:
 LIBNAME=libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.25beta03
+PNGMIN = 1.2.27rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)

 # Shared library names:
--- a/scripts/makefile.64sunu
+++ b/scripts/makefile.64sunu
@@ -8,7 +8,7 @@
 # Library name:
 LIBNAME=libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.25beta03
+PNGMIN = 1.2.27rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)

 # Shared library names:
--- a/scripts/makefile.aix
+++ b/scripts/makefile.aix
@@ -20,7 +20,7 @@ LN_SF = ln -f -s

 LIBNAME=libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.25beta03
+PNGMIN = 1.2.27rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)

 prefix=/usr/local
--- a/scripts/makefile.beos
+++ b/scripts/makefile.beos
@@ -8,7 +8,7 @@
 # Library name:
 LIBNAME=libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.25beta03
+PNGMIN = 1.2.27rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)

 # Shared library names:
--- a/scripts/makefile.cygwin
+++ b/scripts/makefile.cygwin
@@ -74,7 +74,7 @@ CFLAGS= $(strip $(MINGW_CCFLAGS) $(addprefix -I,$(ZLIBINC)) \
 LIBNAME = libpng12
 PNGMAJ = 0
 CYGDLL = 12
-PNGMIN = 1.2.25beta03
+PNGMIN = 1.2.27rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)

 SHAREDLIB=cygpng$(CYGDLL).dll
--- a/scripts/makefile.darwin
+++ b/scripts/makefile.darwin
@@ -19,7 +19,7 @@ ZLIBINC=../zlib
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.25beta03
+PNGMIN = 1.2.27rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)

 # Shared library names:
--- a/scripts/makefile.dec
+++ b/scripts/makefile.dec
@@ -5,7 +5,7 @@

 # Library name:
 PNGMAJ = 0
-PNGMIN = 1.2.25beta03
+PNGMIN = 1.2.27rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)
 LIBNAME = libpng12

--- a/scripts/makefile.elf
+++ b/scripts/makefile.elf
@@ -12,7 +12,7 @@
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.25beta03
+PNGMIN = 1.2.27rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)

 # Shared library names:
--- a/scripts/makefile.gcmmx
+++ b/scripts/makefile.gcmmx
@@ -14,7 +14,7 @@
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.25beta03
+PNGMIN = 1.2.27rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)

 # Shared library names:
--- a/scripts/makefile.hp64
+++ b/scripts/makefile.hp64
@@ -18,7 +18,7 @@ ZLIBINC=/opt/zlib/include
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.25beta03
+PNGMIN = 1.2.27rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)

 # Shared library names:
--- a/scripts/makefile.hpgcc
+++ b/scripts/makefile.hpgcc
@@ -8,7 +8,7 @@
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.25beta03
+PNGMIN = 1.2.27rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)

 # Shared library names:
--- a/scripts/makefile.hpux
+++ b/scripts/makefile.hpux
@@ -18,7 +18,7 @@ ZLIBINC=/opt/zlib/include
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.25beta03
+PNGMIN = 1.2.27rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)

 # Shared library names:
--- a/scripts/makefile.linux
+++ b/scripts/makefile.linux
@@ -6,7 +6,7 @@
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.25beta03
+PNGMIN = 1.2.27rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)

 # Shared library names:
--- a/scripts/makefile.mingw
+++ b/scripts/makefile.mingw
@@ -74,7 +74,7 @@ CFLAGS= $(strip $(MINGW_CCFLAGS) $(addprefix -I,$(ZLIBINC)) \
 LIBNAME = libpng12
 PNGMAJ = 0
 MINGDLL = 12
-PNGMIN = 1.2.25beta03
+PNGMIN = 1.2.27rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)

 SHAREDLIB=libpng$(MINGDLL).dll
--- a/scripts/makefile.ne12bsd
+++ b/scripts/makefile.ne12bsd
@@ -14,7 +14,7 @@ INCSDIR=${LOCALBASE}/include/libpng12

 LIB=	png12
 SHLIB_MAJOR=	0
-SHLIB_MINOR=	1.2.25beta03
+SHLIB_MINOR=	1.2.27rc01
 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
--- a/scripts/makefile.netbsd
+++ b/scripts/makefile.netbsd
@@ -14,7 +14,7 @@ INCSDIR=${LOCALBASE}/include/libpng

 LIB=	png
 SHLIB_MAJOR=	3
-SHLIB_MINOR=	1.2.25beta03
+SHLIB_MINOR=	1.2.27rc01
 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
--- a/scripts/makefile.nommx
+++ b/scripts/makefile.nommx
@@ -7,7 +7,7 @@
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.25beta03
+PNGMIN = 1.2.27rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)

 # Shared library names:
--- a/scripts/makefile.openbsd
+++ b/scripts/makefile.openbsd
@@ -8,7 +8,7 @@ LIBDIR=	${PREFIX}/lib
 MANDIR= ${PREFIX}/man/cat

 SHLIB_MAJOR=	0
-SHLIB_MINOR=	1.2.25beta03
+SHLIB_MINOR=	1.2.27rc01

 LIB=	png
 SRCS=	png.c pngerror.c pngget.c pngmem.c pngpread.c \
--- a/scripts/makefile.sco
+++ b/scripts/makefile.sco
@@ -9,7 +9,7 @@
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.25beta03
+PNGMIN = 1.2.27rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)

 # Shared library names:
--- a/scripts/makefile.sggcc
+++ b/scripts/makefile.sggcc
@@ -6,7 +6,7 @@
 # Library name:
 LIBNAME=libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.25beta03
+PNGMIN = 1.2.27rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)

 # Shared library names:
--- a/scripts/makefile.sgi
+++ b/scripts/makefile.sgi
@@ -6,7 +6,7 @@
 # Library name:
 LIBNAME=libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.25beta03
+PNGMIN = 1.2.27rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)

 # Shared library names:
--- a/scripts/makefile.so9
+++ b/scripts/makefile.so9
@@ -8,7 +8,7 @@

 # Library name:
 PNGMAJ = 0
-PNGMIN = 1.2.25beta03
+PNGMIN = 1.2.27rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)
 LIBNAME = libpng12

--- a/scripts/makefile.solaris
+++ b/scripts/makefile.solaris
@@ -8,7 +8,7 @@
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.25beta03
+PNGMIN = 1.2.27rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)

 # Shared library names:
--- a/scripts/makefile.solaris-x86
+++ b/scripts/makefile.solaris-x86
@@ -8,7 +8,7 @@
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.25beta03
+PNGMIN = 1.2.27rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)

 # Shared library names:
--- a/scripts/pngos2.def
+++ b/scripts/pngos2.def
@@ -2,7 +2,7 @@
 ; PNG.LIB module definition file for OS/2
 ;----------------------------------------

-; Version 1.2.25beta03
+; Version 1.2.27rc01

 LIBRARY		PNG
 DESCRIPTION	"PNG image compression library for OS/2"
--- a/scripts/pngw32.def
+++ b/scripts/pngw32.def
@@ -5,7 +5,7 @@
 LIBRARY

 EXPORTS
-;Version 1.2.25beta03
+;Version 1.2.27rc01
  png_build_grayscale_palette  @1
  png_check_sig        @2
  png_chunk_error      @3
Author	SHA1	Message	Date
Glenn Randers-Pehrson	fc70a92071	Imported from libpng-1.2.27rc01.tar	2009-04-06 16:16:46 -05:00
Glenn Randers-Pehrson	ccaaab2898	Imported from libpng-1.2.27beta06.tar	2009-04-06 16:16:43 -05:00
Glenn Randers-Pehrson	8d36e630f2	Imported from libpng-1.2.27beta05.tar	2009-04-06 16:16:41 -05:00
Glenn Randers-Pehrson	eb1f347bca	Imported from libpng-1.2.27beta04.tar	2009-04-06 16:16:38 -05:00
Glenn Randers-Pehrson	7db798186c	Imported from libpng-1.2.27beta03.tar	2009-04-06 16:16:36 -05:00
Glenn Randers-Pehrson	a1cd94bfbb	Imported from libpng-1.2.27beta02.tar	2009-04-06 16:16:34 -05:00
Glenn Randers-Pehrson	d9d2a6f6d9	Imported from libpng-1.2.27beta01.tar	2009-04-06 16:16:31 -05:00
Glenn Randers-Pehrson	b8c4b82d18	Imported from libpng-1.2.26.tar	2009-04-06 16:16:29 -05:00
Glenn Randers-Pehrson	b8f615d7a1	Imported from libpng-1.2.26rc01.tar	2009-04-06 16:16:27 -05:00
Glenn Randers-Pehrson	35d97eb5c5	Imported from libpng-1.2.26beta06.tar	2009-04-06 16:16:24 -05:00
Glenn Randers-Pehrson	fc15b2e479	Imported from libpng-1.2.26beta05.tar	2009-04-06 16:16:22 -05:00
Glenn Randers-Pehrson	936df0d290	Imported from libpng-1.2.26beta04.tar	2009-04-06 16:16:20 -05:00
Glenn Randers-Pehrson	3236beddf8	Imported from libpng-1.2.26beta03.tar	2009-04-06 16:16:18 -05:00
Glenn Randers-Pehrson	c13f8f10e6	Imported from libpng-1.2.26beta02.tar	2009-04-06 16:16:15 -05:00
Glenn Randers-Pehrson	d8b530b93c	Imported from libpng-1.2.26beta01.tar	2009-04-06 16:16:13 -05:00
Glenn Randers-Pehrson	2296f211e8	Imported from libpng-1.2.25.tar	2009-04-06 16:16:10 -05:00
Glenn Randers-Pehrson	a5136b8863	Imported from libpng-1.2.25rc02.tar	2009-04-06 16:16:08 -05:00
Glenn Randers-Pehrson	913bc38217	Imported from libpng-1.2.25beta06.tar	2009-04-06 16:16:05 -05:00
Glenn Randers-Pehrson	4b7dca3d2c	Imported from libpng-1.2.25beta05.tar	2009-04-06 16:16:03 -05:00
Glenn Randers-Pehrson	5c58e3ee31	Imported from libpng-1.2.25beta04.tar	2009-04-06 16:16:00 -05:00