[libpng15] Added palette-index checking.
diff --git a/ANNOUNCE b/ANNOUNCE
index f6cbe9c..1b08b26 100644
--- a/ANNOUNCE
+++ b/ANNOUNCE
@@ -1,5 +1,5 @@
-Libpng 1.5.10beta03 - February 27, 2012
+Libpng 1.5.10beta03 - March 5, 2012
This is not intended to be a public release. It will be replaced
within a few weeks by a public version or by another test version.
@@ -45,9 +45,10 @@
Version 1.5.10beta02 [February 27, 2012]
Updated Makefile.in
-Version 1.5.10beta03 [February 27, 2012]
+Version 1.5.10beta03 [March 5, 2012]
Removed unused "current_text" members of png_struct and the png_free()
of png_ptr->current_text from pngread.c
+ Added palette-index checking.
Send comments/corrections/commendations to png-mng-implement at lists.sf.net:
(subscription required; visit
diff --git a/CHANGES b/CHANGES
index 65e72c6..280c467 100644
--- a/CHANGES
+++ b/CHANGES
@@ -3830,9 +3830,10 @@
Version 1.5.10beta02 [February 27, 2012]
Updated Makefile.in
-Version 1.5.10beta03 [February 27, 2012]
+Version 1.5.10beta03 [March 5, 2012]
Removed unused "current_text" members of png_struct and the png_free()
of png_ptr->current_text from pngread.c
+ Added palette-index checking.
Send comments/corrections/commendations to png-mng-implement at lists.sf.net
(subscription required; visit
diff --git a/libpng-manual.txt b/libpng-manual.txt
index 4d38058..b6942f4 100644
--- a/libpng-manual.txt
+++ b/libpng-manual.txt
@@ -1,6 +1,6 @@
libpng-manual.txt - A description on how to use and modify libpng
- libpng version 1.5.10beta03 - February 27, 2012
+ libpng version 1.5.10beta03 - March 5, 2012
Updated and distributed by Glenn Randers-Pehrson
<glennrp at users.sourceforge.net>
Copyright (c) 1998-2011 Glenn Randers-Pehrson
@@ -11,7 +11,7 @@
Based on:
- libpng versions 0.97, January 1998, through 1.5.10beta03 - February 27, 2012
+ libpng versions 0.97, January 1998, through 1.5.10beta03 - March 5, 2012
Updated and distributed by Glenn Randers-Pehrson
Copyright (c) 1998-2011 Glenn Randers-Pehrson
@@ -4142,6 +4142,15 @@
From libpng-1.4.0 until 1.4.4, the png_get_uint_16 macro (but not the
function) incorrectly returned a value of type png_uint_32.
+Checking for invalid palette index on read or write was added at libpng
+1.5.10. This is enabled by default but can be disabled in each png_ptr with
+
+ png_set_check_for_invalid_index(png_ptr, allowed);
+
+ allowed - one of
+ 0: disable
+ 1: enable
+
A. Changes that affect users of libpng
There are no substantial API changes between the non-deprecated parts of
@@ -4587,7 +4596,7 @@
XIV. Y2K Compliance in libpng
-February 27, 2012
+March 5, 2012
Since the PNG Development group is an ad-hoc body, we can't make
an official declaration.
diff --git a/libpng.3 b/libpng.3
index 8da0636..eae019d 100644
--- a/libpng.3
+++ b/libpng.3
@@ -1,4 +1,4 @@
-.TH LIBPNG 3 "February 27, 2012"
+.TH LIBPNG 3 "March 5, 2012"
.SH NAME
libpng \- Portable Network Graphics (PNG) Reference Library 1.5.10beta03
.SH SYNOPSIS
@@ -552,6 +552,10 @@
\fI\fB
+\fBvoid png_set_check_for_invalid_index(png_structrp \fP\fIpng_ptr\fP\fB, int \fIallowed\fP\fB);\fP
+
+\fI\fB
+
\fBvoid png_set_cHRM (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, double \fP\fIwhite_x\fP\fB, double \fP\fIwhite_y\fP\fB, double \fP\fIred_x\fP\fB, double \fP\fIred_y\fP\fB, double \fP\fIgreen_x\fP\fB, double \fP\fIgreen_y\fP\fB, double \fP\fIblue_x\fP\fB, double \fIblue_y\fP\fB);\fP
\fI\fB
@@ -977,7 +981,7 @@
.SH LIBPNG.TXT
libpng-manual.txt - A description on how to use and modify libpng
- libpng version 1.5.10beta03 - February 27, 2012
+ libpng version 1.5.10beta03 - March 5, 2012
Updated and distributed by Glenn Randers-Pehrson
<glennrp at users.sourceforge.net>
Copyright (c) 1998-2011 Glenn Randers-Pehrson
@@ -988,7 +992,7 @@
Based on:
- libpng versions 0.97, January 1998, through 1.5.10beta03 - February 27, 2012
+ libpng versions 0.97, January 1998, through 1.5.10beta03 - March 5, 2012
Updated and distributed by Glenn Randers-Pehrson
Copyright (c) 1998-2011 Glenn Randers-Pehrson
@@ -5120,6 +5124,15 @@
From libpng-1.4.0 until 1.4.4, the png_get_uint_16 macro (but not the
function) incorrectly returned a value of type png_uint_32.
+Checking for invalid palette index on read or write was added at libpng
+1.5.10. This is enabled by default but can be disabled in each png_ptr with
+
+ png_set_check_for_invalid_index(png_ptr, allowed);
+
+ allowed - one of
+ 0: disable
+ 1: enable
+
A. Changes that affect users of libpng
There are no substantial API changes between the non-deprecated parts of
@@ -5565,7 +5578,7 @@
.SH XIV. Y2K Compliance in libpng
-February 27, 2012
+March 5, 2012
Since the PNG Development group is an ad-hoc body, we can't make
an official declaration.
@@ -5839,7 +5852,7 @@
Thanks to Frank J. T. Wojcik for helping with the documentation.
-Libpng version 1.5.10beta03 - February 27, 2012:
+Libpng version 1.5.10beta03 - March 5, 2012:
Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
Currently maintained by Glenn Randers-Pehrson (glennrp at users.sourceforge.net).
@@ -5862,7 +5875,7 @@
This code is released under the libpng license.
-libpng versions 1.2.6, August 15, 2004, through 1.5.10beta03, February 27, 2012, are
+libpng versions 1.2.6, August 15, 2004, through 1.5.10beta03, March 5, 2012, are
Copyright (c) 2004,2006-2007 Glenn Randers-Pehrson, and are
distributed according to the same disclaimer and license as libpng-1.2.5
with the following individual added to the list of Contributing Authors
@@ -5961,7 +5974,7 @@
Glenn Randers-Pehrson
glennrp at users.sourceforge.net
-February 27, 2012
+March 5, 2012
.\" end of man page
diff --git a/png.c b/png.c
index 7533e3e..87573e6 100644
--- a/png.c
+++ b/png.c
@@ -1,8 +1,8 @@
/* png.c - location for general purpose libpng functions
*
- * Last changed in libpng 1.5.7 [December 15, 2011]
- * Copyright (c) 1998-2011 Glenn Randers-Pehrson
+ * Last changed in libpng 1.5.10 [(PENDING RELEASE)]
+ * Copyright (c) 1998-2012 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
*
@@ -655,13 +655,13 @@
#else
# ifdef __STDC__
return PNG_STRING_NEWLINE \
- "libpng version 1.5.10beta03 - February 27, 2012" PNG_STRING_NEWLINE \
+ "libpng version 1.5.10beta03 - March 5, 2012" PNG_STRING_NEWLINE \
"Copyright (c) 1998-2011 Glenn Randers-Pehrson" PNG_STRING_NEWLINE \
"Copyright (c) 1996-1997 Andreas Dilger" PNG_STRING_NEWLINE \
"Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc." \
PNG_STRING_NEWLINE;
# else
- return "libpng version 1.5.10beta03 - February 27, 2012\
+ return "libpng version 1.5.10beta03 - March 5, 2012\
Copyright (c) 1998-2011 Glenn Randers-Pehrson\
Copyright (c) 1996-1997 Andreas Dilger\
Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.";
@@ -1467,7 +1467,7 @@
png_pow10(int power)
{
int recip = 0;
- double d = 1;
+ double d = 1.0;
/* Handle negative exponent with a reciprocal at the end because
* 10 is exact whereas .1 is inexact in base 2
@@ -1481,7 +1481,7 @@
if (power > 0)
{
/* Decompose power bitwise. */
- double mult = 10;
+ double mult = 10.0;
do
{
if (power & 1) d *= mult;
@@ -1600,7 +1600,8 @@
{
double d;
- fp *= 10;
+ fp *= 10.0;
+
/* Use modf here, not floor and subtract, so that
* the separation is done in one step. At the end
* of the loop don't break the number into parts so
@@ -1613,7 +1614,7 @@
{
d = floor(fp + .5);
- if (d > 9)
+ if (d > 9.0)
{
/* Rounding up to 10, handle that here. */
if (czero > 0)
@@ -1621,9 +1622,10 @@
--czero, d = 1;
if (cdigits == 0) --clead;
}
+
else
{
- while (cdigits > 0 && d > 9)
+ while (cdigits > 0 && d > 9.0)
{
int ch = *--ascii;
@@ -1648,7 +1650,7 @@
* exponent but take into account the leading
* decimal point.
*/
- if (d > 9) /* cdigits == 0 */
+ if (d > 9.0) /* cdigits == 0 */
{
if (exp_b10 == (-1))
{
@@ -1669,18 +1671,19 @@
++exp_b10;
/* In all cases we output a '1' */
- d = 1;
+ d = 1.0;
}
}
}
fp = 0; /* Guarantees termination below. */
}
- if (d == 0)
+ if (d == 0.0)
{
++czero;
if (cdigits == 0) ++clead;
}
+
else
{
/* Included embedded zeros in the digit count. */
@@ -1708,6 +1711,7 @@
above */
--exp_b10;
}
+
*ascii++ = (char)(48 + (int)d), ++cdigits;
}
}
diff --git a/png.h b/png.h
index 0317225..42ec271 100644
--- a/png.h
+++ b/png.h
@@ -1,7 +1,7 @@
/* png.h - header file for PNG reference library
*
- * libpng version 1.5.10beta03 - February 27, 2012
+ * libpng version 1.5.10beta03 - March 5, 2012
* Copyright (c) 1998-2012 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -11,7 +11,7 @@
* Authors and maintainers:
* libpng versions 0.71, May 1995, through 0.88, January 1996: Guy Schalnat
* libpng versions 0.89c, June 1996, through 0.96, May 1997: Andreas Dilger
- * libpng versions 0.97, January 1998, through 1.5.10beta03 - February 27, 2012: Glenn
+ * libpng versions 0.97, January 1998, through 1.5.10beta03 - March 5, 2012: Glenn
* See also "Contributing Authors", below.
*
* Note about libpng version numbers:
@@ -204,7 +204,7 @@
*
* This code is released under the libpng license.
*
- * libpng versions 1.2.6, August 15, 2004, through 1.5.10beta03, February 27, 2012, are
+ * libpng versions 1.2.6, August 15, 2004, through 1.5.10beta03, March 5, 2012, are
* Copyright (c) 2004, 2006-2012 Glenn Randers-Pehrson, and are
* distributed according to the same disclaimer and license as libpng-1.2.5
* with the following individual added to the list of Contributing Authors:
@@ -316,7 +316,7 @@
* Y2K compliance in libpng:
* =========================
*
- * February 27, 2012
+ * March 5, 2012
*
* Since the PNG Development group is an ad-hoc body, we can't make
* an official declaration.
@@ -382,7 +382,7 @@
/* Version information for png.h - this should match the version in png.c */
#define PNG_LIBPNG_VER_STRING "1.5.10beta03"
#define PNG_HEADER_VERSION_STRING \
- " libpng version 1.5.10beta03 - February 27, 2012\n"
+ " libpng version 1.5.10beta03 - March 5, 2012\n"
#define PNG_LIBPNG_VER_SONUM 15
#define PNG_LIBPNG_VER_DLLNUM 15
@@ -2638,6 +2638,12 @@
: (png_int_32)png_get_uint_32(buf)))
#endif
+#if defined(PNG_READ_CHECK_FOR_INVALID_INDEX_SUPPORTED) || \
+ defined(PNG_WRITE_CHECK_FOR_INVALID_INDEX_SUPPORTED)
+PNG_EXPORT(234, void, png_set_check_for_invalid_index, (png_structp png_ptr,
+ int allowed));
+#endif
+
/* Maintainer: Put new public prototypes here ^, in libpng.3, and project
* defs
*/
@@ -2647,7 +2653,7 @@
* scripts/symbols.def as well.
*/
#ifdef PNG_EXPORT_LAST_ORDINAL
- PNG_EXPORT_LAST_ORDINAL(233);
+ PNG_EXPORT_LAST_ORDINAL(234);
#endif
#ifdef __cplusplus
diff --git a/pngpriv.h b/pngpriv.h
index 52484f0..42ec4c2 100644
--- a/pngpriv.h
+++ b/pngpriv.h
@@ -2,11 +2,11 @@
/* pngpriv.h - private declarations for use inside libpng
*
* For conditions of distribution and use, see copyright notice in png.h
- * Copyright (c) 1998-2011 Glenn Randers-Pehrson
+ * Copyright (c) 1998-2012 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
*
- * Last changed in libpng 1.5.7 [December 15, 2011]
+ * Last changed in libpng 1.5.10 [(PENDING RELEASE)]
*
* This code is released under the libpng license.
* For conditions of distribution and use, see the disclaimer
@@ -1395,6 +1395,13 @@
int color_type, int interlace_type, int compression_type,
int filter_type));
+/* Added at libpng version 1.5.10 */
+#if defined(PNG_READ_CHECK_FOR_INVALID_INDEX_SUPPORTED) || \
+ defined(PNG_WRITE_CHECK_FOR_INVALID_INDEX_SUPPORTED)
+PNG_EXTERN void png_do_check_palette_indexes PNGARG((png_structp png_ptr,
+ png_row_infop row_info));
+#endif
+
/* Free all memory used by the read (old method - NOT DLL EXPORTED) */
PNG_EXTERN void png_read_destroy PNGARG((png_structp png_ptr,
png_infop info_ptr, png_infop end_info_ptr));
diff --git a/pngread.c b/pngread.c
index d508864..6f949f6 100644
--- a/pngread.c
+++ b/pngread.c
@@ -801,6 +801,13 @@
png_crc_finish(png_ptr, 0); /* Finish off CRC from last IDAT chunk */
+#ifdef PNG_READ_CHECK_FOR_INVALID_INDEX_SUPPORTED
+ /* Report invalid palette index; added at libng-1.5.10 */
+ if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE &&
+ png_ptr->num_palette_max > png_ptr->num_palette)
+ png_warning(png_ptr, "Read palette index exceeding num_palette");
+#endif
+
do
{
png_uint_32 length = png_read_chunk_header(png_ptr);
diff --git a/pngrtran.c b/pngrtran.c
index 1079595..6102987 100644
--- a/pngrtran.c
+++ b/pngrtran.c
@@ -1,8 +1,8 @@
/* pngrtran.c - transforms the data in a row for PNG readers
*
- * Last changed in libpng 1.5.7 [December 15, 2011]
- * Copyright (c) 1998-2011 Glenn Randers-Pehrson
+ * Last changed in libpng 1.5.10 [(PENDING RELEASE)]
+ * Copyright (c) 1998-2012 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
*
@@ -2296,6 +2296,12 @@
png_do_unpack(row_info, png_ptr->row_buf + 1);
#endif
+#ifdef PNG_READ_CHECK_FOR_INVALID_INDEX_SUPPORTED
+ /* Added at libpng-1.5.10 */
+ if (row_info->color_type == PNG_COLOR_TYPE_PALETTE)
+ png_do_check_palette_indexes(png_ptr, row_info);
+#endif
+
#ifdef PNG_READ_BGR_SUPPORTED
if (png_ptr->transformations & PNG_BGR)
png_do_bgr(row_info, png_ptr->row_buf + 1);
diff --git a/pngset.c b/pngset.c
index 92db389..6aec778 100644
--- a/pngset.c
+++ b/pngset.c
@@ -1,8 +1,8 @@
/* pngset.c - storage of image information into info struct
*
- * Last changed in libpng 1.5.7 [December 15, 2011]
- * Copyright (c) 1998-2011 Glenn Randers-Pehrson
+ * Last changed in libpng 1.5.10 [(PENDING RELEASE)]
+ * Copyright (c) 1998-2012 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
*
@@ -1281,4 +1281,20 @@
png_ptr->flags &= ~PNG_FLAG_BENIGN_ERRORS_WARN;
}
#endif /* PNG_BENIGN_ERRORS_SUPPORTED */
+
+#ifdef PNG_READ_CHECK_FOR_INVALID_INDEX_SUPPORTED
+ /* Do not report invalid palette index; added at libng-1.5.10 */
+void PNGAPI
+png_set_check_for_invalid_index(png_structp png_ptr, int allowed)
+{
+ png_debug(1, "in png_set_check_for_invalid_index");
+
+ if (allowed)
+ png_ptr->num_palette_max = 0;
+
+ else
+ png_ptr->num_palette_max = -1;
+}
+#endif
+
#endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */
diff --git a/pngtrans.c b/pngtrans.c
index 6a6908d..9ea952c 100644
--- a/pngtrans.c
+++ b/pngtrans.c
@@ -1,8 +1,8 @@
/* pngtrans.c - transforms the data in a row (used by both readers and writers)
*
- * Last changed in libpng 1.5.4 [July 7, 2011]
- * Copyright (c) 1998-2011 Glenn Randers-Pehrson
+ * Last changed in libpng 1.5.10 [(PENDING RELEASE)]
+ * Copyright (c) 1998-2012 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
*
@@ -619,6 +619,109 @@
}
#endif /* PNG_READ_BGR_SUPPORTED or PNG_WRITE_BGR_SUPPORTED */
+#if defined(PNG_READ_CHECK_FOR_INVALID_INDEX_SUPPORTED) || \
+ defined(PNG_WRITE_CHECK_FOR_INVALID_INDEX_SUPPORTED)
+/* Added at libpng-1.5.10 */
+void /* PRIVATE */
+png_do_check_palette_indexes(png_structp png_ptr, png_row_infop row_info)
+{
+ if (png_ptr->num_palette < (1 << row_info->bit_depth) &&
+ png_ptr->num_palette_max >= 0)
+ {
+ /* Calculations moved outside switch in an attempt to stop different
+ * compiler warnings. 'padding' is in *bits* within the last byte, it is
+ * an 'int' because pixel_depth becomes an 'int' in the expression below,
+ * and this calculation is used because it avoids warnings that other
+ * forms produced on either GCC or MSVC.
+ */
+ int padding = (-row_info->pixel_depth * row_info->width) & 7;
+ png_bytep rp = png_ptr->row_buf + 1 + row_info->rowbytes;
+
+ switch (row_info->bit_depth)
+ {
+ case 1:
+ {
+ /* in this case, all bytes must be 0 so we don't need
+ * to unpack the pixels except for the rightmost one.
+ */
+ for (; rp > png_ptr->row_buf; rp--)
+ {
+ if (*rp >> padding != 0)
+ png_ptr->num_palette_max = 1;
+ padding = 0;
+ }
+
+ break;
+ }
+
+ case 2:
+ {
+ for (; rp > png_ptr->row_buf; rp--)
+ {
+ int i = ((*rp >> padding) & 0x03);
+
+ if (i > png_ptr->num_palette_max)
+ png_ptr->num_palette_max = i;
+
+ i = (((*rp >> padding) >> 2) & 0x03);
+
+ if (i > png_ptr->num_palette_max)
+ png_ptr->num_palette_max = i;
+
+ i = (((*rp >> padding) >> 4) & 0x03);
+
+ if (i > png_ptr->num_palette_max)
+ png_ptr->num_palette_max = i;
+
+ i = (((*rp >> padding) >> 6) & 0x03);
+
+ if (i > png_ptr->num_palette_max)
+ png_ptr->num_palette_max = i;
+
+ padding = 0;
+ }
+
+ break;
+ }
+
+ case 4:
+ {
+ for (; rp > png_ptr->row_buf; rp--)
+ {
+ int i = ((*rp >> padding) & 0x0f);
+
+ if (i > png_ptr->num_palette_max)
+ png_ptr->num_palette_max = i;
+
+ i = (((*rp >> padding) >> 4) & 0x0f);
+
+ if (i > png_ptr->num_palette_max)
+ png_ptr->num_palette_max = i;
+
+ padding = 0;
+ }
+
+ break;
+ }
+
+ case 8:
+ {
+ for (; rp > png_ptr->row_buf; rp--)
+ {
+ if (*rp >= png_ptr->num_palette_max)
+ png_ptr->num_palette_max = (int) *rp;
+ }
+
+ break;
+ }
+
+ default:
+ break;
+ }
+ }
+}
+#endif /* PNG_CHECK_FOR_INVALID_INDEX_SUPPORTED */
+
#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
#ifdef PNG_USER_TRANSFORM_PTR_SUPPORTED
diff --git a/pngwrite.c b/pngwrite.c
index 6d3fd4c..74aa736 100644
--- a/pngwrite.c
+++ b/pngwrite.c
@@ -1,8 +1,8 @@
/* pngwrite.c - general routines to write a PNG file
*
- * Last changed in libpng 1.5.7 [December 15, 2011]
- * Copyright (c) 1998-2011 Glenn Randers-Pehrson
+ * Last changed in libpng 1.5.10 [(PENDING RELEASE)]
+ * Copyright (c) 1998-2012 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
*
@@ -305,6 +305,11 @@
if (!(png_ptr->mode & PNG_HAVE_IDAT))
png_error(png_ptr, "No IDATs written into file");
+#ifdef PNG_WRITE_CHECK_FOR_INVALID_INDEX_SUPPORTED
+ if (png_ptr->num_palette_max > png_ptr->num_palette)
+ png_warning(png_ptr, "Wrote palette index exceeding num_palette");
+#endif
+
/* See if user wants us to write information chunks */
if (info_ptr != NULL)
{
@@ -798,6 +803,13 @@
}
#endif
+/* Added at libpng-1.5.10 */
+#ifdef PNG_WRITE_CHECK_FOR_INVALID_INDEX_SUPPORTED
+ /* Check for out-of-range palette index */
+ if(row_info.color_type == PNG_COLOR_TYPE_PALETTE)
+ png_do_check_palette_indexes(png_ptr, &row_info);
+#endif
+
/* Find a filter if necessary, filter the row and write it out. */
png_write_find_filter(png_ptr, &row_info);
diff --git a/scripts/pnglibconf.dfa b/scripts/pnglibconf.dfa
index 9279326..f06eb66 100644
--- a/scripts/pnglibconf.dfa
+++ b/scripts/pnglibconf.dfa
@@ -578,3 +578,13 @@
# leave the row_pointers member out of the info structure.
option INFO_IMAGE
+
+# added at libpng-1.5.10
+# Turn this off to disable warning about invalid palette index and
+# leave the num_palette_max member out of the png structure.
+
+option CHECK_FOR_INVALID_INDEX enables READ_CHECK_FOR_INVALID_INDEX
+option CHECK_FOR_INVALID_INDEX enables WRITE_CHECK_FOR_INVALID_INDEX
+option READ_CHECK_FOR_INVALID_INDEX requires READ CHECK_FOR_INVALID_INDEX
+option WRITE_CHECK_FOR_INVALID_INDEX requires WRITE CHECK_FOR_INVALID_INDEX
+
diff --git a/scripts/pnglibconf.h.prebuilt b/scripts/pnglibconf.h.prebuilt
index 6cf5701..6528db0 100644
--- a/scripts/pnglibconf.h.prebuilt
+++ b/scripts/pnglibconf.h.prebuilt
@@ -3,9 +3,9 @@
/* pnglibconf.h - library build configuration */
-/* Libpng 1.5.10beta03 - February 27, 2012 */
+/* Libpng 1.5.10beta03 - March 5, 2012 */
-/* Copyright (c) 1998-2011 Glenn Randers-Pehrson */
+/* Copyright (c) 1998-2012 Glenn Randers-Pehrson */
/* This code is released under the libpng license. */
/* For conditions of distribution and use, see the disclaimer */
@@ -41,6 +41,7 @@
#define PNG_bKGD_SUPPORTED
#define PNG_BUILD_GRAYSCALE_PALETTE_SUPPORTED
#define PNG_CHECK_cHRM_SUPPORTED
+#define PNG_CHECK_FOR_INVALID_INDEX_SUPPORTED
#define PNG_cHRM_SUPPORTED
#define PNG_CONSOLE_IO_SUPPORTED
#define PNG_CONVERT_tIME_SUPPORTED
@@ -70,6 +71,7 @@
#define PNG_READ_BACKGROUND_SUPPORTED
#define PNG_READ_BGR_SUPPORTED
#define PNG_READ_bKGD_SUPPORTED
+#define PNG_READ_CHECK_FOR_INVALID_INDEX_SUPPORTED
#define PNG_READ_cHRM_SUPPORTED
#define PNG_READ_COMPOSITE_NODIV_SUPPORTED
#define PNG_READ_COMPRESSED_TEXT_SUPPORTED
@@ -141,6 +143,7 @@
#define PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
#define PNG_WRITE_BGR_SUPPORTED
#define PNG_WRITE_bKGD_SUPPORTED
+#define PNG_WRITE_CHECK_FOR_INVALID_INDEX_SUPPORTED
#define PNG_WRITE_cHRM_SUPPORTED
#define PNG_WRITE_COMPRESSED_TEXT_SUPPORTED
#define PNG_WRITE_CUSTOMIZE_ZTXT_COMPRESSION_SUPPORTED
diff --git a/scripts/symbols.def b/scripts/symbols.def
index 74c3819..826c2ee 100644
--- a/scripts/symbols.def
+++ b/scripts/symbols.def
@@ -239,3 +239,4 @@
png_get_cHRM_XYZ_fixed @231
png_set_cHRM_XYZ @232
png_set_cHRM_XYZ_fixed @233
+ png_set_check_for_invalid_index @234
