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libpng: Update to 1.6.55

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(cherry picked from commit cf1c203015)
This commit is contained in:
Rémi Verschelde
2026-03-18 14:55:09 +01:00
committed by Thaddeus Crews
parent 8967d5893c
commit b5b335cee1
6 changed files with 15 additions and 15 deletions
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thirdparty/README.md
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@@ -590,7 +590,7 @@ Files extracted from upstream source:
## libpng
- Upstream: http://libpng.org/pub/png/libpng.html
- Version: 1.6.54 (02f2b4f4699f0ef9111a6534f093b53732df4452, 2026)
- Version: 1.6.55 (c3e304954a9cfd154bc0dfbfea2b01cd61d6546d, 2026)
- License: libpng/zlib
Files extracted from upstream source:
thirdparty/libpng/png.c
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@@ -13,7 +13,7 @@
#include "pngpriv.h"
/* Generate a compiler error if there is an old png.h in the search path. */
typedef png_libpng_version_1_6_54 Your_png_h_is_not_version_1_6_54;
typedef png_libpng_version_1_6_55 Your_png_h_is_not_version_1_6_55;
/* Sanity check the chunks definitions - PNG_KNOWN_CHUNKS from pngpriv.h and the
* corresponding macro definitions. This causes a compile time failure if
@@ -820,7 +820,7 @@ png_get_copyright(png_const_structrp png_ptr)
return PNG_STRING_COPYRIGHT
#else
return PNG_STRING_NEWLINE \
"libpng version 1.6.54" PNG_STRING_NEWLINE \
"libpng version 1.6.55" PNG_STRING_NEWLINE \
"Copyright (c) 2018-2026 Cosmin Truta" PNG_STRING_NEWLINE \
"Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson" \
PNG_STRING_NEWLINE \
thirdparty/libpng/png.h
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@@ -1,6 +1,6 @@
/* png.h - header file for PNG reference library
*
* libpng version 1.6.54
* libpng version 1.6.55
*
* Copyright (c) 2018-2026 Cosmin Truta
* Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
@@ -14,7 +14,7 @@
* libpng versions 0.89, June 1996, through 0.96, May 1997: Andreas Dilger
* libpng versions 0.97, January 1998, through 1.6.35, July 2018:
* Glenn Randers-Pehrson
* libpng versions 1.6.36, December 2018, through 1.6.54, January 2026:
* libpng versions 1.6.36, December 2018, through 1.6.55, February 2026:
* Cosmin Truta
* See also "Contributing Authors", below.
*/
@@ -238,7 +238,7 @@
* ...
* 1.5.30 15 10530 15.so.15.30[.0]
* ...
* 1.6.54 16 10654 16.so.16.54[.0]
* 1.6.55 16 10655 16.so.16.55[.0]
*
* Henceforth the source version will match the shared-library major and
* minor numbers; the shared-library major version number will be used for
@@ -274,7 +274,7 @@
*/
/* Version information for png.h - this should match the version in png.c */
#define PNG_LIBPNG_VER_STRING "1.6.54"
#define PNG_LIBPNG_VER_STRING "1.6.55"
#define PNG_HEADER_VERSION_STRING " libpng version " PNG_LIBPNG_VER_STRING "\n"
/* The versions of shared library builds should stay in sync, going forward */
@@ -285,7 +285,7 @@
/* These should match the first 3 components of PNG_LIBPNG_VER_STRING: */
#define PNG_LIBPNG_VER_MAJOR 1
#define PNG_LIBPNG_VER_MINOR 6
#define PNG_LIBPNG_VER_RELEASE 54
#define PNG_LIBPNG_VER_RELEASE 55
/* This should be zero for a public release, or non-zero for a
* development version.
@@ -316,7 +316,7 @@
* From version 1.0.1 it is:
* XXYYZZ, where XX=major, YY=minor, ZZ=release
*/
#define PNG_LIBPNG_VER 10654 /* 1.6.54 */
#define PNG_LIBPNG_VER 10655 /* 1.6.55 */
/* Library configuration: these options cannot be changed after
* the library has been built.
@@ -426,7 +426,7 @@ extern "C" {
/* This triggers a compiler error in png.c, if png.c and png.h
* do not agree upon the version number.
*/
typedef char *png_libpng_version_1_6_54;
typedef char *png_libpng_version_1_6_55;
/* Basic control structions. Read libpng-manual.txt or libpng.3 for more info.
*
thirdparty/libpng/pngconf.h
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@@ -1,6 +1,6 @@
/* pngconf.h - machine-configurable file for libpng
*
* libpng version 1.6.54
* libpng version 1.6.55
*
* Copyright (c) 2018-2026 Cosmin Truta
* Copyright (c) 1998-2002,2004,2006-2016,2018 Glenn Randers-Pehrson
thirdparty/libpng/pnglibconf.h
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@@ -1,6 +1,6 @@
/* pnglibconf.h - library build configuration */
/* libpng version 1.6.54 */
/* libpng version 1.6.55 */
/* Copyright (c) 2018-2026 Cosmin Truta */
/* Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson */
thirdparty/libpng/pngrtran.c
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@@ -1,6 +1,6 @@
/* pngrtran.c - transforms the data in a row for PNG readers
*
* Copyright (c) 2018-2025 Cosmin Truta
* Copyright (c) 2018-2026 Cosmin Truta
* Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
* Copyright (c) 1996-1997 Andreas Dilger
* Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
@@ -708,8 +708,8 @@ png_set_quantize(png_structrp png_ptr, png_colorp palette,
break;
t->next = hash[d];
t->left = (png_byte)i;
t->right = (png_byte)j;
t->left = png_ptr->palette_to_index[i];
t->right = png_ptr->palette_to_index[j];
hash[d] = t;
}
}