Updated libpng to 1.6.43

.appveyor.yml

@@ -3,6 +3,7 @@ version: 1.6.x-{build}
 branches:
   except:
     - /libpng[0-1][0-7]/
+    - /v[0-1][.][0-7][.][0-9]+/
 
 image:
   - Visual Studio 2022

.editorconfig

@@ -0,0 +1,43 @@
+# https://editorconfig.org
+
+root = true
+
+[*]
+charset = utf-8
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+[*.txt]
+indent_style = space
+
+[*.[chS]]
+indent_style = space
+max_doc_length = 80
+max_line_length = 80
+
+[*.dfa]
+indent_style = space
+max_doc_length = 80
+max_line_length = 80
+
+[*.{awk,cmake}]
+indent_style = space
+max_doc_length = 80
+max_line_length = 100
+
+[*.{in,sh}]
+indent_style = space
+max_doc_length = 100
+max_line_length = 100
+
+[{Makefile.in,ltmain.sh}]
+indent_style = unset
+insert_final_newline = unset
+max_doc_length = unset
+max_line_length = unset
+trim_trailing_whitespace = unset
+
+[COMMIT_EDITMSG]
+indent_style = space
+max_doc_length = unset
+max_line_length = 72

.travis.yml

@@ -1,6 +1,7 @@
 branches:
   except:
     - /libpng[0-1][0-7]/
+    - /v[0-1][.][0-7][.][0-9]+/
 
 language: c
 

.yamllint.yml

@@ -3,3 +3,5 @@ rules:
   document-start: disable
   document-end: disable
   line-length: disable
+  truthy:
+    check-keys: false

ANNOUNCE

@@ -1,5 +1,5 @@
-libpng 1.6.42 - January 29, 2024
-================================
+libpng 1.6.43 - February 23, 2024
+=================================
 
 This is a public release of libpng, intended for use in production code.
 
@@ -9,13 +9,13 @@ Files available for download
 
 Source files with LF line endings (for Unix/Linux):
 
- * libpng-1.6.42.tar.xz (LZMA-compressed, recommended)
- * libpng-1.6.42.tar.gz (deflate-compressed)
+ * libpng-1.6.43.tar.xz (LZMA-compressed, recommended)
+ * libpng-1.6.43.tar.gz (deflate-compressed)
 
 Source files with CRLF line endings (for Windows):
 
- * lpng1642.7z (LZMA-compressed, recommended)
- * lpng1642.zip (deflate-compressed)
+ * lpng1643.7z (LZMA-compressed, recommended)
+ * lpng1643.zip (deflate-compressed)
 
 Other information:
 
@@ -25,47 +25,36 @@ Other information:
  * TRADEMARK.md
 
 
-Changes from version 1.6.41 to version 1.6.42
+Changes from version 1.6.42 to version 1.6.43
 ---------------------------------------------
 
- * Fixed the implementation of the macro function `png_check_sig`.
-   This was an API regression, introduced in libpng-1.6.41.
-   (Reported by Matthieu Darbois)
-
-
-Changes from version 1.6.40 to version 1.6.41
----------------------------------------------
-
- * Added SIMD-optimized code for the Loongarch LSX hardware.
-   (Contributed by GuXiWei, JinBo and ZhangLixia)
- * Fixed the run-time discovery of MIPS MSA hardware.
-   (Contributed by Sui Jingfeng)
- * Fixed an off-by-one error in the function `png_do_check_palette_indexes`,
-   which failed to recognize errors that might have existed in the first
-   column of a broken palette-encoded image. This was a benign regression
-   accidentally introduced in libpng-1.6.33. No pixel was harmed.
-   (Contributed by Adam Richter; reviewed by John Bowler)
- * Fixed, improved and modernized the contrib/pngminus programs, i.e.,
-   png2pnm.c and pnm2png.c
- * Removed old and peculiar portability hacks that were meant to silence
-   warnings issued by gcc version 7.1 alone.
+ * Fixed the row width check in png_check_IHDR().
+   This corrected a bug that was specific to the 16-bit platforms,
+   and removed a spurious compiler warning from the 64-bit builds.
+   (Reported by Jacek Caban; fixed by John Bowler)
+ * Added eXIf chunk support to the push-mode reader in pngpread.c.
+   (Contributed by Chris Blume)
+ * Added contrib/pngexif for the benefit of the users who would like
+   to inspect the content of eXIf chunks.
+ * Added contrib/conftest/basic.dfa, a basic build-time configuration.
    (Contributed by John Bowler)
- * Fixed and modernized the CMake file, and raised the minimum required
-   CMake version from 3.1 to 3.6.
-   (Contributed by Clinton Ingram, Timothy Lyanguzov, Tyler Kropp, et al.)
- * Allowed the configure script to disable the building of auxiliary tools
-   and tests, thus catching up with the CMake file.
-   (Contributed by Carlo Bramini)
- * Fixed a build issue on Mac.
-   (Contributed by Zixu Wang)
- * Moved the Autoconf macro files to scripts/autoconf.
- * Moved the CMake files (except for the main CMakeLists.txt) to
-   scripts/cmake and moved the list of their contributing authors to
-   scripts/cmake/AUTHORS.md
- * Updated the CI configurations and scripts.
- * Relicensed the CI scripts to the MIT License.
- * Improved the test coverage.
+ * Fixed a preprocessor condition in pngread.c that broke build-time
+   configurations like contrib/conftest/pngcp.dfa.
    (Contributed by John Bowler)
+ * Added CMake build support for LoongArch LSX.
+   (Contributed by GuXiWei)
+ * Fixed a CMake build error that occurred under a peculiar state of the
+   dependency tree. This was a regression introduced in libpng-1.6.41.
+   (Contributed by Dan Rosser)
+ * Marked the installed libpng headers as system headers in CMake.
+   (Contributed by Benjamin Buch)
+ * Updated the build support for RISCOS.
+   (Contributed by Cameron Cawley)
+ * Updated the makefiles to allow cross-platform builds to initialize
+   conventional make variables like AR and ARFLAGS.
+ * Added various improvements to the CI scripts in areas like version
+   consistency verification and text linting.
+ * Added version consistency verification to pngtest.c also.
 
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net.

AUTHORS

@@ -6,6 +6,7 @@ Authors, for copyright and licensing purposes.
 
  * Adam Richter
  * Andreas Dilger
+ * Chris Blume
  * Cosmin Truta
  * Dave Martindale
  * Eric S. Raymond

CHANGES

@@ -6130,7 +6130,7 @@ Version 1.6.40 [June 21, 2023]
   Cleaned up the code, the build scripts, and the documentation.
 
 Version 1.6.41 [January 24, 2024]
-  Added SIMD-optimized code for the Loongarch LSX hardware.
+  Added SIMD-optimized code for the LoongArch LSX hardware.
     (Contributed by GuXiWei, JinBo and ZhangLixia)
   Fixed the run-time discovery of MIPS MSA hardware.
     (Contributed by Sui Jingfeng)
@@ -6165,6 +6165,36 @@ Version 1.6.42 [January 29, 2024]
   Fixed the implementation of the macro function png_check_sig().
     This was an API regression, introduced in libpng-1.6.41.
     (Reported by Matthieu Darbois)
+  Fixed and updated the libpng manual.
+
+Version 1.6.43 [February 23, 2024]
+  Fixed the row width check in png_check_IHDR().
+    This corrected a bug that was specific to the 16-bit platforms,
+    and removed a spurious compiler warning from the 64-bit builds.
+    (Reported by Jacek Caban; fixed by John Bowler)
+  Added eXIf chunk support to the push-mode reader in pngpread.c.
+    (Contributed by Chris Blume)
+  Added contrib/pngexif for the benefit of the users who would like
+    to inspect the content of eXIf chunks.
+  Added contrib/conftest/basic.dfa, a basic build-time configuration.
+    (Contributed by John Bowler)
+  Fixed a preprocessor condition in pngread.c that broke build-time
+    configurations like contrib/conftest/pngcp.dfa.
+    (Contributed by John Bowler)
+  Added CMake build support for LoongArch LSX.
+    (Contributed by GuXiWei)
+  Fixed a CMake build error that occurred under a peculiar state of the
+    dependency tree. This was a regression introduced in libpng-1.6.41.
+    (Contributed by Dan Rosser)
+  Marked the installed libpng headers as system headers in CMake.
+    (Contributed by Benjamin Buch)
+  Updated the build support for RISCOS.
+    (Contributed by Cameron Cawley)
+  Updated the makefiles to allow cross-platform builds to initialize
+    conventional make variables like AR and ARFLAGS.
+  Added various improvements to the CI scripts in areas like version
+    consistency verification and text linting.
+  Added version consistency verification to pngtest.c also.
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net.
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