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-rw-r--r--Build/source/libs/libpng/libpng-src/ANNOUNCE92
1 files changed, 66 insertions, 26 deletions
diff --git a/Build/source/libs/libpng/libpng-src/ANNOUNCE b/Build/source/libs/libpng/libpng-src/ANNOUNCE
index 366ace588b8..bca42501d23 100644
--- a/Build/source/libs/libpng/libpng-src/ANNOUNCE
+++ b/Build/source/libs/libpng/libpng-src/ANNOUNCE
@@ -1,4 +1,4 @@
-Libpng 1.6.23 - June 9, 2016
+Libpng 1.6.24 - August 4, 2016
This is a public release of libpng, intended for use in production codes.
@@ -7,38 +7,78 @@ Files available for download:
Source files with LF line endings (for Unix/Linux) and with a
"configure" script
- libpng-1.6.23.tar.xz (LZMA-compressed, recommended)
- libpng-1.6.23.tar.gz
+ libpng-1.6.24.tar.xz (LZMA-compressed, recommended)
+ libpng-1.6.24.tar.gz
Source files with CRLF line endings (for Windows), without the
"configure" script
- lpng1623.7z (LZMA-compressed, recommended)
- lpng1623.zip
+ lpng1624.7z (LZMA-compressed, recommended)
+ lpng1624.zip
Other information:
- libpng-1.6.23-README.txt
- libpng-1.6.23-LICENSE.txt
- libpng-1.6.23-*.asc (armored detached GPG signatures)
-
-Changes since the last public release (1.6.22):
-
- Stop a potential memory leak in png_set_tRNS() (Bug report by Ted Ying).
- Fixed the progressive reader to handle empty first IDAT chunk properly
- (patch by Timothy Nikkel). This bug was introduced in libpng-1.6.0 and
- only affected the libpng16 branch.
- Added tests in pngvalid.c to check zero-length IDAT chunks in various
- positions. Fixed the sequential reader to handle these more robustly
- (John Bowler).
- Corrected progressive read input buffer in pngvalid.c. The previous version
- the code invariably passed just one byte at a time to libpng. The intent
- was to pass a random number of bytes in the range 0..511.
- Moved sse2 prototype from pngpriv.h to contrib/intel/intel_sse.patch.
- Added missing ")" in pngerror.c (Matt Sarrett).
- Fixed undefined behavior in png_push_save_buffer(). Do not call
- memcpy() with a null source, even if count is zero (Leon Scroggins III).
- Fixed bad link to RFC2083 in png.5 (Nikola Forro).
+ libpng-1.6.24-README.txt
+ libpng-1.6.24-LICENSE.txt
+ libpng-1.6.24-*.asc (armored detached GPG signatures)
+
+Changes since the last public release (1.6.23):
+ Avoid potential overflow of the PNG_IMAGE_SIZE macro. This macro
+ is not used within libpng, but is used in some of the examples.
+ Correct filter heuristic overflow handling. This was broken when the
+ write filter code was moved out-of-line; if there is a single filter and
+ the heuristic sum overflows the calculation of the filtered line is not
+ completed. In versions prior to 1.6 the code was duplicated in-line
+ and the check not performed, so the filter operation completed; however,
+ in the multi-filter case where the sum is performed the 'none' filter would
+ be selected if all the sums overflowed, even if it wasn't in the filter
+ list. The fix to the first problem is simply to provide PNG_SIZE_MAX as
+ the current lmins sum value; this means the sum can never exceed it and
+ overflows silently. A reasonable compiler that does choose to inline
+ the code will simply eliminate the sum check.
+ The fix to the second problem is to use high precision arithmetic (this is
+ implemented in 1.7), however a simple safe fix here is to chose the lowest
+ numbered filter in the list from png_set_filter (this only works if the
+ first problem is also fixed) (John Bowler).
+ Use a more efficient absolute value calculation on SSE2 (Matthieu Darbois).
+ Fixed the case where PNG_IMAGE_BUFFER_SIZE can overflow in the application
+ as a result of the application using an increased 'row_stride'; previously
+ png_image_finish_read only checked for overflow on the base calculation of
+ components. (I.e. it checked for overflow of a 32-bit number on the total
+ number of pixel components in the output format, not the possibly padded row
+ length and not the number of bytes, which for linear formats is twice the
+ number of components.)
+ MSVC does not like '-(unsigned)', so replaced it with 0U-(unsigned)
+ MSVC does not like (uInt) = -(unsigned) (i.e. as an initializer), unless
+ the conversion is explicitly invoked by a cast.
+ Put the SKIP definition in the correct place. It needs to come after the
+ png.h include (see all the other .c files in contrib/libtests) because it
+ depends on PNG_LIBPNG_VER.
+ Removed the three compile warning options from the individual project
+ files into the zlib.props globals. It increases the warning level from 4
+ to All and adds a list of the warnings that need to be turned off. This is
+ semi-documentary; the intent is to tell libpng users which warnings have
+ been examined and judged non-fixable at present. The warning about
+ structure padding is fixable, but it would be a signficant change (moving
+ structure members around).
+ Optimized absolute value calculation in filter selection, similar to
+ code in the PAETH decoder in pngrutil.c. Build with PNG_USE_ABS to
+ use this.
+ Added pngcp to the build together with a pngcp.dfa configuration test.
+ Added high resolution timing to pngcp.
+ Added "Common linking failures" section to INSTALL.
+ Relocated misplaced #endif in png.c sRGB profile checking.
+ Fixed two Coverity issues in pngcp.c.
+ Avoid filter-selection heuristic sum calculations in cases where only one
+ filter is a candidate for selection. This trades off code size (added
+ private png_setup_*_row_only() functions) for speed.
+ Fixed some indentation to comply with our coding style.
+ Added contrib/tools/reindent.
+ Eliminated unnecessary tests of boolean png_isaligned() vs 0.
+ Conditionally compile SSE2 headers in contrib/intel/intel_sse.patch
+ Conditionally compile png_decompress_chunk().
+ Conditionally compile ARM_NEON headers in pngpriv.h
+ Updated contrib/intel/intel_sse.patch
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