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Diffstat (limited to 'Build/source/libs/libpng/libpng-src/ANNOUNCE')
| -rw-r--r-- | Build/source/libs/libpng/libpng-src/ANNOUNCE | 92 |
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 (subscription required; visit https://lists.sourceforge.net/lists/listinfo/png-mng-implement |