fc8450833a
are derived from previous versions.
Removed much of the long list of previous versions from png.h and
libpng.3.
132 lines
6.1 KiB
Plaintext
132 lines
6.1 KiB
Plaintext
Libpng 1.6.19rc03 - November 3, 2015
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This is not intended to be a public release. It will be replaced
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within a few weeks by a public version or by another test version.
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Files available for download:
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Source files with LF line endings (for Unix/Linux) and with a
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"configure" script
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1.6.19rc03.tar.xz (LZMA-compressed, recommended)
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1.6.19rc03.tar.gz
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Source files with CRLF line endings (for Windows), without the
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"configure" script
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lp1619r03.7z (LZMA-compressed, recommended)
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lp1619r03.zip
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Other information:
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1.6.19rc03-README.txt
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1.6.19rc03-LICENSE.txt
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libpng-1.6.19rc03-*.asc (armored detached GPG signatures)
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Changes since the last public release (1.6.18):
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Version 1.6.19beta01 [July 30, 2015]
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Updated obsolete information about the simplified API macros in the
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manual pages (Bug report by Arc Riley).
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Avoid potentially dereferencing NULL info_ptr in png_info_init_3().
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Rearranged png.h to put the major sections in the same order as
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in libpng17.
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Eliminated unused PNG_COST_SHIFT, PNG_WEIGHT_SHIFT, PNG_COST_FACTOR, and
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PNG_WEIGHT_FACTOR macros.
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Suppressed some warnings from the Borland C++ 5.5.1/5.82 compiler
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(Bug report by Viktor Szakats). Several warnings remain and are
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unavoidable, where we test for overflow.
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Fixed potential leak of png_pixels in contrib/pngminus/pnm2png.c
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Fixed uninitialized variable in contrib/gregbook/rpng2-x.c
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Version 1.6.19beta02 [August 19, 2015]
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Moved config.h.in~ from the "libpng_autotools_files" list to the
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"libpng_autotools_extra" list in autogen.sh because it was causing a
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false positive for missing files (bug report by Robert C. Seacord).
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Removed unreachable "break" statements in png.c, pngread.c, and pngrtran.c
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to suppress clang warnings (Bug report by Viktor Szakats).
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Fixed some bad links in the man page.
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Changed "n bit" to "n-bit" in comments.
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Added signed/unsigned 16-bit safety net. This removes the dubious
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0x8000 flag definitions on 16-bit systems. They aren't supported
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yet the defs *probably* work, however it seems much safer to do this
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and be advised if anyone, contrary to advice, is building libpng 1.6
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on a 16-bit system. It also adds back various switch default clauses
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for GCC; GCC errors out if they are not present (with an appropriately
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high level of warnings).
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Safely convert num_bytes to a png_byte in png_set_sig_bytes() (Robert
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Seacord).
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Fixed the recently reported 1's complement security issue by replacing
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the value that is illegal in the PNG spec, in both signed and unsigned
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values, with 0. Illegal unsigned values (anything greater than or equal
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to 0x80000000) can still pass through, but since these are not illegal
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in ANSI-C (unlike 0x80000000 in the signed case) the checking that
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occurs later can catch them (John Bowler).
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Version 1.6.19beta03 [September 26, 2015]
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Fixed png_save_int_32 when int is not 2's complement (John Bowler).
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Updated libpng16 with all the recent test changes from libpng17,
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including changes to pngvalid.c to ensure that the original,
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distributed, version of contrib/visupng/cexcept.h can be used
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(John Bowler).
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pngvalid contains the correction to the use of SAVE/STORE_
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UNKNOWN_CHUNKS; a bug revealed by changes in libpng 1.7. More
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tests contain the --strict option to detect warnings and the
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pngvalid-standard test has been corrected so that it does not
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turn on progressive-read. There is a separate test which does
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that. (John Bowler)
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Also made some signed/unsigned fixes.
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Make pngstest error limits version specific. Splitting the machine
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generated error structs out to a file allows the values to be updated
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without changing pngstest.c itself. Since libpng 1.6 and 1.7 have
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slightly different error limits this simplifies maintenance. The
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makepngs.sh script has also been updated to more accurately reflect
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current problems in libpng 1.7 (John Bowler).
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Incorporated new test PNG files into make check. tests/pngstest-*
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are changed so that the new test files are divided into 8 groups by
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gamma and alpha channel. These tests have considerably better code
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and pixel-value coverage than contrib/pngsuite; however,coverage is
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still incomplete (John Bowler).
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Removed the '--strict' in 1.6 because of the double-gamma-correction
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warning, updated pngstest-errors.h for the errors detected with the
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new contrib/testspngs PNG test files (John Bowler).
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Version 1.6.19beta04 [October 15, 2015]
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Worked around rgb-to-gray issues in libpng 1.6. The previous
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attempts to ignore the errors in the code aren't quite enough to
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deal with the 'channel selection' encoding added to libpng 1.7; abort.
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Fixed 'pow' macros in pngvalid.c. It is legal for 'pow' to be a
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macro, therefore the argument list cannot contain preprocessing
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directives. Make sure pow is a function where this happens. This is
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a minimal safe fix, the issue only arises in non-performance-critical
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code (bug report by Curtis Leach, fix by John Bowler).
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Added sPLT support to pngtest.c
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Version 1.6.19rc01 [October 23, 2015]
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No changes.
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Version 1.6.19rc02 [October 31, 2015]
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Prevent setting or writing over-length PLTE chunk (Cosmin Truta).
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Silently truncate over-length PLTE chunk while reading.
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Libpng incorrectly calculated the output rowbytes when the application
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decreased either the number of channels or the bit depth (or both) in
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a user transform. This was safe; libpng overallocated buffer space
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(potentially by quite a lot; up to 4 times the amount required) but,
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from 1.5.4 on, resulted in a png_error (John Bowler).
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Version 1.6.19rc03 [November 3, 2015]
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Fixed some inconsequential cut-and-paste typos in png_set_cHRM_XYZ_fixed().
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Clarified COPYRIGHT information to state explicitly that versions
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are derived from previous versions.
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Removed much of the long list of previous versions from png.h and
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libpng.3.
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Send comments/corrections/commendations to png-mng-implement at lists.sf.net
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(subscription required; visit
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https://lists.sourceforge.net/lists/listinfo/png-mng-implement
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to subscribe)
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or to glennrp at users.sourceforge.net
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Glenn R-P
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