-Libpng 1.6.13 - August 21, 2014
+Libpng 1.6.21 - January 15, 2016
This is a public release of libpng, intended for use in production codes.
Source files with LF line endings (for Unix/Linux) and with a
"configure" script
- libpng-1.6.13.tar.xz (LZMA-compressed, recommended)
- libpng-1.6.13.tar.gz
+ libpng-1.6.21.tar.xz (LZMA-compressed, recommended)
+ libpng-1.6.21.tar.gz
Source files with CRLF line endings (for Windows), without the
"configure" script
- lpng1613.7z (LZMA-compressed, recommended)
- lpng1613.zip
+ /scratch/glennrp/Libpng16/lpng1621.7z (LZMA-compressed, recommended)
+ /scratch/glennrp/Libpng16/lpng1621.zip
Other information:
- libpng-1.6.13-README.txt
- libpng-1.6.13-LICENSE.txt
- libpng-1.6.13-*.asc (armored detached GPG signatures)
-
-Changes since the last public release (1.6.12):
-
- Quieted -Wsign-compare and -Wclobber compiler warnings in
- contrib/pngminus/*.c
- Added "(void) png_ptr;" where needed in contrib/gregbook to quiet
- compiler complaints about unused pointers.
- Split a long output string in contrib/gregbook/rpng2-x.c.
- Added "PNG_SET_OPTION" requirement for sRGB chunk support to pnglibconf.dfa,
- Needed for write-only support (John Bowler).
- Changed "if defined(__ARM_NEON__)" to
- "if (defined(__ARM_NEON__) || defined(__ARM_NEON))" (James Wu).
- Fixed clang no-warning builds: png_digit was defined but never used.
- Fixed an incorrect separator ("/" should be "\") in scripts/makefile.vcwin32
- (bug report from Wolfgang S. Kechel). Bug was introduced in libpng-1.6.11.
- Also fixed makefile.bc32, makefile.bor, makefile.msc, makefile.intel, and
- makefile.tc3 similarly.
- Removed scripts/makefile.elf. It has not worked since libpng-1.5.0beta14
- due to elimination of the PNG_FUNCTION_EXPORT and PNG_DATA_EXPORT
- definitions from pngconf.h.
- Ensure that CMakeLists.txt makes the target "lib" directory before making
- symbolic link into it (SourceForge bug report #226 by Rolf Timmermans).
- Added opinion that the ECCN (Export Control Classification Number) for
- libpng is EAR99 to the README file.
- Eliminated use of "$<" in makefile explicit rules, when copying
- $PNGLIBCONF_H_PREBUILT. This does not work on some versions of make;
- bug introduced in libpng version 1.6.11.
- Made "ccopts" agree with "CFLAGS" in scripts/makefile.hp* and makefile.*sunu
+ libpng-1.6.21-README.txt
+ libpng-1.6.21-LICENSE.txt
+ libpng-1.6.21-*.asc (armored detached GPG signatures)
+
+Changes since the last public release (1.6.20):
+
+ Fixed syntax "$(command)" in tests/pngstest that some shells other than
+ bash could not parse (Bug report by Nelson Beebe). Use `command` instead.
+ Moved png_check_keyword() from pngwutil.c to pngset.c
+ Removed LE/BE dependencies in pngvalid, to 'fix' the current problem
+ in the BigEndian tests by not testing it, making the BE code the same
+ as the LE version.
+ Fixes to pngvalid for various reduced build configurations (eliminate unused
+ statics) and a fix for the case in rgb_to_gray when the digitize option
+ reduces graylo to 0, producing a large error.
+ Widened the 'limit' check on the internally calculated error limits in
+ the 'DIGITIZE' case (the code used prior to 1.7 for rgb_to_gray error
+ checks) and changed the check to only operate in non-release builds
+ (base build type not RC or RELEASE.)
+ Fixed undefined behavior in pngvalid.c, undefined because
+ (png_byte) << shift is undefined if it changes the signed bit
+ (because png_byte is promoted to int). The libpng exported functions
+ png_get_uint_32 and png_get_uint_16 handle this. (Bug reported by
+ David Drysdale as a result of reports from UBSAN in clang 3.8).
+ This changes pngvalid to use BE random numbers; this used to produce
+ errors but these should not be fixed as a result of the previous changes.
+ In projects/vstudio, combined readme.txt and WARNING into README.txt
+ Relocated assert() in contrib/tools/pngfix.c, bug found by American
+ Fuzzy Lop, reported by Brian Carpenter.
+ Marked 'limit' UNUSED in transform_range_check(). This only affects
+ release builds.
+ Worked around a false-positive Coverity issue in pngvalid.c.
Send comments/corrections/commendations to png-mng-implement at lists.sf.net
(subscription required; visit
projects / platform / upstream / libpng.git / blobdiff