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ChangeLog file for zlib Changes in 1.2.7 (2 May 2012) - Replace use of memmove() with a simple copy for portability - Test for existence of strerror - Restore gzgetc_ for backward compatibility with 1.2.6 - Fix build with non-GNU make on Solaris - Require gcc 4.0 or later on Mac OS X to use the hidden attribute - Include unistd.h for Watcom C - Use __WATCOMC__ instead of __WATCOM__ - Do not use the visibility attribute if NO_VIZ defined - Improve the detection of no hidden visibility attribute - Avoid using __int64 for gcc or solo compilation - Cast to char * in gzprintf to avoid warnings [Zinser] - Fix make_vms.com for VAX [Zinser] - Don't use library or built-in byte swaps - Simplify test and use of gcc hidden attribute - Fix bug in gzclose_w() when gzwrite() fails to allocate memory - Add "x" (O_EXCL) and "e" (O_CLOEXEC) modes support to gzopen() - Fix bug in test/minigzip.c for configure --solo - Fix contrib/vstudio project link errors [Mohanathas] - Add ability to choose the builder in make_vms.com [Schweda] - Add DESTDIR support to mingw32 win32/Makefile.gcc - Fix comments in win32/Makefile.gcc for proper usage - Allow overriding the default install locations for cmake - Generate and install the pkg-config file with cmake - Build both a static and a shared version of zlib with cmake - Include version symbols for cmake builds - If using cmake with MSVC, add the source directory to the includes - Remove unneeded EXTRA_CFLAGS from win32/Makefile.gcc [Truta] - Move obsolete emx makefile to old [Truta] - Allow the use of -Wundef when compiling or using zlib - Avoid the use of the -u option with mktemp - Improve inflate() documentation on the use of Z_FINISH - Recognize clang as gcc - Add gzopen_w() in Windows for wide character path names - Rename zconf.h in CMakeLists.txt to move it out of the way - Add source directory in CMakeLists.txt for building examples - Look in build directory for zlib.pc in CMakeLists.txt - Remove gzflags from zlibvc.def in vc9 and vc10 - Fix contrib/minizip compilation in the MinGW environment - Update ./configure for Solaris, support --64 [Mooney] - Remove -R. from Solaris shared build (possible security issue) - Avoid race condition for parallel make (-j) running example - Fix type mismatch between get_crc_table() and crc_table - Fix parsing of version with "-" in CMakeLists.txt [Snider, Ziegler] - Fix the path to zlib.map in CMakeLists.txt - Force the native libtool in Mac OS X to avoid GNU libtool [Beebe] - Add instructions to win32/Makefile.gcc for shared install [Torri] Changes in 1.2.6.1 (12 Feb 2012) - Avoid the use of the Objective-C reserved name "id" - Include io.h in gzguts.h for Microsoft compilers - Fix problem with ./configure --prefix and gzgetc macro - Include gz_header definition when compiling zlib solo - Put gzflags() functionality back in zutil.c - Avoid library header include in crc32.c for Z_SOLO - Use name in GCC_CLASSIC as C compiler for coverage testing, if set - Minor cleanup in contrib/minizip/zip.c [Vollant] - Update make_vms.com [Zinser] - Remove unnecessary gzgetc_ function - Use optimized byte swap operations for Microsoft and GNU [Snyder] - Fix minor typo in zlib.h comments [Rzesniowiecki] Changes in 1.2.6 (29 Jan 2012) - Update the Pascal interface in contrib/pascal - Fix function numbers for gzgetc_ in zlibvc.def files - Fix configure.ac for contrib/minizip [Schiffer] - Fix large-entry detection in minizip on 64-bit systems [Schiffer] - Have ./configure use the compiler return code for error indication - Fix CMakeLists.txt for cross compilation [McClure] - Fix contrib/minizip/zip.c for 64-bit architectures [Dalsnes] - Fix compilation of contrib/minizip on FreeBSD [Marquez] - Correct suggested usages in win32/Makefile.msc [Shachar, Horvath] - Include io.h for Turbo C / Borland C on all platforms [Truta] - Make version explicit in contrib/minizip/configure.ac [Bosmans] - Avoid warning for no encryption in contrib/minizip/zip.c [Vollant] - Minor cleanup up contrib/minizip/unzip.c [Vollant] - Fix bug when compiling minizip with C++ [Vollant] - Protect for long name and extra fields in contrib/minizip [Vollant] - Avoid some warnings in contrib/minizip [Vollant] - Add -I../.. -L../.. to CFLAGS for minizip and miniunzip - Add missing libs to minizip linker command - Add support for VPATH builds in contrib/minizip - Add an --enable-demos option to contrib/minizip/configure - Add the generation of configure.log by ./configure - Exit when required parameters not provided to win32/Makefile.gcc - Have gzputc return the character written instead of the argument - Use the -m option on ldconfig for BSD systems [Tobias] - Correct in zlib.map when deflateResetKeep was added Changes in 1.2.5.3 (15 Jan 2012) - Restore gzgetc function for binary compatibility - Do not use _lseeki64 under Borland C++ [Truta] - Update win32/Makefile.msc to build test/*.c [Truta] - Remove old/visualc6 given CMakefile and other alternatives - Update AS400 build files and documentation [Monnerat] - Update win32/Makefile.gcc to build test/*.c [Truta] - Permit stronger flushes after Z_BLOCK flushes - Avoid extraneous empty blocks when doing empty flushes - Permit Z_NULL arguments to deflatePending - Allow deflatePrime() to insert bits in the middle of a stream - Remove second empty static block for Z_PARTIAL_FLUSH - Write out all of the available bits when using Z_BLOCK - Insert the first two strings in the hash table after a flush Changes in 1.2.5.2 (17 Dec 2011) - fix ld error: unable to find version dependency 'ZLIB_1.2.5' - use relative symlinks for shared libs - Avoid searching past window for Z_RLE strategy - Assure that high-water mark initialization is always applied in deflate - Add assertions to fill_window() in deflate.c to match comments - Update python link in README - Correct spelling error in gzread.c - Fix bug in gzgets() for a concatenated empty gzip stream - Correct error in comment for gz_make() - Change gzread() and related to ignore junk after gzip streams - Allow gzread() and related to continue after gzclearerr() - Allow gzrewind() and gzseek() after a premature end-of-file - Simplify gzseek() now that raw after gzip is ignored - Change gzgetc() to a macro for speed (~40% speedup in testing) - Fix gzclose() to return the actual error last encountered - Always add large file support for windows - Include zconf.h for windows large file support - Include zconf.h.cmakein for windows large file support - Update zconf.h.cmakein on make distclean - Merge vestigial vsnprintf determination from zutil.h to gzguts.h - Clarify how gzopen() appends in zlib.h comments - Correct documentation of gzdirect() since junk at end now ignored - Add a transparent write mode to gzopen() when 'T' is in the mode - Update python link in zlib man page - Get inffixed.h and MAKEFIXED result to match - Add a ./config --solo option to make zlib subset with no libary use - Add undocumented inflateResetKeep() function for CAB file decoding - Add --cover option to ./configure for gcc coverage testing - Add #define ZLIB_CONST option to use const in the z_stream interface - Add comment to gzdopen() in zlib.h to use dup() when using fileno() - Note behavior of uncompress() to provide as much data as it can - Add files in contrib/minizip to aid in building libminizip - Split off AR options in Makefile.in and configure - Change ON macro to Z_ARG to avoid application conflicts - Facilitate compilation with Borland C++ for pragmas and vsnprintf - Include io.h for Turbo C / Borland C++ - Move example.c and minigzip.c to test/ - Simplify incomplete code table filling in inflate_table() - Remove code from inflate.c and infback.c that is impossible to execute - Test the inflate code with full coverage - Allow deflateSetDictionary, inflateSetDictionary at any time (in raw) - Add deflateResetKeep and fix inflateResetKeep to retain dictionary - Fix gzwrite.c to accommodate reduced memory zlib compilation - Have inflate() with Z_FINISH avoid the allocation of a window - Do not set strm->adler when doing raw inflate - Fix gzeof() to behave just like feof() when read is not past end of file - Fix bug in gzread.c when end-of-file is reached - Avoid use of Z_BUF_ERROR in gz* functions except for premature EOF - Document gzread() capability to read concurrently written files - Remove hard-coding of resource compiler in CMakeLists.txt [Blammo] Changes in 1.2.5.1 (10 Sep 2011) - Update FAQ entry on shared builds (#13) - Avoid symbolic argument to chmod in Makefile.in - Fix bug and add consts in contrib/puff [Oberhumer] - Update contrib/puff/zeros.raw test file to have all block types - Add full coverage test for puff in contrib/puff/Makefile - Fix static-only-build install in Makefile.in - Fix bug in unzGetCurrentFileInfo() in contrib/minizip [Kuno] - Add libz.a dependency to shared in Makefile.in for parallel builds - Spell out "number" (instead of "nb") in zlib.h for total_in, total_out - Replace $(...) with `...` in configure for non-bash sh [Bowler] - Add darwin* to Darwin* and solaris* to SunOS\ 5* in configure [Groffen] - Add solaris* to Linux* in configure to allow gcc use [Groffen] - Add *bsd* to Linux* case in configure [Bar-Lev] - Add inffast.obj to dependencies in win32/Makefile.msc - Correct spelling error in deflate.h [Kohler] - Change libzdll.a again to libz.dll.a (!) in win32/Makefile.gcc - Add test to configure for GNU C looking for gcc in output of $cc -v - Add zlib.pc generation to win32/Makefile.gcc [Weigelt] - Fix bug in zlib.h for _FILE_OFFSET_BITS set and _LARGEFILE64_SOURCE not - Add comment in zlib.h that adler32_combine with len2 < 0 makes no sense - Make NO_DIVIDE option in adler32.c much faster (thanks to John Reiser) - Make stronger test in zconf.h to include unistd.h for LFS - Apply Darwin patches for 64-bit file offsets to contrib/minizip [Slack] - Fix zlib.h LFS support when Z_PREFIX used - Add updated as400 support (removed from old) [Monnerat] - Avoid deflate sensitivity to volatile input data - Avoid division in adler32_combine for NO_DIVIDE - Clarify the use of Z_FINISH with deflateBound() amount of space - Set binary for output file in puff.c - Use u4 type for crc_table to avoid conversion warnings - Apply casts in zlib.h to avoid conversion warnings - Add OF to prototypes for adler32_combine_ and crc32_combine_ [Miller] - Improve inflateSync() documentation to note indeterminancy - Add deflatePending() function to return the amount of pending output - Correct the spelling of "specification" in FAQ [Randers-Pehrson] - Add a check in configure for stdarg.h, use for gzprintf() - Check that pointers fit in ints when gzprint() compiled old style - Add dummy name before $(SHAREDLIBV) in Makefile [Bar-Lev, Bowler] - Delete line in configure that adds -L. libz.a to LDFLAGS [Weigelt] - Add debug records in assmebler code [Londer] - Update RFC references to use http://tools.ietf.org/html/... [Li] - Add --archs option, use of libtool to configure for Mac OS X [Borstel] Changes in 1.2.5 (19 Apr 2010) - Disable visibility attribute in win32/Makefile.gcc [Bar-Lev] - Default to libdir as sharedlibdir in configure [Nieder] - Update copyright dates on modified source files - Update trees.c to be able to generate modified trees.h - Exit configure for MinGW, suggesting win32/Makefile.gcc - Check for NULL path in gz_open [Homurlu] Changes in 1.2.4.5 (18 Apr 2010) - Set sharedlibdir in configure [Torok] - Set LDFLAGS in Makefile.in [Bar-Lev] - Avoid mkdir objs race condition in Makefile.in [Bowler] - Add ZLIB_INTERNAL in front of internal inter-module functions and arrays - Define ZLIB_INTERNAL to hide internal functions and arrays for GNU C - Don't use hidden attribute when it is a warning generator (e.g. Solaris) Changes in 1.2.4.4 (18 Apr 2010) - Fix CROSS_PREFIX executable testing, CHOST extract, mingw* [Torok] - Undefine _LARGEFILE64_SOURCE in zconf.h if it is zero, but not if empty - Try to use bash or ksh regardless of functionality of /bin/sh - Fix configure incompatibility with NetBSD sh - Remove attempt to run under bash or ksh since have better NetBSD fix - Fix win32/Makefile.gcc for MinGW [Bar-Lev] - Add diagnostic messages when using CROSS_PREFIX in configure - Added --sharedlibdir option to configure [Weigelt] - Use hidden visibility attribute when available [Frysinger] Changes in 1.2.4.3 (10 Apr 2010) - Only use CROSS_PREFIX in configure for ar and ranlib if they exist - Use CROSS_PREFIX for nm [Bar-Lev] - Assume _LARGEFILE64_SOURCE defined is equivalent to true - Avoid use of undefined symbols in #if with && and || - Make *64 prototypes in gzguts.h consistent with functions - Add -shared load option for MinGW in configure [Bowler] - Move z_off64_t to public interface, use instead of off64_t - Remove ! from shell test in configure (not portable to Solaris) - Change +0 macro tests to -0 for possibly increased portability Changes in 1.2.4.2 (9 Apr 2010) - Add consistent carriage returns to readme.txt's in masmx86 and masmx64 - Really provide prototypes for *64 functions when building without LFS - Only define unlink() in minigzip.c if unistd.h not included - Update README to point to contrib/vstudio project files - Move projects/vc6 to old/ and remove projects/ - Include stdlib.h in minigzip.c for setmode() definition under WinCE - Clean up assembler builds in win32/Makefile.msc [Rowe] - Include sys/types.h for Microsoft for off_t definition - Fix memory leak on error in gz_open() - Symbolize nm as $NM in configure [Weigelt] - Use TEST_LDSHARED instead of LDSHARED to link test programs [Weigelt] - Add +0 to _FILE_OFFSET_BITS and _LFS64_LARGEFILE in case not defined - Fix bug in gzeof() to take into account unused input data - Avoid initialization of structures with variables in puff.c - Updated win32/README-WIN32.txt [Rowe] Changes in 1.2.4.1 (28 Mar 2010) - Remove the use of [a-z] constructs for sed in configure [gentoo 310225] - Remove $(SHAREDLIB) from LIBS in Makefile.in [Creech] - Restore "for debugging" comment on sprintf() in gzlib.c - Remove fdopen for MVS from gzguts.h - Put new README-WIN32.txt in win32 [Rowe] - Add check for shell to configure and invoke another shell if needed - Fix big fat stinking bug in gzseek() on uncompressed files - Remove vestigial F_OPEN64 define in zutil.h - Set and check the value of _LARGEFILE_SOURCE and _LARGEFILE64_SOURCE - Avoid errors on non-LFS systems when applications define LFS macros - Set EXE to ".exe" in configure for MINGW [Kahle] - Match crc32() in crc32.c exactly to the prototype in zlib.h [Sherrill] - Add prefix for cross-compilation in win32/makefile.gcc [Bar-Lev] - Add DLL install in win32/makefile.gcc [Bar-Lev] - Allow Linux* or linux* from uname in configure [Bar-Lev] - Allow ldconfig to be redefined in configure and Makefile.in [Bar-Lev] - Add cross-compilation prefixes to configure [Bar-Lev] - Match type exactly in gz_load() invocation in gzread.c - Match type exactly of zcalloc() in zutil.c to zlib.h alloc_func - Provide prototypes for *64 functions when building zlib without LFS - Don't use -lc when linking shared library on MinGW - Remove errno.h check in configure and vestigial errno code in zutil.h Changes in 1.2.4 (14 Mar 2010) - Fix VER3 extraction in configure for no fourth subversion - Update zlib.3, add docs to Makefile.in to make .pdf out of it - Add zlib.3.pdf to distribution - Don't set error code in gzerror() if passed pointer is NULL - Apply destination directory fixes to CMakeLists.txt [Lowman] - Move #cmakedefine's to a new zconf.in.cmakein - Restore zconf.h for builds that don't use configure or cmake - Add distclean to dummy Makefile for convenience - Update and improve INDEX, README, and FAQ - Update CMakeLists.txt for the return of zconf.h [Lowman] - Update contrib/vstudio/vc9 and vc10 [Vollant] - Change libz.dll.a back to libzdll.a in win32/Makefile.gcc - Apply license and readme changes to contrib/asm686 [Raiter] - Check file name lengths and add -c option in minigzip.c [Li] - Update contrib/amd64 and contrib/masmx86/ [Vollant] - Avoid use of "eof" parameter in trees.c to not shadow library variable - Update make_vms.com for removal of zlibdefs.h [Zinser] - Update assembler code and vstudio projects in contrib [Vollant] - Remove outdated assembler code contrib/masm686 and contrib/asm586 - Remove old vc7 and vc8 from contrib/vstudio - Update win32/Makefile.msc, add ZLIB_VER_SUBREVISION [Rowe] - Fix memory leaks in gzclose_r() and gzclose_w(), file leak in gz_open() - Add contrib/gcc_gvmat64 for longest_match and inflate_fast [Vollant] - Remove *64 functions from win32/zlib.def (they're not 64-bit yet) - Fix bug in void-returning vsprintf() case in gzwrite.c - Fix name change from inflate.h in contrib/inflate86/inffas86.c - Check if temporary file exists before removing in make_vms.com [Zinser] - Fix make install and uninstall for --static option - Fix usage of _MSC_VER in gzguts.h and zutil.h [Truta] - Update readme.txt in contrib/masmx64 and masmx86 to assemble Changes in 1.2.3.9 (21 Feb 2010) - Expunge gzio.c - Move as400 build information to old - Fix updates in contrib/minizip and contrib/vstudio - Add const to vsnprintf test in configure to avoid warnings [Weigelt] - Delete zconf.h (made by configure) [Weigelt] - Change zconf.in.h to zconf.h.in per convention [Weigelt] - Check for NULL buf in gzgets() - Return empty string for gzgets() with len == 1 (like fgets()) - Fix description of gzgets() in zlib.h for end-of-file, NULL return - Update minizip to 1.1 [Vollant] - Avoid MSVC loss of data warnings in gzread.c, gzwrite.c - Note in zlib.h that gzerror() should be used to distinguish from EOF - Remove use of snprintf() from gzlib.c - Fix bug in gzseek() - Update contrib/vstudio, adding vc9 and vc10 [Kuno, Vollant] - Fix zconf.h generation in CMakeLists.txt [Lowman] - Improve comments in zconf.h where modified by configure Changes in 1.2.3.8 (13 Feb 2010) - Clean up text files (tabs, trailing whitespace, etc.) [Oberhumer] - Use z_off64_t in gz_zero() and gz_skip() to match state->skip - Avoid comparison problem when sizeof(int) == sizeof(z_off64_t) - Revert to Makefile.in from 1.2.3.6 (live with the clutter) - Fix missing error return in gzflush(), add zlib.h note - Add *64 functions to zlib.map [Levin] - Fix signed/unsigned comparison in gz_comp() - Use SFLAGS when testing shared linking in configure - Add --64 option to ./configure to use -m64 with gcc - Fix ./configure --help to correctly name options - Have make fail if a test fails [Levin] - Avoid buffer overrun in contrib/masmx64/gvmat64.asm [Simpson] - Remove assembler object files from contrib Changes in 1.2.3.7 (24 Jan 2010) - Always gzopen() with O_LARGEFILE if available - Fix gzdirect() to work immediately after gzopen() or gzdopen() - Make gzdirect() more precise when the state changes while reading - Improve zlib.h documentation in many places - Catch memory allocation failure in gz_open() - Complete close operation if seek forward in gzclose_w() fails - Return Z_ERRNO from gzclose_r() if close() fails - Return Z_STREAM_ERROR instead of EOF for gzclose() being passed NULL - Return zero for gzwrite() errors to match zlib.h description - Return -1 on gzputs() error to match zlib.h description - Add zconf.in.h to allow recovery from configure modification [Weigelt] - Fix static library permissions in Makefile.in [Weigelt] - Avoid warnings in configure tests that hide functionality [Weigelt] - Add *BSD and DragonFly to Linux case in configure [gentoo 123571] - Change libzdll.a to libz.dll.a in win32/Makefile.gcc [gentoo 288212] - Avoid access of uninitialized data for first inflateReset2 call [Gomes] - Keep object files in subdirectories to reduce the clutter somewhat - Remove default Makefile and zlibdefs.h, add dummy Makefile - Add new external functions to Z_PREFIX, remove duplicates, z_z_ -> z_ - Remove zlibdefs.h completely -- modify zconf.h instead Changes in 1.2.3.6 (17 Jan 2010) - Avoid void * arithmetic in gzread.c and gzwrite.c - Make compilers happier with const char * for gz_error message - Avoid unused parameter warning in inflate.c - Avoid signed-unsigned comparison warning in inflate.c - Indent #pragma's for traditional C - Fix usage of strwinerror() in glib.c, change to gz_strwinerror() - Correct email address in configure for system options - Update make_vms.com and add make_vms.com to contrib/minizip [Zinser] - Update zlib.map [Brown] - Fix Makefile.in for Solaris 10 make of example64 and minizip64 [Torok] - Apply various fixes to CMakeLists.txt [Lowman] - Add checks on len in gzread() and gzwrite() - Add error message for no more room for gzungetc() - Remove zlib version check in gzwrite() - Defer compression of gzprintf() result until need to - Use snprintf() in gzdopen() if available - Remove USE_MMAP configuration determination (only used by minigzip) - Remove examples/pigz.c (available separately) - Update examples/gun.c to 1.6 Changes in 1.2.3.5 (8 Jan 2010) - Add space after #if in zutil.h for some compilers - Fix relatively harmless bug in deflate_fast() [Exarevsky] - Fix same problem in deflate_slow() - Add $(SHAREDLIBV) to LIBS in Makefile.in [Brown] - Add deflate_rle() for faster Z_RLE strategy run-length encoding - Add deflate_huff() for faster Z_HUFFMAN_ONLY encoding - Change name of "write" variable in inffast.c to avoid library collisions - Fix premature EOF from gzread() in gzio.c [Brown] - Use zlib header window size if windowBits is 0 in inflateInit2() - Remove compressBound() call in deflate.c to avoid linking compress.o - Replace use of errno in gz* with functions, support WinCE [Alves] - Provide alternative to perror() in minigzip.c for WinCE [Alves] - Don't use _vsnprintf on later versions of MSVC [Lowman] - Add CMake build script and input file [Lowman] - Update contrib/minizip to 1.1 [Svensson, Vollant] - Moved nintendods directory from contrib to . - Replace gzio.c with a new set of routines with the same functionality - Add gzbuffer(), gzoffset(), gzclose_r(), gzclose_w() as part of above - Update contrib/minizip to 1.1b - Change gzeof() to return 0 on error instead of -1 to agree with zlib.h Changes in 1.2.3.4 (21 Dec 2009) - Use old school .SUFFIXES in Makefile.in for FreeBSD compatibility - Update comments in configure and Makefile.in for default --shared - Fix test -z's in configure [Marquess] - Build examplesh and minigzipsh when not testing - Change NULL's to Z_NULL's in deflate.c and in comments in zlib.h - Import LDFLAGS from the environment in configure - Fix configure to populate SFLAGS with discovered CFLAGS options - Adapt make_vms.com to the new Makefile.in [Zinser] - Add zlib2ansi script for C++ compilation [Marquess] - Add _FILE_OFFSET_BITS=64 test to make test (when applicable) - Add AMD64 assembler code for longest match to contrib [Teterin] - Include options from $SFLAGS when doing $LDSHARED - Simplify 64-bit file support by introducing z_off64_t type - Make shared object files in objs directory to work around old Sun cc - Use only three-part version number for Darwin shared compiles - Add rc option to ar in Makefile.in for when ./configure not run - Add -WI,-rpath,. to LDFLAGS for OSF 1 V4* - Set LD_LIBRARYN32_PATH for SGI IRIX shared compile - Protect against _FILE_OFFSET_BITS being defined when compiling zlib - Rename Makefile.in targets allstatic to static and allshared to shared - Fix static and shared Makefile.in targets to be independent - Correct error return bug in gz_open() by setting state [Brown] - Put spaces before ;;'s in configure for better sh compatibility - Add pigz.c (parallel implementation of gzip) to examples/ - Correct constant in crc32.c to UL [Leventhal] - Reject negative lengths in crc32_combine() - Add inflateReset2() function to work like inflateEnd()/inflateInit2() - Include sys/types.h for _LARGEFILE64_SOURCE [Brown] - Correct typo in doc/algorithm.txt [Janik] - Fix bug in adler32_combine() [Zhu] - Catch missing-end-of-block-code error in all inflates and in puff Assures that random input to inflate eventually results in an error - Added enough.c (calculation of ENOUGH for inftrees.h) to examples/ - Update ENOUGH and its usage to reflect discovered bounds - Fix gzerror() error report on empty input file [Brown] - Add ush casts in trees.c to avoid pedantic runtime errors - Fix typo in zlib.h uncompress() description [Reiss] - Correct inflate() comments with regard to automatic header detection - Remove deprecation comment on Z_PARTIAL_FLUSH (it stays) - Put new version of gzlog (2.0) in examples with interruption recovery - Add puff compile option to permit invalid distance-too-far streams - Add puff TEST command options, ability to read piped input - Prototype the *64 functions in zlib.h when _FILE_OFFSET_BITS == 64, but _LARGEFILE64_SOURCE not defined - Fix Z_FULL_FLUSH to truly erase the past by resetting s->strstart - Fix deflateSetDictionary() to use all 32K for output consistency - Remove extraneous #define MIN_LOOKAHEAD in deflate.c (in deflate.h) - Clear bytes after deflate lookahead to avoid use of uninitialized data - Change a limit in inftrees.c to be more transparent to Coverity Prevent - Update win32/zlib.def with exported symbols from zlib.h - Correct spelling errors in zlib.h [Willem, Sobrado] - Allow Z_BLOCK for deflate() to force a new block - Allow negative bits in inflatePrime() to delete existing bit buffer - Add Z_TREES flush option to inflate() to return at end of trees - Add inflateMark() to return current state information for random access - Add Makefile for NintendoDS to contrib [Costa] - Add -w in configure compile tests to avoid spurious warnings [Beucler] - Fix typos in zlib.h comments for deflateSetDictionary() - Fix EOF detection in transparent gzread() [Maier] Changes in 1.2.3.3 (2 October 2006) - Make --shared the default for configure, add a --static option - Add compile option to permit invalid distance-too-far streams - Add inflateUndermine() function which is required to enable above - Remove use of "this" variable name for C++ compatibility [Marquess] - Add testing of shared library in make test, if shared library built - Use ftello() and fseeko() if available instead of ftell() and fseek() - Provide two versions of all functions that use the z_off_t type for binary compatibility -- a normal version and a 64-bit offset version, per the Large File Support Extension when _LARGEFILE64_SOURCE is defined; use the 64-bit versions by default when _FILE_OFFSET_BITS is defined to be 64 - Add a --uname= option to configure to perhaps help with cross-compiling Changes in 1.2.3.2 (3 September 2006) - Turn off silly Borland warnings [Hay] - Use off64_t and define _LARGEFILE64_SOURCE when present - Fix missing dependency on inffixed.h in Makefile.in - Rig configure --shared to build both shared and static [Teredesai, Truta] - Remove zconf.in.h and instead create a new zlibdefs.h file - Fix contrib/minizip/unzip.c non-encrypted after encrypted [Vollant] - Add treebuild.xml (see http://treebuild.metux.de/) [Weigelt] Changes in 1.2.3.1 (16 August 2006) - Add watcom directory with OpenWatcom make files [Daniel] - Remove #undef of FAR in zconf.in.h for MVS [Fedtke] - Update make_vms.com [Zinser] - Use -fPIC for shared build in configure [Teredesai, Nicholson] - Use only major version number for libz.so on IRIX and OSF1 [Reinholdtsen] - Use fdopen() (not _fdopen()) for Interix in zutil.h [Bck] - Add some FAQ entries about the contrib directory - Update the MVS question in the FAQ - Avoid extraneous reads after EOF in gzio.c [Brown] - Correct spelling of "successfully" in gzio.c [Randers-Pehrson] - Add comments to zlib.h about gzerror() usage [Brown] - Set extra flags in gzip header in gzopen() like deflate() does - Make configure options more compatible with double-dash conventions [Weigelt] - Clean up compilation under Solaris SunStudio cc [Rowe, Reinholdtsen] - Fix uninstall target in Makefile.in [Truta] - Add pkgconfig support [Weigelt] - Use $(DESTDIR) macro in Makefile.in [Reinholdtsen, Weigelt] - Replace set_data_type() with a more accurate detect_data_type() in trees.c, according to the txtvsbin.txt document [Truta] - Swap the order of #include <stdio.h> and #include "zlib.h" in gzio.c, example.c and minigzip.c [Truta] - Shut up annoying VS2005 warnings about standard C deprecation [Rowe, Truta] (where?) - Fix target "clean" from win32/Makefile.bor [Truta] - Create .pdb and .manifest files in win32/makefile.msc [Ziegler, Rowe] - Update zlib www home address in win32/DLL_FAQ.txt [Truta] - Update contrib/masmx86/inffas32.asm for VS2005 [Vollant, Van Wassenhove] - Enable browse info in the "Debug" and "ASM Debug" configurations in the Visual C++ 6 project, and set (non-ASM) "Debug" as default [Truta] - Add pkgconfig support [Weigelt] - Add ZLIB_VER_MAJOR, ZLIB_VER_MINOR and ZLIB_VER_REVISION in zlib.h, for use in win32/zlib1.rc [Polushin, Rowe, Truta] - Add a document that explains the new text detection scheme to doc/txtvsbin.txt [Truta] - Add rfc1950.txt, rfc1951.txt and rfc1952.txt to doc/ [Truta] - Move algorithm.txt into doc/ [Truta] - Synchronize FAQ with website - Fix compressBound(), was low for some pathological cases [Fearnley] - Take into account wrapper variations in deflateBound() - Set examples/zpipe.c input and output to binary mode for Windows - Update examples/zlib_how.html with new zpipe.c (also web site) - Fix some warnings in examples/gzlog.c and examples/zran.c (it seems that gcc became pickier in 4.0) - Add zlib.map for Linux: "All symbols from zlib-1.1.4 remain un-versioned, the patch adds versioning only for symbols introduced in zlib-1.2.0 or later. It also declares as local those symbols which are not designed to be exported." [Levin] - Update Z_PREFIX list in zconf.in.h, add --zprefix option to configure - Do not initialize global static by default in trees.c, add a response NO_INIT_GLOBAL_POINTERS to initialize them if needed [Marquess] - Don't use strerror() in gzio.c under WinCE [Yakimov] - Don't use errno.h in zutil.h under WinCE [Yakimov] - Move arguments for AR to its usage to allow replacing ar [Marot] - Add HAVE_VISIBILITY_PRAGMA in zconf.in.h for Mozilla [Randers-Pehrson] - Improve inflateInit() and inflateInit2() documentation - Fix structure size comment in inflate.h - Change configure help option from --h* to --help [Santos] Changes in 1.2.3 (18 July 2005) - Apply security vulnerability fixes to contrib/infback9 as well - Clean up some text files (carriage returns, trailing space) - Update testzlib, vstudio, masmx64, and masmx86 in contrib [Vollant] Changes in 1.2.2.4 (11 July 2005) - Add inflatePrime() function for starting inflation at bit boundary - Avoid some Visual C warnings in deflate.c - Avoid more silly Visual C warnings in inflate.c and inftrees.c for 64-bit compile - Fix some spelling errors in comments [Betts] - Correct inflateInit2() error return documentation in zlib.h - Add zran.c example of compressed data random access to examples directory, shows use of inflatePrime() - Fix cast for assignments to strm->state in inflate.c and infback.c - Fix zlibCompileFlags() in zutil.c to use 1L for long shifts [Oberhumer] - Move declarations of gf2 functions to right place in crc32.c [Oberhumer] - Add cast in trees.c t avoid a warning [Oberhumer] - Avoid some warnings in fitblk.c, gun.c, gzjoin.c in examples [Oberhumer] - Update make_vms.com [Zinser] - Initialize state->write in inflateReset() since copied in inflate_fast() - Be more strict on incomplete code sets in inflate_table() and increase ENOUGH and MAXD -- this repairs a possible security vulnerability for invalid inflate input. Thanks to Tavis Ormandy and Markus Oberhumer for discovering the vulnerability and providing test cases. - Add ia64 support to configure for HP-UX [Smith] - Add error return to gzread() for format or i/o error [Levin] - Use malloc.h for OS/2 [Necasek] Changes in 1.2.2.3 (27 May 2005) - Replace 1U constants in inflate.c and inftrees.c for 64-bit compile - Typecast fread() return values in gzio.c [Vollant] - Remove trailing space in minigzip.c outmode (VC++ can't deal with it) - Fix crc check bug in gzread() after gzungetc() [Heiner] - Add the deflateTune() function to adjust internal compression parameters - Add a fast gzip decompressor, gun.c, to examples (use of inflateBack) - Remove an incorrect assertion in examples/zpipe.c - Add C++ wrapper in infback9.h [Donais] - Fix bug in inflateCopy() when decoding fixed codes - Note in zlib.h how much deflateSetDictionary() actually uses - Remove USE_DICT_HEAD in deflate.c (would mess up inflate if used) - Add _WIN32_WCE to define WIN32 in zconf.in.h [Spencer] - Don't include stderr.h or errno.h for _WIN32_WCE in zutil.h [Spencer] - Add gzdirect() function to indicate transparent reads - Update contrib/minizip [Vollant] - Fix compilation of deflate.c when both ASMV and FASTEST [Oberhumer] - Add casts in crc32.c to avoid warnings [Oberhumer] - Add contrib/masmx64 [Vollant] - Update contrib/asm586, asm686, masmx86, testzlib, vstudio [Vollant] Changes in 1.2.2.2 (30 December 2004) - Replace structure assignments in deflate.c and inflate.c with zmemcpy to avoid implicit memcpy calls (portability for no-library compilation) - Increase sprintf() buffer size in gzdopen() to allow for large numbers - Add INFLATE_STRICT to check distances against zlib header - Improve WinCE errno handling and comments [Chang] - Remove comment about no gzip header processing in FAQ - Add Z_FIXED strategy option to deflateInit2() to force fixed trees - Add updated make_vms.com [Coghlan], update README - Create a new "examples" directory, move gzappend.c there, add zpipe.c, fitblk.c, gzlog.[ch], gzjoin.c, and zlib_how.html. - Add FAQ entry and comments in deflate.c on uninitialized memory access - Add Solaris 9 make options in configure [Gilbert] - Allow strerror() usage in gzio.c for STDC - Fix DecompressBuf in contrib/delphi/ZLib.pas [ManChesTer] - Update contrib/masmx86/inffas32.asm and gvmat32.asm [Vollant] - Use z_off_t for adler32_combine() and crc32_combine() lengths - Make adler32() much faster for small len - Use OS_CODE in deflate() default gzip header Changes in 1.2.2.1 (31 October 2004) - Allow inflateSetDictionary() call for raw inflate - Fix inflate header crc check bug for file names and comments - Add deflateSetHeader() and gz_header structure for custom gzip headers - Add inflateGetheader() to retrieve gzip headers - Add crc32_combine() and adler32_combine() functions - Add alloc_func, free_func, in_func, out_func to Z_PREFIX list - Use zstreamp consistently in zlib.h (inflate_back functions) - Remove GUNZIP condition from definition of inflate_mode in inflate.h and in contrib/inflate86/inffast.S [Truta, Anderson] - Add support for AMD64 in contrib/inflate86/inffas86.c [Anderson] - Update projects/README.projects and projects/visualc6 [Truta] - Update win32/DLL_FAQ.txt [Truta] - Avoid warning under NO_GZCOMPRESS in gzio.c; fix typo [Truta] - Deprecate Z_ASCII; use Z_TEXT instead [Truta] - Use a new algorithm for setting strm->data_type in trees.c [Truta] - Do not define an exit() prototype in zutil.c unless DEBUG defined - Remove prototype of exit() from zutil.c, example.c, minigzip.c [Truta] - Add comment in zlib.h for Z_NO_FLUSH parameter to deflate() - Fix Darwin build version identification [Peterson] Changes in 1.2.2 (3 October 2004) - Update zlib.h comments on gzip in-memory processing - Set adler to 1 in inflateReset() to support Java test suite [Walles] - Add contrib/dotzlib [Ravn] - Update win32/DLL_FAQ.txt [Truta] - Update contrib/minizip [Vollant] - Move contrib/visual-basic.txt to old/ [Truta] - Fix assembler builds in projects/visualc6/ [Truta] Changes in 1.2.1.2 (9 September 2004) - Update INDEX file - Fix trees.c to update strm->data_type (no one ever noticed!) - Fix bug in error case in inflate.c, infback.c, and infback9.c [Brown] - Add "volatile" to crc table flag declaration (for DYNAMIC_CRC_TABLE) - Add limited multitasking protection to DYNAMIC_CRC_TABLE - Add NO_vsnprintf for VMS in zutil.h [Mozilla] - Don't declare strerror() under VMS [Mozilla] - Add comment to DYNAMIC_CRC_TABLE to use get_crc_table() to initialize - Update contrib/ada [Anisimkov] - Update contrib/minizip [Vollant] - Fix configure to not hardcode directories for Darwin [Peterson] - Fix gzio.c to not return error on empty files [Brown] - Fix indentation; update version in contrib/delphi/ZLib.pas and contrib/pascal/zlibpas.pas [Truta] - Update mkasm.bat in contrib/masmx86 [Truta] - Update contrib/untgz [Truta] - Add projects/README.projects [Truta] - Add project for MS Visual C++ 6.0 in projects/visualc6 [Cadieux, Truta] - Update win32/DLL_FAQ.txt [Truta] - Update list of Z_PREFIX symbols in zconf.h [Randers-Pehrson, Truta] - Remove an unnecessary assignment to curr in inftrees.c [Truta] - Add OS/2 to exe builds in configure [Poltorak] - Remove err dummy parameter in zlib.h [Kientzle] Changes in 1.2.1.1 (9 January 2004) - Update email address in README - Several FAQ updates - Fix a big fat bug in inftrees.c that prevented decoding valid dynamic blocks with only literals and no distance codes -- Thanks to "Hot Emu" for the bug report and sample file - Add a note to puff.c on no distance codes case. Changes in 1.2.1 (17 November 2003) - Remove a tab in contrib/gzappend/gzappend.c - Update some interfaces in contrib for new zlib functions - Update zlib version number in some contrib entries - Add Windows CE definition for ptrdiff_t in zutil.h [Mai, Truta] - Support shared libraries on Hurd and KFreeBSD [Brown] - Fix error in NO_DIVIDE option of adler32.c Changes in 1.2.0.8 (4 November 2003) - Update version in contrib/delphi/ZLib.pas and contrib/pascal/zlibpas.pas - Add experimental NO_DIVIDE #define in adler32.c - Possibly faster on some processors (let me know if it is) - Correct Z_BLOCK to not return on first inflate call if no wrap - Fix strm->data_type on inflate() return to correctly indicate EOB - Add deflatePrime() function for appending in the middle of a byte - Add contrib/gzappend for an example of appending to a stream - Update win32/DLL_FAQ.txt [Truta] - Delete Turbo C comment in README [Truta] - Improve some indentation in zconf.h [Truta] - Fix infinite loop on bad input in configure script [Church] - Fix gzeof() for concatenated gzip files [Johnson] - Add example to contrib/visual-basic.txt [Michael B.] - Add -p to mkdir's in Makefile.in [vda] - Fix configure to properly detect presence or lack of printf functions - Add AS400 support [Monnerat] - Add a little Cygwin support [Wilson] Changes in 1.2.0.7 (21 September 2003) - Correct some debug formats in contrib/infback9 - Cast a type in a debug statement in trees.c - Change search and replace delimiter in configure from % to # [Beebe] - Update contrib/untgz to 0.2 with various fixes [Truta] - Add build support for Amiga [Nikl] - Remove some directories in old that have been updated to 1.2 - Add dylib building for Mac OS X in configure and Makefile.in - Remove old distribution stuff from Makefile - Update README to point to DLL_FAQ.txt, and add comment on Mac OS X - Update links in README Changes in 1.2.0.6 (13 September 2003) - Minor FAQ updates - Update contrib/minizip to 1.00 [Vollant] - Remove test of gz functions in example.c when GZ_COMPRESS defined [Truta] - Update POSTINC comment for 68060 [Nikl] - Add contrib/infback9 with deflate64 decoding (unsupported) - For MVS define NO_vsnprintf and undefine FAR [van Burik] - Add pragma for fdopen on MVS [van Burik] Changes in 1.2.0.5 (8 September 2003) - Add OF to inflateBackEnd() declaration in zlib.h - Remember start when using gzdopen in the middle of a file - Use internal off_t counters in gz* functions to properly handle seeks - Perform more rigorous check for distance-too-far in inffast.c - Add Z_BLOCK flush option to return from inflate at block boundary - Set strm->data_type on return from inflate - Indicate bits unused, if at block boundary, and if in last block - Replace size_t with ptrdiff_t in crc32.c, and check for correct size - Add condition so old NO_DEFLATE define still works for compatibility - FAQ update regarding the Windows DLL [Truta] - INDEX update: add qnx entry, remove aix entry [Truta] - Install zlib.3 into mandir [Wilson] - Move contrib/zlib_dll_FAQ.txt to win32/DLL_FAQ.txt; update [Truta] - Adapt the zlib interface to the new DLL convention guidelines [Truta] - Introduce ZLIB_WINAPI macro to allow the export of functions using the WINAPI calling convention, for Visual Basic [Vollant, Truta] - Update msdos and win32 scripts and makefiles [Truta] - Export symbols by name, not by ordinal, in win32/zlib.def [Truta] - Add contrib/ada [Anisimkov] - Move asm files from contrib/vstudio/vc70_32 to contrib/asm386 [Truta] - Rename contrib/asm386 to contrib/masmx86 [Truta, Vollant] - Add contrib/masm686 [Truta] - Fix offsets in contrib/inflate86 and contrib/masmx86/inffas32.asm [Truta, Vollant] - Update contrib/delphi; rename to contrib/pascal; add example [Truta] - Remove contrib/delphi2; add a new contrib/delphi [Truta] - Avoid inclusion of the nonstandard <memory.h> in contrib/iostream, and fix some method prototypes [Truta] - Fix the ZCR_SEED2 constant to avoid warnings in contrib/minizip [Truta] - Avoid the use of backslash (\) in contrib/minizip [Vollant] - Fix file time handling in contrib/untgz; update makefiles [Truta] - Update contrib/vstudio/vc70_32 to comply with the new DLL guidelines [Vollant] - Remove contrib/vstudio/vc15_16 [Vollant] - Rename contrib/vstudio/vc70_32 to contrib/vstudio/vc7 [Truta] - Update README.contrib [Truta] - Invert the assignment order of match_head and s->prev[...] in INSERT_STRING [Truta] - Compare TOO_FAR with 32767 instead of 32768, to avoid 16-bit warnings [Truta] - Compare function pointers with 0, not with NULL or Z_NULL [Truta] - Fix prototype of syncsearch in inflate.c [Truta] - Introduce ASMINF macro to be enabled when using an ASM implementation of inflate_fast [Truta] - Change NO_DEFLATE to NO_GZCOMPRESS [Truta] - Modify test_gzio in example.c to take a single file name as a parameter [Truta] - Exit the example.c program if gzopen fails [Truta] - Add type casts around strlen in example.c [Truta] - Remove casting to sizeof in minigzip.c; give a proper type to the variable compared with SUFFIX_LEN [Truta] - Update definitions of STDC and STDC99 in zconf.h [Truta] - Synchronize zconf.h with the new Windows DLL interface [Truta] - Use SYS16BIT instead of __32BIT__ to distinguish between 16- and 32-bit platforms [Truta] - Use far memory allocators in small 16-bit memory models for Turbo C [Truta] - Add info about the use of ASMV, ASMINF and ZLIB_WINAPI in zlibCompileFlags [Truta] - Cygwin has vsnprintf [Wilson] - In Windows16, OS_CODE is 0, as in MSDOS [Truta] - In Cygwin, OS_CODE is 3 (Unix), not 11 (Windows32) [Wilson] Changes in 1.2.0.4 (10 August 2003) - Minor FAQ updates - Be more strict when checking inflateInit2's windowBits parameter - Change NO_GUNZIP compile option to NO_GZIP to cover deflate as well - Add gzip wrapper option to deflateInit2 using windowBits - Add updated QNX rule in configure and qnx directory [Bonnefoy] - Make inflate distance-too-far checks more rigorous - Clean up FAR usage in inflate - Add casting to sizeof() in gzio.c and minigzip.c Changes in 1.2.0.3 (19 July 2003) - Fix silly error in gzungetc() implementation [Vollant] - Update contrib/minizip and contrib/vstudio [Vollant] - Fix printf format in example.c - Correct cdecl support in zconf.in.h [Anisimkov] - Minor FAQ updates Changes in 1.2.0.2 (13 July 2003) - Add ZLIB_VERNUM in zlib.h for numerical preprocessor comparisons - Attempt to avoid warnings in crc32.c for pointer-int conversion - Add AIX to configure, remove aix directory [Bakker] - Add some casts to minigzip.c - Improve checking after insecure sprintf() or vsprintf() calls - Remove #elif's from crc32.c - Change leave label to inf_leave in inflate.c and infback.c to avoid library conflicts - Remove inflate gzip decoding by default--only enable gzip decoding by special request for stricter backward compatibility - Add zlibCompileFlags() function to return compilation information - More typecasting in deflate.c to avoid warnings - Remove leading underscore from _Capital #defines [Truta] - Fix configure to link shared library when testing - Add some Windows CE target adjustments [Mai] - Remove #define ZLIB_DLL in zconf.h [Vollant] - Add zlib.3 [Rodgers] - Update RFC URL in deflate.c and algorithm.txt [Mai] - Add zlib_dll_FAQ.txt to contrib [Truta] - Add UL to some constants [Truta] - Update minizip and vstudio [Vollant] - Remove vestigial NEED_DUMMY_RETURN from zconf.in.h - Expand use of NO_DUMMY_DECL to avoid all dummy structures - Added iostream3 to contrib [Schwardt] - Replace rewind() with fseek() for WinCE [Truta] - Improve setting of zlib format compression level flags - Report 0 for huffman and rle strategies and for level == 0 or 1 - Report 2 only for level == 6 - Only deal with 64K limit when necessary at compile time [Truta] - Allow TOO_FAR check to be turned off at compile time [Truta] - Add gzclearerr() function [Souza] - Add gzungetc() function Changes in 1.2.0.1 (17 March 2003) - Add Z_RLE strategy for run-length encoding [Truta] - When Z_RLE requested, restrict matches to distance one - Update zlib.h, minigzip.c, gzopen(), gzdopen() for Z_RLE - Correct FASTEST compilation to allow level == 0 - Clean up what gets compiled for FASTEST - Incorporate changes to zconf.in.h [Vollant] - Refine detection of Turbo C need for dummy returns - Refine ZLIB_DLL compilation - Include additional header file on VMS for off_t typedef - Try to use _vsnprintf where it supplants vsprintf [Vollant] - Add some casts in inffast.c - Enchance comments in zlib.h on what happens if gzprintf() tries to write more than 4095 bytes before compression - Remove unused state from inflateBackEnd() - Remove exit(0) from minigzip.c, example.c - Get rid of all those darn tabs - Add "check" target to Makefile.in that does the same thing as "test" - Add "mostlyclean" and "maintainer-clean" targets to Makefile.in - Update contrib/inflate86 [Anderson] - Update contrib/testzlib, contrib/vstudio, contrib/minizip [Vollant] - Add msdos and win32 directories with makefiles [Truta] - More additions and improvements to the FAQ Changes in 1.2.0 (9 March 2003) - New and improved inflate code - About 20% faster - Does not allocate 32K window unless and until needed - Automatically detects and decompresses gzip streams - Raw inflate no longer needs an extra dummy byte at end - Added inflateBack functions using a callback interface--even faster than inflate, useful for file utilities (gzip, zip) - Added inflateCopy() function to record state for random access on externally generated deflate streams (e.g. in gzip files) - More readable code (I hope) - New and improved crc32() - About 50% faster, thanks to suggestions from Rodney Brown - Add deflateBound() and compressBound() functions - Fix memory leak in deflateInit2() - Permit setting dictionary for raw deflate (for parallel deflate) - Fix const declaration for gzwrite() - Check for some malloc() failures in gzio.c - Fix bug in gzopen() on single-byte file 0x1f - Fix bug in gzread() on concatenated file with 0x1f at end of buffer and next buffer doesn't start with 0x8b - Fix uncompress() to return Z_DATA_ERROR on truncated input - Free memory at end of example.c - Remove MAX #define in trees.c (conflicted with some libraries) - Fix static const's in deflate.c, gzio.c, and zutil.[ch] - Declare malloc() and free() in gzio.c if STDC not defined - Use malloc() instead of calloc() in zutil.c if int big enough - Define STDC for AIX - Add aix/ with approach for compiling shared library on AIX - Add HP-UX support for shared libraries in configure - Add OpenUNIX support for shared libraries in configure - Use $cc instead of gcc to build shared library - Make prefix directory if needed when installing - Correct Macintosh avoidance of typedef Byte in zconf.h - Correct Turbo C memory allocation when under Linux - Use libz.a instead of -lz in Makefile (assure use of compiled library) - Update configure to check for snprintf or vsnprintf functions and their return value, warn during make if using an insecure function - Fix configure problem with compile-time knowledge of HAVE_UNISTD_H that is lost when library is used--resolution is to build new zconf.h - Documentation improvements (in zlib.h): - Document raw deflate and inflate - Update RFCs URL - Point out that zlib and gzip formats are different - Note that Z_BUF_ERROR is not fatal - Document string limit for gzprintf() and possible buffer overflow - Note requirement on avail_out when flushing - Note permitted values of flush parameter of inflate() - Add some FAQs (and even answers) to the FAQ - Add contrib/inflate86/ for x86 faster inflate - Add contrib/blast/ for PKWare Data Compression Library decompression - Add contrib/puff/ simple inflate for deflate format description Changes in 1.1.4 (11 March 2002) - ZFREE was repeated on same allocation on some error conditions. This creates a security problem described in http://www.zlib.org/advisory-2002-03-11.txt - Returned incorrect error (Z_MEM_ERROR) on some invalid data - Avoid accesses before window for invalid distances with inflate window less than 32K. - force windowBits > 8 to avoid a bug in the encoder for a window size of 256 bytes. (A complete fix will be available in 1.1.5). Changes in 1.1.3 (9 July 1998) - fix "an inflate input buffer bug that shows up on rare but persistent occasions" (Mark) - fix gzread and gztell for concatenated .gz files (Didier Le Botlan) - fix gzseek(..., SEEK_SET) in write mode - fix crc check after a gzeek (Frank Faubert) - fix miniunzip when the last entry in a zip file is itself a zip file (J Lillge) - add contrib/asm586 and contrib/asm686 (Brian Raiter) See http://www.muppetlabs.com/~breadbox/software/assembly.html - add support for Delphi 3 in contrib/delphi (Bob Dellaca) - add support for C++Builder 3 and Delphi 3 in contrib/delphi2 (Davide Moretti) - do not exit prematurely in untgz if 0 at start of block (Magnus Holmgren) - use macro EXTERN instead of extern to support DLL for BeOS (Sander Stoks) - added a FAQ file - Support gzdopen on Mac with Metrowerks (Jason Linhart) - Do not redefine Byte on Mac (Brad Pettit & Jason Linhart) - define SEEK_END too if SEEK_SET is not defined (Albert Chin-A-Young) - avoid some warnings with Borland C (Tom Tanner) - fix a problem in contrib/minizip/zip.c for 16-bit MSDOS (Gilles Vollant) - emulate utime() for WIN32 in contrib/untgz (Gilles Vollant) - allow several arguments to configure (Tim Mooney, Frodo Looijaard) - use libdir and includedir in Makefile.in (Tim Mooney) - support shared libraries on OSF1 V4 (Tim Mooney) - remove so_locations in "make clean" (Tim Mooney) - fix maketree.c compilation error (Glenn, Mark) - Python interface to zlib now in Python 1.5 (Jeremy Hylton) - new Makefile.riscos (Rich Walker) - initialize static descriptors in trees.c for embedded targets (Nick Smith) - use "foo-gz" in example.c for RISCOS and VMS (Nick Smith) - add the OS/2 files in Makefile.in too (Andrew Zabolotny) - fix fdopen and halloc macros for Microsoft C 6.0 (Tom Lane) - fix maketree.c to allow clean compilation of inffixed.h (Mark) - fix parameter check in deflateCopy (Gunther Nikl) - cleanup trees.c, use compressed_len only in debug mode (Christian Spieler) - Many portability patches by Christian Spieler: . zutil.c, zutil.h: added "const" for zmem* . Make_vms.com: fixed some typos . Make_vms.com: msdos/Makefile.*: removed zutil.h from some dependency lists . msdos/Makefile.msc: remove "default rtl link library" info from obj files . msdos/Makefile.*: use model-dependent name for the built zlib library . msdos/Makefile.emx, nt/Makefile.emx, nt/Makefile.gcc: new makefiles, for emx (DOS/OS2), emx&rsxnt and mingw32 (Windows 9x / NT) - use define instead of typedef for Bytef also for MSC small/medium (Tom Lane) - replace __far with _far for better portability (Christian Spieler, Tom Lane) - fix test for errno.h in configure (Tim Newsham) Changes in 1.1.2 (19 March 98) - added contrib/minzip, mini zip and unzip based on zlib (Gilles Vollant) See http://www.winimage.com/zLibDll/unzip.html - preinitialize the inflate tables for fixed codes, to make the code completely thread safe (Mark) - some simplifications and slight speed-up to the inflate code (Mark) - fix gzeof on non-compressed files (Allan Schrum) - add -std1 option in configure for OSF1 to fix gzprintf (Martin Mokrejs) - use default value of 4K for Z_BUFSIZE for 16-bit MSDOS (Tim Wegner + Glenn) - added os2/Makefile.def and os2/zlib.def (Andrew Zabolotny) - add shared lib support for UNIX_SV4.2MP (MATSUURA Takanori) - do not wrap extern "C" around system includes (Tom Lane) - mention zlib binding for TCL in README (Andreas Kupries) - added amiga/Makefile.pup for Amiga powerUP SAS/C PPC (Andreas Kleinert) - allow "make install prefix=..." even after configure (Glenn Randers-Pehrson) - allow "configure --prefix $HOME" (Tim Mooney) - remove warnings in example.c and gzio.c (Glenn Randers-Pehrson) - move Makefile.sas to amiga/Makefile.sas Changes in 1.1.1 (27 Feb 98) - fix macros _tr_tally_* in deflate.h for debug mode (Glenn Randers-Pehrson) - remove block truncation heuristic which had very marginal effect for zlib (smaller lit_bufsize than in gzip 1.2.4) and degraded a little the compression ratio on some files. This also allows inlining _tr_tally for matches in deflate_slow. - added msdos/Makefile.w32 for WIN32 Microsoft Visual C++ (Bob Frazier) Changes in 1.1.0 (24 Feb 98) - do not return STREAM_END prematurely in inflate (John Bowler) - revert to the zlib 1.0.8 inflate to avoid the gcc 2.8.0 bug (Jeremy Buhler) - compile with -DFASTEST to get compression code optimized for speed only - in minigzip, try mmap'ing the input file first (Miguel Albrecht) - increase size of I/O buffers in minigzip.c and gzio.c (not a big gain on Sun but significant on HP) - add a pointer to experimental unzip library in README (Gilles Vollant) - initialize variable gcc in configure (Chris Herborth) Changes in 1.0.9 (17 Feb 1998) - added gzputs and gzgets functions - do not clear eof flag in gzseek (Mark Diekhans) - fix gzseek for files in transparent mode (Mark Diekhans) - do not assume that vsprintf returns the number of bytes written (Jens Krinke) - replace EXPORT with ZEXPORT to avoid conflict with other programs - added compress2 in zconf.h, zlib.def, zlib.dnt - new asm code from Gilles Vollant in contrib/asm386 - simplify the inflate code (Mark): . Replace ZALLOC's in huft_build() with single ZALLOC in inflate_blocks_new() . ZALLOC the length list in inflate_trees_fixed() instead of using stack . ZALLOC the value area for huft_build() instead of using stack . Simplify Z_FINISH check in inflate() - Avoid gcc 2.8.0 comparison bug a little differently than zlib 1.0.8 - in inftrees.c, avoid cc -O bug on HP (Farshid Elahi) - in zconf.h move the ZLIB_DLL stuff earlier to avoid problems with the declaration of FAR (Gilles VOllant) - install libz.so* with mode 755 (executable) instead of 644 (Marc Lehmann) - read_buf buf parameter of type Bytef* instead of charf* - zmemcpy parameters are of type Bytef*, not charf* (Joseph Strout) - do not redeclare unlink in minigzip.c for WIN32 (John Bowler) - fix check for presence of directories in "make install" (Ian Willis) Changes in 1.0.8 (27 Jan 1998) - fixed offsets in contrib/asm386/gvmat32.asm (Gilles Vollant) - fix gzgetc and gzputc for big endian systems (Markus Oberhumer) - added compress2() to allow setting the compression level - include sys/types.h to get off_t on some systems (Marc Lehmann & QingLong) - use constant arrays for the static trees in trees.c instead of computing them at run time (thanks to Ken Raeburn for this suggestion). To create trees.h, compile with GEN_TREES_H and run "make test". - check return code of example in "make test" and display result - pass minigzip command line options to file_compress - simplifying code of inflateSync to avoid gcc 2.8 bug - support CC="gcc -Wall" in configure -s (QingLong) - avoid a flush caused by ftell in gzopen for write mode (Ken Raeburn) - fix test for shared library support to avoid compiler warnings - zlib.lib -> zlib.dll in msdos/zlib.rc (Gilles Vollant) - check for TARGET_OS_MAC in addition to MACOS (Brad Pettit) - do not use fdopen for Metrowerks on Mac (Brad Pettit)) - add checks for gzputc and gzputc in example.c - avoid warnings in gzio.c and deflate.c (Andreas Kleinert) - use const for the CRC table (Ken Raeburn) - fixed "make uninstall" for shared libraries - use Tracev instead of Trace in infblock.c - in example.c use correct compressed length for test_sync - suppress +vnocompatwarnings in configure for HPUX (not always supported) Changes in 1.0.7 (20 Jan 1998) - fix gzseek which was broken in write mode - return error for gzseek to negative absolute position - fix configure for Linux (Chun-Chung Chen) - increase stack space for MSC (Tim Wegner) - get_crc_table and inflateSyncPoint are EXPORTed (Gilles Vollant) - define EXPORTVA for gzprintf (Gilles Vollant) - added man page zlib.3 (Rick Rodgers) - for contrib/untgz, fix makedir() and improve Makefile - check gzseek in write mode in example.c - allocate extra buffer for seeks only if gzseek is actually called - avoid signed/unsigned comparisons (Tim Wegner, Gilles Vollant) - add inflateSyncPoint in zconf.h - fix list of exported functions in nt/zlib.dnt and mdsos/zlib.def Changes in 1.0.6 (19 Jan 1998) - add functions gzprintf, gzputc, gzgetc, gztell, gzeof, gzseek, gzrewind and gzsetparams (thanks to Roland Giersig and Kevin Ruland for some of this code) - Fix a deflate bug occurring only with compression level 0 (thanks to Andy Buckler for finding this one). - In minigzip, pass transparently also the first byte for .Z files. - return Z_BUF_ERROR instead of Z_OK if output buffer full in uncompress() - check Z_FINISH in inflate (thanks to Marc Schluper) - Implement deflateCopy (thanks to Adam Costello) - make static libraries by default in configure, add --shared option. - move MSDOS or Windows specific files to directory msdos - suppress the notion of partial flush to simplify the interface (but the symbol Z_PARTIAL_FLUSH is kept for compatibility with 1.0.4) - suppress history buffer provided by application to simplify the interface (this feature was not implemented anyway in 1.0.4) - next_in and avail_in must be initialized before calling inflateInit or inflateInit2 - add EXPORT in all exported functions (for Windows DLL) - added Makefile.nt (thanks to Stephen Williams) - added the unsupported "contrib" directory: contrib/asm386/ by Gilles Vollant <info@winimage.com> 386 asm code replacing longest_match(). contrib/iostream/ by Kevin Ruland <kevin@rodin.wustl.edu> A C++ I/O streams interface to the zlib gz* functions contrib/iostream2/ by Tyge Løvset <Tyge.Lovset@cmr.no> Another C++ I/O streams interface contrib/untgz/ by "Pedro A. Aranda Guti\irrez" <paag@tid.es> A very simple tar.gz file extractor using zlib contrib/visual-basic.txt by Carlos Rios <c_rios@sonda.cl> How to use compress(), uncompress() and the gz* functions from VB. - pass params -f (filtered data), -h (huffman only), -1 to -9 (compression level) in minigzip (thanks to Tom Lane) - use const for rommable constants in deflate - added test for gzseek and gztell in example.c - add undocumented function inflateSyncPoint() (hack for Paul Mackerras) - add undocumented function zError to convert error code to string (for Tim Smithers) - Allow compilation of gzio with -DNO_DEFLATE to avoid the compression code. - Use default memcpy for Symantec MSDOS compiler. - Add EXPORT keyword for check_func (needed for Windows DLL) - add current directory to LD_LIBRARY_PATH for "make test" - create also a link for libz.so.1 - added support for FUJITSU UXP/DS (thanks to Toshiaki Nomura) - use $(SHAREDLIB) instead of libz.so in Makefile.in (for HPUX) - added -soname for Linux in configure (Chun-Chung Chen, - assign numbers to the exported functions in zlib.def (for Windows DLL) - add advice in zlib.h for best usage of deflateSetDictionary - work around compiler bug on Atari (cast Z_NULL in call of s->checkfn) - allow compilation with ANSI keywords only enabled for TurboC in large model - avoid "versionString"[0] (Borland bug) - add NEED_DUMMY_RETURN for Borland - use variable z_verbose for tracing in debug mode (L. Peter Deutsch). - allow compilation with CC - defined STDC for OS/2 (David Charlap) - limit external names to 8 chars for MVS (Thomas Lund) - in minigzip.c, use static buffers only for 16-bit systems - fix suffix check for "minigzip -d foo.gz" - do not return an error for the 2nd of two consecutive gzflush() (Felix Lee) - use _fdopen instead of fdopen for MSC >= 6.0 (Thomas Fanslau) - added makelcc.bat for lcc-win32 (Tom St Denis) - in Makefile.dj2, use copy and del instead of install and rm (Frank Donahoe) - Avoid expanded $Id$. Use "rcs -kb" or "cvs admin -kb" to avoid Id expansion. - check for unistd.h in configure (for off_t) - remove useless check parameter in inflate_blocks_free - avoid useless assignment of s->check to itself in inflate_blocks_new - do not flush twice in gzclose (thanks to Ken Raeburn) - rename FOPEN as F_OPEN to avoid clash with /usr/include/sys/file.h - use NO_ERRNO_H instead of enumeration of operating systems with errno.h - work around buggy fclose on pipes for HP/UX - support zlib DLL with BORLAND C++ 5.0 (thanks to Glenn Randers-Pehrson) - fix configure if CC is already equal to gcc Changes in 1.0.5 (3 Jan 98) - Fix inflate to terminate gracefully when fed corrupted or invalid data - Use const for rommable constants in inflate - Eliminate memory leaks on error conditions in inflate - Removed some vestigial code in inflate - Update web address in README Changes in 1.0.4 (24 Jul 96) - In very rare conditions, deflate(s, Z_FINISH) could fail to produce an EOF bit, so the decompressor could decompress all the correct data but went on to attempt decompressing extra garbage data. This affected minigzip too. - zlibVersion and gzerror return const char* (needed for DLL) - port to RISCOS (no fdopen, no multiple dots, no unlink, no fileno) - use z_error only for DEBUG (avoid problem with DLLs) Changes in 1.0.3 (2 Jul 96) - use z_streamp instead of z_stream *, which is now a far pointer in MSDOS small and medium models; this makes the library incompatible with previous versions for these models. (No effect in large model or on other systems.) - return OK instead of BUF_ERROR if previous deflate call returned with avail_out as zero but there is nothing to do - added memcmp for non STDC compilers - define NO_DUMMY_DECL for more Mac compilers (.h files merged incorrectly) - define __32BIT__ if __386__ or i386 is defined (pb. with Watcom and SCO) - better check for 16-bit mode MSC (avoids problem with Symantec) Changes in 1.0.2 (23 May 96) - added Windows DLL support - added a function zlibVersion (for the DLL support) - fixed declarations using Bytef in infutil.c (pb with MSDOS medium model) - Bytef is define's instead of typedef'd only for Borland C - avoid reading uninitialized memory in example.c - mention in README that the zlib format is now RFC1950 - updated Makefile.dj2 - added algorithm.doc Changes in 1.0.1 (20 May 96) [1.0 skipped to avoid confusion] - fix array overlay in deflate.c which sometimes caused bad compressed data - fix inflate bug with empty stored block - fix MSDOS medium model which was broken in 0.99 - fix deflateParams() which could generated bad compressed data. - Bytef is define'd instead of typedef'ed (work around Borland bug) - added an INDEX file - new makefiles for DJGPP (Makefile.dj2), 32-bit Borland (Makefile.b32), Watcom (Makefile.wat), Amiga SAS/C (Makefile.sas) - speed up adler32 for modern machines without auto-increment - added -ansi for IRIX in configure - static_init_done in trees.c is an int - define unlink as delete for VMS - fix configure for QNX - add configure branch for SCO and HPUX - avoid many warnings (unused variables, dead assignments, etc...) - no fdopen for BeOS - fix the Watcom fix for 32 bit mode (define FAR as empty) - removed redefinition of Byte for MKWERKS - work around an MWKERKS bug (incorrect merge of all .h files) Changes in 0.99 (27 Jan 96) - allow preset dictionary shared between compressor and decompressor - allow compression level 0 (no compression) - add deflateParams in zlib.h: allow dynamic change of compression level and compression strategy. - test large buffers and deflateParams in example.c - add optional "configure" to build zlib as a shared library - suppress Makefile.qnx, use configure instead - fixed deflate for 64-bit systems (detected on Cray) - fixed inflate_blocks for 64-bit systems (detected on Alpha) - declare Z_DEFLATED in zlib.h (possible parameter for deflateInit2) - always return Z_BUF_ERROR when deflate() has nothing to do - deflateInit and inflateInit are now macros to allow version checking - prefix all global functions and types with z_ with -DZ_PREFIX - make falloc completely reentrant (inftrees.c) - fixed very unlikely race condition in ct_static_init - free in reverse order of allocation to help memory manager - use zlib-1.0/* instead of zlib/* inside the tar.gz - make zlib warning-free with "gcc -O3 -Wall -Wwrite-strings -Wpointer-arith -Wconversion -Wstrict-prototypes -Wmissing-prototypes" - allow gzread on concatenated .gz files - deflateEnd now returns Z_DATA_ERROR if it was premature - deflate is finally (?) fully deterministic (no matches beyond end of input) - Document Z_SYNC_FLUSH - add uninstall in Makefile - Check for __cpluplus in zlib.h - Better test in ct_align for partial flush - avoid harmless warnings for Borland C++ - initialize hash_head in deflate.c - avoid warning on fdopen (gzio.c) for HP cc -Aa - include stdlib.h for STDC compilers - include errno.h for Cray - ignore error if ranlib doesn't exist - call ranlib twice for NeXTSTEP - use exec_prefix instead of prefix for libz.a - renamed ct_* as _tr_* to avoid conflict with applications - clear z->msg in inflateInit2 before any error return - initialize opaque in example.c, gzio.c, deflate.c and inflate.c - fixed typo in zconf.h (_GNUC__ => __GNUC__) - check for WIN32 in zconf.h and zutil.c (avoid farmalloc in 32-bit mode) - fix typo in Make_vms.com (f$trnlnm -> f$getsyi) - in fcalloc, normalize pointer if size > 65520 bytes - don't use special fcalloc for 32 bit Borland C++ - use STDC instead of __GO32__ to avoid redeclaring exit, calloc, etc... - use Z_BINARY instead of BINARY - document that gzclose after gzdopen will close the file - allow "a" as mode in gzopen. - fix error checking in gzread - allow skipping .gz extra-field on pipes - added reference to Perl interface in README - put the crc table in FAR data (I dislike more and more the medium model :) - added get_crc_table - added a dimension to all arrays (Borland C can't count). - workaround Borland C bug in declaration of inflate_codes_new & inflate_fast - guard against multiple inclusion of *.h (for precompiled header on Mac) - Watcom C pretends to be Microsoft C small model even in 32 bit mode. - don't use unsized arrays to avoid silly warnings by Visual C++: warning C4746: 'inflate_mask' : unsized array treated as '__far' (what's wrong with far data in far model?). - define enum out of inflate_blocks_state to allow compilation with C++ Changes in 0.95 (16 Aug 95) - fix MSDOS small and medium model (now easier to adapt to any compiler) - inlined send_bits - fix the final (:-) bug for deflate with flush (output was correct but not completely flushed in rare occasions). - default window size is same for compression and decompression (it's now sufficient to set MAX_WBITS in zconf.h). - voidp -> voidpf and voidnp -> voidp (for consistency with other typedefs and because voidnp was not near in large model). Changes in 0.94 (13 Aug 95) - support MSDOS medium model - fix deflate with flush (could sometimes generate bad output) - fix deflateReset (zlib header was incorrectly suppressed) - added support for VMS - allow a compression level in gzopen() - gzflush now calls fflush - For deflate with flush, flush even if no more input is provided. - rename libgz.a as libz.a - avoid complex expression in infcodes.c triggering Turbo C bug - work around a problem with gcc on Alpha (in INSERT_STRING) - don't use inline functions (problem with some gcc versions) - allow renaming of Byte, uInt, etc... with #define. - avoid warning about (unused) pointer before start of array in deflate.c - avoid various warnings in gzio.c, example.c, infblock.c, adler32.c, zutil.c - avoid reserved word 'new' in trees.c Changes in 0.93 (25 June 95) - temporarily disable inline functions - make deflate deterministic - give enough lookahead for PARTIAL_FLUSH - Set binary mode for stdin/stdout in minigzip.c for OS/2 - don't even use signed char in inflate (not portable enough) - fix inflate memory leak for segmented architectures Changes in 0.92 (3 May 95) - don't assume that char is signed (problem on SGI) - Clear bit buffer when starting a stored block - no memcpy on Pyramid - suppressed inftest.c - optimized fill_window, put longest_match inline for gcc - optimized inflate on stored blocks. - untabify all sources to simplify patches Changes in 0.91 (2 May 95) - Default MEM_LEVEL is 8 (not 9 for Unix) as documented in zlib.h - Document the memory requirements in zconf.h - added "make install" - fix sync search logic in inflateSync - deflate(Z_FULL_FLUSH) now works even if output buffer too short - after inflateSync, don't scare people with just "lo world" - added support for DJGPP Changes in 0.9 (1 May 95) - don't assume that zalloc clears the allocated memory (the TurboC bug was Mark's bug after all :) - let again gzread copy uncompressed data unchanged (was working in 0.71) - deflate(Z_FULL_FLUSH), inflateReset and inflateSync are now fully implemented - added a test of inflateSync in example.c - moved MAX_WBITS to zconf.h because users might want to change that. - document explicitly that zalloc(64K) on MSDOS must return a normalized pointer (zero offset) - added Makefiles for Microsoft C, Turbo C, Borland C++ - faster crc32() Changes in 0.8 (29 April 95) - added fast inflate (inffast.c) - deflate(Z_FINISH) now returns Z_STREAM_END when done. Warning: this is incompatible with previous versions of zlib which returned Z_OK. - work around a TurboC compiler bug (bad code for b << 0, see infutil.h) (actually that was not a compiler bug, see 0.81 above) - gzread no longer reads one extra byte in certain cases - In gzio destroy(), don't reference a freed structure - avoid many warnings for MSDOS - avoid the ERROR symbol which is used by MS Windows Changes in 0.71 (14 April 95) - Fixed more MSDOS compilation problems :( There is still a bug with TurboC large model. Changes in 0.7 (14 April 95) - Added full inflate support. - Simplified the crc32() interface. The pre- and post-conditioning (one's complement) is now done inside crc32(). WARNING: this is incompatible with previous versions; see zlib.h for the new usage. Changes in 0.61 (12 April 95) - workaround for a bug in TurboC. example and minigzip now work on MSDOS. Changes in 0.6 (11 April 95) - added minigzip.c - added gzdopen to reopen a file descriptor as gzFile - added transparent reading of non-gziped files in gzread. - fixed bug in gzread (don't read crc as data) - fixed bug in destroy (gzio.c) (don't return Z_STREAM_END for gzclose). - don't allocate big arrays in the stack (for MSDOS) - fix some MSDOS compilation problems Changes in 0.5: - do real compression in deflate.c. Z_PARTIAL_FLUSH is supported but not yet Z_FULL_FLUSH. - support decompression but only in a single step (forced Z_FINISH) - added opaque object for zalloc and zfree. - added deflateReset and inflateReset - added a variable zlib_version for consistency checking. - renamed the 'filter' parameter of deflateInit2 as 'strategy'. Added Z_FILTERED and Z_HUFFMAN_ONLY constants. Changes in 0.4: - avoid "zip" everywhere, use zlib instead of ziplib. - suppress Z_BLOCK_FLUSH, interpret Z_PARTIAL_FLUSH as block flush if compression method == 8. - added adler32 and crc32 - renamed deflateOptions as deflateInit2, call one or the other but not both - added the method parameter for deflateInit2. - added inflateInit2 - simplied considerably deflateInit and inflateInit by not supporting user-provided history buffer. This is supported only in deflateInit2 and inflateInit2. Changes in 0.3: - prefix all macro names with Z_ - use Z_FINISH instead of deflateEnd to finish compression. - added Z_HUFFMAN_ONLY - added gzerror() |