* Noteworthy changes in release ?.? (????-??-??) [?]
+** Bug fixes
+
+ When converting timestamps to gzip file format (32-bit unsigned) or
+ to time_t format (system-dependent), gzip now ignores out-of-range
+ values instead of shoehorning them into the destination format,
+ sometimes with undefined behavior. This affects timestamps before
+ 1970 and after 2106, and timestamps after 2038 on platforms with
+ 32-bit signed time_t. [bug present since the beginning]
+
+ Support for VMS and Amiga has been removed. It was not working anyway,
+ and it reportedly caused file name glitches on MS-Windowsish platforms.
+
+
+* Noteworthy changes in release 1.8 (2016-04-26) [stable]
+
+** Bug fixes
+
+ gzip -l no longer falsely reports a write error when writing to a pipe.
+ [bug introduced in gzip-1.7]
+
+ Port to Oracle Solaris Studio 12 on x86-64.
+ [bug present since at least gzip-1.2.4]
+
+ When configuring gzip, ./configure DEFS='...-DNO_ASM...' now
+ suppresses assembler again. [bug introduced in gzip-1.3.5]
+
+
+* Noteworthy changes in release 1.7 (2016-03-27) [stable]
+
** Changes in behavior
The GZIP environment variable is now obsolescent; gzip now warns if
it is used, and rejects attempts to use dangerous options or operands.
You can use an alias or script instead.
+ Installed programs like 'zgrep' now use the PATH environment variable
+ as usual to find subsidiary programs like 'gzip' and 'grep'.
+ Previously they prepended the installation directory to the PATH,
+ which sometimes caused 'make check' to test the wrong gzip executable.
+ [bug introduced in gzip-1.3.13]
+
+** New features
+
+ gzip now accepts the --synchronous option, which causes it to use
+ fsync and similar primitives to transfer output data to the output
+ file's storage device when the file system supports this. Although
+ this option makes gzip safer in the presence of system crashes, it
+ can make gzip considerably slower.
+
+ gzip now accepts the --rsyncable option. This option is accepted in
+ all modes, but has effect only when compressing: it makes the resulting
+ output more amenable to efficient use of rsync. For example, when a
+ large input file gets a small change, a gzip --rsyncable image of
+ that file will remain largely unchanged, too. Without --rsyncable,
+ even a tiny change in the input could result in a totally different
+ gzip-compressed output file.
+
** Bug fixes
gzip -k -v no longer reports that files are replaced.
[bug present since the beginning]
+ zgrep -f A B C no longer reads A more than once if A is not a regular file.
+ This better supports invocations like 'zgrep -f <(COMMAND) B C' in Bash.
+ [bug introduced in gzip-1.2]
+
* Noteworthy changes in release 1.6 (2013-06-09) [stable]
gzip -d could segfault and/or clobber the stack, possibly leading to
arbitrary code execution. This affects x86_64 but not 32-bit systems.
This fixes CVE-2010-0001.
- For more details, see http://bugzilla.redhat.com/554418
+ For more details, see https://bugzilla.redhat.com/554418
gzip -d would fail with a CRC error for some valid inputs.
So far, the only valid input known to exhibit this failure was
Major changes in Gzip 1.3.6 (2006-11-20)
-* Fix some race conditions in setting file time stamps, permissions, and owner.
+* Fix some race conditions in setting file timestamps, permissions, and owner.
* Fix some race conditions in signal handling.
* When gzip exits due to a signal, it exits with the signal's status, not 1.
-* gzip now restores file time stamps to the resolution supported by the
+* gzip now restores file timestamps to the resolution supported by the
time-setting primitives of the operating system, typically 1 microsecond.
Formerly it restored them only to the nearest second.
* gzip -r no longer attempts to reset the last-access times of directories
* Added comparison of zip and gzip in the readme file.
* Added small sample programs (ztouch, sub, add)
* Use less memory when compiled with -DSMALL_MEM (for MSDOS).
-* Remove the "off by more than one minute" time stamp kludge
+* Remove the "off by more than one minute" timestamp kludge
Major changes from 1.0.6 to 1.0.7.
* Allow zmore to read from standard input (like more).
on such systems.
* Added gzexe to compress rarely used executables.
* Reduce memory usage (required for MSDOS and useful on all systems).
-* Preserve time stamp in znew -P (pipe option) if touch -r works.
+* Preserve timestamp in znew -P (pipe option) if touch -r works.
Major changes from 1.0 to 1.0.1
Major changes from 0.6 to 0.7:
* Use "make check" instead of "make test".
-* Keep time stamp and pass options to gzip in znew.
+* Keep timestamp and pass options to gzip in znew.
* Do not create .z.z files with gzip -r.
* Allow again gunzip .zip files (was working in 0.5)
* Allow again compilation with TurboC 2.0 (was working in 0.4)
========================================================================
-Copyright (C) 1999, 2001-2002, 2006-2007, 2009-2015 Free Software Foundation,
+Copyright (C) 1999, 2001-2002, 2006-2007, 2009-2017 Free Software Foundation,
Inc.
Copyright (C) 1992, 1993 Jean-loup Gailly