Add NEWS for 5.2.7.

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Lasse Collin 2022-09-30 16:40:39 +03:00
parent 369afb5199
commit d2003362dd
1 changed files with 74 additions and 0 deletions

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NEWS
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XZ Utils Release Notes
======================
5.2.7 (2022-09-30)
* liblzma:
- Made lzma_filters_copy() to never modify the destination
array if an error occurs. lzma_stream_encoder() and
lzma_stream_encoder_mt() already assumed this. Before this
change, if a tiny memory allocation in lzma_filters_copy()
failed it would lead to a crash (invalid free() or invalid
memory reads) in the cleanup paths of these two encoder
initialization functions.
- Added missing integer overflow check to lzma_index_append().
This affects xz --list and other applications that decode
the Index field from .xz files using lzma_index_decoder().
Normal decompression of .xz files doesn't call this code
and thus most applications using liblzma aren't affected
by this bug.
- Single-threaded .xz decoder (lzma_stream_decoder()): If
lzma_code() returns LZMA_MEMLIMIT_ERROR it is now possible
to use lzma_memlimit_set() to increase the limit and continue
decoding. This was supposed to work from the beginning
but there was a bug. With other decoders (.lzma or
threaded .xz decoder) this already worked correctly.
- Fixed accumulation of integrity check type statistics in
lzma_index_cat(). This bug made lzma_index_checks() return
only the type of the integrity check of the last Stream
when multiple lzma_indexes were concatenated. Most
applications don't use these APIs but in xz it made
xz --list not list all check types from concatenated .xz
files. In xz --list --verbose only the per-file "Check:"
lines were affected and in xz --robot --list only the "file"
line was affected.
- Added ABI compatibility with executables that were linked
against liblzma in RHEL/CentOS 7 or other liblzma builds
that had copied the problematic patch from RHEL/CentOS 7
(xz-5.2.2-compat-libs.patch). For the details, see the
comment at the top of src/liblzma/validate_map.sh.
WARNING: This uses __symver__ attribute with GCC >= 10.
In other cases the traditional __asm__(".symver ...")
is used. Using link-time optimization (LTO, -flto) with
GCC versions older than 10 can silently result in
broken liblzma.so.5 (incorrect symbol versions)! If you
want to use -flto with GCC, you must use GCC >= 10.
LTO with Clang seems to work even with the traditional
__asm__(".symver ...") method.
* xzgrep: Fixed compatibility with old shells that break if
comments inside command substitutions have apostrophes (').
This problem was introduced in 5.2.6.
* Build systems:
- New #define in config.h: HAVE_SYMBOL_VERSIONS_LINUX
- Windows: Fixed liblzma.dll build with Visual Studio project
files. It broke in 5.2.6 due to a change that was made to
improve CMake support.
- Windows: Building liblzma with UNICODE defined should now
work.
- CMake files are now actually included in the release tarball.
They should have been in 5.2.5 already.
- Minor CMake fixes and improvements.
* Added a new translation: Turkish
5.2.6 (2022-08-12)
* xz: