mirror of https://git.tukaani.org/xz.git
Add NEWS for 5.2.7 (forgotten cherry-pick from v5.2).
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NEWS
74
NEWS
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@ -218,6 +218,80 @@ XZ Utils Release Notes
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(FreeBSD >= 10).
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(FreeBSD >= 10).
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5.2.7 (2022-09-30)
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* liblzma:
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- Made lzma_filters_copy() to never modify the destination
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array if an error occurs. lzma_stream_encoder() and
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lzma_stream_encoder_mt() already assumed this. Before this
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change, if a tiny memory allocation in lzma_filters_copy()
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failed it would lead to a crash (invalid free() or invalid
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memory reads) in the cleanup paths of these two encoder
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initialization functions.
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- Added missing integer overflow check to lzma_index_append().
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This affects xz --list and other applications that decode
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the Index field from .xz files using lzma_index_decoder().
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Normal decompression of .xz files doesn't call this code
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and thus most applications using liblzma aren't affected
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by this bug.
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- Single-threaded .xz decoder (lzma_stream_decoder()): If
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lzma_code() returns LZMA_MEMLIMIT_ERROR it is now possible
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to use lzma_memlimit_set() to increase the limit and continue
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decoding. This was supposed to work from the beginning
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but there was a bug. With other decoders (.lzma or
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threaded .xz decoder) this already worked correctly.
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- Fixed accumulation of integrity check type statistics in
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lzma_index_cat(). This bug made lzma_index_checks() return
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only the type of the integrity check of the last Stream
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when multiple lzma_indexes were concatenated. Most
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applications don't use these APIs but in xz it made
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xz --list not list all check types from concatenated .xz
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files. In xz --list --verbose only the per-file "Check:"
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lines were affected and in xz --robot --list only the "file"
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line was affected.
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- Added ABI compatibility with executables that were linked
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against liblzma in RHEL/CentOS 7 or other liblzma builds
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that had copied the problematic patch from RHEL/CentOS 7
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(xz-5.2.2-compat-libs.patch). For the details, see the
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comment at the top of src/liblzma/validate_map.sh.
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WARNING: This uses __symver__ attribute with GCC >= 10.
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In other cases the traditional __asm__(".symver ...")
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is used. Using link-time optimization (LTO, -flto) with
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GCC versions older than 10 can silently result in
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broken liblzma.so.5 (incorrect symbol versions)! If you
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want to use -flto with GCC, you must use GCC >= 10.
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LTO with Clang seems to work even with the traditional
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__asm__(".symver ...") method.
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* xzgrep: Fixed compatibility with old shells that break if
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comments inside command substitutions have apostrophes (').
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This problem was introduced in 5.2.6.
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* Build systems:
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- New #define in config.h: HAVE_SYMBOL_VERSIONS_LINUX
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- Windows: Fixed liblzma.dll build with Visual Studio project
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files. It broke in 5.2.6 due to a change that was made to
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improve CMake support.
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- Windows: Building liblzma with UNICODE defined should now
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work.
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- CMake files are now actually included in the release tarball.
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They should have been in 5.2.5 already.
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- Minor CMake fixes and improvements.
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* Added a new translation: Turkish
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5.2.6 (2022-08-12)
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5.2.6 (2022-08-12)
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* xz:
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* xz:
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