tukaani-project/xz v5.8.2

XZ Utils 5.8.2 (stable)

on GitHub

5.8.2 (2025-12-17)

    * liblzma:

        - Fix the build on ARM64 on glibc versions older than
          2.24 (2016). They don't have HWCAP_CRC32 in <sys/auxv.h>.

        - Disable CLMUL CRC code when building for 32-bit x86 with
          old MSVC versions. This avoids a compiler bug. The exact
          compiler version in which the issue was fixed is unknown,
          but VS 2022 17.13 (MSVC 19.43.34808) is known to work, so
          CLMUL CRC on 32-bit x86 is disabled with MSVC versions
          older than that.

    * xz:

        - Add a workaround for Red Hat Enterprise Linux 9 kernel bug
          which made xz fail with "xz: Failed to enable the sandbox".
          It only occurs with xz 5.8.0 and 5.8.1 binaries built for
          other distros. For example, running Debian 13 in a container
          on RHEL/CentOS 9 would trigger the issue.

          The bug was introduced in RHEL 9 kernel 5.14.0-603.el9
          (2025-07-30) and fixed in 5.14.0-648.el9 (2025-12-05).
          However, as of writing, the fixed kernel isn't available
          to RHEL 9 users yet, so including the workaround in this
          xz release seems reasonable. The workaround will be removed
          when it's no longer needed.

          xzdec was also affected by this issue.

        - On AIX, don't use fsync() on directories because it fails.

        - Fix the build on Emscripten.

        - Fix the build on clang-cl on Windows.

        - Take resource limits (RLIMIT_DATA, RLIMIT_AS, and RLIMIT_VMEM)
          into account when determining the default memory usage limit
          for multithreaded mode. This should prevent xz from failing
          when a resource limit has been set to a value that is less
          than 1/4 of total RAM. Other memory limits can still trigger
          the same issue, for example, Linux cgroup v2 memory.max.

    * Build systems:

        - When symbol versioning is enabled, pass --undefined-version
          to the linker if the option is supported. This fixes the
          build when using LLVM's lld and some liblzma features have
          been disabled at build time.

        - ARM64: Fix autodetection of fast unaligned memory access when
          using GCC and -mstrict-align is in effect. Previously the
          build systems would incorrectly guess that unaligned access
          is fast, which would result in much slower binaries than
          needed. The fix is a workaround for GCC bug 111555;
          autodetection already worked with Clang.

        - LoongArch: Autodetect if fast unaligned memory access is
          supported. This can improve compression speed by 15 % (but
          not decompression speed).

    * Translations:

        - Update the Spanish translation.

        - Add Swedish man page translations.

        - Update Italian, Korean, Romanian, Serbian, and Ukrainian
          man page translations.