coreutils/tests/wc, branch master

tests: wc,du: add additional --files0-from test cases

2026-03-01T02:36:34Z

* tests/wc/wc-files0-from.pl ($limits): New variable. (@Tests): Prefer the error strings from getlimits over writing them by hand. Add test cases for --files0-from listing missing files and duplicate files. * tests/du/files0-from.pl ($limits): New variable. (@Tests): Prefer the error strings from getlimits over writing them by hand. Add test cases for --files0-from listing missing files. Add tests for --files0-from listing duplicate files with and without the -l option also in use.

wc: add aarch64 Neon optimization for wc -l

2026-02-19T04:09:44Z

Here is an example of the performance improvement: $ yes abcdefghijklmnopqrstuvwxyz | head -n 100000000 > input $ time ./src/wc-prev -l < input 100000000 real 0m0.793s user 0m0.630s sys 0m0.162s $ time ./src/wc -l < input 100000000 real 0m0.230s user 0m0.065s sys 0m0.164s * NEWS: Mention the performance improvement. * gnulib: Update to the latest commit. * configure.ac: Check the the necessary intrinsics and functions. * src/local.mk (noinst_LIBRARIES) [USE_NEON_WC_LINECOUNT]: Add src/libwc_neon.a. (src_libwc_neon_a_SOURCES, wc_neon_ldadd, src_libwc_neon_a_CFLAGS) [USE_NEON_WC_LINECOUNT]: New variables. (src_wc_LDADD) [USE_NEON_WC_LINECOUNT]: Add $(wc_neon_ldadd). * src/wc.c [USE_NEON_WC_LINECOUNT]: Include sys/auxv.h and asm/hwcap.h. (neon_supported) [USE_NEON_WC_LINECOUNT]: New function. (wc_lines) [USE_NEON_WC_LINECOUNT]: Use neon_supported and wc_lines_neon. * src/wc.h (wc_lines_neon): Add declaration. * src/wc_neon.c: New file. * doc/coreutils.texi (Hardware Acceleration): Document the "-ASIMD" hwcap and the variable used in ./configure to override detection of Neon instructions. * tests/wc/wc-cpu.sh: Also add "-ASIMD" to disable the use of Neon instructions.

maint: run 'make update-copyright'

2026-01-01T18:56:16Z

tests: wc: protect against a hang on GNU/Hurd

2025-11-07T00:52:03Z

Reported by Bruno Haible in . * tests/wc/wc-total.sh: Skip a test that would exhaust memory on GNU/Hurd.

wc: add AVX512 function for line counting

2025-09-30T13:09:37Z

* configure.ac: Add detection of AVX512 intrinsics for wc. * src/local.mk: Build AVX512 wc libraries. * src/wc.c: Add runtime detection of AVX512 intrinsics and call appropriate function when detected. * src/wc.h (wc_lines_avx512): Declare function. * tests/wc/wc-cpu.sh: Add a test that disables AVX512 intrinsics. * src/wc_avx512.c: New file containing the wc -l implementation using AVX512. The logic and code is reused from the AVX2 implementation with slight adaptations. Replaced __builtin_popcount by __builtin_popcountll and the combination of _mm256_cmpeq_epi8 and _mm256_movemask_epi8 by a single call to _mm512_cmpeq_epi8_mask. * NEWS: Mention the improvement.

tests: wc: fix hardware acceleration disabling test

2025-09-24T14:53:34Z

* tests/wc/wc-cpu.sh: The message is only printed with wc -l. Reported by Mathieu Borderé.

cksum,wc: support disabling hardware acceleration at runtime

2025-09-14T12:43:49Z

This is useful to give better test coverage at least, and may be useful for users to tune their environment. * bootstrap.conf: Reference the cpu-supports gnulib module. * src/cksum.c: Use cpu_supports() rather than __builtin_cpu_supports(). * src/wc.c: Likewise. * tests/cksum/cksum.sh: Adjust to testing all implementations. * tests/wc/wc-cpu.sh: A new test to do likewise. * tests/local.mk: Reference the new wc test.

maint: use consistent references to standard files in messages

2025-08-06T01:46:04Z

* cfg.mk (sc_standard_outputs): Add a grep command for source files. * src/du.c (main): Use standard input instead of stdin, standard output instead of stdout, and standard error instead of stderr in messages. * src/nohup.c (main): Likewise. * src/sort.c (main): Likewise. * src/split.c (main): Likewise. * src/stdbuf.c (main): Likewise. * src/wc.c (main): Likewise. * tests/du/files0-from.pl (@Tests): Adjust test case to new messages. * tests/sort/sort-files0-from.pl: Likewise. * tests/wc/wc-files0-from.pl: Likewise.

maint: update all copyright year number ranges

2025-01-01T09:33:08Z

Update to latest gnulib with new copyright year. Run "make update-copyright" and then... * gnulib: Update included in this commit as copyright years are the only change from the previous gnulib commit. * tests/init.sh: Sync with gnulib to pick up copyright year. * bootstrap: Likewise. * tests/sample-test: Adjust to use the single most recent year.

wc: fix -w with breaking space over UCHAR_MAX

2024-02-26T17:33:02Z

* src/wc.c (wc): Fix regression introduced in commit v9.4-48-gf40c6b5cf. * tests/wc/wc-nbsh.sh: Add test cases for "standard" spaces. Fixes https://bugs.gnu.org/69369