src/lib/libc/string, branch main

libc/fls.c: use _WIDTH macros over CHAR_BIT * sizeof(type)

2026-04-22T22:58:54Z

Makes the code easier to understand. MFC after: 1 week

bcmp(3): update manpage to following the Posix Standard

2026-02-02T06:58:26Z

Reviewed by: glebius Approved by: glebius (mentor) Differential Revision: https://reviews.freebsd.org/D52980

swab: Correctly treat the data as misaligned

2026-01-14T17:10:33Z

The __aligned attribute in the previous version applied to the location of the pointers, not the data the pointers pointed to. While this could be fixed by applying the attribute to a local typedef of uint16_t, just using memcpy() for the unaligned access is simpler and ISO C. This fixes the build on CHERI architectures which do not support misaligned pointers and were thus failing with: lib/libc/string/swab.c:12:18: error: alignment (1) of 'const uint16_t *' (aka 'const unsigned short *') is less than the required capability alignment (16) [-Werror,-Wcheri-capability-misuse] 12 | const uint16_t *f __aligned(1) = from; | Co-authored by: Jessica Clarke Fixes: 02ebbc781f08 ("swab: Fix implementation to support overlapping copies") Sponsored by: AFRL, DARPA Reviewed by: markj Differential Revision: https://reviews.freebsd.org/D54399

libc/string: add strdupa(3) and strndupa(3)

2025-12-08T22:34:57Z

Reviewed by: markj Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D54066

libc/string: put source files list one item per line

2025-12-08T22:34:57Z

Reviewed by: markj Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D54066

man/man3: add cross references to stdbit(3)

2025-11-30T19:21:52Z

Add cross references to relevant stdbit man pages Approved by: markj (mentor) MFC after: 1 month Differential Revision: https://reviews.freebsd.org/D53661

ffs.3: Add a STANDARDS section to the manual page

2025-10-25T21:37:22Z

The ffs() function conforms to IEEE Std 1003.1-2008 ("POSIX.1"). The ffsl() and ffsll() functions conform to IEEE Std 1003.1-2024 ("POSIX.1"). Reviewed by: ziaee MFC after: 5 days Differential Revision: https://reviews.freebsd.org/D53352

memchr.3: Operates on objects, not strings

2025-07-25T13:48:42Z

Suggested by: avg Reviewed by: avg Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D51523

memchr.3: mention the len argument in the functions description

2025-07-22T15:11:40Z

Otherwise, its use is only specified in the error case, which is somewhat obscure. Also properly typeset NULL. Reviewed by: pauamma_gundo.com Discussed with: emaste Sponsored by: The FreeBSD Foundation MFC after: 3 days Differential revision: https://reviews.freebsd.org/D51424

manuals: Align our tree with upstream C23 macro

2025-06-12T21:24:10Z

Switch all instances of the -isoC-2024 macro to -isoC-2023 selected by upstream. Keep -isoC-2024 defined, but deprecated, for backwards compat. MFC after: 3 days (I will resolve merge conflicts with cdefs)