CVS commit: src/lib/libc

["Christos Zoulas" <christos%netbsd.org@localhost>]

Module Name:    src
Committed By:   christos
Date:           Wed Sep 11 13:50:35 UTC 2024

Modified Files:
        src/lib/libc/compat/time: compat_localtime.c
        src/lib/libc/time: CONTRIBUTING Makefile Makefile.inc NEWS asctime.c
            localtime.c private.h theory.html tz-art.html tz-link.html tzfile.5
            tzselect.ksh version zdump.c zic.8 zic.c

Log Message:
Merge tzcode-2024b

Release 2024b - 2024-09-04 12:27:47 -0700

  Changes to code

    localtime.c now always uses a TZif file's time type 0 to handle
    timestamps before the file's first transition.  Formerly,
    localtime.c sometimes inferred a different time type, in order to
    handle problematic data generated by zic 2018e or earlier.  As it
    is now safe to assume more recent versions of zic, there is no
    longer a pressing need to fail to conform RFC 8536 section 3.2,
    which requires using time type 0 in this situation.  This change
    does not affect behavior when reading TZif files generated by zic
    2018f and later.

    POSIX.1-2024 removes asctime_r and ctime_r and does not let
    libraries define them, so remove them except when needed to
    conform to earlier POSIX.  These functions are dangerous as they
    can overrun user buffers.  If you still need them, add
    -DSUPPORT_POSIX2008 to CFLAGS.

    The SUPPORT_C89 option now defaults to 1 instead of 0, fixing a
    POSIX-conformance bug introduced in 2023a.

    tzselect now supports POSIX.1-2024 proleptic TZ strings.  Also, it
    assumes POSIX.2-1992 or later, as practical porting targets now
    all support that, and it uses some features from POSIX.1-2024 if
    available.

  Changes to build procedure

    'make check' no longer requires curl and Internet access.

    The build procedure now assumes POSIX.2-1992 or later, to simplify
    maintenance.  To build on Solaris 10, the only extant system still
    defaulting to pre-POSIX, prepend /usr/xpg4/bin to PATH.

  Changes to documentation

    The documentation now reflects POSIX.1-2024.

  Changes to commentary

    Commentary about historical transitions in Portugal and her former
    colonies has been expanded with links to many relevant legislation.
    (Thanks to Tim Parenti.)


To generate a diff of this commit:
cvs rdiff -u -r1.3 -r1.4 src/lib/libc/compat/time/compat_localtime.c
cvs rdiff -u -r1.8 -r1.9 src/lib/libc/time/CONTRIBUTING
cvs rdiff -u -r1.57 -r1.58 src/lib/libc/time/Makefile
cvs rdiff -u -r1.23 -r1.24 src/lib/libc/time/Makefile.inc \
    src/lib/libc/time/tzselect.ksh
cvs rdiff -u -r1.44 -r1.45 src/lib/libc/time/NEWS
cvs rdiff -u -r1.30 -r1.31 src/lib/libc/time/asctime.c
cvs rdiff -u -r1.143 -r1.144 src/lib/libc/time/localtime.c
cvs rdiff -u -r1.69 -r1.70 src/lib/libc/time/private.h
cvs rdiff -u -r1.19 -r1.20 src/lib/libc/time/theory.html
cvs rdiff -u -r1.13 -r1.14 src/lib/libc/time/tz-art.html
cvs rdiff -u -r1.16 -r1.17 src/lib/libc/time/tz-link.html
cvs rdiff -u -r1.35 -r1.36 src/lib/libc/time/tzfile.5
cvs rdiff -u -r1.25 -r1.26 src/lib/libc/time/version
cvs rdiff -u -r1.63 -r1.64 src/lib/libc/time/zdump.c
cvs rdiff -u -r1.50 -r1.51 src/lib/libc/time/zic.8
cvs rdiff -u -r1.91 -r1.92 src/lib/libc/time/zic.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.