PR/59249: Taylor R Campbell: Add missing man pages: strptime_l, strftime_l,
strftime_lz, strftime_z

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.)

branches: 1.23.12;
ALL_STATE was bought by STATE_FARM.

branches: 1.22.16;
Add tzgetgmtoff(3)

Fix typo.

Fix backslashes

Sync with tzcode2014h

branches: 1.18.4;
"soon" is "now". Remove all __indr_reference crap.

branches: 1.17.2; 1.17.8;
annotate that some functions use non-literal format strings.

it is getname not time.

add the 3 missing man pages.

Provide a re-entrant and thread-safe set of timezone API's that
don't require locking and can operate on user-specified timezones
as opposed to having to alter the environment to change a timezone.
This work was presented to the tzcode folks and it was generally
accepted, but there seems to be a lot of inertia.

Update MLINKS to match the flist.

Add the getdate(3) function and getdate_err value, conforming to IEEE
Std 1003.1 (``POSIX.1'') and the Open Group Base Specifications X/Open
System Interfaces extension (``XSI'').

Use CPPFLAGS for -D flags otherwise lint does not get it.

Add a manual page for the standard-inspired offtime(3) and friends;
requested by Thomas Klausner.

Add a daylight(3) link as well. XXX Can't link to timezone(3) yet.

Finally deprecate the old timezone() interface in favor of an XSH5
timezone/daytime pair; as proposed by J.T. in September, 1996.
Fixes PR standards/11807 by Nick Hudson.

branches: 1.7.10;
Add documentation for asctime_r(), ctime_r(), gmtime_r() and localtime_r().

Add -DALL_STATE, to allocate localtime() data structures dynamically.

Add a strptime(3) manual page.

move str[fp]time into libc/time.

branches: 1.3.2;
Added some manpages and manpage links (moved from libc/gen).

Fix typo.

Makefile for new time stuff