diffutils: Update to version 3.9

diffutils: Update to version 3.9

- Update from version 3.8 to 3.9
- Update of rootfile not required
- Changelog
version 3.9
	* NEWS: Record release date.

	build: update gnulib to latest

2023-01-05  Jim Meyering  <meyering@fb.com>
	tests: avoid large-subopt XPASS on systems without perl
	* tests/large-subopt: Use $PERL, rather than hard-coding "perl".
	* bootstrap.conf (gnulib_modules): Add "perl" to the list.
	Reported by Bruno Haible in
	https://lists.gnu.org/r/diffutils-devel/2023-01/msg00000.html

2023-01-05  Bruno Haible  <bruno@clisp.org>
	tests: avoid a test failure when using Solaris 11.4's old grep
	* tests/colors (nanosecond_zeros): Use a dumbed-down grep '\.'
	in place of "grep -F ." to accommodate Solaris 11.4's old versions
	of grep in the default PATH. Reported here:
	https://lists.gnu.org/r/diffutils-devel/2023-01/msg00001.html

2023-01-01  Jim Meyering  <meyering@fb.com>
	build: update gnulib to latest

	maint: update copyright dates

2022-12-31  Paul Eggert  <eggert@cs.ucla.edu>
	build: simplify GCC 12 false alarm workaround
	* src/util.c (print_message_queue): Pacify GCC in a
	more-straightforward way.

	maint: fix assumption typo
	Fix a typo I introduced in my August 2021 signal handling fixes.
	Problem reported by Sam James (Bug#60457).
	* src/util.c (xsigismember): Don’t assume sigismember cannot return 0.

2022-12-30  Jim Meyering  <meyering@fb.com>
	build: update gnulib to latest

	build: temp?-disable -Wanalyzer-use-of-uninitialized-value
	* src/util.c (print_message_queue): This function triggers false
	positive warnings from GCC12, so add pragmas to ignore that new warning
	in this one function. Required when using either of these:
	- gcc version 12.2.1 20221121
	- gcc version 13.0.0 20221229 (experimental)

2022-12-11  Jim Meyering  <meyering@fb.com>
	build: update gnulib to latest

2022-11-12  Jim Meyering  <meyering@fb.com>
	build: update gnulib to latest

2022-02-14  Paul Eggert  <eggert@cs.ucla.edu>
	doc: mark up SEE ALSO (Bug#53976)

2022-01-24  Jim Meyering  <meyering@fb.com>
	tests: fix false-failure on systems without valgrind
	* tests/init.cfg (require_valgrind_): Use exit status of subshell,
	not that of the "local" declaration.

2022-01-14  Paul Eggert  <eggert@cs.ucla.edu>
	build: update gnulib submodule to latest

2022-01-03  Jim Meyering  <meyering@fb.com>
	maint: avoid new syntax-check failure
	* cfg.mk (local-checks-to-skip): Add sc_indent, to skip it.
	Otherwise, "make syntax-check" would fail.

	maint: make update-copyright

	build: update gnulib to latest; also bootstrap and init.sh

2021-10-30  Paul Eggert  <eggert@cs.ucla.edu>
	maint: modernize README-{hacking,prereq}

2021-10-16  Paul Eggert  <eggert@cs.ucla.edu>
	doc: copy fdl.texi into git
	This pacifies this notice from ./bootstrap: “Notice from module
	fdl: Don't use this module! Instead, copy the referenced license
	file into your version control repository.”
	* bootstrap.conf (gnulib_modules): Remove fdl.
	* doc/fdl.texi: New file, taken from Gnulib.

	maint: direct dependency on time_rz now
	Now that diff calls tzalloc, it depends directly on time_rz.
	* bootstrap.conf (gnulib_modules): Add time_rz.

	build: update gnulib submodule to latest

2021-10-15  Paul Eggert  <eggert@cs.ucla.edu>
	diff: fix timezone bug on Solaris
	Problem reported by Vladimir Marek (bug#51228).
	* NEWS: Mention this.
	* src/context.c (print_context_label): Pass localtz to nstrftime,
	instead of always passing 0.
	* src/diff.c (main) [!HAVE_TM_GMTOFF]:
	Initialize localtz if time_format uses %z.
	* src/diff.h (localtz): New decl.
	* tests/Makefile.am (TESTS): Add timezone.
	* tests/timezone: New test.

2021-08-31  Paul Eggert  <eggert@cs.ucla.edu>
	diff3: port better to MS-Windows
	* src/diff3.c (enum diff_type): Prefix constants like ADD with
	"DIFF_" to avoid collisions with unwise system headers.

2021-08-30  Paul Eggert  <eggert@cs.ucla.edu>
	maint: port better to non-POSIX
	Problem privately reported by Gisle Vanem for MS-Windows.
	* src/util.c (sig, install_signal_handlers):
	Don’t assume SIGTSTP, SIGALRM, SIGQUIT.
	(is_tstp_index): New function, for use in SIGTSTP avoidance.

	maint: prefer attribute.h attributes
	Prefer the macros used in attribute.h, and _Noreturn,
	to the by-hand use of __attribute__, as this is more portable.
	* bootstrap.conf (gnulib_modules): Add attribute.
	* src/system.h: Include attribute.h.  All uses of
	attributes changed to use the attribute.h macros.
	Plus, use _Noreturn.
	(FALLTHROUGH): Remove; attribute.h now defines this.

	build: update gnulib submodule to latest

	diff: avoid double translation
	* src/analyze.c (briefly_report): Do not translate here,
	as ‘message’ translates its format.

	diff: use variable arg list for messages
	This simplifies the code by using varargs.
	* bootstrap.conf (gnulib_modules): Add flexmember.
	(XGETTEXT_OPTIONS): Do not flag message5.
	* src/util.c: Include flexmember.h, stdarg.h.
	(struct msg): New members msgid, argbytes.  args is now
	FLEXIBLE_ARRAY_MEMBER, and does not contain msgid.
	All uses changed.
	(message): Now varargs.  Detect number of args by counting '%'s.
	Use FLEXSIZEOF, to avoid problems on systems with buggy
	allocators.  Avoid redundant ‘*p = 0’ when *p is already zero
	after stpcpy.
	(message5): Remove; all callers changed to use ‘message’.
	(print_message_queue): Abort if too many args were passed;
	this cannot happen with current diffutils.

2021-08-29  Paul Eggert  <eggert@cs.ucla.edu>
	diff: port better to MS-Windows
	Problem reported by Gisle Vanem (Bug#36488#30).
	* src/util.c (xsigaction) [SA_NOCLDSTOP]: Remove; no longer needed.
	(install_signal_handlers): If the first call to sigaction or
	signal fails, do not exit; just skip the signal and continue,
	in case the runtime does not support the signal even though the
	corresponding SIG* macro is defined.

2021-08-28  Paul Eggert  <eggert@cs.ucla.edu>
	diff: cleanup signal handling just before exit
	This should fix an unlikely signal handling bug with colored
	output, and should also fix a Debian FTBFS (Fails To Build From
	Source) on powerpc64le-linux.  See Bug#34519 and Frédéric
	Bonnard’s report in:
	https://bugs.debian.org/922552#19
	* bootstrap.conf (gnulib_modules): Add raise, sigprocmask.
	* src/diff.c (main): Call cleanup_signal_handlers before exiting.
	Don’t bother calling ‘exit’; no longer needed nowadays.
	* src/util.c (sigprocmask, siginterrupt) [!SA_NOCLDSTOP]:
	Define to 0 instead of empty, since the results are now used.
	(sigset_t) [!SA_NOCLDSTOP]: Remove; we now rely on Gnulib.
	(xsigaction) [SA_NOCLDSTOP]: New function.
	(xsigaddset, xsigismember, xsignal, xsigprocmask): New functions.
	(some_signals_caught): New static var.
	(process_signals): Omit a conditional branch.
	Don’t bother loading interrupt_signal if stop_signal_count is nonzero.
	(process_signals, install_signal_handlers):
	Check for failures from sigprocmask etc.
	(sig, nsig): Now at top level, since multiple functions need them.
	(install_signal_handlers): No need for caught_sig array;
	just use caught_signals.  However, set some_signals_caught.
	(cleanup_signal_handlers): New function.

2021-08-22  Paul Eggert  <eggert@cs.ucla.edu>
	diff: add integer overflow checking
	* src/diff.c (option_list, main): Check for integer overflow
	in some unlikely and hard-to-test cases.

	maint: refactor integer overflow checking
	Rely on more-modern Gnulib capabilities instead of doing
	integer overflow checking by hand, in some cases.
	* lib/cmpbuf.c (buffer_lcm):
	* src/io.c (slurp, find_identical_ends):
	Use INT_ADD_WRAPV and INT_MULTIPLY_WRAPV rather than checking
	overflow by hand.
	* src/diff3.c (process_diff):
	* src/dir.c (dir_read):
	* src/io.c (find_identical_ends, read_files):
	Use xnmalloc rather than checking overflow by hand.
	(read_files): Rely on xcalloc to do overflow checking.

	diff: avoid sprintf %s
	sprintf fails if the result contains more than INT_MAX bytes,
	so rework the code to avoid usage of sprintf %s where the
	string might be longer than that.
	* bootstrap.conf (gnulib_modules): Remove xvasprintf.
	* src/diff.c (specify_style):
	* src/util.c (begin_output):
	Rewrite to avoid sprintf %s.
	* src/util.c: Do not include xvasprintf.h.
	(concat): Remove, as it uses sprintf %s.  All uses rewritten.

	diff: use mempcpy
	* bootstrap.conf (gnulib_modules): Add mempcpy, stpcpy.
	* src/ifdef.c (do_printf_spec):
	* src/sdiff.c (expand_name, lf_snarf, temporary_file):
	* src/util.c (message5):
	Prefer mempcpy to memcpy plus manual size-updating.
	Prefer stpcpy to mempcpy plus manual size-spec.

	sdiff: fix unlikely memory leak
	* src/sdiff.c (temporary_file): Fix memory leak when mkstemp fails.
	Don’t assume temporary file name length fits in ‘int’.

	diff3: simplify process_diff
	* src/diff3.c (process_diff): Remove LAST_BLOCK arg, since callers
	no longer needed it.  All callers changed.  This removes an
	unnecessary initialization of bptr to NULL.

	maint: modernize IF_LINT for GCC 11.2.1
	* src/cmp.c (cmp):
	* src/dir.c (find_dir_file_pathname):
	* src/sdiff.c (edit):
	Mention which GCC bug this IF_LINT works around.
	* src/diff3.c (process_diff):
	Always initialize to NULL, to avoid problems on mostly-theoretical
	hosts where accessing uninitialized variables traps.  The next
	patch will have a better fix for this.
	* src/ifdef.c (do_printf_spec):
	No need for IF_LINT in GCC 11.2.1.

	maint: lint → GCC_LINT
	‘lint’ is for traditional lint and perhaps some other tools;
	‘GCC_LINT’ is targeted more for what we do.
	Gnulib accepts either, but we might as well be more accurate.
	* configure.ac (GCC_LINT): Define this instead of ‘lint’.
	All uses changed.

	diff: remove printint
	* src/system.h (printint): Remove.  All uses removed.  This type
	was only for porting to pre-C89 hosts, and is no longer needed.

	diff: remove INT_MAX limit on -F/-p searches
	* src/context.c (find_function): Don’t limit function-line
	searches to INT_MAX bytes, removing a FIXME.

	maint: .gitignore updates
	* .gitignore: Remove lib/unused-parameter.h.  Add all of m4, since
	no files there need to be committed; this lets us remove
	m4/.gitignore and m4/gnulib-cache.m4.  Add *.orig, *.patch, .Tpo,
	/*.diff, lib/*/ (which lets us remove /lib/sys/), lib/ctype.h,
	lib/errno.h, lib/float.h, lib/fnmatch.h, lib/getopt-cdefs.h,
	lib/getopt.h, lib/limits.h, lib/sigsegv.h, lib/stdalign.h,
	lib/stdarg.h, lib/stdbool.h, lib/stddef.h, lib/stdint.h,
	lib/stdopen.[ch], vc-dwim-log-*.  Add slashes to autom4te.cache,
	build-aux.  Remove redundant initial slashes from patterns that
	also have internal slashes.  Remove plain ABOUT-NLS, since
	/ABOUT-NLS suffices.  Sort using LC_ALL=C.

	maint: omit unused function if not debugging
	* src/util.c (debug_script): Compile only if DEBUG.

	maint: remove prepargs
	* lib/Makefile.am (noinst_HEADERS): Remove prepargs.h.
	(libdiffutils_a_SOURCES): Remove prepargs.c.
	* lib/prepargs.c, lib/prepargs.h: Remove.  Hasn’t been
	needed for many years.
	* src/diff.c: Do not include prepargs.h.

	maint: zalloc → xzalloc
	* src/util.c (zalloc): Remove.  All uses replaced
	by xzalloc, which means the same thing.

2021-08-22  Paul Eggert  <eggert@cs.ucla.edu>
	diff3: suppress -fanalyzer alarms
	* src/diff3.c: Add pragma to suppress -Wanalyzer-null-dereference
	alarms.

	* src/diff.h (find_dir_file_pathname): Add malloc-related
	attributes, to pacify gcc -Wsuggest-attribute=malloc.

2021-08-22  Paul Eggert  <eggert@cs.ucla.edu>
	maint: remove January workaround for Gnulib issue
	* configure.ac: Don’t add -Wno-analyzer-null-argument, since
	the issue is now fixed in Gnulib.

	build: update gnulib submodule to latest

2021-08-01  Paul Eggert  <eggert@cs.ucla.edu>
	maint: remove stray init.cfg
	* init.cfg: Remove.  I guess this file was a stray, since it was a
	copy of tests/init.cfg when it was checked in, and it hasn’t been
	maintained since.

	tests: port to valgrind 3.16.0 + GCC 11.2
	* tests/init.cfg (stderr_fileno_): Reject valgrind if it reports a
	"Serious error" on a trival use of ‘diff’.  Without this patch, on
	RHEL 8.4 when I compile diffutils with a GCC 11.2.0 that I built
	myself, ‘valgrind diff’ spits out messages like WARNING: Serious
	error when reading debug info / When reading debug info from diff:
	Ignoring non-Dwarf2/3/4 block in .debug_info’ and this causes the
	strip-trailing-cr test to fail.  I guess valgrind complains
	because the valgrind version 3.16.0 that came with RHEL 8.4 cannot
	grok the debug entries generated by GCC 11.2.0.

2021-08-01  Jim Meyering  <meyering@fb.com>
	maint: post-release administrivia
	* NEWS: Add header line for next release.
	* .prev-version: Record previous version.
	* cfg.mk (old_NEWS_hash): Auto-update.

Signed-off-by: Adolf Belka <adolf.belka@ipfire.org>
Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>