+2021-05-28 Eric Blake <eblake@redhat.com>
+
+ version 1.4.19
+ * NEWS: Record release date.
+
+2021-05-28 Eric Blake <eblake@redhat.com>
+
+ tests: Skip signal detection on Haiku
+ On Haiku, using 'kill -9' fromm /bin/shactually causes a process to
+ die with the non-standard SIGKILLTHR 15, which causes 198.sysval to
+ fail from the unexpected value.
+
+ * doc/m4.texi (Sysval): Skip test on Haiku.
+ Reported by Bruno Haible,
+ https://lists.gnu.org/archive/html/bug-m4/2021-05/msg00004.html
+
+2021-05-26 Bruno Haible <bruno@clisp.org>
+
+ Enable more single-thread optimizations in gnulib code
+ On many systems (esp. BSD ones), building a recent m4 snapshot produces these
+ warnings:
+
+ --------------------------------------------------------------------------------
+ CC regex.o
+ In file included from ../../lib/regex_internal.h:57:0,
+ from ../../lib/regex.c:70:
+ ../../lib/regcomp.c: In function 'rpl_regfree':
+ ../../lib/glthread/lock.h:640:38: warning: statement with no effect [-Wunused-value]
+ # define glthread_lock_destroy(NAME) 0
+ ^
+ ../../lib/regex_internal.h:60:26: note: in expansion of macro 'glthread_lock_destroy'
+ # define lock_fini(lock) glthread_lock_destroy (&(lock))
+ ^
+ ...
+ --------------------------------------------------------------------------------
+ According to the Gnulib documentation section "Optimizations of multithreaded
+ code" several more optimizations can be enabled. This patch
+ - enables these single-threading optimizations,
+ - by doing so, gets rid of the warnings in regex.c,
+ - causes no test failures.
+
+ * configure.ac (GNULIB_REGEX_SINGLE_THREAD, GNULIB_MBRTOWC_SINGLE_THREAD,
+ GNULIB_WCHAR_SINGLE_LOCALE): Define as C macros.
+ Message-Id: <3311608.oHEOCP8NKg@omega>
+
+2021-05-26 Eric Blake <eblake@redhat.com>
+
+ maint: Update to newer gnulib
+ Gnulib has improved stack overflow detection (the c-stack module now
+ uses gnulib's stripped-down libsigsegv on more platforms, without
+ having to install GNU libsigsegv); with this update, GNU Linux systems
+ get stack overflow protection without an external library dependency.
+ * gnulib: Update to latest.
+ * NEWS: Mention the impact.
+
+2021-05-12 Eric Blake <eblake@redhat.com>
+
+ maint: translation string tweak
+ * src/m4.c (usage): Tweak translation of a newline.
+ Reported by Benno Schulenberg,
+ https://lists.gnu.org/archive/html/m4-discuss/2021-05/msg00011.html
+
+2021-05-11 Eric Blake <eblake@redhat.com>
+
+ maint: post-release administrivia
+ * NEWS: Add header line for next release.
+ * .prev-version: Record previous version.
+ * cfg.mk (old_NEWS_hash): Auto-update.
+
+ version 1.4.18d
+ * NEWS: Recored release date.
+
+2021-05-10 Eric Blake <eblake@redhat.com>
+
+ po: fix syntax-check
+ * po/POTFILES.in: Update list to match previous patch.
+
+ m4: translate more strings
+ * src/m4.c (usage): Split large paragraphs, and mark for translation.
+ (main): Translate more strings.
+ * src/builtin.c: Likewise.
+ * src/eval.c (evaluate): Likewise.
+ * src/format.c (expand_format): Likewise.
+ * src/freeze.c: Likewise.
+ * src/input.c: Likewise.
+ * src/macro.c: Likewise.
+ * src/output.c: Likewise.
+ Reported by Benno Schulenberg:
+ https://lists.gnu.org/archive/html/m4-discuss/2021-05/msg00005.html
+
+2021-05-10 Eric Blake <eblake@redhat.com>
+
+ maint: update gnulib
+ Fix several issues reported by Bruno Haible while testing 1.4.18b:
+ https://lists.gnu.org/archive/html/bug-m4/2021-05/msg00002.html
+ https://lists.gnu.org/archive/html/bug-m4/2021-05/msg00003.html
+
+ * gnulib: Bump to latest, for various fixes.
+ * NEWS: Mention this.
+
+2021-05-10 Eric Blake <eblake@redhat.com>
+
+ maint: update m4-latest* symlinks during upload
+ Avoid the situation we had for several years where m4-latest.tar.xz
+ pointed to m4-1.4.17.tar.xz in spite of m4-1.4.18.tar.xz existing.
+ https://lists.gnu.org/archive/html/m4-discuss/2021-05/msg00003.html
+
+ * cfg.mk (GNUPLOADFLAGS): Update *-latest symlinks during gnupload.
+
+2021-05-10 Eric Blake <eblake@redhat.com>
+
+ maint: mention ci project
+ Bruno Haible has added a continuous integration environment:
+ https://lists.gnu.org/archive/html/bug-m4/2020-03/msg00000.html
+
+ * HACKING (Continuous Integration): New section.
+
+2021-05-10 Bruno Haible <bruno@clisp.org>
+
+ eval: avoid undefined behaviour when parsing -2147483648
+ * src/eval.c (eval_lex): Use an unsigned variable for accumulating the
+ value.
+ https://lists.gnu.org/archive/html/bug-m4/2021-05/msg00001.html
+
+2021-05-07 Eric Blake <eblake@redhat.com>
+
+ maint: post-release administrivia
+ * NEWS: Add header line for next release.
+ * .prev-version: Record previous version.
+ * cfg.mk (old_NEWS_hash): Auto-update.
+
+ version 1.4.18b
+ * NEWS: Record release date.
+
+ maint: prepare for beta release
+ * all: Prefer https over http in URLs.
+ * doc/m4.texi (History): Update URLs to follow redirects.
+ * NEWS: Prepare for release.
+ * cfg.mk (old_NEWS_hash): Regenerate via 'make update-NEWS-hash'
+ * HACKING: Update URL to gnulib, drop reference to CVS.
+
+ maint: update gnulib to latest
+ * gnulib: Pick up latest in preparation for release.
+
+2021-05-07 Eric Blake <eblake@redhat.com>
+
+ maint: update bootstrap, (re-)enable po file generation
+ In commit 4694c4e67, I disabled bootstrap pulling in po files, because
+ I got an error while attempting to get them, and remembered that while
+ the experimental 2.0 has a .pot file, branch-1.4 (and the 1.4.18
+ release) historically did not. Basically, since the translation
+ project does not have any m4.pot corresponding to a released m4 that
+ needs it, they deleted tp/latest/m4, and with nothing to pull from,
+ rsync fails. I did not, however, realize that commit 610290de had
+ intentionally added translation support, such that m4 1.4.19 WILL have
+ translations; so until I get that directory reinstated by releasing
+ 1.4.18b, I'll just use './bootstrap --skip-po'.
+
+ Meanwhile, Gary's upstream bootstrap has had some commits
+ (https://github.com/gnulib-modules/bootstrap.git)
+ Regenerate them via:
+ for f in gl/build-aux/*; do cp ~/bootstrap/build-aux/$(basename $f) $f; done
+ gl/build-aux/inline-source gl/build-aux/bootstrap.in > bootstrap
+
+ * gl/build-aux/*: Sync from upstream.
+ * bootstrap: Regenerate.
+ * bootstrap.conf (m4_bootstrap_options_prep): Re-enable po.
+ * NEWS: Document this as intentional.
+ Fixes: 4694c4e67
+
+2021-05-07 Eric Blake <eblake@redhat.com>
+
+ maint: fix syntax-check issues
+ * src/Makefile.am (m4_LDADD): Rename...
+ (LDADD): ...to this, and use spelling that satisfies syntax-check.
+ * po/POTFILES.in: Update to satisfy syntax-check.
+ * cfg.mk (old_NEWS_hash): Update with 'make update-NEWS-hash'.
+
+ maint: bump copyright year
+ * all: Use 'make update-copyright' to add 2021.
+
+ README: add GNU Project notice
+ * README: Add section to attract more people towards the GNU project.
+ Inspired by a suggestion from Jose E. Marchesi <jemarch@gnu.org> on
+ the gnu-prog-discuss mailing list.
+
+2021-04-22 Eric Blake <eblake@redhat.com>
+
+ m4: change command-line -H default
+ * src/m4.h (HASHMAX): Bump to ~64k.
+ * doc/m4.texi (Limits control): Document it.
+ * NEWS: Likewise.
+
+ maint: another gnulib update
+ * gnulib: Update to latest, to fix build on rawhide.
+
+2021-04-21 Eric Blake <eblake@redhat.com>
+
+ symtab: use less memory in pushdef stacks
+ No need to xstrdup identical names when we can share the same name
+ across the pushdef stack.
+
+ * src/symtab.c (free_symbol): Don't free shared name.
+ (lookup_symbol): Share name across pushdef stack.
+
+2021-04-21 Eric Blake <eblake@redhat.com>
+
+ symtab: make symtab private
+ No need for a leaky abstraction of freezing to have to duplicate how
+ our symbol hash table is organized; use the public function
+ hack_all_symbols instead. This will make it easier to refactor the
+ symbol table (such as automatic resizing, or switching to a trie).
+
+ * src/m4.h (symtab, SYMBOL_NEXT): Make private.
+ * src/freeze.c (produce_frozen_state): Split out...
+ (freeze_symbol): ...new helper, for use by hack_all_symbols.
+ * src/symtab.c (lookup_symbol, symtab_print_list): Update to treat
+ next as internal-only code.
+
+2021-04-21 Eric Blake <eblake@redhat.com>
+
+ symtab: sort by hash before name
+ It is faster to do an integer compare than a string compare when
+ managing hash table collisions (reserving a string compare for ties).
+ Testing with CFLAGS=-DDEBUG_SYM=1 and 'time M4=src/m4 autoconf -f',
+ the results are noticeable; on my machine, execution speeds up from
+ 2.3s to 2.2s, and the debug trace that used to report:
+
+ m4: lookup mode 0 called 1243301 times, 7859589 compares, 6734330 misses, 23941043 bytes
+
+ now reports
+
+ m4: lookup mode 0 called 1243301 times, 1125259 compares, 0 misses, 12433237 bytes
+
+ * src/m4.h (struct symbol): Add hash member.
+ * src/symtab.c (lookup_symbol): Sort by hash first, then name.
+ (symtab_print_list): Add hash debug.
+
+2021-04-21 Eric Blake <eblake@redhat.com>
+
+ maint: switch from git:// to https:// for gnulib submodule
+ https:// is nicer than git:// for a transport for avoiding
+ man-in-the-middle attacks, provided that the server is using a
+ new-enough version of git to make https:// efficient (which
+ savannah does).
+ * .gitmodules: Prefer better URL.
+
+2021-04-21 Paul Eggert <eggert@cs.ucla.edu>
+
+ maint: port to Solaris 10
+ Add libraries needed by current Gnulib.
+ * src/Makefile.am (m4_LDADD): Add LIB_CLOCK_GETTIME,
+ LIB_GETRANDOM, LIB_HARD_LOCALE, LIB_POSIX_SPAWN,
+ LIB_SETLOCALE_NULL, LIBUNISTRING, INTL_MACOSX_LIBS.
+ These are all needed by current Gnulib, according to gnulib-tool.
+ LIB_CLOCK_GETTIME is certainly needed for Solaris 10; otherwise
+ the m4 link fails with clock_gettime not found.
+
+ maint: port to macOS 11.2.3 (arm64)
+ * m4/gnulib-cache.m4: Add fopen-gnu, replacing cloexec and fopen.
+ Avoid getopt-posix-tests, since they are not needed for m4
+ and currently fail on macOS 11.2.3 (arm64).
+ * src/builtin.c (m4_incr, m4_decr): Avoid undefined behavior
+ on integer overflow that causes tests to fail on macOS.
+ * src/debug.c (debug_set_output):
+ * src/output.c (m4_tmpfile, m4_tmpopen):
+ * src/path.c (m4_fopen):
+ Use GNU fopen with "e" rather than set_cloexec_flag. This is
+ simpler, and works around a Gnulib bug on macOS with fopen
+ being replaced by rpl_fopen sometimes but not other times.
+ * src/freeze.c (produce_frozen_state): Use GNU fopen with "e";
+ no need to expose the fd to subprocesses.
+
+ build: update gnulib submodule to latest
+
+2021-04-17 Eric Blake <eblake@redhat.com>
+
+ symtab: drop redundant symbol flag
+ In writing the previous patch, I noticed that the shadow flag is only
+ ever set when a pushdef stack is present, which makes it redundant now
+ that the pushdef stack is separate from the hash collision stack.
+
+ * src/m4.h (SYMBOL_SHADOWED): Delete.
+ * src/builtin.c (dump_symbol): Simplify, now that hack_all_symbols
+ no longer visits shadowed macros.
+ * src/symtab.c (lookup_symbol, symtab_print_list): Simplify.
+
+2021-04-17 Eric Blake <eblake@redhat.com>
+
+ symtab: better handling of macro stacks
+ I ran into a scenario where running a program took 22s with the
+ default -H509, but less than a second with -H517 [1]. The culprit? A
+ collision between 'stack' and 'substr' in the default hash table size
+ caused lookups for substr to get progressively slower as pushdef stack
+ got deeper. This is easy enough to fix, and may also make it easier
+ to dynamically grow the hashtable.
+
+ [1] https://lists.gnu.org/archive/html/bug-m4/2021-04/msg00000.html
+
+ * src/m4.h (struct symbol): Add stack member.
+ * src/symtab.c (lookup_symbol): Separate stack from bucket list.
+ (symtab_print_list): Update traversal to match.
+ * src/freeze.c (produce_frozen_state): Likewise.
+ (reverse_symbol_list): Reverse stack, not bucket.
+
+2021-04-17 Eric Blake <eblake@redhat.com>
+
+ input: optimize macro tail-call memory usage
+ I encountered an m4 program that performed over 20 million iterations
+ of a tail-call recursion paradigm. Without this patch, memory usage
+ grew to over 6 gigabytes, pausing the program for several seconds when
+ the recursion finally ended just to reclaim the memory. But with the
+ patch, m4 never needed more than 3 megabytes of resident memory.
+
+ * src/input.c (push_string_init): Prune empty string blocks before
+ starting another one.
+
+2021-04-17 Eric Blake <eblake@redhat.com>
+
+ maint: update gnulib and fix build failures
+ I got failures when trying to bootstrap:
+
+ bootstrap: getting translations into po/.reference for m4...
+ receiving incremental file list
+ rsync: change_dir "/latest/m4" (in tp) failed: No such file or directory (2)
+
+ since m4-1.4 has no translation files, and the translation project
+ dropped the stale .po files for the unreleased 1.9 development branch.
+
+ Once that was fixed, I also got compilation failures, from an
+ incomplete update to the gnulib execute module:
+
+ builtin.c: In function 'm4_syscmd':
+ builtin.c:968:44: error: passing argument 3 of 'execute' from incompatible pointer type [-Werror=incompatible-pointer-types]
+ 968 | status = execute (ARG (0), SYSCMD_SHELL, prog_args, NULL, false,
+ | ^~~~~~~~~
+ | |
+ | const char **
+
+ Fixes: 4e5c2c0157
+
+ * gnulib: Update to latest.
+ * bootstrap.conf (copyright_holder): Silence bootstrap warning.
+ (m4_bootstrap_options_prep): Turn off po update.
+
+2020-12-12 Bruno Haible <bruno@clisp.org>
+
+ Update after gnulib changed.
+ * src/builtin.c (m4_syscmd): Update 'execute' invocation.
+ (m4_esyscmd): Update 'create_pipe_in' invocation.
+ * po/POTFILES.in: Remove lib/w32spawn.h. Add lib/openat-die.c, lib/os2-spawn.c.
+
+2020-08-23 Paul Eggert <eggert@cs.ucla.edu>
+
+ * HACKING: Autoconf 2.64 required now.
+
+2020-08-23 Bruno Haible <bruno@clisp.org>
+
+ build: Fix bootstrap failure with the newest gnulib.
+ * configure.ac: Require Autoconf 2.64 at least.
+
+2020-07-17 Paul Eggert <eggert@cs.ucla.edu>
+
+ Port recent changes to AIX 7.1
+ * src/Makefile.am (m4_LDADD): Add LIB_MBRTOWC, LIB_SETLOCALE.
+ AIX 7.1 needs these to get the pthread support linked in.
+
+2020-07-13 Paul Eggert <eggert@cs.ucla.edu>
+
+ Support gettext and proper names
+ This way, ‘m4 --version’ outputs “Written by René Seindal”
+ instead of “Written by Rene' Seindal” when in a UTF-8 locale.
+ As the Translation project adds translations, NLS should
+ get better.
+ * .gitignore: Add translation-related file names.
+ * AUTHORS, ChangeLog-2014, NEWS, README, acinclude.m4, c-boxes.el:
+ Spell “François” and “René” without ASCIIfying.
+ * HACKING: Add Gettext as a prereq.
+ * Makefile.am (SUBDIRS): Add po.
+ * configure.ac: Do not use -Wvla. Add AM_GNU_GETTEXT
+ and AM_GNU_GETTEXT_VERSION calls.
+ * lib/Makefile.am (MAINTAINERCLEANFILES): Define to empty.
+ * m4/gnulib-cache.m4: Add configmake, gettext-h, propername,
+ and setlocale modules.
+ * po/POTFILES.in: New file.
+ * src/Makefile.am (m4_LDADD): Add $(LIBICONV), $(LIBINTL).
+ * src/m4.c: Include configmake.h, propername.h.
+ (main): Set the locale.
+ * src/m4.h: Include locale.h, gettext.h.
+ (textdomain, bindtextdomain) [!ENABLE_NLS]: Provide defaults.
+ (_): Now an alias for gettext, instead of a no-op.
+
+ Use c-ctype.h instead of ctype.h
+ This simplifies the code a bit, and prepares for setlocale.
+ * m4/gnulib-cache.m4: Add c-ctype module.
+ * src/builtin.c (numeric_arg, m4_undivert, expand_user_macro):
+ * src/eval.c (eval_lex):
+ * src/format.c (arg_int, arg_long, arg_double, expand_format):
+ * src/freeze.c (GET_NUMBER): m
+ * src/input.c (next_token, peek_token):
+ * src/macro.c (expand_argument):
+ Prefer c-ctype macros to ctype macros.
+ Omit now-unnecessary calls to to_uchar.
+ * src/m4.h: Include c-ctype.h instead of ctype.h.
+
+2020-07-11 Paul Eggert <eggert@cs.ucla.edu>
+
+ Regenerate bootstrap
+
+ Convert m4.texi from Latin-1 to UTF-8
+ * HACKING: Texinfo 4.11 and Autoconf 2.63 are now prereqs.
+ * doc/m4.texi: Convert to UTF-8.
+
+2020-07-05 Paul Eggert <eggert@cs.ucla.edu>
+
+ Port to recent GCC with --enable-gcc-warnings
+ * m4/gnulib-cache.m4: Add attribute, verify.
+ * src/m4.c (m4_failure, m4_failure_at_line): New functions.
+ These replace all uses of M4ERROR ((EXIT_FAILURE, ...)) and
+ M4ERROR_WITH_LINE ((EXIT_FAILURE, ...), so that the compiler can
+ deduce they do not return.
+ * src/m4.h: Include attribute.h, verify.h.
+ (M4_GNUC_ATTRIBUTE, M4_GNUC_UNUSED, M4_GNUC_PRINTF)
+ (M4_GNUC_NORETURN, M4_GNUC_PURE): Remove.
+ All uses replaced by corresponding attributes from attribute.h.
+ Also, use attribute.h’s FALLTHROUGH macro as needed in all files.
+ * src/macro.c (expand_macro): Cast to uintptr_t instead of to char *
+ to pacify GCC alignment warning.
+
+ maint: update copyright date
+ Arrived at via:
+ make update-copyright
+ gl/build-aux/inline-source gl/build-aux/bootstrap.in > bootstrap
+
+ build: adjust to gnulib changes
+ * configure.ac: Require Autoconf 2.63; needed by Gnulib.
+ * m4/gnulib-cache.m4: Regenerate.
+
+2020-07-05 Bruno Haible <bruno@clisp.org>
+
+ Update after gnulib changed
+ * src/output.c (m4_tmpfile, m4_tmpopen): Update fopen_temp invocations.
+ * gl/lib/clean-temp.c.diff: Remove file, no longer needed.
+
+2020-07-05 Paul Eggert <eggert@cs.ucla.edu>
+
+ build: update gnulib submodule to latest
+
+2017-01-02 Eric Blake <eblake@redhat.com>
+
+ maint: bump copyright year
+ Needed to keep 'make syntax-check' passing.
+
+ * gnulib: Update to latest.
+ * bootstrap: Regenerate.
+ * all files: Use 'make update-copyright' to bump year.
+
2016-12-31 Eric Blake <eblake@redhat.com>
+ maint: post-release administrivia
+ * NEWS: Add header line for next release.
+ * .prev-version: Record previous version.
+ * cfg.mk (old_NEWS_hash): Auto-update.
+
version 1.4.18
* NEWS: Record release date.
projects / platform / upstream / m4.git / blobdiff