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2026-05-20Avoid crash in doprntPip Cet
* src/doprnt.c (doprnt): Don't access string[-1].
2026-01-01; Add 2026 to copyright years.Sean Whitton
2025-02-22; Fix typosStefan Kangas
2025-01-27Fix buffer overflows in doprnt (bug#75900)Pip Cet
* src/doprnt.c (doprnt): Clear rest of buffer on multibyte overflow. Always decrement bufsize when writing a byte.
2025-01-27doprnt %X supportPaul Eggert
* src/doprnt.c (doprnt): Also support %X, since callers now use %X.
2025-01-26Simplify make_formatted_string APIPaul Eggert
From a suggestion by Pip Cet. * src/alloc.c (make_formatted_string): Omit first argument, to simplify the calling convention. All callers changed. * src/doprnt.c (doprnt): Also support %u. Update doc.
2025-01-01Update copyright year to 2025Paul Eggert
Run "TZ=UTC0 admin/update-copyright".
2024-01-02Merge from savannah/emacs-29Po Lu
dc4e6b13296 ; Update copyright years in more files 64b37776318 ; Run set-copyright from admin.el 8e1c56ae467 ; Add 2024 to copyright years # Conflicts: # doc/misc/modus-themes.org # doc/misc/texinfo.tex # etc/NEWS # etc/refcards/ru-refcard.tex # etc/themes/modus-operandi-theme.el # etc/themes/modus-themes.el # etc/themes/modus-vivendi-theme.el # lib/alloca.in.h # lib/binary-io.h # lib/c-ctype.h # lib/c-strcasecmp.c # lib/c-strncasecmp.c # lib/careadlinkat.c # lib/cloexec.c # lib/close-stream.c # lib/diffseq.h # lib/dup2.c # lib/filemode.h # lib/fpending.c # lib/fpending.h # lib/fsusage.c # lib/getgroups.c # lib/getloadavg.c # lib/gettext.h # lib/gettime.c # lib/gettimeofday.c # lib/group-member.c # lib/malloc.c # lib/md5-stream.c # lib/md5.c # lib/md5.h # lib/memmem.c # lib/memrchr.c # lib/nanosleep.c # lib/save-cwd.h # lib/sha1.c # lib/sig2str.c # lib/stdlib.in.h # lib/strtoimax.c # lib/strtol.c # lib/strtoll.c # lib/time_r.c # lib/xalloc-oversized.h # lisp/auth-source-pass.el # lisp/emacs-lisp/lisp-mnt.el # lisp/emacs-lisp/timer.el # lisp/info-look.el # lisp/jit-lock.el # lisp/loadhist.el # lisp/mail/rmail.el # lisp/net/ntlm.el # lisp/net/webjump.el # lisp/progmodes/asm-mode.el # lisp/progmodes/project.el # lisp/progmodes/sh-script.el # lisp/textmodes/flyspell.el # lisp/textmodes/reftex-toc.el # lisp/textmodes/reftex.el # lisp/textmodes/tex-mode.el # lisp/url/url-gw.el # m4/alloca.m4 # m4/clock_time.m4 # m4/d-type.m4 # m4/dirent_h.m4 # m4/dup2.m4 # m4/euidaccess.m4 # m4/fchmodat.m4 # m4/filemode.m4 # m4/fsusage.m4 # m4/getgroups.m4 # m4/getloadavg.m4 # m4/getrandom.m4 # m4/gettime.m4 # m4/gettimeofday.m4 # m4/gnulib-common.m4 # m4/group-member.m4 # m4/inttypes.m4 # m4/malloc.m4 # m4/manywarnings.m4 # m4/mempcpy.m4 # m4/memrchr.m4 # m4/mkostemp.m4 # m4/mktime.m4 # m4/nproc.m4 # m4/nstrftime.m4 # m4/pathmax.m4 # m4/pipe2.m4 # m4/pselect.m4 # m4/pthread_sigmask.m4 # m4/readlink.m4 # m4/realloc.m4 # m4/sig2str.m4 # m4/ssize_t.m4 # m4/stat-time.m4 # m4/stddef_h.m4 # m4/stdint.m4 # m4/stdio_h.m4 # m4/stdlib_h.m4 # m4/stpcpy.m4 # m4/strnlen.m4 # m4/strtoimax.m4 # m4/strtoll.m4 # m4/time_h.m4 # m4/timegm.m4 # m4/timer_time.m4 # m4/timespec.m4 # m4/unistd_h.m4 # m4/warnings.m4 # nt/configure.bat # nt/preprep.c # test/lisp/register-tests.el
2024-01-02; Add 2024 to copyright yearsPo Lu
2023-05-17Prefer C23 ckd_* to Gnulib *_WRAPV macrosPaul Eggert
C23 has added ckd_add etc. macros with functionality equivalent to the older Gnulib INT_ADD_WRAPV macros, so switch to the more-standard names. * admin/merge-gnulib (GNULIB_MODULES): Add stdckdint. This merely makes the dependency explicit, as we were already using this Gnulib module indirectly. * lib-src/etags.c, src/lisp.h: Include stdckdint.h. * lib-src/etags.c (xnmalloc, xnrealloc): * src/alloc.c (xnmalloc, xnrealloc, xpalloc, Fmake_string) (mark_memory): * src/bignum.c (emacs_mpz_pow_ui): * src/buffer.c (record_overlay_string, overlay_strings): * src/bytecode.c (exec_byte_code): * src/casefiddle.c (do_casify_multibyte_string): * src/ccl.c (ccl_driver, Fccl_execute_on_string): * src/character.c (char_width, c_string_width) (lisp_string_width, count_size_as_multibyte) (string_escape_byte8): * src/cmds.c (internal_self_insert): * src/coding.c (coding_alloc_by_realloc, produce_chars): * src/data.c (arith_driver): * src/dispnew.c (realloc_glyph_pool, init_display_interactive): * src/doprnt.c (parse_format_integer): * src/editfns.c (Freplace_buffer_contents, str2num) (styled_format): * src/emacs-module.c (module_global_reference_p) (module_make_global_ref, module_funcall): * src/eval.c (max_ensure_room): * src/fileio.c (blocks_to_bytes): * src/fns.c (Ffillarray): * src/font.c (font_intern_prop): * src/frame.c (check_frame_pixels): * src/gnutls.c (gnutls_hex_string, gnutls_symmetric_aead): * src/gtkutil.c (get_utf8_string): * src/haikuterm.c (haiku_term_init): * src/image.c (xbm_scan, image_to_emacs_colors) (image_detect_edges, png_load_body): * src/keyboard.c (Frecursion_depth): * src/keymap.c (Flookup_key, Fkey_description): * src/lisp.h (modiff_incr, SAFE_ALLOCA_LISP_EXTRA): * src/lread.c (read_bool_vector): * src/pgtkterm.c (pgtk_term_init): * src/regex-emacs.c (regex_compile): * src/term.c (encode_terminal_code): * src/termcap.c (tputs): * src/textconv.c (textconv_query): * src/timefns.c (timespec_ticks, lisp_time_hz_ticks) (Fdecode_time, check_tm_member): * src/tparam.c (tparam1): * src/w32term.c (w32_initialize_display_info): * src/xdisp.c (fill_column_indicator_column, decode_mode_spec): * src/xselect.c (selection_data_size, x_property_data_to_lisp): * src/xsmfns.c (smc_save_yourself_CB): * src/xterm.c (xm_setup_dnd_targets, x_sync_get_monotonic_time) (x_sync_current_monotonic_time, x_sync_note_frame_times) (x_display_set_last_user_time, x_term_init): Prefer the C23 stdckdint macros to their Gnulib intprops.h counterparts, since C23 is standard.
2023-01-01; Add 2023 to copyright years.Eli Zaretskii
2022-01-01; Add 2022 to copyright years.Eli Zaretskii
2021-06-16Eliminate some GCC warningsMattias Engdegård
* src/doprnt.c (exprintf, evxprintf): * src/lisp.h (exprintf, evxprintf): Don't use a pointer-to-const type for the `nonheapbuf` argument: although it is never dereferenced, GCC will warn when passing a pointer to uninitialised memory otherwise. * src/fns.c (sort_vector_copy, realize_face, realize_gui_face) (realize_tty_face): Use the same signatures in the prototypes as in the actual function definitions.
2021-01-01Update copyright year to 2021Paul Eggert
Run "TZ=UTC0 admin/update-copyright".
2020-11-29Allow doprint to handle multibyte chars in format (bug#44349)Alan Third
* src/doprnt.c (doprnt): Handle the case where fmtchar is the start of a multibyte character.
2020-11-09Simplify getting value of text-quoting-style (Bug#44471)Stefan Kangas
* src/doc.c (text_quoting_style): Remove function by merging it... (Ftext_quoting_style): ...here. Rename from Fget_quoting_style. (syms_of_doc): Update defsubr for Ftext_quoting_style. * src/lisp.h (enum text_quoting_style): Remove enum. * src/doprnt.c (doprnt): * src/editfns.c (styled_format): * lisp/help.el (substitute-command-keys): Update callers to use text-quoting-style.
2020-10-24Minor doprnt cleanup: remove memchr callPaul Eggert
* src/doprnt.c (doprnt): Remove unnecessary call to memchr.
2020-10-24Rename doprnt_nul to doprnt_non_null_endPaul Eggert
* src/doprnt.c (doprnt_non_null_end): Rename from doprnt_nul, as the old name was misleading (left over from a previous proposal). Caller changed.
2020-10-24Improve doprnt performancePaul Eggert
This patch implements some of my suggestions in Bug#8545, with further changes suggested by Eli Zaretskii (Bug#43439). * src/doprnt.c: Improve comments. (SIZE_BOUND_EXTRA): Now at top level, for parse_format_integer. (parse_format_integer): New static function, containing some of the old doprnt. Fix a bug that caused doprnt to infloop on formats like "%10s" that Emacs does not use. We could simplify doprnt further if we dropped support for these never-used formats. (doprnt_nul): New function. (doprnt): Use it. Change doprnt API to exit when either it finds NUL or reaches the character specified by FORMAT_END. In the typical case where FORMAT_END is null, take just one pass over FORMAT, not two. Assume C99 to make code clearer. Do not use malloc or alloca to allocate a copy of the format FMTCPY; instead, use a small fixed-size array FMTSTAR, and use '*' in that array to represent width and precision, passing them as separate int arguments. Use eassume to pacify GCC in switch statements.
2020-10-05Use the full name of the null byte/character, not its abbreviationAndreas Schwab
* lisp/subr.el (inhibit-nul-byte-detection): Make it an obsolete alias. * src/coding.c (setup_coding_system): Use original name. (detect_coding): Rename nul_byte_found => null_byte_found. (detect_coding_system): Use original name. Rename nul_byte_found => null_byte_found. (Fdefine_coding_system_internal): Use original name. (syms_of_coding): Rename inhibit-nul-byte-detection to inhibit-null-byte-detection. * src/w16select.c (get_clipboard_data): Rename nul_char to null_char. * src/json.c (check_string_without_embedded_nulls): Rename from check_string_without_embedded_nuls. (Fjson_parse_string): Adjust accordingly. * src/coding.h (enum define_coding_undecided_arg_index) (enum coding_attr_index): Rename ...nul_byte... to ...null_byte.... * lisp/info.el (info-insert-file-contents, Info-insert-dir): * lisp/international/mule.el (define-coding-system): * lisp/vc/vc-git.el (vc-git--call): * doc/lispref/nonascii.texi (Lisp and Coding Systems): Use original name.
2020-01-01Update copyright year to 2020Paul Eggert
Run "TZ=UTC0 admin/update-copyright $(git ls-files)".
2019-07-07Remove printmax_t etc.Paul Eggert
printmax_t etc. were needed only for platforms that lacked support for printing intmax_t. These platforms are now so obsolete that they are no longer practical porting targets. * src/image.c (gs_load): Fix unlikely buffer overrun discovered while making these changes. It was introduced in 2011-07-17T00:34:43!eggert@cs.ucla.edu. * src/lisp.h (printmax_t, uprintmax_t, pMd, pMu, pMx): Remove. All uses replaced by their standard counterparts intmax_t, uintmax_t, PRIdMAX, PRIuMAX, PRIxMAX.
2019-06-25Avoid some strlen work, primarily via strnlenPaul Eggert
* admin/merge-gnulib (GNULIB_MODULES): Add strnlen. * lib-src/etags.c (find_entries): * src/emacs.c (main): * src/nsmenu.m (parseKeyEquiv:): * src/nsterm.m (ns_xlfd_to_fontname): * src/term.c (vfatal): Prefer !*X to !strlen (X). * lib-src/etags.c (pfnote, add_regex): * lib-src/pop.c (pop_open): * lib-src/update-game-score.c (main): * lwlib/lwlib.c (lw_separator_p): * src/doprnt.c (doprnt): * src/emacs.c (main): * src/inotify.c (inotifyevent_to_event): * src/keyboard.c (menu_separator_name_p, parse_tool_bar_item): * src/sysdep.c (get_current_dir_name_or_unreachable): * src/xdisp.c (store_mode_line_string): Use strnlen to avoid unnecessary work with strlen. * lib-src/etags.c (Prolog_functions, prolog_pr) (Erlang_functions, erlang_func): Prefer ptrdiff_t to size_t when either will do. (prolog_pr, erlang_func): New arg LASTLEN, to avoid unnecessary strlen call. All callers changed. * lib/gnulib.mk.in, m4/gnulib-comp.m4: Regenerate. * lib/strnlen.c, m4/strnlen.m4: New files, copied from Gnulib. * lwlib/lwlib.c (lw_separator_p): * src/json.c (json_has_prefix): Use strncmp to avoid unecessary work with strlen + memcmp. * src/process.c (set_socket_option): Use SBYTES instead of strlen.
2019-03-21Fix misuses of NULL when talking about the NUL characterStefan Monnier
* lisp/subr.el (inhibit-null-byte-detection): Make it an obsolete alias. * src/coding.c (setup_coding_system): Use new name. (detect_coding): Rename null_byte_found => nul_byte_found. (detect_coding_system): Use new name. Rename null_byte_found => nul_byte_found. (Fdefine_coding_system_internal): Use new name. (syms_of_coding): Rename inhibit-null-byte-detection to inhibit-nul-byte-detection. * src/w16select.c (get_clipboard_data): null_char => nul_char. * src/json.c (check_string_without_embedded_nuls): Rename from check_string_without_embedded_nulls. (Fjson_parse_string): Adjust accordingly. * src/coding.h (enum define_coding_undecided_arg_index) (enum coding_attr_index): ...null_byte... => ...nul_byte.... * lisp/info.el (info-insert-file-contents, Info-insert-dir): * lisp/international/mule.el (define-coding-system): * lisp/vc/vc-git.el (vc-git--call): * doc/lispref/nonascii.texi (Lisp and Coding Systems): Use the new name.
2018-12-31Merge from origin/emacs-26Paul Eggert
2fcf2df Fix copyright years by hand 26bed8b Update copyright year to 2019 2814292 Fix value of default frame height. (Bug#33921)
2019-01-01Update copyright year to 2019Paul Eggert
Run 'TZ=UTC0 admin/update-copyright $(git ls-files)'.
2018-01-01Merge from origin/emacs-26Paul Eggert
63b04c11d5 Fix copyright years by hand 5c7dd8a783 Update copyright year to 2018 220a9ecba1 Merge from Gnulib 312c565566 Don't add empty keyboard macro to macro ring (Bug#24992) 39ca289a7a Allow customization of decoding of "man" command f8240815ea * etc/NEWS: Add security consideration note on passphrase ... 0c78822c70 Fix subtle problem with scroll-down when scroll-margin is ... acd289c5a4 Fix problems with indexing in User manual b240c7846b * lisp/help.el (describe-key): Only (copy-sequence elt) wh... e879a5444a * src/buffer.c (Frestore_buffer_modified_p): Fix bug#29846 81b1028b63 Improve documentation of 'inhibit-modification-hooks' and ... 7175496d7a Fix doc string of 'enable-recursive-minibuffers' 5b38406491 Fix documentation of delsel and of killing text # Conflicts: # etc/NEWS # etc/refcards/ru-refcard.tex
2018-01-01Update copyright year to 2018Paul Eggert
Run admin/update-copyright.
2017-12-03Omit exprintf if modules but no XPaul Eggert
* src/doprnt.c (exprintf): Do not define if HAVE_MODULES && !(have_X_WINDOWS || USE_X_TOOLKIT), as the modules code no longer uses exprintf.
2017-09-13Prefer HTTPS to FTP and HTTP in documentationPaul Eggert
Most of this change is to boilerplate commentary such as license URLs. This change was prompted by ftp://ftp.gnu.org's going-away party, planned for November. Change these FTP URLs to https://ftp.gnu.org instead. Make similar changes for URLs to other organizations moving away from FTP. Also, change HTTP to HTTPS for URLs to gnu.org and fsf.org when this works, as this will further help defend against man-in-the-middle attacks (for this part I omitted the MS-DOS and MS-Windows sources and the test tarballs to keep the workload down). HTTPS is not fully working to lists.gnu.org so I left those URLs alone for now.
2017-05-31Fix bug with "%%" in error formatPaul Eggert
* src/doprnt.c (doprnt): Format "%%" correctly. Problem reported by Philipp Stephani in: http://lists.gnu.org/archive/html/emacs-devel/2017-05/msg00901.html
2017-05-16Merge with gnulib, pacifying GCC 7Paul Eggert
This incorporates: 2017-05-16 manywarnings: update for GCC 7 2017-05-15 sys_select: Avoid "was expanded before it was required" * configure.ac (nw): Suppress GCC 7’s new -Wduplicated-branches and -Wformat-overflow=2 options, due to too many false alarms. * doc/misc/texinfo.tex, lib/strftime.c, m4/manywarnings.m4: Copy from gnulib. * m4/gnulib-comp.m4: Regenerate. * src/coding.c (decode_coding_iso_2022): Fix bug uncovered by -Wimplicit-fallthrough. * src/conf_post.h (FALLTHROUGH): New macro. Use it to mark all switch cases that fall through. * src/editfns.c (styled_format): Use !, not ~, on bool. * src/gtkutil.c (xg_check_special_colors): When using sprintf, don’t trust Gtk to output colors in [0, 1] range. (xg_update_scrollbar_pos): Avoid use of possibly-uninitialized bool; this bug was actually caught by Clang. * src/search.c (boyer_moore): Tell GCC that CHAR_BASE, if nonzero, must be a non-ASCII character. * src/xterm.c (x_draw_glyphless_glyph_string_foreground): Tell GCC that glyph->u.glyphless.ch must be a character.
2017-01-01Merge from origin/emacs-25Paul Eggert
2e2a806 Fix copyright years by hand 5badc81 Update copyright year to 2017
2016-12-31Update copyright year to 2017Paul Eggert
Run admin/update-copyright.
2016-09-30Limit <config.h>’s includesPaul Eggert
This follows up on recent problems with the fact that config.h includes stdlib.h etc.; some files need to include stdlib.h later. config.h generally should limit itself to includes that are universally safe; outside of MS-Windows, only stdbool.h makes the cut among the files currently included. So, move the other includes to just the files that need them (Bug#24506). * configure.ac (config_opsysfile): Remove, as this generic hook is no longer needed. * lib-src/etags.c, src/unexmacosx.c, src/w32.c, src/w32notify.c: * src/w32proc.c (_GNU_SOURCE): Remove, as it’s OK for config.h to do this now. * src/conf_post.h: Include <ms-w32.h>, instead of the generic config_opsysfile, for simplicity as this old way of configuring is now done only for the MS-Windows port. Do not include <ms-w32.h> if DEFER_MS_W32_H, for the benefit of the few files that want its effects later. Do not include <alloca.h>, <string.h>, or <stdlib.h>. Other files modified to include these headers as needed, or to not include headers that are no longer needed. * src/lisp.h: Include <alloca.h> and <string.h> here, since some of the inline functions need them. * src/regex.c: Include <alloca.h> if not emacs. (If emacs, we can rely on SAFE_ALLOCA.) There is no longer any need to worry about HAVE_ALLOCA_H. * src/unexmacosx.c: Rely on config.h not including stdlib.h. * src/w32.c, src/w32notify.c, src/w32proc.c (DEFER_MS_W32_H): Define before including <config.h> first, and include <ms-w32.h> after the troublesome headers.
2016-09-24Improve integer overflow handling a bitPaul Eggert
* src/charset.c (read_hex): Use INT_LEFT_SHIFT_OVERFLOW for clarity. The machine code is the same on my platform. * src/doprnt.c (doprnt): * src/emacs-module.c (module_funcall): * src/font.c (font_intern_prop): * src/keyboard.c (Frecursion_depth): * src/lread.c (read1): Use WRAPV macros instead of checking overflow by hand. * src/editfns.c (hi_time, time_arith, decode_time_components): * src/emacs-module.c (Fmodule_load): Simplify by using FIXNUM_OVERFLOW_P. * src/emacs-module.c: Include intprops.h. * src/xdisp.c (percent99): New function. (decode_mode_spec): Use it to simplify overflow avoidance and formatting of %p and %P.
2016-05-03Doc fixes for quotingPaul Eggert
* doc/emacs/text.texi, doc/lispintro/emacs-lisp-intro.texi: * doc/lispref/control.texi, doc/lispref/display.texi: * doc/lispref/help.texi, doc/lispref/strings.texi, lisp/subr.el: * src/callint.c, src/doprnt.c, src/editfns.c: Document quoting a bit more systematically. Problem reported by Alan Mackenzie (Bug#23425).
2016-03-10Rework C source files to avoid ^(Paul Eggert
Work around Bug#22884 by rewording comments and strings to avoid ‘(’ at the start of a line unless it starts a function. This change is a short-term hack; in the longer run we plan to fix cc-mode’s performance for C files that have ‘(’ at the start of a line in a comment or string.
2016-01-01Update copyright year to 2016Paul Eggert
Run admin/update-copyright.
2015-11-23module_format_fun_env fixesPaul Eggert
* src/doprnt.c (exprintf) [HAVE_MODULES]: Also define in this case. * src/emacs-module.c (module_format_fun_env): Convert path and sym to UTF-8. Don’t use VLAs, as the C11 standard says they’re optional, and anyway they can cause core dumps with large allocations. Use exprintf rather than snprintf, as exprintf handles arbitrarily long strings. Simplify the code a bit.
2015-09-25Avoid non-ASCII decoding errors in C src filesEli Zaretskii
* src/nsterm.m: * src/lisp.h: * src/editfns.c: * src/doprnt.c: Add 'coding' cookies -- these files include Unicode characters and should be decoded as UTF-8.
2015-08-14Low-level diagnostics now use ‘text-quoting-style’Paul Eggert
* src/doprnt.c (doprnt): Format ` and ' as per ‘text-quoting-style’. * src/xdisp.c (vmessage, message): Mention that the format should not contain ` or '.
2015-01-01Update copyright year to 2015Paul Eggert
Run admin/update-copyright.
2014-01-01Update copyright year to 2014 by running admin/update-copyright.Paul Eggert
2013-01-20* src/doprnt.c: Fix comment.Paul Eggert
2013-01-02Merge from emacs-24; up to 2012-12-06T01:39:03Z!monnier@iro.umontreal.caPaul Eggert
2013-01-01Update copyright notices for 2013.Paul Eggert
2012-12-02Fix xpalloc confusion after memory is exhausted.Paul Eggert
* alloc.c (xpalloc): Comment fix. * charset.c (Fdefine_charset_internal): If xpalloc exhausts memory and signals an error, do not clear charset_table_size, as charset_table is still valid. * doprnt.c (evxprintf): Clear *BUF after freeing it.
2012-09-15Port better to POSIX hosts lacking _setjmp.Paul Eggert
* configure.ac (HAVE__SETJMP, HAVE_SIGSETJMP): New symbols. (_setjmp, _longjmp): Remove. * src/lisp.h: Include <setjmp.h> here, since we use its symbols here. All instances of '#include <setjmp.h>' removed, if the only reason for the instance was because "lisp.h" was included. (sys_jmp_buf, sys_setjmp, sys_longjmp): New symbols. Unless otherwise specified, replace all uses of jmp_buf, _setjmp, and _longjmp with the new symbols. Emacs already uses _setjmp if available, so this change affects only POSIXish hosts that have sigsetjmp but not _setjmp, such as some versions of Solaris and Unixware. (Also, POSIX-2008 marks _setjmp as obsolescent.) * src/image.c (_setjmp, _longjmp) [HAVE_PNG && !HAVE__SETJMP]: New macros. (png_load_body) [HAVE_PNG]: (PNG_LONGJMP) [HAVE_PNG && PNG_LIBPNG_VER < 10500]: (PNG_JMPBUF) [HAVE_PNG && PNG_LIBPNG_VER >= 10500]: Use _setjmp and _longjmp rather than sys_setjmp and sys_longjmp, since PNG requires jmp_buf. This is the only exception to the general rule that we now use sys_setjmp and sys_longjmp. This exception is OK since this code does not change the signal mask or longjmp out of a signal handler. Fixes: debbugs:12446
2012-09-09Assume C89 or later for math functions.Paul Eggert
This simplifies the code, and makes it a bit smaller and faster, and (most important) makes it easier to clean up signal handling since we can stop worring about floating-point exceptions in library code. That was a problem before C89, but the problem went away many years ago on all practical Emacs targets. * configure.ac (frexp, fmod): Remove checks for these functions, as we now assume them. (FLOAT_CHECK_DOMAIN, HAVE_INVERSE_HYPERBOLIC, NO_MATHERR) (HAVE_EXCEPTION): Remove; no longer needed. * admin/CPP-DEFINES (HAVE_FMOD, HAVE_FREXP, FLOAT_CHECK_DOMAIN) (HAVE_INVERSE_HYPERBOLIC, NO_MATHERR): Remove. * src/data.c, src/image.c, src/lread.c, src/print.c: Don't include <math.h>; no longer needed. * src/data.c, src/floatfns.c (IEEE_FLOATING_POINT): Don't worry that it might be autoconfigured, as that never happens. * src/data.c (fmod): * src/doprnt.c (DBL_MAX_10_EXP): * src/print.c (DBL_DIG): Remove. C89 or later always defines these. * src/floatfns.c (HAVE_MATHERR, FLOAT_CHECK_ERRNO, FLOAT_CHECK_DOMAIN) (in_float, float_error_arg, float_error_arg2, float_error_fn_name) (arith_error, domain_error, domain_error2): Remove all this pre-C89 cruft. Do not include <errno.h> as that's no longer needed -- we simply return what C returns. All uses removed. (IN_FLOAT, IN_FLOAT2): Remove. All uses replaced with the wrapped code. (FLOAT_TO_INT, FLOAT_TO_INT2, range_error, range_error2): Remove. All uses expanded, as these macros are no longer used more than once and are now more trouble than they're worth. (Ftan): Use tan, not sin / cos. (Flogb): Assume C89 frexp. (fmod_float): Assume C89 fmod. (matherr) [HAVE_MATHERR]: Remove; no longer needed. (init_floatfns): Remove. All uses removed.
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