Improve bignum support for system types

Use bignums when Emacs converts to and from system types like
off_t for file sizes whose values can exceed fixnum range.
Formerly, Emacs sometimes generted floats and sometimes ad-hoc
conses of integers.  Emacs still accepts floats and conses for
these system types, in case some stray Lisp code is generating
them, though this usage is obsolescent.
* doc/lispref/files.texi (File Attributes):
* doc/lispref/hash.texi (Defining Hash):
* doc/lispref/nonascii.texi (Character Sets):
* doc/lispref/os.texi (User Identification):
* doc/lispref/processes.texi (System Processes):
* etc/NEWS:
Document changes.
* src/bignum.c (mpz_set_uintmax, make_biguint)
(mpz_set_uintmax_slow, bignum_to_intmax, bignum_to_uintmax):
New functions.
(mpz_set_intmax_slow): Implement via mpz_limbs_write,
to avoid the need for an extra pass through a negative number.
* src/charset.c (Fencode_char):
* src/composite.h (LGLYPH_SET_CODE):
* src/dired.c (file_attributes):
* src/dosfns.c, src/w32.c (list_system_processes)
(system_process_attributes):
* src/editfns.c (init_editfns, Fuser_uid, Fuser_real_uid)
(Fgroup_gid, Fgroup_real_gid, Femacs_pid):
* src/emacs-module.c (check_vec_index):
* src/fns.c (Fsafe_length):
* src/process.c (record_deleted_pid, Fprocess_id):
* src/sysdep.c (list_system_processes, system_process_attributes):
* src/xselect.c (x_own_selection, selection_data_to_lisp_data):
* src/xterm.c (set_wm_state):
* src/inotify.c (inotifyevent_to_event, add_watch)
(inotify_callback):
If an integer is out of fixnum range, use a bignum
instead of converting it to a float or a cons of integers.
* src/coding.c (Fdefine_coding_system_internal):
* src/frame.c (frame_windows_min_size)
(x_set_frame_parameters):
* src/fringe.c (Fdefine_fringe_bitmap):
* src/nsterm.m (mouseDown:):
* src/syntax.c (find_defun_start):
* src/w32fns.c (x_set_undecorated, w32_createwindow)
(w32_wnd_proc, Fx_create_frame, Fx_show_tip)
(w32_console_toggle_lock_key):
* src/w32inevt.c (key_event):
* src/w32proc.c (Fw32_get_locale_info):
Do not mishandle floats by treating their addresses as their
values.
* src/data.c (store_symval_forwarding):
* src/gnutls.c (Fgnutls_error_fatalp, Fgnutls_error_string):
* src/keyboard.c (command_loop_1, make_lispy_event):
* src/lread.c (read_filtered_event, read1)
(substitute_object_recurse):
* src/window.c (Fcoordinates_in_window_p, Fwindow_at)
(window_resize_apply, Fset_window_vscroll):
* src/xdisp.c (handle_single_display_spec, try_scrolling)
(redisplay_window, calc_pixel_width_or_height)
(calc_line_height_property, on_hot_spot_p):
* src/xfaces.c (check_lface_attrs):
* src/xselect.c (x_get_local_selection, cons_to_x_long)
(lisp_data_to_selection_data, clean_local_selection_data)
(x_check_property_data, x_fill_property_data):
(x_send_client_event):
Do not reject bignums.
* src/data.c (INTBIG_TO_LISP, intbig_to_lisp)
(uintbig_to_lisp):
Remove.  All uses removed.
* src/data.c (cons_to_unsigned, cons_to_signed):
* src/dbusbind.c (xd_signature, xd_extract_signed)
(xd_extract_unsigned):
* src/dispnew.c (sit_for):
* src/dosfns.c, src/w32.c (system_process_attributes):
* src/editfns.c (Fuser_full_name):
* src/fileio.c (file_offset):
* src/fileio.c (write_region):
* src/font.c (font_unparse_xlfd, font_open_for_lface, Fopen_font):
* src/frame.c (x_set_screen_gamma):
* src/frame.h (NUMVAL, FRAME_PIXEL_X_FROM_CANON_X)
(FRAME_PIXEL_Y_FROM_CANON_Y):
* src/image.c (parse_image_spec, x_edge_detection)
(compute_image_size):
* src/json.c (json_to_lisp):
* src/lcms.c (PARSE_LAB_LIST_FIELD, Flcms_cie_de2000)
(PARSE_XYZ_LIST_FIELD, PARSE_JCH_LIST_FIELD)
(PARSE_JAB_LIST_FIELD, PARSE_VIEW_CONDITION_FLOAT)
(Flcms_temp_to_white_point):
* src/nsimage.m (ns_load_image, setSizeFromSpec):
* src/process.c (Fsignal_process, handle_child_signal):
* src/sysdep.c (system_process_attributes):
* src/xdisp.c (calc_line_height_property):
Handle bignums.
* src/data.c (Fnumber_to_string): Use proper predicate name in
signal if the argument is not a number.
* src/lisp.h (make_uint): New function.
(INT_TO_INTEGER): New macro.
(FIXED_OR_FLOATP, CHECK_FIXNUM_OR_FLOAT)
(CHECK_FIXNUM_OR_FLOAT_COERCE_MARKER, INTEGER_TO_CONS)
(make_fixnum_or_float): Remove; no longer used.
* src/nsfns.m, src/w32fns.c, src/xfns.c (Fx_create_frame):
Reject floating-point min-width or min-height.
* src/process.c (handle_child_signal): Do not worry
about floating-point pids, as they are no longer generated.

1 files changed, 8 insertions, 9 deletions

diff --git a/src/dired.c b/src/dired.c
index b92cd2b9f01..c4cda400a06 100644
--- a/src/dired.c
+++ b/src/dired.c
@@ -867,7 +867,7 @@ Elements of the attribute list are:
  0. t for directory, string (name linked to) for symbolic link, or nil.
  1. Number of links to file.
  2. File uid as a string or a number.  If a string value cannot be
-  looked up, a numeric value, either an integer or a float, is returned.
+  looked up, an integer value is returned.
  3. File gid, likewise.
  4. Last access time, as a list of integers (HIGH LOW USEC PSEC) in the
   same style as (current-time).
@@ -877,7 +877,6 @@ Elements of the attribute list are:
  6. Last status change time, likewise.  This is the time of last change
   to the file's attributes: owner and group, access mode bits, etc.
  7. Size in bytes.
-  This is a floating point number if the size is too large for an integer.
  8. File modes, as a string of ten letters or dashes as in ls -l.
  9. An unspecified value, present only for backward compatibility.
 10. inode number.  If it is larger than what an Emacs integer can hold,
@@ -1012,10 +1011,10 @@ file_attributes (int fd, char const *name,
 		make_fixnum (s.st_nlink),
 		(uname
 		 ? DECODE_SYSTEM (build_unibyte_string (uname))
-		 : make_fixnum_or_float (s.st_uid)),
+		 : INT_TO_INTEGER (s.st_uid)),
 		(gname
 		 ? DECODE_SYSTEM (build_unibyte_string (gname))
-		 : make_fixnum_or_float (s.st_gid)),
+		 : INT_TO_INTEGER (s.st_gid)),
 		make_lisp_time (get_stat_atime (&s)),
 		make_lisp_time (get_stat_mtime (&s)),
 		make_lisp_time (get_stat_ctime (&s)),
@@ -1024,14 +1023,14 @@ file_attributes (int fd, char const *name,
 		   files of sizes in the 2-4 GiB range wrap around to
 		   negative values, as this is a common bug on older
 		   32-bit platforms.  */
-		make_fixnum_or_float (sizeof (s.st_size) == 4
-				      ? s.st_size & 0xffffffffu
-				      : s.st_size),
+		INT_TO_INTEGER (sizeof (s.st_size) == 4
+			    ? s.st_size & 0xffffffffu
+			    : s.st_size),
 
 		make_string (modes, 10),
 		Qt,
-		INTEGER_TO_CONS (s.st_ino),
-		INTEGER_TO_CONS (s.st_dev));
+		INT_TO_INTEGER (s.st_ino),
+		INT_TO_INTEGER (s.st_dev));
 }
 
 DEFUN ("file-attributes-lessp", Ffile_attributes_lessp, Sfile_attributes_lessp, 2, 2, 0,