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, 22 insertions, 14 deletions

diff --git a/src/font.c b/src/font.c
index 920ec1e02b1..4a63700f790 100644
--- a/src/font.c
+++ b/src/font.c
@@ -1283,19 +1283,20 @@ font_unparse_xlfd (Lisp_Object font, int pixel_size, char *name, int nbytes)
     }
 
   val = AREF (font, FONT_SIZE_INDEX);
-  eassert (FIXED_OR_FLOATP (val) || NILP (val));
+  eassert (NUMBERP (val) || NILP (val));
   char font_size_index_buf[sizeof "-*"
                            + max (INT_STRLEN_BOUND (EMACS_INT),
                                   1 + DBL_MAX_10_EXP + 1)];
-  if (FIXNUMP (val))
+  if (INTEGERP (val))
     {
-      EMACS_INT v = XFIXNUM (val);
-      if (v <= 0)
+      intmax_t v = FIXNUMP (val) ? XFIXNUM (val) : bignum_to_intmax (val);
+      if (! (0 <= v && v <= TYPE_MAXIMUM (uprintmax_t)))
         v = pixel_size;
       if (v > 0)
         {
+          uprintmax_t u = v;
           f[XLFD_PIXEL_INDEX] = p = font_size_index_buf;
-          sprintf (p, "%"pI"d-*", v);
+          sprintf (p, "%"pMu"-*", u);
         }
       else
         f[XLFD_PIXEL_INDEX] = "*-*";
@@ -3324,8 +3325,9 @@ font_open_for_lface (struct frame *f, Lisp_Object entity, Lisp_Object *attrs, Li
           if (size == 0)
             {
               Lisp_Object ffsize = get_frame_param (f, Qfontsize);
-              size = (FIXED_OR_FLOATP (ffsize)
-                      ? POINT_TO_PIXEL (XFIXNUM (ffsize), FRAME_RES_Y (f)) : 0);
+              size = (NUMBERP (ffsize)
+                      ? POINT_TO_PIXEL (XFLOATINT (ffsize), FRAME_RES_Y (f))
+                      : 0);
             }
 #endif
         }
@@ -4503,7 +4505,7 @@ where
     if (variations[i])
       {
         int vs = (i < 16 ? 0xFE00 + i : 0xE0100 + (i - 16));
-        Lisp_Object code = INTEGER_TO_CONS (variations[i]);
+        Lisp_Object code = INT_TO_INTEGER (variations[i]);
         val = Fcons (Fcons (make_fixnum (vs), code), val);
       }
   return val;
@@ -4606,7 +4608,7 @@ DEFUN ("internal-char-font", Finternal_char_font, Sinternal_char_font, 1, 2, 0,
     return Qnil;
   Lisp_Object font_object;
   XSETFONT (font_object, face->font);
-  return Fcons (font_object, INTEGER_TO_CONS (code));
+  return Fcons (font_object, INT_TO_INTEGER (code));
 }
 
 #if 0
@@ -4735,7 +4737,7 @@ DEFUN ("open-font", Fopen_font, Sopen_font, 1, 3, 0,
        doc: /* Open FONT-ENTITY.  */)
   (Lisp_Object font_entity, Lisp_Object size, Lisp_Object frame)
 {
-  EMACS_INT isize;
+  intmax_t isize;
   struct frame *f = decode_live_frame (frame);
 
   CHECK_FONT_ENTITY (font_entity);
@@ -4744,11 +4746,17 @@ DEFUN ("open-font", Fopen_font, Sopen_font, 1, 3, 0,
     isize = XFIXNUM (AREF (font_entity, FONT_SIZE_INDEX));
   else
     {
-      CHECK_FIXNUM_OR_FLOAT (size);
-      if (FLOATP (size))
-        isize = POINT_TO_PIXEL (XFLOAT_DATA (size), FRAME_RES_Y (f));
+      CHECK_NUMBER (size);
+      if (BIGNUMP (size))
+        {
+          isize = bignum_to_intmax (size);
+          if (isize == 0)
+            args_out_of_range (font_entity, size);
+        }
       else
-        isize = XFIXNUM (size);
+        isize = (FLOATP (size)
+                 ? POINT_TO_PIXEL (XFLOAT_DATA (size), FRAME_RES_Y (f))
+                 : XFIXNUM (size));
       if (! (INT_MIN <= isize && isize <= INT_MAX))
         args_out_of_range (font_entity, size);
       if (isize == 0)