(Fsafe_length): Return a float if the value is not representable
as a fixnum. This shouldn't happen except in contrived situations.
Use same QUIT_COUNT_HEURISTIC as Flength now does.
Use EMACS_INT, not int, to avoid unwanted truncation on 64-bit hosts.
Check for QUIT every 1024 entries rather than every other entry;
that's faster and is responsive enough. Report an error instead of
overflowing an integer.
(header_size, word_size): New constants.
(allocate_vectorlike): Don't check size overflow here.
(allocate_vector): Check it here instead, since this is the only
caller of allocate_vectorlike that could cause overflow.
Check that the new vector's length is representable as a fixnum.
The previous code was bogus. For example, next_almost_prime (32)
returned 39, which is undesirable as it is a multiple of 3; and
next_almost_prime (24) returned 25, which is a multiple of 5 so
why was the code bothering to check for multiples of 7?
This partly undoes my 2011-03-30 change, which replaced int with size_t.
Back then I didn't know that the Emacs coding style prefers signed int.
Also, in the meantime I found a few more instances where arguments
were being counted with int, which may truncate counts on 64-bit
machines, or EMACS_INT, which may be unnecessarily wide.
* lisp.h (struct Lisp_Subr.function.aMANY)
(DEFUN_ARGS_MANY, internal_condition_case_n, safe_call):
Arg counts are now ptrdiff_t, not size_t.
All variadic functions and their callers changed accordingly.
(struct gcpro.nvars): Now size_t, not size_t. All uses changed.
* bytecode.c (exec_byte_code): Check maxdepth for overflow,
to avoid potential buffer overrun. Don't assume arg counts fit in 'int'.
* callint.c (Fcall_interactively): Check arg count for overflow,
to avoid potential buffer overrun. Use signed char, not 'int',
for 'varies' array, so that we needn't bother to check its size
calculation for overflow.
* editfns.c (Fformat): Use ptrdiff_t, not EMACS_INT, to count args.
* eval.c (apply_lambda):
* fns.c (Fmapconcat): Use XFASTINT, not XINT, to get args length.
(struct textprop_rec.argnum): Now ptrdiff_t, not int. All uses changed.
(mapconcat): Use ptrdiff_t, not int and EMACS_INT, to count args.
The symptom was `make custom-dep' failing with "Unknown terminal type".
This is caused by `display-buffer' trying to pop-up a frame in batch mode.
I think this cus-dep change may be just papering over the immediate
manifestation of the underlying problem.
* lisp/cus-dep.el (custom-make-dependencies): Use up command-line-args-left.
* help.el (help-window): Remove variable.
(help-window-point-marker, temp-buffer-max-height)
(temp-buffer-resize-mode, help-window-select): Rewrite doc-strings.
(help-print-return-message): Don't set help-window.
(resize-temp-buffer-window): Rewrite cod eand doc-string.
(help-window-setup-finish): Remove.
(help-window-display-message, help-window-setup)
(with-help-window): Major rewrite based on new
display-buffer-window variable.
* help-mode.el (help-mode-finish): Remove help-window related
code.
* view.el (view-exits-all-viewing-windows): Remove reference to
view-return-to-alist in doc-string.
(view-return-to-alist): Make obsolete.
(view-buffer): Call pop-to-buffer-same-window and remove
undo-window code.
(view-buffer-other-window): Call pop-to-buffer-other-window and
simplify code. Ignore second argument.
(view-buffer-other-frame): Call pop-to-buffer-other-frame and
simplify code. Ignore second argument.
(view-return-to-alist-update): Make obsolete.
(view-mode-enter): Rename second argument to QUIT-RESTORE.
Rewrite using quit-restore window parameters.
(view-mode-exit): Rename second argument to EXIT-ONLY. Rewrite
using quit-restore-window.
(View-exit, View-exit-and-edit, View-leave, View-quit)
(View-quit-all, View-kill-and-leave): Call view-mode-exit with
appropriate arguments.
(view-end-message): Use quit-restore window parameter.
* xterm.c (x_term_init):
* xfns.c (x_set_border_pixel):
* widget.c (create_frame_gcs): Remove casts to unsigned long etc.
These aren't needed now that we assume ANSI C.
This doesn't fix any bugs. Use int to hold character, instead
of constantly refetching from Emacs object. Use XFASTINT, not
XINT, for value known to be a character. Don't bother comparing
a single byte to 0400, as it's always less.
Without this fix, on a 64-bit host (aset S 0 4294967386) would
incorrectly succeed when S was a string, because 4294967386 was
truncated before it was used.
(fill_gstring_body, composition_compute_stop_pos): Use int, not
EMACS_INT, for values that are known to be in character range.
This doesn't fix any bugs but is the usual style inside Emacs and
may generate better code on 32-bit machines.
This is for reasons similar to the recent CHAR_STRING fix.
* charset.c (Fencode_char): Check that character arg is actually
a character. Pass an int to ENCODE_CHAR.
* charset.h (ENCODE_CHAR): Verify that the character argument is no
wider than 'int', as a compile-time check to prevent future regressions
in this area.
Otherwise, CHAR_STRING would do the wrong thing on a 64-bit platform,
by silently ignoring the top 32 bits, allowing some values
that were far too large to be valid characters.
* character.h: Include <verify.h>.
(CHAR_STRING, CHAR_STRING_ADVANCE): Verify that the character
arguments are no wider than unsigned, as a compile-time check
to prevent future regressions in this area.
* data.c (Faset):
* editfns.c (Fchar_to_string, general_insert_function, Finsert_char):
(Fsubst_char_in_region):
* fns.c (concat):
* xdisp.c (decode_mode_spec_coding):
Adjust to CHAR_STRING's new requirement.
* editfns.c (Finsert_char, Fsubst_char_in_region):
* fns.c (concat): Check that character args are actually
characters. Without this test, these functions did the wrong
thing with wildly out-of-range values on 64-bit hosts.
* frame.c (make_frame): Call other_buffer_safely instead of
other_buffer.
* window.c (temp_output_buffer_show): Call display_buffer with
second argument Vtemp_buffer_show_specifiers and reset latter
immediately after the call.
(Vtemp_buffer_show_specifiers): New variable.
(auto_window_vscroll_p, next_screen_context_lines)
(Vscroll_preserve_screen_position): Remove leading asterisks from
doc-strings.
