Thanks to Dmitry Gutov <dgutov@yandex.ru> for running many
benchmarks and for useful discussions.
* src/json.c (json_make_string): Speed up parsing of JSON
strings by optimizing the normal case of a valid UTF-8 string
being returned from libjansson. (Bug#31138)
Stefan Monnier pointed out examples like (funcall `(closure
,(let ((cycle (list nil))) (setcdr cycle cycle)) () a)),
where the user can set Vinternal_interpreter_environment
indirectly.
* src/eval.c (Fsetq): Revert recent change, going back to Fassq.
Although the lisp.h macros really need improvement,
INTEGER_TO_INT is not the right way to go about it, as it
causes conversion from intmax_t to uintmax_t and back again,
which can cause a signal if the value is negative.
* src/lisp.h (INTEGER_TO_INT, ranged_integer_to_int)
(ranged_integer_to_uint): Remove, reverting recent changes to
this file.
* src/json.c (lisp_to_json): Revert to previous code,
as the change messes up with uintmax_t<->intmax_t conversion.
This is similar to CONS_TO_INTEGER. The inverse (INT_TO_INTEGER)
already exists.
* src/lisp.h (INTEGER_TO_INT): New macro.
(ranged_integer_to_int, ranged_integer_to_uint): New
functions.
* src/json.c (lisp_to_json): Use helper macro.
* emacs-module.c (module_make_string): Use make_unibyte_string, which
doesn’t require its argument to be null-terminated. Since it always
returns a heap-allocated string, we don’t have to copy it any more
while decoding.
(module_decode): New helper function.
Factor out conversions into helper functions to provide a simpler
interface.
* src/emacs-module.c (module_encode, module_decode_copy): New helper
functions.
(module_make_function, module_copy_string_contents)
(module_make_string): Use them.
Now that CATCHER_ALL catches signals as well, we can simplify
MODULE_HANDLE_NONLOCAL_EXIT a bit.
* src/emacs-module.c (MODULE_SETJMP, MODULE_SETJMP_1): Remove.
(MODULE_HANDLE_NONLOCAL_EXIT): Inline MODULE_SETJMP and
MODULE_SETJMP_1.
It doesn’t work anymore, and these days ‘gcc -fsanitize=address’
does a better job anyway.
* configure.ac: Remove the option.
* configure.ac (ac_xmalloc_overrun, XMALLOC_OVERRUN_CHECK):
* src/alloc.c (XMALLOC_OVERRUN_CHECK_OVERHEAD)
(XMALLOC_OVERRUN_CHECK_SIZE, XMALLOC_OVERRUN_SIZE_SIZE)
(xmalloc_overrun_check_header, xmalloc_overrun_check_trailer)
(xmalloc_put_size, xmalloc_get_size, overrun_check_malloc)
(overrun_check_realloc, overrun_check_free):
Remove. All uses removed.
* etc/NEWS: Mention this.
Because XPNTR now uses ATTRIBUTE_NO_SANITIZE_UNDEFINED,
it can be simplified.
* src/alloc.c (macro_PNTR_ADD, PNTR_ADD, macro_XPNTR): Remove.
(XPNTR): Open-code rather than using the removed macros and
functions. Also, simplify by using LISP_WORD_TAG.
* src/pdumper.c (dump_charset): Use alignof (struct charset),
not alignof (int), since struct charset might be more strictly
aligned than int. I think this is just a minor performance
issue, but we might as well use the correct alignment.
(drain_reloc_list): Use an alignment instead of a size for the
output alignment. This prevents undefined behavior when
alignof (struct emacs_reloc) == 8 and sizeof (dump_off) == 4
when building on x86-64 with gcc -fsanitize=undefined.
* src/pdumper.c (dump_bitset_clear):
Pacify -fsanitize=undefined by avoiding memset (NULL, x, 0),
which strictly speaking has undefined behavior although it
works on all production platforms I know.
* src/alloc.c (XPNTR): Add ATTRIBUTE_NO_SANITIZE_UNDEFINED and
remove ATTRIBUTE_UNUSED. Do not define as a macro, so that
ATTRIBUTE_NO_SANITIZE_UNDEFINED works.
* src/lisp.h (lisp_h_XSYMBOL): Remove. All uses removed.
With recent GCC the macro does not work with -fsanitize=undefined,
and the macro can be omitted as its only function is to optimize -O0.
Revert the double-free bug that I introduced in
2019-03-11T15:20:54Z!eggert@cs.ucla.edu.
* src/pdumper.c (dump_mmap_reset): Do not free the private member;
that’s the release function’s job.
(dump_mm_heap_cb_release): Free cb if its refcount goes to zero.
(dump_mmap_contiguous_heap): Mention memory leak in comment.
Since DEFSYM doesn't by itself do anything and make-docfile ignores
preprocessor statements, conditional compilation of DEFSYMs is
ineffective.
* src/data.c (syms_of_data): Remove ineffective #ifdefs.
Even if Emacs is compiled without module support, we don't have to
comment out every bit of user pointer support. Defining the basic
structures and functions and detecting user pointers in switch
statements is harmless, and we're already doing the same for module
functions. Removing these #ifdefs makes the code a bit easier to
read.
* src/lisp.h (PVEC_USER_PTR, struct Lisp_User_Ptr, USER_PTRP)
(XUSER_PTR): Define unconditionally.
* src/data.c (Ftype_of):
* src/alloc.c (cleanup_vector):
* src/print.c (print_vectorlike):
* src/pdumper.c (dump_vectorlike): Remove #ifdef for user pointers.
This partially reverts commit
09b2b8a5ce.
* src/alloc.c (mark_maybe_pointer): Remove special-casing of tagged
pointers. After commit 09d746dad3,
modules no longer rely on tagged pointers.
* src/eval.c (eval_sub): Check whether Fassq returns Qnil,
not whether it returns a cons, as NILP is faster than CONSP
nowadays. Remove incorrect comment “only original_fun and
original_args have values that will be used below”; instead,
move declarations around so that the set of variables with
useful values is obvious.
See Bug#31676.
* lisp/emacs-lisp/byte-run.el
(byte-run--unescaped-character-literals-warning): New defun.
* src/lread.c (load_warn_unescaped_character_literals): Use new defun.
(syms_of_lread): Define symbol for new defun.
* lisp/emacs-lisp/bytecomp.el (byte-compile-from-buffer): Use new
defun.
* test/src/lread-tests.el (lread-tests--unescaped-char-literals):
test/lisp/emacs-lisp/bytecomp-tests.el
(bytecomp-tests--unescaped-char-literals): Adapt unit tests.
In some cases, we never specbind internal objects, so they don't have
to be symbols. Rather than using DEFSYM/DEFVAR and then uninterning
the symbols, use plain static variables. Call staticpro for all of
them, to protect them from the garbage collector.
* src/eval.c (syms_of_eval): Use a static variable for
Qcatch_all_memory_full.
* src/emacs-module.c (syms_of_module): Use static variables for
Vmodule_refs_hash, Vmodule_runtimes, and Vmodule_environments.
This has never worked and caused issues such as Bug#30460.
* src/process.c (Fmake_process): Don't accept :stop key any more.
(syms_of_process): Define needed symbol 'null'.
* test/src/process-tests.el (make-process/stop): New unit test.
* doc/lispref/processes.texi (Asynchronous Processes): Remove :stop
key from manual.
In all cases where we use a CATCHER_ALL handler we also want to catch
signals. Therefore have 'signal' respect CATCHER_ALL. Adapt internal
interfaces so that handlers can distinguish among the two types of
nonlocal exits in CATCHER_ALL handlers.
* src/lisp.h (enum nonlocal_exit): New enum.
(struct handler): Add member 'nonlocal_exit' to hold the type of
nonlocal exit during stack unwinding.
* src/eval.c (signal_or_quit): Also respect CATCHER_ALL handlers.
(unwind_to_catch): Store nonlocal exit type in catch structure.
(Fthrow, signal_or_quit): Adapt callers.
(internal_catch_all): Install only one handler. Give handler a
nonlocal exit type argument.
(internal_catch_all_1): Remove, no longer needed.
* src/emacs-module.c (MODULE_SETJMP): Install only one handler.
(module_handle_nonlocal_exit): New function to handle all nonlocal
exits.
(MODULE_SETJMP_1): Pass nonlocal exit type to handler function.
(module_handle_signal, module_handle_throw): Remove, no longer needed.
* src/json.c (json_handle_nonlocal_exit): New helper function.
(json_insert_callback): Adapt to change in 'internal_catch_all'.
a1c53d4 (origin/emacs-26) * admin/admin.el (make-manuals-dist--1): Up...
d0f745f Document some compilation-mode faces
23ccba0 Mention the assignment form in "Copyright Assignment"
0f5568e Fix confusing wording in the user manual
70ec392 Fix the MSDOS build when running under CWSDPMI
7a608fc * lisp/progmodes/python.el: Be more careful about temp file r...
* src/ftfont.h (struct font_info): Replace member cr_font_face of type
cairo_font_face_t * with cr_scaled_font of type cairo_scaled_font_t *.
* src/ftcrfont.c: Include math.h for floor, ceiling, and lround.
(ftcrfont_glyph_extents): Use cairo_scaled_font_glyph_extents.
(ftcrfont_open): Create cairo_scaled_font_t object and set it to
cr_scaled_font member of struct font_info.
(ftcrfont_close): Use cairo_scaled_font_destroy.
(ftcrfont_draw): Use cairo_set_scaled_font.
