Mercurial > hg > xemacs-beta
annotate src/strcat.c @ 5562:855b667dea13
Drop cl-macro-environment in favour of byte-compile-macro-environment.
lisp/ChangeLog addition:
2011-09-04 Aidan Kehoe <kehoea@parhasard.net>
* bytecomp-runtime.el:
* bytecomp-runtime.el (byte-compile-macro-environment): Moved from
bytecomp.el.
* bytecomp.el:
* bytecomp.el (byte-compile-initial-macro-environment):
Add implementations for #'load-time-value, #'labels here, now
cl-macs respects byte-compile-macro-environment.
* bytecomp.el (byte-compile-function-environment):
* bytecomp.el (byte-compile-macro-environment): Removed.
* bytecomp.el (symbol-value):
* bytecomp.el (byte-compile-symbol-value): Removed.
* cl-extra.el (cl-macroexpand-all):
* cl-macs.el:
* cl-macs.el (bind-block):
* cl-macs.el (cl-macro-environment): Removed.
* cl-macs.el (cl-transform-lambda):
* cl-macs.el (load-time-value):
* cl-macs.el (block):
* cl-macs.el (flet):
* cl-macs.el (labels):
* cl-macs.el (macrolet):
* cl-macs.el (symbol-macrolet):
* cl-macs.el (lexical-let):
* cl-macs.el (apply):
* cl-macs.el (nthcdr):
* cl-macs.el (getf):
* cl-macs.el (substring):
* cl-macs.el (values):
* cl-macs.el (get-setf-method):
* cl-macs.el (cl-setf-do-modify):
* cl.el:
* cl.el (cl-macro-environment): Removed.
* cl.el (cl-macroexpand):
* obsolete.el (cl-macro-environment): Moved here.
Drop cl-macro-environment, in favour of
byte-compile-macro-environment; make the latter available in
bytecomp-runtime.el. This makes byte-compile-macro-environment far
less useless, since previously code that used cl-macs would ignore
it when calling #'cl-macroexpand-all.
Add byte-compiler-specific implementations for #'load-time-value,
#'labels. The latter is very nice indeed; it avoids the run-time
consing of the current implementation, is fully lexical and avoids
the run-time shadowing of symbol function slots that flet uses. It
would now be reasonable to move most core uses of flet to use
labels instead. Non-core code can't rely on print-circle for
mutually recursive functions, though, so it's less of an evident
win.
author | Aidan Kehoe <kehoea@parhasard.net> |
---|---|
date | Sun, 04 Sep 2011 20:37:55 +0100 |
parents | 2aa9cd456ae7 |
children |
rev | line source |
---|---|
428 | 1 /* Copyright (C) 1991 Free Software Foundation, Inc. |
2 This file is part of the GNU C Library. | |
3 | |
5405 | 4 The GNU C Library is free software: you can redistribute it and/or modify it |
5 under the terms of the GNU General Public License as published by the | |
6 Free Software Foundation, either version 3 of the License, or (at your | |
7 option) any later version. | |
428 | 8 |
5405 | 9 The GNU C Library is distributed in the hope that it will be useful, but WITHOUT |
10 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 for more details. | |
428 | 13 |
5405 | 14 You should have received a copy of the GNU General Public License |
15 along with the GNU C Library. If not, see <http://www.gnu.org/licenses/>. */ | |
428 | 16 |
17 /* Synched up with: Not in FSF. */ | |
18 | |
19 # include <config.h> | |
20 # ifndef REGISTER /* Strictly enforced in 20.3 */ | |
21 # define REGISTER | |
22 # endif | |
23 | |
24 /* In HPUX 10 the strcat function references memory past the last byte of | |
25 the string! This will core dump if the memory following the last byte is | |
26 not mapped. | |
27 | |
442 | 28 Here is a correct version from, glibc 1.09. |
428 | 29 */ |
30 | |
31 char *strcat (char *dest, const char *src); | |
32 | |
33 /* Append SRC on the end of DEST. */ | |
34 char * | |
35 strcat (char *dest, const char *src) | |
36 { | |
37 REGISTER char *s1 = dest; | |
442 | 38 REGISTER const char *s2 = src; |
428 | 39 char c; |
40 | |
41 /* Find the end of the string. */ | |
42 do | |
43 c = *s1++; | |
44 while (c != '\0'); | |
45 | |
46 /* Make S1 point before the next character, so we can increment | |
47 it while memory is read (wins on pipelined cpus). */ | |
48 s1 -= 2; | |
49 | |
50 do | |
51 { | |
52 c = *s2++; | |
53 *++s1 = c; | |
54 } | |
55 while (c != '\0'); | |
56 | |
57 return dest; | |
58 } |