annotate src/strcat.c @ 1314:15a91d7ae2d1

[xemacs-hg @ 2003-02-20 08:16:21 by ben] check in makefile fixes et al Makefile.in.in: Major surgery. Move all stuff related to building anything in the src/ directory into src/. Simplify the dependencies -- everything in src/ is dependent on the single entry `src' in MAKE_SUBDIRS. Remove weirdo targets like `all-elc[s]', dump-elc[s], etc. mule/mule-msw-init.el: Removed. Delete this file. mule/mule-win32-init.el: New file, with stuff from mule-msw-init.el -- not just for MS Windows native, boys and girls! bytecomp.el: Change code inserted to catch trying to load a Mule-only .elc file in a non-Mule XEmacs. Formerly you got the rather cryptic "The required feature `mule' cannot be provided". Now you get "Loading this file requires Mule support". finder.el: Remove dependency on which directory this function is invoked from. update-elc.el: Don't mess around with ../src/BYTECOMPILE_CHANGE. Now that Makefile.in.in and xemacs.mak are in sync, both of them use NEEDTODUMP and the other one isn't used. dumped-lisp.el: Rewrite in terms of `list' and `nconc' instead of assemble-list, so we can have arbitrary forms, not just `when-feature'. very-early-lisp.el: Nuke this file. finder-inf.el, packages.el, update-elc.el, update-elc-2.el, loadup.el, make-docfile.el: Eliminate references to very-early-lisp. msw-glyphs.el: Comment clarification. xemacs.mak: Add macros DO_TEMACS, DO_XEMACS, and a few others; this macro section is now completely in sync with src/Makefile.in.in. Copy check-features, load-shadows, and rebuilding finder-inf.el from src/Makefile.in.in. The main build/dump/recompile process is now synchronized with src/Makefile.in.in. Change `WARNING' to `NOTE' and `error checking' to `error-checking' TO avoid tripping faux warnings and errors in the VC++ IDE. Makefile.in.in: Major surgery. Move all stuff related to building anything in the src/ directory from top-level Makefile.in.in to here. Simplify the dependencies. Rearrange into logical subsections. Synchronize the main compile/dump/build-elcs section with xemacs.mak, which is already clean and in good working order. Remove weirdo targets like `all-elc[s]', dump-elc[s], etc. Add additional levels of macros \(e.g. DO_TEMACS, DO_XEMACS, TEMACS_BATCH, XEMACS_BATCH, XEMACS_BATCH_PACKAGES) to factor out duplicated stuff. Clean up handling of "HEAP_IN_DATA" (Cygwin) so it doesn't need to ignore the return value from dumping. Add .NO_PARALLEL since various aspects of building and dumping must be serialized but do not always have dependencies between them (this is impossible in some cases). Everything related to src/ now gets built in one pass in this directory by just running `make' (except the Makefiles themselves and config.h, paths.h, Emacs.ad.h, and other generated .h files). console.c: Update list of possibly valid console types. emacs.c: Rationalize the specifying and handling of the type of the first frame. This was originally prompted by a workspace in which I got GTK to compile under C++ and in the process fixed it so it could coexist with X in the same build -- hence, a combined TTY/X/MS-Windows/GTK build is now possible under Cygwin. (However, you can't simultaneously *display* more than one kind of device connection -- but getting that to work is not that difficult. Perhaps a project for a bored grad student. I (ben) would do it but don't see the use.) To make sense of this, I added new switches that can be used to specifically indicate the window system: -x [aka --use-x], -tty \[aka --use-tty], -msw [aka --use-ms-windows], -gtk [aka --use-gtk], and -gnome [aka --use-gnome, same as --use-gtk]. -nw continues as an alias for -tty. When none have been given, XEmacs checks for other parameters implying particular device types (-t -> tty, -display -> x [or should it have same treatment as DISPLAY below?]), and has ad-hoc logic afterwards: if env var DISPLAY is set, use x (or gtk? perhaps should check whether gnome is running), else MS Windows if it exsits, else TTY if it exists, else stream, and you must be running in batch mode. This also fixes an existing bug whereby compiling with no x, no mswin, no tty, when running non- interactively (e.g. to dump) I get "sorry, must have TTY support". emacs.c: Turn on Vstack_trace_on_error so that errors are debuggable even when occurring extremely early in reinitialization. emacs.c: Try to make sure that the user can see message output under Windows (i.e. it doesn't just disappear right away) regardless of when it occurs, e.g. in the middle of creating the first frame. emacs.c: Define new function `emacs-run-status', indicating whether XEmacs is noninteractive or interactive, whether raw, post-dump/pdump-load or run-temacs, whether we are dumping, whether pdump is in effect. event-stream.c: It's "mommas are fat", not "momas are fat". Fix other typo. event-stream.c: Conditionalize in_menu_callback check on HAVE_MENUBARS, because it won't exist on w/o menubar support, lisp.h: More hackery on RETURN_NOT_REACHED. Cygwin v3.2 DOES complain here if RETURN_NOT_REACHED() is blank, as it is for GCC 2.5+. So make it blank only for GCC 2.5 through 2.999999999999999. Declare Vstack_trace_on_error. profile.c: Need to include "profile.h" to fix warnings. sheap.c: Don't fatal() when need to rerun Make, just stderr_out() and exit(0). That way we can distinguish between a dumping failing expectedly (due to lack of stack space, triggering another dump) and unexpectedly, in which case, we want to stop building. (or go on, if -K is given) syntax.c, syntax.h: Use ints where they belong, and enum syntaxcode's where they belong, and fix warnings thereby. syntax.h: Fix crash caused by an edge condition in the syntax-cache macros. text.h: Spacing fixes. xmotif.h: New file, to get around shadowing warnings. EmacsManager.c, event-Xt.c, glyphs-x.c, gui-x.c, input-method-motif.c, xmmanagerp.h, xmprimitivep.h: Include xmotif.h. alloc.c: Conditionalize in_malloc on ERROR_CHECK_MALLOC. config.h.in, file-coding.h, fileio.c, getloadavg.c, select-x.c, signal.c, sysdep.c, sysfile.h, systime.h, text.c, unicode.c: Eliminate HAVE_WIN32_CODING_SYSTEMS, use WIN32_ANY instead. Replace defined (WIN32_NATIVE) || defined (CYGWIN) with WIN32_ANY. lisp.h: More futile attempts to walk and chew gum at the same time when dealing with subr's that don't return.
author ben
date Thu, 20 Feb 2003 08:16:21 +0000
parents abe6d1db359e
children 2aa9cd456ae7
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1 /* Copyright (C) 1991 Free Software Foundation, Inc.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2 This file is part of the GNU C Library.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4 The GNU C Library is free software; you can redistribute it and/or
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5 modify it under the terms of the GNU Library General Public License as
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6 published by the Free Software Foundation; either version 2 of the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
7 License, or (at your option) any later version.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
8
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
9 The GNU C Library is distributed in the hope that it will be useful,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
12 Library General Public License for more details.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
13
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
14 You should have received a copy of the GNU Library General Public
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
15 License along with the GNU C Library; see the file COPYING.LIB. If
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
16 not, write to the Free Software Foundation, Inc., 675 Mass Ave,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
17 Cambridge, MA 02139, USA. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
18
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
19 /* Synched up with: Not in FSF. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
20
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
21 # include <config.h>
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
22 # ifndef REGISTER /* Strictly enforced in 20.3 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
23 # define REGISTER
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
24 # endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
25
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
26 /* In HPUX 10 the strcat function references memory past the last byte of
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
27 the string! This will core dump if the memory following the last byte is
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
28 not mapped.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
29
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 428
diff changeset
30 Here is a correct version from, glibc 1.09.
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
31 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
32
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
33 char *strcat (char *dest, const char *src);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
34
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
35 /* Append SRC on the end of DEST. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
36 char *
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
37 strcat (char *dest, const char *src)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
38 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
39 REGISTER char *s1 = dest;
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 428
diff changeset
40 REGISTER const char *s2 = src;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
41 char c;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
42
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
43 /* Find the end of the string. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
44 do
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
45 c = *s1++;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
46 while (c != '\0');
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
47
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
48 /* Make S1 point before the next character, so we can increment
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
49 it while memory is read (wins on pipelined cpus). */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
50 s1 -= 2;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
51
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
52 do
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
53 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
54 c = *s2++;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
55 *++s1 = c;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
56 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
57 while (c != '\0');
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
58
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
59 return dest;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
60 }