Mercurial > hg > xemacs-beta
annotate src/strcpy.c @ 611:38db05db9cb5
[xemacs-hg @ 2001-06-08 12:21:09 by ben]
------ gc-in-window-procedure fixes ------
alloc.c: Create "post-gc actions", to avoid those dreaded "GC during window
procedure" problems.
event-msw.c: Abort, clean and simple, when GC in window procedure. We want
to flush these puppies out.
glyphs-msw.c: Use a post-gc action when destroying subwindows.
lisp.h: Declare register_post_gc_action().
scrollbar-msw.c: Use a post-gc action when unshowing scrollbar windows, if in gc.
redisplay.c: Add comment about the utter evilness of what's going down here.
------ cygwin setitimer fixes ------
Makefile.in.in: Compile profile.c only when HAVE_SETITIMER.
nt.c: Style fixes.
nt.c: Move setitimer() emulation to win32.c, because Cygwin needs it too.
profile.c: Make sure we don't compile if no setitimer(). Use qxe_setitimer()
instead of just plain setitimer().
signal.c: Define qxe_setitimer() as an encapsulation around setitimer() --
call setitimer() directly unless Cygwin or MS Win, in which case
we use our simulated version in win32.c.
systime.h: Prototype mswindows_setitimer() and qxe_setitimer(). Long
comment about "qxe" and the policy regarding encapsulation.
win32.c: Move setitimer() emulation here, so Cygwin can use it.
Rename a couple of functions and variables to be longer and more
descriptive. In setitimer_helper_proc(), send the signal
using either mswindows_raise() or (on Cygwin) kill(). If for
some reason we are still getting lockups, we'll change the kill()
to directly invoke the signal handlers.
------ windows shell fixes ------
callproc.c, ntproc.c: Comments about how these two files must die.
callproc.c: On MS Windows, init shell-file-name from SHELL, then COMSPEC,
not just COMSPEC. (more correct and closer to FSF.) Don't
force a value for SHELL into the environment. (Comments added
to explain why not.)
nt.c: Don't shove a fabricated SHELL into the environment. See above.
------ misc fixes ------
glyphs-shared.c: Style correction.
xemacs-faq.texi: Merge in the rest of Hrvoje's Windows FAQ. Redo section 7
to update current reality and add condensed versions of
new changes for 21.1 and 21.4. (Not quite done for 21.4.)
Lots more Windows updates.
process.el: Need to quote a null
argument, too. From Dan Holmsand.
startup.el:
startup.el: Call MS Windows init function.
win32-native.el: Correct comments at top. Correctly handle passing arguments
to Cygwin programs and to bash. Fix quoting of zero-length
arguments (from Dan Holmsand). Set shell-command-switch based
on shell-file-name, which in turn comes from env var SHELL.
| author | ben |
|---|---|
| date | Fri, 08 Jun 2001 12:21:27 +0000 |
| parents | abe6d1db359e |
| children |
| rev | line source |
|---|---|
| 428 | 1 /* This file is part of XEmacs. |
| 2 | |
| 3 XEmacs is free software; you can redistribute it and/or modify it | |
| 4 under the terms of the GNU General Public License as published by the | |
| 5 Free Software Foundation; either version 2, or (at your option) any | |
| 6 later version. | |
| 7 | |
| 8 XEmacs is distributed in the hope that it will be useful, but WITHOUT | |
| 9 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 10 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 11 for more details. | |
| 12 | |
| 13 You should have received a copy of the GNU General Public License | |
| 14 along with XEmacs; see the file COPYING. If not, write to | |
| 15 the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
| 16 Boston, MA 02111-1307, USA. */ | |
| 17 | |
| 18 /* Synched up with: Not in FSF. */ | |
| 19 | |
| 20 /* In SunOS 4.1.1 the strcpy function references memory past the last byte of | |
| 21 the string! This will core dump if the memory following the last byte is | |
| 22 not mapped. | |
| 23 | |
| 24 Here are correct versions by hbs@lucid.com. | |
| 25 */ | |
| 26 | |
| 27 # include <config.h> | |
| 28 # ifndef REGISTER /* Strictly enforced in 20.3 */ | |
| 29 # define REGISTER | |
| 30 # endif | |
| 31 | |
| 32 #define ALIGNED(x) (!(((unsigned long) (x)) & (sizeof (unsigned long) - 1))) | |
| 33 | |
| 34 #define MAGIC 0x7efefeff | |
| 35 #define HIGH_BIT_P(c) ((c) & hi_bit) | |
| 36 #define HAS_ZERO(c) (((((c) + magic) ^ (c)) & not_magic) != not_magic) | |
| 37 | |
| 38 char * | |
| 39 strcpy (char *to, const char *from) | |
| 40 { | |
| 41 char *return_value = to; | |
| 42 if (to == from) | |
| 43 return to; | |
| 44 else if (ALIGNED (to) && ALIGNED (from)) | |
| 45 { | |
| 46 unsigned long *to1 = (unsigned long *) to; | |
| 47 const unsigned long *from1 = (const unsigned long *) from; | |
| 48 unsigned long c; | |
| 49 unsigned long magic = MAGIC; | |
| 50 unsigned long not_magic = ~magic; | |
| 51 /* unsigned long hi_bit = 0x80000000; */ | |
| 52 | |
| 53 while ((c = *from1) != 0) | |
| 54 { | |
| 55 if (HAS_ZERO(c)) | |
| 56 { | |
| 57 to = (char *) to1; | |
| 442 | 58 from = (const char *) from1; |
| 428 | 59 goto slow_loop; |
| 60 } | |
| 61 else | |
| 62 { | |
| 63 *to1 = c; | |
| 64 to1++; | |
| 65 from1++; | |
| 66 } | |
| 67 } | |
| 68 | |
| 69 to = (char *) to1; | |
| 70 *to = (char) 0; | |
| 71 return return_value; | |
| 72 } | |
| 73 else | |
| 74 { | |
| 75 char c; | |
| 76 | |
| 77 slow_loop: | |
| 78 | |
| 79 while ((c = *from) != 0) | |
| 80 { | |
| 81 *to = c; | |
| 82 to++; | |
| 83 from++; | |
| 84 } | |
| 85 *to = (char) 0; | |
| 86 } | |
| 87 return return_value; | |
| 88 } |