mirror of git://sourceware.org/git/glibc.git
59 lines
1.5 KiB
C
59 lines
1.5 KiB
C
/* Copyright (C) 1991, 1997, 2003, 2004 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
#include <string.h>
|
|
#include <memcopy.h>
|
|
|
|
|
|
/* Append SRC on the end of DEST. */
|
|
char *
|
|
__strcat_chk (dest, src, destlen)
|
|
char *dest;
|
|
const char *src;
|
|
size_t destlen;
|
|
{
|
|
char *s1 = dest;
|
|
const char *s2 = src;
|
|
reg_char c;
|
|
|
|
/* Find the end of the string. */
|
|
do
|
|
{
|
|
if (__builtin_expect (destlen-- == 0, 0))
|
|
__chk_fail ();
|
|
c = *s1++;
|
|
}
|
|
while (c != '\0');
|
|
|
|
/* Make S1 point before the next character, so we can increment
|
|
it while memory is read (wins on pipelined cpus). */
|
|
++destlen;
|
|
s1 -= 2;
|
|
|
|
do
|
|
{
|
|
if (__builtin_expect (destlen-- == 0, 0))
|
|
__chk_fail ();
|
|
c = *s2++;
|
|
*++s1 = c;
|
|
}
|
|
while (c != '\0');
|
|
|
|
return dest;
|
|
}
|