|
Packit |
6c4009 |
/* Copyright (C) 1991-2018 Free Software Foundation, Inc.
|
|
Packit |
6c4009 |
This file is part of the GNU C Library.
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
The GNU C Library is free software; you can redistribute it and/or
|
|
Packit |
6c4009 |
modify it under the terms of the GNU Lesser General Public
|
|
Packit |
6c4009 |
License as published by the Free Software Foundation; either
|
|
Packit |
6c4009 |
version 2.1 of the License, or (at your option) any later version.
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
The GNU C Library is distributed in the hope that it will be useful,
|
|
Packit |
6c4009 |
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
Packit |
6c4009 |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Packit |
6c4009 |
Lesser General Public License for more details.
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
You should have received a copy of the GNU Lesser General Public
|
|
Packit |
6c4009 |
License along with the GNU C Library; if not, see
|
|
Packit |
6c4009 |
<http://www.gnu.org/licenses/>. */
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
#include <string.h>
|
|
Packit |
6c4009 |
#include <memcopy.h>
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
/* Append SRC on the end of DEST. */
|
|
Packit |
6c4009 |
char *
|
|
Packit |
6c4009 |
__strcat_chk (char *dest, const char *src, size_t destlen)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
char *s1 = dest;
|
|
Packit |
6c4009 |
const char *s2 = src;
|
|
Packit |
6c4009 |
char c;
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
/* Find the end of the string. */
|
|
Packit |
6c4009 |
do
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
if (__glibc_unlikely (destlen-- == 0))
|
|
Packit |
6c4009 |
__chk_fail ();
|
|
Packit |
6c4009 |
c = *s1++;
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
while (c != '\0');
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
/* Make S1 point before the next character, so we can increment
|
|
Packit |
6c4009 |
it while memory is read (wins on pipelined cpus). */
|
|
Packit |
6c4009 |
++destlen;
|
|
Packit |
6c4009 |
s1 -= 2;
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
do
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
if (__glibc_unlikely (destlen-- == 0))
|
|
Packit |
6c4009 |
__chk_fail ();
|
|
Packit |
6c4009 |
c = *s2++;
|
|
Packit |
6c4009 |
*++s1 = c;
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
while (c != '\0');
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
return dest;
|
|
Packit |
6c4009 |
}
|