glibc/string/strcpy.c

44 lines
1.1 KiB
C

/* Copyright (C) 1991-2014 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, see
<http://www.gnu.org/licenses/>. */
#include <stddef.h>
#include <string.h>
#include <memcopy.h>
#undef strcpy
/* Copy SRC to DEST. */
char *
strcpy (dest, src)
char *dest;
const char *src;
{
char c;
char *s = (char *) src;
const ptrdiff_t off = dest - s - 1;
do
{
c = *s++;
s[off] = c;
}
while (c != '\0');
return dest;
}
libc_hidden_builtin_def (strcpy)